Enhanced methanol gas-sensing performance of Ce-doped In2O3 porous nanospheres prepared by hydrothermal method

Abstract In this work, novel Ce-doped In2O3 porous nanospheres have been prepared by calcining precursors obtained via a facile template-free hydrothermal method. The morphology and structure of the as-prepared samples were characterized by X-ray diffraction (XRD), inductively coupled plasma atomic emission spectroscopy (ICP-AES), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). FESEM and TEM images showed that as-prepared In2O3 samples were uniform and well-dispersed nanospheres with size of 200–300 nm, which were composed of numerous small nanocrystallites. XRD, ICP, and XPS spectroscopy were used to identify the products structure and the peak shifts in spectroscopies confirmed that the Ce element was doped in cubic In2O3. Compared with pure In2O3 samples, Ce-doped In2O3 porous nanospheres showed excellent sensing performance toward methanol at the operating temperature of 320 °C and had a response of about 35.2–100 ppm methanol, which was much higher than that of the sensor based on pure In2O3 nanospheres. In addition, Ce-doped In2O3 porous nanospheres exhibited good selectivity and long-term stability.

[1]  Victor V. Sysoev,et al.  Percolating SnO2 nanowire network as a stable gas sensor: Direct comparison of long-term performance versus SnO2 nanoparticle films , 2009 .

[2]  Yali Cao,et al.  Preparation and gas-sensing properties of pure and Nd-doped ZnO nanorods by low-heating solid-state chemical reaction , 2009 .

[3]  Jiaqiang Xu,et al.  SnO2 nanorods and hollow spheres: Controlled synthesis and gas sensing properties , 2009 .

[4]  J. Sakai,et al.  Co-doped In2O3 thin films: Room temperature ferromagnets , 2006 .

[5]  Zhihao Yuan,et al.  Nanopillar ZnO gas sensor for hydrogen and ethanol , 2007 .

[6]  Dan Han,et al.  Hydrothermal synthesis of porous In2O3 nanospheres with superior ethanol sensing properties , 2014 .

[7]  Lallan Yadava,et al.  Sensing properties of CdS-doped tin oxide thick film gas sensor , 2010 .

[8]  Hua Zhao,et al.  Controlled synthesis and photocatalytic properties of porous hollow In2O3 microcubes with different sizes , 2011 .

[9]  H. Fan,et al.  Zn-doped In2O3 hollow spheres: mild solution reaction synthesis and enhanced Cl2 sensing performance , 2014 .

[10]  Kengo Shimanoe,et al.  Theory of power laws for semiconductor gas sensors , 2008 .

[11]  Tianmo Liu,et al.  Gas sensing mechanism and properties of Ce-doped SnO2 sensors for volatile organic compounds , 2012 .

[12]  Guangsheng Guo,et al.  Synthesis, characterization and alcohol-sensing properties of rare earth doped In2O3 hollow spheres , 2013 .

[13]  A. Teleki,et al.  Semiconductor gas sensors: dry synthesis and application. , 2010, Angewandte Chemie.

[14]  Wenyan Fang,et al.  Electrochemical performance and electroreduction of maleic acid on Ce-doped nano-TiO2 film electrode , 2013 .

[15]  H. Fan,et al.  Mesoporous In2O3 structures: Hydrothermal synthesis and enhanced Cl2 sensing performance , 2014 .

[16]  S. Capone,et al.  Methanol gas-sensing properties of CeO2–Fe2O3 thin films , 2006 .

[17]  Yang Li,et al.  Tin oxide/graphene composite fabricated via a hydrothermal method for gas sensors working at room temperature , 2012 .

[18]  Hao Zhang,et al.  Controllable synthesis and HCHO-sensing properties of In2O3 micro/nanotubes with different diameters , 2014 .

[19]  Hiranmay Saha,et al.  ZnO–SnO2 based composite type gas sensor for selective hydrogen sensing , 2014 .

[20]  H. Fan,et al.  Phase transformation (cubic to rhombohedral): the effect on the NO2 sensing performance of Zn-doped flower-like In2O3 structures , 2014 .

[21]  H. Abdullah,et al.  Gamma irradiation effect on the structural, morphology and electrical properties of ZnO-CuO doped PVA nanocomposite thin films for Escherichia coli sensor , 2014 .

[22]  K. Rajanna,et al.  Copper (II) oxide thin film for methanol and ethanol sensing , 2011 .

[23]  N. Yamazoe,et al.  Hollow SnO2/α-Fe2O3 spheres with a double-shell structure for gas sensors , 2014 .

[24]  M. Carotta,et al.  (Ti,Sn) solid solutions as functional materials for gas sensing , 2014 .

[25]  Xiumei Xu,et al.  One-step synthesis and gas sensing properties of hierarchical Cd-doped SnO2 nanostructures , 2014 .

[26]  Jinyun Liu,et al.  Shape- and phase-controlled synthesis of In2O3 with various morphologies and their gas-sensing properties , 2009 .

[27]  Xiangting Dong,et al.  Room-temperature phosphorescence sensor based on manganese doped zinc sulfide quantum dots for detection of urea , 2014 .

[28]  Changsheng Xie,et al.  Preparation and gas-sensing properties of Ce-doped ZnO thin-film sensors by dip-coating , 2007 .

[29]  S. Pandey,et al.  Influence of Sb doping on the structural, optical, electrical and acetone sensing properties of In2O3 thin films , 2014 .

[30]  P. P. Sahay,et al.  Al-doped ZnO thin films as methanol sensors , 2008 .

[31]  G. N. Chaudhari,et al.  Acetone gas-sensing performance of Sr-doped nanostructured LaFeO3 semiconductor prepared by citrate sol-gel route , 2011 .

[32]  Yuan Zhang,et al.  Studies on alcohol sensing mechanism of ZnO based gas sensors , 2008 .

[33]  Xianke Zhang,et al.  Facile fabrication of aligned SnO2 nanotube arrays and their field-emission property , 2014 .

[34]  Jing Wang,et al.  Enhanced room temperature sensing of Co3O4-intercalated reduced graphene oxide based gas sensors , 2013 .

[35]  Peng Sun,et al.  Hydrothermal preparation and gas sensing properties of Zn-doped SnO2 hierarchical architectures , 2014 .

[36]  C. Duan,et al.  Neodymium doped lanthanum oxysulfide as optical temperature sensors , 2014 .

[37]  Yongxiang Li,et al.  Influence of synthesis conditions on the microstructure of Li–Ta–Ti–O microsheets by molten salt method , 2014 .

[38]  R. Yousefi,et al.  Growth and optical properties of ZnO–In2O3 heterostructure nanowires , 2013 .

[39]  Yun Chan Kang,et al.  Enhanced C2H5OH sensing characteristics of nano-porous In2O3 hollow spheres prepared by sucrose-mediated hydrothermal reaction , 2011 .

[40]  R. P. Pant,et al.  Effect of Ni doping on thick film SnO2 gas sensor , 2006 .

[41]  H. Ahn,et al.  Fe-doped In2O3/α-Fe2O3 core/shell nanofibers fabricated by using a co-electrospinning method and its magnetic properties , 2014 .

[42]  Kazunari Domen,et al.  Dioxygen adsorption on well-outgassed and partially reduced cerium oxide studied by FT-IR , 1989 .

[43]  Highly sensitive fiber-optic oxygen sensor based on palladium tetrakis (4-carboxyphenyl)porphyrin doped in ormosil , 2014 .

[44]  F. Yakuphanoglu,et al.  Preparation of semiconductor ZnO powders by sol-gel method: Humidity sensors , 2013 .

[45]  Fang Yi,et al.  Low-voltage blue light emission from n-ZnO/p-GaN heterojunction formed by RF magnetron sputtering method , 2014 .

[46]  Teng Fei,et al.  Toluene and ethanol sensing performances of pristine and PdO-decorated flower-like ZnO structures , 2013 .

[47]  Peng Song,et al.  Preparation, characterization and acetone sensing properties of Ce-doped SnO2 hollow spheres , 2012 .

[48]  Guodong Li,et al.  SnO2 nanoparticle-coated In2O3 nanofibers with improved NH3 sensing properties , 2014 .

[49]  Peng Sun,et al.  Preparation and gas sensing properties of hierarchical flower-like In2O3 microspheres , 2013 .

[50]  Degradation of magnetic ordering in In2O3 thin films due to Mn and Cu dopings , 2007 .

[51]  F. Iacomi,et al.  Synthesis of nanocrystalline La–Pb–Fe–O perovskite and methanol-sensing characteristics , 2012 .

[52]  C. Ucurum,et al.  Quasi-static capacitance-voltage characteristics of pentacene-based metal-oxide-semiconductor structures , 2013, Microelectron. J..

[53]  Yanshuang Wang,et al.  Synthesis of hierarchical SnO2 nanostructures assembled with nanosheets and their improved gas sensing properties , 2013 .

[54]  Ning Han,et al.  CdO activated Sn-doped ZnO for highly sensitive, selective and stable formaldehyde sensor , 2011 .

[55]  Abdullah M. Asiri,et al.  Detection of trivalent-iron based on low-dimensional semiconductor metal oxide nanostructures for environmental remediation by ICP-OES technique , 2014 .

[56]  Wei Liu,et al.  COMPLETE OXIDATION OF CARBON MONOXIDE AND METHANE OVER METAL-PROMOTED FLUORITE OXIDE CATALYSTS , 1994 .

[57]  Y. Sung,et al.  Structural and electrical properties of sputtering power and gas pressure on Ti-dope In2O3 transparent conductive films by RF magnetron sputtering , 2013 .

[58]  Chaoyi Yan,et al.  Room temperature CO gas sensing using Zn-doped In2O3 single nanowire field effect transistors , 2010 .

[59]  R. Ruffo,et al.  Macroporous WO3 thin films active in NH3 sensing: role of the hosted Cr isolated centers and Pt nanoclusters. , 2011, Journal of the American Chemical Society.

[60]  Yanzhao Yang,et al.  Fabrication of metallic ions doped monodispersed porous In2O3 nanospheres , 2013 .

[61]  Doina Lutic,et al.  Pt-doped semiconductive oxides loaded on mesoporous SBA-15 for gas sensing , 2014 .