recent advances in paper-based sensors

Copyright Clearance Center request page. doi: 10.1016/j.snb.2017.09.206, Zhou, Q., Zeng, W., Chen, W. G., Xu, L. N., Kumar, R., and Umar, A. doi: 10.1016/j.cclet.2019.05.006, Zhou, Q., Chen, W. G., Xu, L. N., Kumar, R., Gui, Y. G., Zhao, Z. Y., et al. Adsorptive removal and photocatalytic degradation of organic pollutants using metal oxides and their composites: a comprehensive review. Paper has been increasingly used in recent years as a substrate in the structure of sensors to determine diverse biological and pharmaceutical molecules and ions. 2013:127345. doi: 10.1155/2013/127345, Cheng, L., Ma, S. Y., Wang, T. T., and Luo, J. doi: 10.1016/j.snb.2017.12.050, Zhou, Q., Xu, L. N., Umar, A., Chen, W. G., and Kumar, R. (2018c). Mater. Metal oxide composite can not only achieve functional dispersion, but also form heterojunctions to promote the movement of charge carriers. Editors select a small number of articles recently published in the journal that they believe will be particularly Paper-based biosensors for clinical and biomedical applications: Emerging engineering concepts and challenges Kuldeep Mahato, Buddhadev Purohit, Ashutosh Kumar and Pranjal Chandra7. Depending on the main goal to be achieved in paper-based sensors, the fabrication methods and the analysis techniques can be tuned to fulfill the needs of the end-user. If you wish to place a tax exempt order please contact us. (2017). Compd. Find support for a specific problem in the support section of our website. Chem. *Correspondence: Qu Zhou, zhouqu@swu.edu.cn, View all Front. Although paper-based sensors are very promising, they still suffer from certain limitations such as accuracy and sensitivity. Sci. If you want to reproduce the whole article Secondly, most of the SnO2 sensors currently used work at high temperature, which limits their wide application in detecting VOCs at room temperature. Role of oxygen vacancies in nanostructured metal-oxide gas sensors: a review. 11, 3155131561. (2016). 254, 178181. (2017). ICREA Research Professor and leader of the ICN2 Nanobioelectronics and Biosensors Group, Arben Merkoi obtained his PhD at the University of Tirana (Albania) in ion selective electrodes. doi: 10.1016/j.snb.2019.04.061, Li, Y. X., Guo, Z., Su, Y., Jin, X. B Chem. 51, 69416944. Cookie Settings, Terms and Conditions paper; sensor; device; microfluidics; lab-on-a-chip; diagnostics; analytical, Help us to further improve by taking part in this short 5 minute survey, Using the Image Analysis Method for Describing Soil Detachment by a Single Water Drop Impact, CANoE: A Context-Aware Notification Model to Support the Care of Older Adults in a Nursing Home. J. Hydrogen Energ. 231, 57. A micelle fusion-aggregation assembly approach to mesoporous carbon materials with rich active sites for ultra-sensitive ammonia. Appl. 749, 355362. B Chem. Sensor. Highly sensitive acetone sensors based on flame-spray-made La2O3-doped SnO2 nanoparticulate thick films. 3-D structures, such as microspheres, microflowers, and mesoporous structures, are assembled by diverse lower dimension fundamental blocks. Ceram. B Chem. Build. The Feature Paper can be either an original research article, a substantial novel research study that often involves Due to the influence of external environment and other factors, the stability of the sensor can not be guaranteed. 6:540. doi: 10.3389/fchem.2018.00540, Lu, Z. R., Zhou, Q., Xu, L. N., Gui, Y. G., Zhao, Z. Y., Tang, C., et al. Sensor. 138, 1258612595. Semiconductor metal oxides as chemoresistive sensors for detecting volatile organic compounds. Finally, this paper summarizes the sensing performances of these SnO2 nanomaterial sensors in VOCs detection, and the future development prospect and challenges is proposed. (2019). He has got several national and international grants related to nanomaterials application in biosensors and his group is collaborating with several worldwide leading labs in the field of nanobiosensors. 45, 1543515444. La2O3-doped SnO2 nanoparticle thick films has an amazing response value of 3,626 400 ppm at 350C, which is suitable for the detection of high concentration acetone (Tammanoon et al., 2018). This is due to the charge transfer between Ag and SnO2, which increases the absorption band on the composite by 20 nm, thus improving the gas sensitivity (Liu et al., 2019). We use cookies on our website to ensure you get the best experience. Shaddock peels as bio-templates synthesis of Cd-doped SnO2 nanofibers: a high performance formaldehyde sensing material. Prof. Merkoi is the co-founder of two spin-off companies: GraphenicaLab, devoted to graphene patterning, and PaperDrop, to clinical diagnostics. (2019a). Nanopaper-based sensorsTina Naghdi, Hossein Yousefi, Amir Reza Sharifi and Hamed Golmohammadi10. Flexible cellulose-based devices for monitoring physical parametersDieric dos Santos de Abreu, Mathias Strauss and Murilo Santhiago12. Different nanostructures and morphologies cause various effects on the properties of materials. This is an open access article distributed under the. Toluene, a colorless volatile liquid, is one of the most widely used aromatic hydrocarbons and is considered as a biomarker of cancer. J. Agr. 298:126870. doi: 10.1016/j.snb.2019.126870, Zhu, K., Ma, S., Tie, Y., Zhang, Q., Wang, W., Pei, S., et al. J. By continuing you agree to the use of cookies. Sensor. Recent advances of SnO2-based sensors for detecting fault characteristic gases extracted from power transformer oil. Highly sensitive formaldehyde gas sensors based on Ag doped Zn2SnO4/SnO2 hollow nanospheres. Researchers, PhD students, professors working in either academy or industries, PrefaceArben Merkoi1. 271, 4453. In a recent research, a facile solvent EIOC has been demonstrated for the synthesis of novel hierarchical branched mesoporous TiO2-SnO2 semiconducting heterojunctions. 273, 418428. (2019). In comparison to the 3-D structure, freestanding 2-D structures such as SnO2 nanosheets (Figure 1E) can provide better optimization including the modulation of the materials activity, surface polarization, and rich oxygen vacancies (Zhu et al., 2015). The unique properties of paper which allow passive liquid transport and compatibility with chemicals/biochemicals are the main advantages of using paper as a sensing platform. Due to the toxicity of formaldehyde, OSHA has established the Threshold Limit Value (TLV) as a concentration of 0.75 ppm for 8 h. The SnO/SnO2 nano-flowers prepared by hydrothermal method have a minimum detection concentration of 8.15 for formaldehyde, an optimal response temperature of 120C, and a response value of 80.9 at 50 ppm. Reprinted with permission from Li et al. Ion doping can reduce the size of nanomaterials and make the surface of the material rougher, thereby increasing the specific surface area. You are accessing a machine-readable page. The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. Sensor. B Chem. Appl. Simple telemedicine for developing regions: camera phones and paper-based microfluidic devices for real-time, off-site diagnosis. Papers are submitted upon individual invitation or recommendation by the scientific editors and undergo peer review (2018). Copyright 2020 Li, Zhou, Peng and Liao. doi: 10.1016/j.jallcom.2017.01.348, Yu, H., Yang, T., Wang, Z., Li, Z., Xiao, B., Zhao, Q., et al. When SnO2 material surface comes into contact with a reducing gas, the reducing gas will react with oxygen anions to produce carbon dioxide and water, and the resulting electrons will return to the conduction band of the semiconductor. 2012; 12(9):11505-11526. (2017). * However, it is anticipated that in the future, with advances in fabrication and analytical techniques, that there will be more new and innovative developments in paper-based sensors. It is a highly sensitive formaldehyde detection material (Zhu et al., 2019). (2015). (2017). Actuat. Facile synthesis of mesoporous WO3@graphene aerogel nanocomposites for low-temperature acetone sensing. (E) SnO2 nanosheets. Sensor. (2018). B Chem. Mater. Sensor. Alloy. Chin. Sign in to view your account details and order history. B Chem. Pt nanoparticles decorated SnO2 nanoneedles for effificient CO gas sensing applications. provided correct acknowledgement is given. Sci. A low temperature formaldehyde gas sensor based on hierarchical SnO/SnO2 nano-flowers assembled from ultrathin nanosheets: Synthesis, sensing performance and mechanism. 259, 604615. 294, 106115. Microwave-assisted and gram-scale synthesis of ultrathin SnO2 nanosheets with enhanced lithium storage properties. Materials. 792, 938944. 42, 1511915141. Finally, we hope our work will be helpful for the further exploration of metal oxide nanomaterials in the detection of VOCs. Corresponding authors, a 124, 3643. Owing to the rational combination of a hierarchical mesoporous structure, a high crystallinity, and well-defined n-n heterojunctions, the SHMT-based gas sensor shows an excellent sensing performance with a fast response and recovery dynamics, ultralow limit of detection and a superior selectivity (Zhao et al., 2019a). The bimetal PdAu modified SnO2 nanosheet showed excellent selectivity and responsiveness to low concentrations of acetone, which is due to the chemical sensitization of Au, electronic sensitization of Pd and synergism of PdAu bimetal nanosheet (Li G. et al., 2019). Non-enzymatic lab-on-paper devices for biosensing applicationsAna Carolina Marques, Toms Pinheiro, Gabriela V. Martins, Ana Rita Cardoso, Rodrigo Martins, Maria Goreti Sales and Elvira Fortunato8. doi: 10.1016/j.snb.2016.10.024, Shahabuddin, M., Umar, A., Tomar, M., and Gupta, V. (2017). This mini-review summaries the gas-sensing performances of SnO2 based sensor, which were influenced by the microstructure, doping, oxide composite and noble metal modification, toward toluene (C6H5CH3), formaldehyde (HCHO), and acetone (C3H6O). Sensor. (2012). Mater. Hierarchical WO3-NiO microflower for high sensitivity detection of SF6 decomposition byproduct H2S. Paper is also an ideal substrate to be used, considering that it is flexible, lightweight, mechanicallyresistant, a good medium for immobilization and trapping, and that it can be easily chemically and physically modified for customized applications, it can adsorb and transport liquid via capillary forces, can close the electrical circuit between electrodes when wet, it can be produced in diverse geometrical dimensions and porosities. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). Sensor. If you are the author of this article, you do not need to request permission to reproduce figures 165:106382. doi: 10.1016/j.buildenv.2019.106382, Sui, L. L., Zhang, X. F., Cheng, X. L., Wang, P., Xu, Y. M., Gao, S., et al. doi: 10.1021/jf034410t, Wang, D., Zhang, M., Chen, Z., Li, H., Chen, A., Wang, X., et al. Determination of formaldehyde in Brazilian alcohol fuels by flow-injection solid phase spectrophotometry. Int. Environ. (2019). doi: 10.1166/sam.2017.3111, Zhang, R., Ma, S. Y., Zhang, Q. X., Zhu, K. M., Tie, Y., Pei, S. T., et al. Recently, PESs have gained extensive attention because of their advantages of advanced sensitivity and selectivity during detection provided by electrochemistry, compared with microfluidic paper-based analytical devices (PADs) that still lack these advantages. Self-assembled biomolecular 1D nanostructures for aqueous sodium-ion battery. Feature Integrated paper-based sensing devices for diagnostic applicationsAnna Brunauer, H. Ceren Ates, Can Dincer and Susanna M. Frh, There are currently no reviews for "Paper Based Sensors", Copyright 2022 Elsevier, except certain content provided by third parties, Cookies are used by this site. Custom designed metal anchored SnO2 sensor for H2 detection. 66, 112255. Sensor. Bulk doping influence on the response of conductometric SnO2 gas sensors: understanding through cathodoluminescence study. (2015). 272:102009. doi: 10.1016/j.cis.2019.102009, Hermawan, A., Asakura, Y., Inada, M., and Yin, S. (2019). Understanding wax printing: a simple micropatterning process for paper-based microfluidics. More importantly, both methods are offline and cannot detect the content and change of VOCs in real-time. doi: 10.1016/j.snb.2016.12.117, Li, G., Cheng, Z., Xiang, Q., Yan, L., Wang, X., and Xu, J. All articles published by MDPI are made immediately available worldwide under an open access license. This work has been supported in part by the National Natural Science Foundation of China (No. Sensor. It has become a research hotspot to optimize the existing gas sensing materials by chemical modification and develop new gas sensing materials such as composite and hybrid semiconductor materials and polymer gas sensing materials. For example, organic waste gases such as formaldehyde and polycyclic aromatic hydrocarbons have strong carcinogenicity, when the human body is in this environment for a long time, the possibility of carcinogenesis will greatly increase. Open - Buy once, receive and download all available eBook formats, including PDF, EPUB, and Mobi (for Kindle). Chem. Mater. It is an ideal material for formaldehyde detection (Li N. et al., 2019). B Chem. These sensors could better meet the current objectives of a viable low-cost and portable device in addition to offering high sensitivity and selectivity, and multiple analyte discrimination. articles published under an open access Creative Common CC BY license, any part of the article may be reused without Metal oxide composites in conductometric gas sensors: achievements and challenges. Adv. (2015). The doping of Ce ions into the SnO2 lattice results in the smaller size of nanoparticles and the formation of a porous structure. A summary and future outlooks for PESs are also discussed. (2019). In addition, the Ag-doped Zn2SnO4/SnO2 hollow nanospheres responded to 50 ppm of formaldehyde with a value of 62.2 and a lower detection temperature of 140C (Zhang et al., 2019). The editor and reviewer's affiliations are the latest provided on their Loop research profiles and may not reflect their situation at the time of review. We cannot process tax exempt orders online. This paper is a review of recent advances in paper-based sensors and covers the following topics: existing fabrication techniques, analytical methods and application areas. J. Comput. Mater. progress in the field that systematically reviews the most exciting advances in scientific literature. Ag modified SnO2 nanoparticles prepared by hydrothermal in situ reduction improved the sensor's ability to detect formaldehyde. 813:152170. doi: 10.1016/j.jallcom.2019.152170, Zhao, T., Qiu, P. P., Fan, Y. C., Yang, J. P., Jiang, W., Wang, L. J., et al. madhu.thomas@aastu.edu.et, b Acetone is a colorless and irritant liquid. Today. Potentiometric sensors built with paper offer certain improvements since they are costeffective, portable, biodegradable, ecofriendly, disposable and easy to manufacture. B Chem. Table 1. This mini-review focuses on significant improvement of SnO2 based sensors in VOCs detection in recent years. GC determination of a single sample requires reference to known standards, and GC-ms requires a high time cost and complicated process. doi: 10.1016/j.jallcom.2017.07.017, Zhang, K., Yang, X., Wang, Y., Bing, Y., Qiao, L., Liang, Z., et al. Sci. Recent developments in paper-based microfluidic devices. (2020). Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. https://doi.org/10.1016/j.sintl.2022.100189. (2018). SnO2: a comprehensive review on structures and gas sensors. High dispersivity, ultra-small diameter 0-D SnO2 nanoparticles (Figure 1C) have highly effective surface areas and sufficient oxygen vacancies, which can improve the performance of nanoparticle based sensors (Matussin et al., 2020). J. Actuat. 1-D SnO2 structure, such as nanofibers (Figure 1D), has excellent sensitivity and stability due to its large specific surface area, high porosity and good permeability (Li H. et al., 2019). (2017). E-mail: (2017). The combination of two metal oxides can improve the gas sensitivity of semiconductor materials. B. The Y-doped SnO2 three-dimensional flower-like nanostructure prepared by one-step hydrothermal method has a large number of rough nanoflakes, which increases the specific surface area and is more conducive to the adsorption and desorption of oxygen and formaldehyde gas. In addition, VOCs exhaust gas may also cause environmental problems such as acid rain, ozone layer damage, and atmospheric warming (Meng et al., 2018). Moreover, the heterostructure formed by SnO2 and another metal oxide can promote the transfer of carriers between materials and change the conductivity and energy band structure of composite materials (Gusain et al., 2019; Wei et al., 2019). This may take some time to load. (2018a). Eng. Nanomaterials have many natural advantages such as large specific surface area, small size, and lightweight (Lu et al., 2018a; Zhou et al., 2018a). Facile synthesis cedar-like SnO2 hierarchical micro-nanostructures with improved formaldehyde gas sensing characteristics. Received: 29 January 2020; Accepted: 30 March 2020; Published: 05 May 2020. B Chem. Adv. Ag decorated SnO2 nanoparticles to enhance formaldehyde sensing properties. Detection of hazardous volatile organic compounds (VOCs) by metal oxide nanostructures-based gas sensors: a review. Actuat. doi: 10.1021/am507826d, Keywords: SnO2 based sensor, gas detection, VOCs, nanomaterials, improvement strategies, Citation: Li B, Zhou Q, Peng S and Liao Y (2020) Recent Advances of SnO2-Based Sensors for Detecting Volatile Organic Compounds. We would like to ask you for a moment of your time to fill in a short questionnaire, at the end of your visit. (B) A schematic of hydrothermal method. (2019). B Chem. The uniform distribution of SnO2 NCs in the pore walls of TiO2 forms numerous n-n heterojunctions which are extremely useful for surface catalytic reaction. doi: 10.1002/jcc.21959, PubMed Abstract | CrossRef Full Text | Google Scholar, Gusain, R., Gupta, K., Joshi, P., and Khatri, O. P. (2019). Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Vienna, Austria. Front. Au-loaded hierarchical MoO3 hollow spheres with enhanced gas-sensing performance for the detection of BTX (benzene, toluene, and xylene) and the sensing mechanism. https://doi.org/10.3390/s120911505, Subscribe to receive issue release notifications and newsletters from MDPI journals, You can make submissions to other journals. At present, there are many kinds of structures such as nanowires, nanofilaments, nanowires hollow spheres, nanofilaments flowers, and nanotubes (Mirzaei et al., 2016; Zhang Q. Y. et al., 2017). 6:1902008. doi: 10.1002/advs.201902008, Zhao, T., Ren, Y., Jia, G. Y., Zhao, Y. Y., Fan, Y. C., Yang, J. P., et al. Appl. J. Alloy. (2018). The most common preparation methods of SnO2 sensing materials include electrostatic spinning and hydrothermal methods, as shown in Figures 1A,B. doi: 10.1016/j.ceramint.2019.05.043, Hu, J., Wang, T., Wang, Y., Huang, D., He, G., Han, Y., et al. (2018). T. Gebretsadik, T. Belayneh, S. Gebremichael, W. Linert, M. Thomas and T. Berhanu, 9:1015. doi: 10.3390/nano9071015, Wei, Z. J., Zhou, Q., and Zeng, W. (2020). Fetching data from CrossRef. (2004). B Chem. For VOCs, this review mainly introduces toluene, formaldehyde and acetone. Flexible - Read on multiple operating systems and devices. 263, 120128. Plant-extract-mediated SnO2 nanoparticles: synthesis and applications. Sci. Therefore, Ce ions can provide more active sites for the adsorption and reaction of acetone (Lian et al., 2017). Enhanced toluene sensing performances of Pd- loaded SnO2 cubic nanocages with porous nanoparticle-assembled shells. The aim is to provide a snapshot of some of the most exciting work Lett. The Pd-loaded SnO2 cubic nanocages are also an ideal choice for toluene detection, with a minimum detection concentration of 100 ppb, a response to 20 ppm of toluene of 41.4, and an optimal reaction temperature of 250C (Qiao et al., 2017). https://doi.org/10.3390/s120911505, Liana, Devi D., Burkhard Raguse, J. Justin Gooding, and Edith Chow. Read more about how to correctly acknowledge RSC content. 301:126845. doi: 10.1016/j.snb.2019.126845, Chen, W. G., Zhou, Q., Gao, T. Y., Su, X. P., and Wan, F. (2013). These optimization methods make SnO2-based gas sensors operate at lower temperatures, higher sensitivity, and better stability. Facile synthesis of Ca2+/Au co-doped SnO2 nanofibers and their application in acetone sensor. Mater. doi: 10.1016/j.talanta.2004.03.047, Vesely, P., Lusk, L., Basarova, G., Seabrooks, J., and Ryder, D. (2003). Appl. Reprinted with permission from Zhu et al. Also, it can be expected that PESs can better meet current user demands, making them a stand-out analytical tool because of their capability for multiple analyte detection and their compatibility in a variety of application areas, like clinical diagnosis, environmental monitoring and food quality control. (A) A schematic of electrospinning method. In this respect, various morphologies from 0-D to 3-D with unique physical and chemical properties have been successfully synthesized. PdAu decorated SnO2 nanosheets sensor was able to detect acetone at 45 ppb and to respond to acetone at 50 ppm to 109 (Li G. et al., 2019). In recent years, gas sensors has been widely noticed because of its fast detection speed, small volume, simple measurement and on-line monitoring. No special Hierarchical morphology-dependent gas-sensing performances of three-dimensional SnO2 nanostructures. Actuat. ICREA Research Professor and leader of the ICN2 Nanobioelectronics and Biosensors Group, Sales tax will be calculated at check-out, Provides updates on the latest design in paper-based sensors using various nano and micromaterials, Includes optical/electrical-based detection modes integrated within paper-based platforms, Covers applications of paper-based platforms in diagnostics and other industries. Synthesis and characterization of highly sensitive hydrogen (H2) sensing device based on Ag doped SnO2 nanospheres. 244, 182210. Food Chem. Formaldehyde is a colorless and pungent gas. Adv. This review discusses the performance improvements of SnO2-based nanomaterials and the comparison of gas sensitivity in VOCs in recent years. In the detection of common VOCs, the lower detection limit, response value and detection temperature of SnO2 based nanomaterials are different. doi: 10.1016/j.snb.2014.01.108, Korotcenkov, G., and Cho, B. K. (2017). Only visits after 24 November 2015 are recorded. You seem to have javascript disabled. The cactus-like WO3-SnO2 nanocomposite was prepared by one-step hydrothermal method by attaching many tiny SnO2 nanospheres to large WO3 nanospheres, which provided many active sites for the acetone molecule and provided heterojunctions between WO3 and SnO2. He is also involved in teaching PhD courses in field of nanomaterial-based biosensors in several Spanish and international centres. Cookie Notice (C) SnO2 nanoparticles. doi: 10.1016/j.snb.2018.01.238, Teixeira, L. S., Leao, E. S., Dantas, A. F., Pinheiro, H. L., Costa, A. C., and de Andrade, J. Compd. doi: 10.1016/j.snb.2018.05.039, Xu, X., Chen, Y., Zhang, G., Ma, S., Lu, Y., Bian, H., et al. Thanks in advance for your time. 243, 465474. Acs. High yield manufacture of lateral flow test strips: From the lab to the marketMichael A. Mansfield9. The chemical adsorption process can be explained by the following reactions: When SnO2 sensor contacts with the measured gas, its resistance will change according to the oxidation or reduction characteristics of the gas. Highly sensitive formaldehyde gas sensors based on Y-doped SnO2 hierarchical flower-shaped nanostructures. Furthermore, the improvement strategies of the SnO2 sensor from the perspective of nanomaterials are presented. IAQ guidelines for selected volatile organic compounds (VOCs) in the UK. 407, 447455. Multilevel effective heterojunctions based on SnO2/ZnO 1D fibrous hierarchical structure with unique interface electronic effects. Therefore, the quantitative detection of acetone is of great significance (Cheng et al., 2015; Lian et al., 2017). Nanomaterials Basel. Soc. (2018b). Inter. Compd. Ion doping can change the cell parameters of the material, the number of suspensions on the surface of the material and the richness of defects, thereby enhance the gas sensitivity of the sensor (Korotcenkov and Cho, 2014). (2020). B Chem. Al-Hashem, M., Akbar, S., and Morris, P. (2019). permission provided that the original article is clearly cited. You do not have JavaScript enabled. Herein, in this mini review, we present an overview of recent developments in PESs over the last decade, focusing on existing fabrication techniques and application areas, specifically in relation to clinical diagnostics, food quality control and environmental monitoring, where simple and portable analytical devices are greatly needed. doi: 10.1016/j.matlet.2018.08.007, Zhu, Y. Q., Guo, H. Z., Zhai, H. Z., and Cao, C. B. Actuat. 724, 121129. Nanotechnology 31:215701. doi: 10.1088/1361-6528/ab73bd, Xie, N., Guo, L. L., Chen, F., Kou, X. Y., Wang, C., Ma, J., et al. Current paper-based sensors are focused on microfluidic delivery of solution to the detection site whereas more advanced designs involve complex 3-D geometries based on the same microfluidic principles. Theres no activation process to access eBooks; all eBooks are fully searchable, and enabled for copying, pasting, and printing. doi: 10.1016/j.ceramint.2016.06.145, Qiao, L., Bing, Y., Wang, Y., Yu, S., Liang, Z., and Zeng, Y. Department of Industrial Chemistry, Addis Ababa Science and Technology University, P. O. Box.16417, Addis Ababa, Ethiopia J. Sensor. In addition, long-term stability is also one of the research hotspots of SnO2 sensors in the future. (2018b). 256, 656664. J. Nanomater. Paper-based sensors for the application of biological compound detectionOrawon Chailpakul, Weena Siangproh, Sakda Jampasa, Sudkate Chaiyo, Prinjaporn Teengam, Abdulhadee Yakoh and Chanika Pinyorospathum3. ScienceDirect is a registered trademark of Elsevier B.V. ScienceDirect is a registered trademark of Elsevier B.V. The effect of PMMA pore-forming on hydrogen sensing properties of porous SnO2 thick film sensor. The Au@WO3-SnO2 corrugated nanofibers is an ideal low concentration acetone gas sensor with low detection limit and high response (Shao et al., 2019). Colloid. Sensor. First of all, cross sensitivity is a huge challenge for the preparation of high-performance sensors. This type of Different preparation methods will change the structure and morphology of SnO2 sensing materials and further enhance the gas sensitivity (Long et al., 2018; Zhang Y. J. et al., 2018; Zhou et al., 2018b). Actuat. doi: 10.1016/j.apsusc.2018.12.208, Shrubsole, C., Dimitroulopoulou, S., Foxall, K., Gadeberg, B., and Doutsi, A. A novel cactus-like WO3-SnO2 nanocomposite and its acetone gas sensing properties.

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