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Journal of Sol-Gel Science and Technology

, Volume 88, Issue 2, pp 322–333 | Cite as

Sol–gel spin coating assisted room temperature operated nanostructured ZnO ethanol sensor with behavior transformation

  • Ajay Beniwal
  • Praveen Kumar Sahu
  • Sunny Sharma
Original Paper: Devices based on sol-gel or hybrid materials
  • 117 Downloads

Abstract

In this paper, zinc oxide (ZnO) thin film sensor has been fabricated using different sol–gel spin coating route to detect very low concentration (2 ppm) of ethanol vapors at room temperature (RT). The sensor shows appreciable response ~60% for 100 ppm of ethanol (C2H5OH) vapors at RT under humidity level ~55% RH. Various sensing parameters viz. % response, selectivity, stability, response/recovery time, repeatability, and reproducibility have been studied successfully. Structural and morphological properties have been studied via X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). XRD reveals the wurtzite structure of polycrystalline ZnO thin film. AFM, SEM, and TEM results confirm the wavy structure of well-shaped and slackly distributed ZnO nanograins with average particle size in range ~15–25 nm. The analyte sensing properties at room temperature can be ascribed to higher specific surface area due to nanograins formation. The significant effect of operating temperature on sensor’s performance is also analysed in order to obtain the optimum temperature (Topt) of the sensor device. Response reaches to 321.7% for 100 ppm of ethanol vapors at Topt (175 °C). The transformation in the behavior of sensing layer is observed which is described on the basis of experimental studies.

Highlights

  • Growth of nanostructured ZnO thin film sensor for ethanol detection using facile sol-gel spin coating technique.

  • XRD, TEM, AFM and SEM are used for structural, topography and morphological properties analysis of the synthesized ZnO layer.

  • Good sensitivity, selectivity, reproducibility and high stability observed towards ethanol detection at room temperature. Sensitivity is found to be improved multifold at higher temperatures.

  • The transformation in the behavior of sensing layer is observed and explained on the basis of reducing and oxidizing byproducts formation upon ethanol exposure.

Keywords

Sol–gel Nanograins Ethanol Room temperature % Response Sensing behavior transformation 

Notes

Acknowledgements

The research work is sponsored by Indian Institute of Information Technology – Allahabad, under seed money research grant with file no. - GRN - IIIT-A/DR(F&A)/Seed Money/2017/Int.85. The authors’ are grateful to Central Instrument Facility Centre (CIFC) - IIT (BHU), Varanasi for the technical support of the structural characterization.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. 1.
    Zhang L, Huang J, Ma D et al. (2017) Preparation and gas sensing properties of ZnO hollow microspheres. J Sol-Gel Sci Technol 82:59–66CrossRefGoogle Scholar
  2. 2.
    Sadek AZ, Choopun S, Wlodarski W et al. (2007) Characterization of ZnO nanobelt-based gas sensor for H2, NO2 and hydrocarbon sensing. IEEE Sens J 7:919–924CrossRefGoogle Scholar
  3. 3.
    Buso D, Guglielmi M, Martucci A et al. (2006) Porous sol gel silica films doped with crystalline NiO nanoparticles for gas sensing applications. J Sol-Gel Sci Technol 40:299–308CrossRefGoogle Scholar
  4. 4.
    Li L, Lin H, Qu F (2013) Synthesis of mesoporous SnO2 nanomaterials with selective gas-sensing properties. J Sol-Gel Sci Technol 67:545–555CrossRefGoogle Scholar
  5. 5.
    Lou Z, Deng J, Wang L et al. (2013) A class of hierarchical nanostructures: ZnO surface-functionalized TiO2 with enhanced sensing properties. RSC Adv 3:3131CrossRefGoogle Scholar
  6. 6.
    Neri G, Bonavita A, Micali G et al. (2007) In2O3 and Pt-In2O3 nanopowders for low temperature oxygen sensors. Sens Actuators B Chem 127:455–462CrossRefGoogle Scholar
  7. 7.
    Bie LJ, Yan XN, Yin J et al. (2007) Nanopillar ZnO gas sensor for hydrogen and ethanol. Sens Actuators, B Chem 126:604–608CrossRefGoogle Scholar
  8. 8.
    Liu Z, Cai Q, Ma C et al. (2017) Photoelectrochemical properties and growth mechanism of varied ZnO nanostructures. New J Chem 41:7947–7952CrossRefGoogle Scholar
  9. 9.
    Liu Z, Lei E, Ya J, Xin Y (2009) Growth of ZnO nanorods by aqueous solution method with electrodeposited ZnO seed layers. Appl Surf Sci 255:6415–6420CrossRefGoogle Scholar
  10. 10.
    Liu Z, Li Y, Liu C et al. (2011) Performance of ZnO dye-sensitized solar cells with various nanostructures as anodes. Solid State Sci 13:1354–1359CrossRefGoogle Scholar
  11. 11.
    Marouf S, Beniaiche A, Guessas H, Azizi A (2017) Morphological, structural and optical properties of ZnO thin films deposited by dip coating method. Mater Res 20:88–95CrossRefGoogle Scholar
  12. 12.
    Liu Z, Jin Z, Qiu J et al. (2006) Preparation and characteristics of ordered porous ZnO films by a electrodeposition method using PS array templates. Semicond Sci Technol 21:60–66CrossRefGoogle Scholar
  13. 13.
    Chen ZCZ, Shum KSK, Salagaj T et al. (2010) ZnO thin films synthesized by chemical vapor deposition. Appl Technol Conf (LISAT), 2010 Long Isl Syst 4–9Google Scholar
  14. 14.
    Keskenler EF, Doğan S, Diyarbakır B et al. (2011) Structural and optical properties of ZnO thin films by the spin coating Sol-Gel method. J Sol-Gel Sci Technol 60:66–70CrossRefGoogle Scholar
  15. 15.
    Samanta P, Bagchi S, Mishra S (2015) Synthesis and sensing characterization of ZnO nanofibers prepared by electrospinning. Mater Today Proc 2:4499–4502CrossRefGoogle Scholar
  16. 16.
    Al-Hardan NH, Abdullah MJ, Aziz AA (2010) Sensing mechanism of hydrogen gas sensor based on RF-sputtered ZnO thin films. Int J Hydrog Energy 35:4428–4434CrossRefGoogle Scholar
  17. 17.
    Liu Z, Jin Z, Li W, Qiu J (2005) Preparation of ZnO porous thin films by sol-gel method using PEG template. Mater Lett 59:3620–3625CrossRefGoogle Scholar
  18. 18.
    Gong S, Liu J, Xia J et al. (2009) Gas sensing characteristics of SnO2 thin films and analyses of sensor response by the gas diffusion theory. Mater Sci Eng B Solid-State Mater Adv Technol 164:85–90CrossRefGoogle Scholar
  19. 19.
    Lukowiak A, Strek W (2009) Sensing abilities of materials prepared by sol-gel technology. J Sol-Gel Sci Technol 50:201–215CrossRefGoogle Scholar
  20. 20.
    Li F, Zhang H, Hu L et al. (2013) A novel ethanol gas sensor based on ZnO-microwire. J Mater Sci Mater Electron 24:4812–4816CrossRefGoogle Scholar
  21. 21.
    Kumar R, Al-Dossary O, Kumar G, Umar A (2014) Zinc oxide nanostructures for NO2 gas–sensor applications: A review. Nano-Micro Lett 7:1–24Google Scholar
  22. 22.
    Hjiri M, El Mir L, Leonardi S et al. (2013) CO and NO2 selective monitoring by ZnO-based sensors. Nanomaterials 3:357–369CrossRefGoogle Scholar
  23. 23.
    Wei S, Wang S, Zhang Y, Zhou M (2014) Different morphologies of ZnO and their ethanol sensing property. Sens Actuators B Chem 192:480–487CrossRefGoogle Scholar
  24. 24.
    Liu L, Li S, Zhuang J et al. (2011) Improved selective acetone sensing properties of Co-doped ZnO nanofibers by electrospinning. Sens Actuators B Chem 155:782–788CrossRefGoogle Scholar
  25. 25.
    Yadav AB, Jit S (2017) Particle size effects on the hydrogen sensing properties of Pd/ZnO Schottky contacts fabricated by sol–gel method. Int J Hydrog Energy 42:786–794CrossRefGoogle Scholar
  26. 26.
    Kumar M, Bhati VS, Ranwa S et al. (2017) Pd/ZnO nanorods based sensor for highly selective detection of extremely low concentration hydrogen. Sci Rep 7:1–9CrossRefGoogle Scholar
  27. 27.
    Zhang S-L, Lim J-O, Huh J-S, Lee W (2012) Selective growth of ZnO nanorods and its gas sensor application. IEEE Sens J 12:3143–3148CrossRefGoogle Scholar
  28. 28.
    Xiang D, Qu F, Chen X et al. (2014) Synthesis of porous ZnO nanospheres for gas sensor and photocatalysis. J Sol-Gel Sci Technol 69:370–377CrossRefGoogle Scholar
  29. 29.
    Cheng XL, Zhao H, Huo LH et al. (2004) ZnO nanoparticulate thin film: Preparation, characterization and gas-sensing property. Sens Actuators, B Chem 102:248–252CrossRefGoogle Scholar
  30. 30.
    Responders E, Last SEE (2016) Right to know, hazardous substrance fact sheet, New Jersey: NJ HealthGoogle Scholar
  31. 31.
    Wang Y, Liu L, Meng C et al. (2016) A novel ethanol gas sensor based on TiO2/Ag0.35V2O5 branched nanoheterostructures. Sci Rep 6:33092CrossRefGoogle Scholar
  32. 32.
    Pawar NK, Kajale DD, Patil GE et al. (2012) Nanostructured Fe2O3 thick film as an ethanol sensor. Int J Smart Sens Intell Syst 5:441–457Google Scholar
  33. 33.
    Bhatia S, Verma N, Bedi RK (2017) Ethanol gas sensor based upon ZnO nanoparticles prepared by different techniques. Results Phys 7:801–806CrossRefGoogle Scholar
  34. 34.
    Wang L, Kang Y, Liu X et al. (2012) ZnO nanorod gas sensor for ethanol detection. Sens Actuators, B Chem 162:237–243CrossRefGoogle Scholar
  35. 35.
    Ahmadi Daryakenari A, Ahmadi Daryakenari M, Bahari Y, Omivar H (2012) Preparation and ethanol sensing properties of ZnO nanoparticles via a novel sol-gel method. ISRN Nanotechnol 2012:1–6CrossRefGoogle Scholar
  36. 36.
    Wu WY, Ting JM, Huang PJ (2009) Electrospun ZnO nanowires as gas sensors for ethanol detection. Nanoscale Res Lett 4:513–517CrossRefGoogle Scholar
  37. 37.
    Rao BB (2000) Zinc oxide ceramic semi-conductor gas sensor for ethanol vapour. Mater Chem Phys 64:62–65CrossRefGoogle Scholar
  38. 38.
    Qi J, Zhang H, Lu S et al. (2015) High performance indium-doped ZnO gas sensor. J Nanomater 2015:1–6CrossRefGoogle Scholar
  39. 39.
    Yin Z, Wang X, Sun F et al. (2017) Aligned hierarchical Ag/ZnO nano-heterostructure arrays via electrohydrodynamic nanowire template for enhanced gas-sensing properties. Sci Rep 7:1–10CrossRefGoogle Scholar
  40. 40.
    Xing L, Hu Y, Wang P et al. (2014) Realizing room-temperature self-powered ethanol sensing of Au/ZnO nanowire arrays by coupling the piezotronics effect of ZnO and the catalysis of noble metal. Appl Phys Lett 104:1–5Google Scholar
  41. 41.
    Kondo T, Sato Y, Kinoshita M et al. (2017) Room temperature ethanol sensor based on ZnO prepared via laser ablation in water. Jpn J Appl Phys 56:080304CrossRefGoogle Scholar
  42. 42.
    Zheng ZQ, Yao JD, Wang B, Yang GW (2015) Light-controlling, flexible and transparent ethanol gas sensor based on ZnO nanoparticles for wearable devices. Sci Rep 5:1–8Google Scholar
  43. 43.
    Yadav A, Periasamy C, Bhaumik S, Jit S (2013) Hydrogen gas sensing properties of Pd/ZnO thin films grown on n -Si<100>substrates at room-temperature by thermal evaporation and sol-gel techniques: a comparative study. Indian J Pure Appl Phys 51:792–799Google Scholar
  44. 44.
    Ito T, Fujii Y, Yamanishi N et al. (2016) Electrodeposited ZnO thin film on twin sensor QCM for sensing of ethanol at room temperature. Procedia Eng 168:411–414CrossRefGoogle Scholar
  45. 45.
    Li Y, Gong J, He G, Deng Y (2012) Enhancement of photoresponse and UV-assisted gas sensing with Au decorated ZnO nanofibers. Mater Chem Phys 134:1172–1178CrossRefGoogle Scholar
  46. 46.
    Lu F, Cai W, Zhang Y (2008) ZnO hierarchical micro/nanoarchitectures: solvothermal synthesis and structurally enhanced photocatalytic performance. Adv Funct Mater 18:1047–1056CrossRefGoogle Scholar
  47. 47.
    Zhang QP, Xu XN, Liu YT et al. (2017) A feasible strategy to balance the crystallinity and specific surface area of metal oxide nanocrystals. Sci Rep 7:1–12CrossRefGoogle Scholar
  48. 48.
    Wang Z, Teramura K, Hosokawa S, Tanaka T (2015) Highly efficient photocatalytic conversion of CO2 into solid CO using H2O as a reductant over Ag-modified ZnGa2O4. J Mater Chem A 3:11313–11319CrossRefGoogle Scholar
  49. 49.
    Mohan AC, Renjanadevi B (2016) Effect of zinc oxide nanoparticles on mechanical properties of diglycidyl ether of bisphenol-A. J Mater Sci Eng 5:1–5Google Scholar
  50. 50.
    Khan MI, Bhatti KA, Qindeel R et al. (2016) Investigations of the structural, morphological and electrical properties of multilayer ZnO/TiO2 thin films, deposited by sol-gel technique. Results Phys 6:156–160CrossRefGoogle Scholar
  51. 51.
    Pan X, Zhao X, Chen J et al. (2015) A fast-response/recovery ZnO hierarchical nanostructure based gas sensor with ultra-high room-temperature output response. Sens Actuators, B Chem 206:764–771CrossRefGoogle Scholar
  52. 52.
    Gouma P (2010), Nanomaterials for chemical sensors and biotechnology, Singapore:Pan Stanford PublishingGoogle Scholar
  53. 53.
    Zhou X, Xue Q, Chen H, Liu C (2010) Currentvoltage characteristics and ethanol gas sensing properties of ZnO thin film/Si heterojunction at room temperature. Phys E Low-Dimens Syst Nanostruct 42:2021–2025CrossRefGoogle Scholar
  54. 54.
    Zhang L, Zhao J, Lu H et al. (2012) Facile synthesis and ultrahigh ethanol response of hierarchically porous ZnO nanosheets. Sens Actuators, B Chem 161:209–215CrossRefGoogle Scholar
  55. 55.
    Zhou X, Zhu Y, Luo W et al. (2016) Chelation-assisted soft-template synthesis of ordered mesoporous zinc oxides for low concentration gas sensing. J Mater Chem A 4:15064–15071CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Electronics & Communication EngineeringIndian Institute of Information TechnologyAllahabadIndia
  2. 2.Department of Electronics EngineeringIndian Institute of Technology (Banaras Hindu University)VaranasiIndia

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