Issue

Vol. 7 No. 2 (2015)

Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications: A Review

https://doi.org/10.1007/s40820-014-0023-3
Rajesh Kumar
PG Department of Chemistry, JCDAV College, Dasuya 144 205, Punjab, India
O. Al-Dossary
Department of Physics, King Saud University, Riyadh 11442, Kingdom of Saudi Arabia
Girish Kumar
PG Department of Chemistry, JCDAV College, Dasuya 144 205, Punjab, India
Ahmad Umar
Department of Chemistry, Faculty of Arts and Sciences, Najran University, P.O. Box 1988, Najran 11001, Kingdom of Saudi Arabia

Corresponding Author: Ahmad Umar

ahmadumar786@gmail.com

Nano-Micro Letters, Vol. 7 No. 2 (2015), Article Number: 97-120

Abstract

Because of the interesting and multifunctional properties, recently, ZnO nanostructures are considered as excellent material for fabrication of highly sensitive and selective gas sensors. Thus, ZnO nanomaterials are widely used to fabricate efficient gas sensors for the detection of various hazardous and toxic gases. The presented review article is focusing on the recent developments of NO2 gas sensors based on ZnO nanomaterials. The review presents the general introduction of some metal oxide nanomaterials for gas sensing application and finally focusing on the structure of ZnO and its gas sensing mechanisms. Basic gas sensing characteristics such as gas response, response time, recovery time, selectivity, detection limit, stability and recyclability, etc are also discussed in this article. Further, the utilization of various ZnO nanomaterials such as nanorods, nanowires, nano-micro flowers, quantum dots, thin films and nanosheets, etc for the fabrication of NO2 gas sensors are also presented. Moreover, various factors such as NO2 concentrations, annealing temperature, ZnO morphologies and particle sizes, relative humidity, operating temperatures which are affecting the NO2 gas sensing properties are discussed in this review. Finally, the review article is concluded and future directions are presented.

Keywords

ZnO nanostructure Gas sensors Sensor parameters Sensor mechanism
Kumar, Rajesh, O. Al-Dossary, Girish Kumar, and Ahmad Umar. 2014. “Zinc Oxide Nanostructures for NO2 Gas–Sensor Applications: A Review”. Nano-Micro Letters 7 (2):97-120. https://doi.org/10.1007/s40820-014-0023-3.
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References
  1. Q. Qi, T. Zhang, S. Wang, X. Zheng, Humidity sensing properties of KCl-doped ZnO nanofibers with super-rapid response and recovery. Sens. Actuators B: Chem. 137(2), 649–655 (2009). doi:10.1016/j.snb.2009.01.042
  2. P. Ivanov, E. Llobet, X. Vilanova, J. Brezmes, J. Hubalek, X. Correig, Development of high gas response ethanol gas sensors based on Pt-doped SnO2 surfaces. Sens. Actuators B: Chem. 99(2–3), 201–206 (2004). doi:10.1016/j.snb.2003.11.012
  3. R.L. Vander Wal, G.W. Hunter, J.C. Xu, M.J. Kulis, G.M. Berger, T.M. Ticich, Metal oxide nanostructure and gas-sensing performance. Sens. Actuators B: Chem. 138(1), 113–119 (2009). doi:10.1016/j.snb.2009.02.020
  4. F. Rock, N. Barsan, U. Weimar, Electronic nose: current status and future trends. Chem. Rev. 108(2), 705–725 (2008). doi:10.1021/cr068121q
  5. X. Zhou, J. Zhang, T. Jiang, X. Wang, Z. Zhu, Humidity detection by nanostructured ZnO: a wireless quartz crystal microbalance investigation. Sens. Actuators A: Physical 135(1), 209–214 (2007). doi:10.1016/j.sna.2006.07.001
  6. C. Wagner, K. Hauffe, The stationary state of catalysts in homogeneous reactions. Ztschr. Elektrochem. 33, 172 (1938)
  7. T. Seiyama, A. Kato, K. Fujiishi, M. Nagatani, A new detector for gaseous components using semiconductive thin film. Anal. Chem. 34(11), 1502–1503 (1962). doi:10.1021/ac60191a001
  8. L. Liao, H.B. Lu, J.C. Li, H. He, D.F. Wang, D.J. Fu, C. Liu, Size dependence of gas response of ZnO nanorods. J. Phys. Chem. 111(5), 1900–1903 (2007). doi:10.1021/jp065963k
  9. J.-T. Hsueh, C.-L. Hsu, S.-J. Chang, I.-C. Chen, Laterally grown ZnO nanowire ethanol gas sensors. Sens. Actuators B: Chem. 126(2), 473–477 (2007). doi:10.1016/j.snb.2007.03.034
  10. P.-S. Cho, K.-W. Kim, J.-H. Lee, NO2 sensing characteristics of ZnO nanorods prepared by hydrothermal method. J. Electroceram. 17(2–4), 975–978 (2006). doi:10.1007/s10832-006-8146-7
  11. P. Feng, Q. Wan, T.H. Wang, Contact-controlled sensing properties of flowerlike ZnO nanostructure. Appl. Phys. Lett. 87, 213111 (2005). doi:10.1063/1.2135391
  12. Y.-J. Choi, I.-S. Hwang, J.-G. Park, K.-J. Choi, J.-H. Park, J.-H. Lee, Novel fabrication of a SnO2 nanowire gas sensor with high gas response. Nanotechnology 19, 095508 (2008). doi:10.1088/0957-4484/19/9/095508
  13. S. Shi, Y. Liu, Y. Chen, J. Zhang, Y. Wang, T. Wang, Ultrahigh ethanol response of SnO2 nanorods at low working temperature arising from La2O3 loading. Sens. Actuators B: Chem. 140(2), 426–431 (2009). doi:10.1016/j.snb.2009.04.058
  14. J.-K. Choi, I.-S. Hwang, S.-J. Kim, J.-S. Park, S.-S. Park, U. Jeong, Y.C. Kang, J.-H. Lee, Design of selective gas sensors using electrospun Pd-doped SnO2 hollow nanofibers. Sens. Actuators B: Chem. 150(1), 191–199 (2010). doi:10.1016/j.snb.2010.07.013
  15. C.S. Rout, G.U. Kulkarni, C.N.R. Rao, Room temperature hydrogen and hydrocarbon sensors based on single nanowires of metal oxides. J. Phys. D-Appl. Phys. 40(9), 2777–2782 (2007). doi:10.1088/0022-3727/40/9/016
  16. H.G. Choi, Y.H. Jung, D.K. Kim, Solvothermal synthesis of tungsten oxide nanorod/nanowire/nanosheet. J. Am. Ceram. Soc. 88(6), 1684–1686 (2005). doi:10.1111/j.1551-2916.2005.00341.x
  17. N.V. Hieu, V.V. Quang, N.D. Ho, D. Kim, Preparing large-scale WO3 nanowire-like structure for high gas response NH3 gas sensor through a simple route. Curr. Appl. Phys. 11(3), 657–661 (2011). doi:10.1016/j.cap.2010.11.002
  18. X. Gou, G. Wang, J. Yang, J. Park, D. Wexler, Chemical synthesis, characterisation and gas sensing performance of copper oxide nanoribbons. J. Mater. Chem. 18, 965–969 (2008). doi:10.1039/b716745h
  19. H. Kim, C. Jin, S. Park, S. Kim, C. Lee, H2S gas sensing properties of bare and Pd-functionalized CuO nanorods. Sens. Actuators B: Chem. 161(1), 594–599 (2012). doi:10.1016/j.snb.2011.11.006
  20. F.-N. Meng, X.-P. Di, H.-W. Dong, Y. Zhang, C.-L. Zhu, C. Li, Y.-J. Chen, Ppb H2S gas sensing characteristics of Cu2O/CuO sub-microspheres at low-temperature. Sens. Actuators B: Chem. 182, 197–204 (2013). doi:10.1016/j.snb.2013.02.112
  21. Q. Hao, L. Li, X. Yin, S. Liu, Q. Li, T. Wang, Anomalous conductivity-type transition sensing behaviors of n-type porous α-Fe2O3 nanostructures toward H2S. Mater. Sci. Eng. B 176(7), 600–605 (2011). doi:10.1016/j.mseb.2011.02.002
  22. W. Zheng, X. Lu, W. Wang, Z. Li, H. Zhang, Y. Wang, Z. Wang, C. Wang, A highly sensitive and fast-responding sensor based on electrospun In2O3 nanofibers. Sens. Actuators B: Chem. 142(1), 61–65 (2009). doi:10.1016/j.snb.2009.07.031
  23. W. Zheng, X. Lu, W. Wang, Z. Li, H. Zhang, Z. Wang, X. Xu, S. Li, C. Wang, Assembly of Pt nanoparticles on electrospun In2O3 nanofibers for H2S detection. J. Colloid Interface Sci. 338(2), 366–370 (2009). doi:10.1016/j.jcis.2009.06.041
  24. N. Singh, R.K. Gupta, P.S. Lee, Gold-nanoparticle-functionalized In2O3 nanowires as CO gas sensors with a significant enhancement in response. Appl. Mater. Interfaces 3(7), 2246–2252 (2011). doi:10.1021/am101259t
  25. J. Xu, Y. Chen, J. Shen, Ethanol sensor based on hexagonal indium oxide nanorods prepared by solvothermal methods. Mater. Lett. 62(8–9), 1363–1365 (2008). doi:10.1016/j.matlet.2007.08.054
  26. Z. Guo, M. Li, J. Liu, Highly porous CdO nanowires: preparation based on hydroxy- and carbonate-containing cadmium compound precursor nanowires, gas sensing and optical properties. Nanotechnology 19, 245611 (2008). doi:10.1088/0957-4484/19/24/245611
  27. Z. Liu, T. Yamazaki, Y. Shen, T. Kikuta, N. Nakatani, T. Kawabat, Room temperature gas sensing of p-type TeO2 nanowires. Appl. Phys. Lett. 90(17), 173119 (2007). doi:10.1063/1.2732818
  28. M.B. Rahmani, S. Keshmiri, J. Yu, A. Sadek, L. Al-Mashat, A. Moafi, K. Latham, Y. Li, W. Wlodarski, K. Kalantar-Zadeh, Gas sensing properties of thermally evaporated lamellar MoO3. Sens. Actuators B: Chem. 145(1), 13–19 (2010). doi:10.1016/j.snb.2009.11.007
  29. S. Öztürk, N. Kılınç, Z.Z. Öztürk, Fabrication of ZnO nanorods for NO2 sensor applications: effect of dimensions and electrode position. J. Alloys Compd. 581, 196–201 (2013). doi:10.1016/j.jallcom.2013.07.063
  30. Y. Sahin, S. Öztürk, N. Kılınc, A. Kösemen, M. Erkovane, Z.Z. Öztürk, Electrical conduction and NO2 gas sensing properties of ZnO nanorods. Appl. Surf. Sci. 303, 90–96 (2014). doi:10.1016/j.apsusc.2014.02.083
  31. E. Oh, H.-Y. Choi, S.-H. Jung, S. Cho, J.C. Kim, K.-H. Lee, S.-W. Kang, J. Kim, J.-Y. Yun, S.-H. Jeong, High-performance NO2 gas sensor based on ZnO nanorod grown by ultrasonic irradiation. Sens. Actuators B: Chem. 141(1), 239–243 (2009). doi:10.1016/j.snb.2009.06.031
  32. F.-T. Liu, S.-F. Gao, S.-K. Pei, S.-C. Tseng, C.-H.J. Liu, ZnO nanorod gas sensor for NO2 detection. J. Taiwan Inst. Chem. E. 40(5), 528–532 (2009). doi:10.1016/j.jtice.2009.03.008
  33. D. Yan, M. Hu, S. Li, J. Liang, Y. Wu, S. Ma, Electrochemical deposition of ZnO nanostructures onto porous silicon and their enhanced gas sensing to NO2 at room temperature. Electrochim. Acta 115, 297–305 (2014). doi:10.1016/j.electacta.2013.10.007
  34. J. Park, J.-Y. Oh, Highly-sensitive NO2 detection of ZnO nanorods grown by a sonochemical process. J. Korean Phys. Soc. 55(3), 1119–1122 (2009)
  35. L. Shi, A.J.T. Naik, J.B.M. Goodall, C. Tighe, R. Gruar, R. Binions, I. Parkin, J. Darr, Highly sensitive ZnO nanorod- and nanoprism-based NO2 gas sensors: size and shape control using a continuous hydrothermal pilot plant. Langmuir 29(33), 10603–10609 (2013). doi:10.1021/la402339m
  36. H.V. Han, N.D. Hoa, P.V. Tong, H. Nguyen, N.V. Hieu, Single-crystal zinc oxide nanorods with nanovoids as highly sensitive NO2 nanosensors. Mater. Lett. 94, 41–43 (2013). doi:10.1016/j.matlet.2012.12.006
  37. P. Rai, Y.-S. Kim, H.-M. Song, M.-K. Song, Y.-T. Yu, The role of gold catalyst on the sensing behavior of ZnO nanorods for CO and NO2 gases. Sens. Actuators B: Chem. 165(1), 133–142 (2012). doi:10.1016/j.snb.2012.02.030
  38. J. Xu, Y. Yu, X. He, J. Sun, F. Liu, G. Lu, Synthesis of hierarchical ZnO orientation-ordered film by chemical bath deposition and its gas sensing properties. Mater. Lett. 81, 145–147 (2012). doi:10.1016/j.matlet.2012.04.090
  39. C.-J. Chang, C.-Y. Lin, J.-K. Chen, M.-H. Hsu, Ce-doped ZnO nanorods based low operation temperature NO2 gas sensors. Ceram. Int. 40(7), 10867–10875 (2014). doi:10.1016/j.ceramint.2014.03.080
  40. S. Bai, L. Chen, S. Chen, R. Luo, D. Li, A. Chen, C.C. Liu, Reverse microemulsion in situ crystallizing growth of ZnO nanorods and application for NO2 sensor. Sens. Actuators B: Chem. 190, 760–767 (2014). doi:10.1016/j.snb.2013.09.032
  41. B. Shouli, L. Xin, L. Dianqing, C. Song, L. Ruixian, C. Aifan, Synthesis of ZnO nanorods and its application in NO2 sensors. Sens. Actuators B: Chem. 153(1), 110–116 (2011). doi:10.1016/j.snb.2010.10.010
  42. S. An, S. Park, H. Ko, C. Jin, W.I. Lee, C. Lee, Enhanced gas sensing properties of branched ZnO nanowires. Thin Solid Films 547, 241–245 (2013). doi:10.1016/j.tsf.2013.02.021
  43. M.-W. Ahn, K.-S. Park, J.-H. Heo, D.-W. Kim, K.J. Choi, J.-G. Park, On-chip fabrication of ZnO-nanowire gas sensor with high gas sensitivity. Sens. Actuators B: Chem. 138(1), 168–173 (2009). doi:10.1016/j.snb.2009.02.008
  44. E.R. Waclawik, J. Chang, A. Ponzoni, I. Concina, D. Zappa, E. Comini, N. Motta, G. Faglia, G. Sberveglieri, Functionalised zinc oxide nanowire gas sensors: enhanced NO2 gas sensor response by chemical modification of nanowire surfaces. Beilstein J. Nanotechnol. 3, 368–377 (2012). doi:10.3762/bjnano.3.43
  45. H.-U. Lee, K. Ahn, S.-J. Lee, J.-P. Kim, H.-G. Kim, S.-Y. Jeong, C.-R. Cho, ZnO nanobarbed fibers: fabrication, sensing NO2 gas, and their sensing mechanism. Appl. Phys. Lett. 98(19), 193114 (2011). doi:10.1063/1.3590202
  46. S.-W. Fan, A.K. Srivastava, V.P. Dravid, Nanopatterned polycrystalline ZnO for room temperature gas sensing. Sens. Actuators B: Chem. 144(1), 159–163 (2010). doi:10.1016/j.snb.2009.10.054
  47. A.Z. Sadek, W. Wlodarski, K. Kalantar-zadeh, S. Choopun, ZnO nanobelt based conductometric H2 and NO2 gas sensors, in Proceedings of Sensors IEEE (2005), pp. 1326–1329. doi:10.1109/ICSENS.2005.1597952
  48. R.C. Pawar, J.-W. Lee, V.B. Patil, C.S. Lee, Synthesis of multi-dimensional ZnO nanostructures in aqueous medium for the application of gas sensor. Sens. Actuators B: Chem. 187, 323–330 (2013). doi:10.1016/j.snb.2012.11.100
  49. M. Hjiri, L.E. Mir, S.G. Leonardi, N. Donato, G. Neri, CO and NO2 selective monitoring by ZnO-based sensors. Nanomaterials 3(3), 357–369 (2013). doi:10.3390/nano3030357
  50. J.X. Wang, X.W. Sun, Y. Yang, C.M.L. Wu, N–P transition sensing behaviors of ZnO nanotubes exposed to NO2 gas. Nanotechnology 20(46), 465501 (2009). doi:10.1088/0957-4484/20/46/465501
  51. P. Rai, S. Raj, K.-J. Ko, K.-K. Park, Y.-T. Yu, Synthesis of flower-like ZnO microstructures for gas sensor applications. Sens. Actuators B: Chem. 178, 107–112 (2013). doi:10.1016/j.snb.2012.12.031
  52. S. Bai, T. Guo, D. Li, R. Luo, A. Chen, C.C. Liu, Intrinsic sensing properties of the flower-like ZnO nanostructures. Sens. Actuators B: Chem. 182, 747–754 (2013). doi:10.1016/j.snb.2013.03.077
  53. A. Forleo, L. Francioso, S. Capone, P. Siciliano, P. Lommens, Z. Hens, Synthesis and gas sensing properties of ZnO quantum dots. Sens. Actuators B: Chem. 146(1), 111–115 (2010). doi:10.1016/j.snb.2010.02.059
  54. B. Shouli, C. Liangyuan, H. Jingwei, L. Dianqing, L. Ruixian, C. Aifan, C.C. Liu, Synthesis of quantum size ZnO crystals and their gas sensing properties for NO2. Sens. Actuators B: Chem. 159(1), 97–102 (2011). doi:10.1016/j.snb.2011.06.056
  55. S. Bai, J. Hu, D. Li, R. Luo, A. Chen, C.C. Liu, Quantum-sized ZnO nanoparticles: synthesis, characterization and sensing properties for NO2. J. Mater. Chem. 21, 12288–12294 (2011). doi:10.1039/c1jm11302j
  56. D. Li, J. Hu, F. Fan, S. Bai, R. Luo, A. Chen, C.C. Liu, Quantum-sized ZnO nanoparticles synthesized in aqueous medium for toxic gases detection. J. Alloys Compd. 539, 205–209 (2012). doi:10.1016/j.jallcom.2012.05.106
  57. P. Rai, Y.-T. Yu, Citrate-assisted hydrothermal synthesis of single crystalline ZnO nanoparticles for gas sensor application. Sens. Actuators B: Chem. 173, 58–65 (2012). doi:10.1016/j.snb.2012.05.068
  58. F. Fan, Y. Feng, S. Bai, J. Feng, A. Chen, D. Li, Synthesis and gas sensing properties to NO2 of ZNO nanoparticles. Sens. Actuators B: Chem. 185, 377–382 (2013). doi:10.1016/j.snb.2013.05.020
  59. J.H. Jun, J. Yun, K. Cho, I.-S. Hwang, J.-H. Lee, S. Kim, Necked ZnO nanoparticle-based NO2 sensors with high and fast response. Sens. Actuators B: Chem. 140(2), 412–417 (2009). doi:10.1016/j.snb.2009.05.019
  60. T.V. Kolekar, S.S. Bandgar, S.S. Shirguppikar, V.S. Ganachari, Synthesis and characterization of ZnO nanoparticles for efficient gas sensors. Arch. Appl. Sci. Res. 5(6), 20–28 (2013)
  61. S. Bai, C. Sun, T. Guo, R. Luo, Y. Lin, A. Chen, L. Sun, J. Zhang, Low temperature electrochemical deposition of nanoporous ZnO thin films as novel NO2 sensors. Electrochim. Acta 90, 530–534 (2013). doi:10.1016/j.electacta.2012.12.060
  62. C. Zhang, M. Debliquy, H. Liao, Deposition and microstructure characterization of atmospheric plasma-sprayed ZnO coatings for NO2 detection. Appl. Surf. Sci. 256(20), 5905–5910 (2010). doi:10.1016/j.apsusc.2010.03.072
  63. M.A. Chougule, S. Sen, V.B. Patil, Fabrication of nanostructured ZnO thin film sensor for NO2 monitoring. Ceram. Int. 38(4), 2685–2692 (2012). doi:10.1016/j.ceramint.2011.11.036
  64. J. Zhang, S. Wang, Y. Wang, M. Xu, H. Xia, S. Zhang, W. Huang, X. Guo, S. Wu, ZnO hollow spheres: preparation, characterization, and gas sensing properties. Sens. Actuators B: Chem. 139(2), 411–417 (2009). doi:10.1016/j.snb.2009.03.014
  65. M.Z. Ahmad, J. Chang, M.S. Ahmad, E.R. Waclawik, W. Wlodarski, Non-aqueous synthesis of hexagonal ZnO nanopyramids: gas sensing properties. Sens. Actuators B: Chem. 177, 286–294 (2013). doi:10.1016/j.snb.2012.11.013
  66. D. Calestani, M. Zhaa, R. Mosca, A. Zappettini, M.C. Carotta, V. Di Natale, L. Zanotti, Growth of ZnO tetrapods for nanostructure-based gas sensors. Sens. Actuators B: Chem. 144(2), 472–478 (2010). doi:10.1016/j.snb.2009.11.009
  67. Y. Xie, Y. He, P.L. Irwin, T. Jin, X. Shi, Antibacterial activity and mechanism of action of zinc oxide nanoparticles against Campylobacter jejuni. Appl. Environ. Microbiol. 77(7), 2325–2331 (2011). doi:10.1128/AEM.02149-10
  68. S. Hackenberg, A. Scherzed, A. Technau, K. Froelich, R. Hagen, N. Kleinsasser, Functional responses of human adipose tissue-derived mesenchymal stem cells to metal oxide nanoparticles in vitro. J. Biomed. Nanotechnol. 9(1), 86–95 (2013). doi:10.1166/jbn.2013.1473
  69. N. Yamazoe, New approaches for improving semiconductor gas sensors. Sens. Actuators B 5(1–4), 7–19 (1991). doi:10.1016/0925-4005(91)80213-4
  70. R. Kumar, G. Kumar, A. Umar, Zinc oxide nanomaterials for photocatalytic degradation of methyl orange: a review. Nanosci. Nanotechnol. Lett. 6(8), 631–650 (2014). doi:10.1166/nnl.2014.1879
  71. S.A. Chevtchenko, J.C. Moore, U. Özgür, X. Gu, A.A. Baski, H. Morkoc, B. Nemeth, J.E. Nause, Comparative study of the (0001) and (000) surfaces of ZnO. Appl. Phys. Lett. 89(18), 182111 (2006). doi:10.1063/1.2378589
  72. J. Lahiri, S. Senanayake, M. Batzill, Soft X-ray photoemission of clean and sulfur covered polar ZnO surfaces: a view of the stabilization of polar oxide surfaces. Phys. Rev. B 78, 155414 (2008). doi:10.1103/PhysRevB.78.155414
  73. O. Dulub, U. Diebold, G. Kresse, Novel stabilization mechanism on polar surfaces: ZnO(0001)-Zn. Phys. Rev. Lett. 90, 016102 (2003). doi:10.1103/PhysRevLett.90.016102
  74. P.S. Bagus, F. Illas, G. Pacchioni, F. Parmigiani, Mechanisms responsible for chemical shifts of core-level binding energies and their relationship to chemical bonding. J. Electron. Spectrosc. Relat. Phenom. 100(1–3), 215–236 (1999). doi:10.1016/S0368-2048(99)00048-1
  75. G. Kresse, O. Dulub, U. Diebold, Competing stabilization mechanism of the polar ZnO (0001)-Zn surface. Phys. Rev. B 68, 245409 (2003). doi:10.1103/PhysRevB.68.245409
  76. A. Önsten, D. Stoltz, P. Palmgren, S. Yu, M. Göthelid, U.O. Karlsson, Water adsorption on ZnO(0001): transition from triangular surface structure to a disordered hydroxyl terminated phase. J. Phys. Chem. C 114(25), 11157–11161 (2010). doi:10.1021/jp1004677
  77. M. Valtiner, X. Torrelles, A. Pareek, S. Borodin, H. Gies, G. Grundmeier, In situ study of the polar ZnO(0001)-Zn surface in alkaline electrolytes. J. Phys. Chem. C 114(36), 15440–15447 (2010). doi:10.1021/jp1047024
  78. M. Kunat, S.G. Girol, T. Becker, U. Burghaus, C. Wöll, Stability of the polar surfaces of ZnO: a reinvestigation using He-atom scattering. Phys. Rev. B 66, 081402 (2002). doi:10.1103/PhysRevB.66.081402
  79. B. Meyer, D. Marx, Density-functional study of the structure and stability of ZnO surfaces. Phys. Rev. B 67, 035403 (2003). doi:10.1103/PhysRevB.67.035403
  80. N. Han, X. Wu, L. Chai, H. Liu, Y. Chen, Counterintuitive sensing mechanism of ZnO nanoparticle based gas sensors. Sens. Actuators B: Chem. 150(1), 230–238 (2010). doi:10.1016/j.snb.2010.07.009
  81. Y. Zhang, J. Xu, Q. Xiang, H. Li, Q.Y. Pan, P.C. Xu, Brush-like hierarchical ZnO nanostructures: synthesis, photoluminescence and gas sensor properties. J. Phys. Chem. C 113(9), 3430–3435 (2009). doi:10.1021/jp8092258
  82. C. Li, L. Li, Z. Du, H. Yu, Y. Xiang, Y. Li, Y. Cai, T. Wang, Rapid and ultrahigh ethanol sensing based on Au-coated ZnO nanorods. Nanotechnology 19(3), 035501 (2008). doi:10.1088/0957-4484/19/03/035501
  83. H. Ihokura, SnO2-based inflammable gas sensors. Doctoral Thesis, Kyushu University (1983), pp. 52–57
  84. H. Mitsudo, Ceramics for gas and humidity sensors (part I)—gas sensor. Ceramics 15, 339–345 (1980)
  85. S. Das, S. Ghosh, Fabrication of different morphologies of ZnO superstructures in presence of synthesized ethylammonium nitrate (EAN) ionic liquid: synthesis, characterization and analysis. Dalton Trans. 42, 1645–1656 (2013). doi:10.1039/c2dt31920a
  86. M. Yin, Y. Gu, I.L. Kuskovsky, T. Andelman, Y. Zhu, G.F. Neumark, Zinc oxide quantum rods. J. Am. Chem. Soc. 126(20), 6206–6207 (2004). doi:10.1021/ja031696+
  87. L.J. Bellamy, The Infrared Spectra of Complex Molecules, vol. 1 (Chapman and Hall, London, 1975), p. 378
  88. C.H. Hung, W.T. Whang, Effect of surface stabilization of nanoparticles on luminescent characteristics in ZnO/poly(hydroxyethyl methacrylate) nanohybrid films. J. Mater. Chem. 15, 267–274 (2005). doi:10.1039/b405497k
  89. R. Ullah, J. Dutta, Photocatalytic degradation of organic dyes with manganese-doped ZnO nanoparticles. J. Hazard. Mater. 156(1–3), 194–200 (2008). doi:10.1016/j.jhazmat.2007.12.033
  90. T. Yoshida, K. Terada, D. Schlettwein, T. Oekermann, T. Sugiura, H. Minoura, Electrochemical self-assembly of nanoporous ZnO/Eosin Y thin films and their sensitized photoelectrochemical performance. Adv. Mater. 12(16), 1214–1217 (2000). doi:10.1002/1521-4095(200008)12::16<1214:AID-ADMA1214>3.0.CO;2-Z
  91. T. Yoshida, J. Zhang, D. Komatsu, S. Sawatani, H. Minoura, Th. Pauporté, D. Lincot, T. Oekermann, L. Peter, D. Schlettwain, H. Tada, D. Wöhrle, K. Funabiki, M. Matsui, H. Miura, H. Yanagi, Electrodeposition of inorganic/organic hybrid thin films. Adv. Funct. Mater. 19(1), 17–43 (2009). doi:10.1002/adfm.200700188
  92. P. Liu, W.Y. Li, J.B. Zhang, Electrodeposition and photocatalytic selectivity of ZnO/methyl blue hybrid thin films. J. Phys. Chem. C 113(32), 14279–14282 (2009). doi:10.1021/jp903896j
  93. J.H. Yang, X.Y. Liu, L.L. Yang, Y.X. Wang, Y.J. Zhang, J.H. Lang, Effect of annealing temperature on the structure and optical properties of ZnO nanoparticles. J. Alloys Compd. 477(1–2), 632–635 (2009). doi:10.1016/j.jallcom.2008.10.135
  94. S.D. Shinde, G.E. Patil, D.D. Kajale, V.G. Wagh, V.B. Gaikwad, G.H. Jain, Effect of annealing on gas sensing performance of nanostructured ZnO thick film resistors. Int. J. Smart Sens. Intell. Syst. 5, 277–294 (2012)
  95. W.-J. Li, E.-W. Shi, W.-Z. Zhong, Z.-W. Yin, Growth mechanism and growth habit of oxide crystals. J. Cryst. Growth 203(1–2), 186–196 (1999). doi:10.1016/S0022-0248(99)00076-7
  96. G. Lu, J. Xu, J. Sun, Y. Yu, Y. Zhang, F. Liu, UV-enhanced room temperature NO2 sensor using ZnO nanorods modified with SnO2 nanoparticles. Sens. Actuators B: Chem. 162(1), 82–88 (2012). doi:10.1016/j.snb.2011.12.039
  97. C. Wang, L. Yin, L. Zhang, D. Xiang, R. Gao, Metal oxide gas sensors: gas response and influencing factors. Sensors 10(3), 2088–2106 (2010). doi:10.3390/s100302088
  98. Q. Qi, T. Zhang, X. Zheng, H. Fan, L. Liu, R. Wang, Y. Zeng, Electrical Response of Sm2O3-doped SnO2 to C2H2 and effect of humidity interference. Sens. Actuators B: Chem. 134(1), 36–42 (2008). doi:10.1016/j.snb.2008.04.011
  99. J. Gong, Q. Chen, M. Lian, N. Liu, R.G. Stevenson, F. Adamic, Micromachined nanocrystalline silver doped SnO2 H2S sensor. Sens. Actuators B: Chem. 114(1), 32–39 (2006). doi:10.1016/j.snb.2005.04.035
  100. E. Traversa, Ceramic sensors for humidity detection: the state-of-the-art and future developments. Sens. Actuators B: Chem. 23(2–3), 135–156 (1995). doi:10.1016/0925-4005(94)01268-M
  101. Z. Bai, C. Xie, M. Hu, S. Zhang, D. Zeng, Effect of humidity on the gas sensing property of the tetrapod-shaped ZnO nanopowder sensor. Mater. Sci. Eng. B 149(1), 12–17 (2008). doi:10.1016/j.mseb.2007.11.020
  102. R.G. Pavelko, H. Daly, C. Hardacre, A.A. Vasiliev, E. Llobet, Interaction of water, hydrogen and their mixtures with SnO2 based materials: the role of surface hydroxyl groups in detection mechanisms. Phys. Chem. Chem. Phys. 12(11), 2639–2647 (2010). doi:10.1039/b921665k
  103. A. Stanoiu, C.E. Simion, S. Somacescu, NO2 sensing mechanism of ZnO–Eu2O3 binary oxide under humid air conditions. Sens. Actuators B: Chem. 186, 687–694 (2013). doi:10.1016/j.snb.2013.06.083
  104. F.-S. Tsai, S.-J. Wang, Enhanced sensing performance of relative humidity sensors using laterally grown ZnO nanosheets. Sens. Actuators B: Chem. 193, 280–287 (2014). doi:10.1016/j.snb.2013.11.069
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