ZnO/TiO2 nanocomposite rods synthesized by microwave-assisted method for humidity sensor application

Abstract The nanocomposite rods shows well known properties compared with nano structured materials for various applications like light-emitting diodes, electron field emitters, solar cells, optoelectronics, sensors, transparent conductors and fabrication of nano devices. Present paper investigates the properties of ZnO/TiO 2 nanocomposite rods. The bi component of ZnO/TiO 2 nanocomposite rods was synthesized by microwave-assisted method which is very simple, rapid and uniform in heating. The frequency of microwaves 2.45 GHz was used and temperature maintained 180 °C. Zinc acetate and titanium isopropoxide precursors were used in the preparation. The obtained ZnO/TiO 2 nanocomposite rods were annealed at 500 °C and 600 °C. ZnO/TiO 2 nanocomposite rods have been characterized by X-ray Diffraction (XRD) for average crystallite size and phase of the composite material, Particle Size Analyser (PSA) for average particle size, Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) for morphology study, Energy Dispersive X-ray Spectrometry (EDX) for elemental analysis, and Thermal Gravimetric and Differential Thermal Analysis (TG–DTA) for thermal property.

[1]  O. Volobujeva,et al.  ZnO Nanorods via Spray Deposition of Solutions Containing Zinc Chloride and Thiocarbamide , 2007, Nanoscale research letters.

[2]  A. Manthiram,et al.  Rapid microwave-solvothermal synthesis of phospho-olivine nanorods and their coating with a mixed conducting polymer for lithium ion batteries , 2008 .

[3]  M. A. Ahmed,et al.  Fascinating properties of multifunctional nanocomposites manganite/magnetite , 2014 .

[4]  L. Gao,et al.  Facile Synthesis of Polycrystalline NiO Nanorods Assisted by Microwave Heating , 2008 .

[5]  B. Yadav,et al.  Synthesis of TiO2-Nb2O5 and TiO2-CuO Nano Co-Oxides and Their Application as Solid State Humidity Sensors , 2011 .

[6]  B. Lu,et al.  Nanorod-like Fe2O3/graphene composite as a high-performance anode material for lithium ion batteries , 2013, Journal of Applied Electrochemistry.

[7]  Q. Guo,et al.  Ag nanoparticle/ZnO nanorods nanocomposites derived by a seed-mediated method and their photocatalytic properties , 2012 .

[8]  G. K. Pradhan,et al.  Fabrication of α-Fe2O3 nanorod/RGO composite: a novel hybrid photocatalyst for phenol degradation. , 2013, ACS applied materials & interfaces.

[9]  Guanghou Wang,et al.  Synthesis of ZnS nanorods by annealing precursor ZnS nanoparticles in NaCl flux , 2003 .

[10]  S. Zerkout,et al.  Preparation and characterization of ZnO nanorods grown into aligned TiO 2 nanotube array , 2010 .

[11]  Haibin Yang,et al.  Properties of humidity sensing ZnO nanorods-base sensor fabricated by screen-printing , 2008 .

[12]  R. Gedye,et al.  The rapid synthesis of organic compounds in microwave ovens , 1988 .

[13]  Yiping Zhao,et al.  Ag nanoparticle embedded TiO(2) composite nanorod arrays fabricated by oblique angle deposition: toward plasmonic photocatalysis. , 2013, ACS applied materials & interfaces.

[14]  R. Singh,et al.  Effect of thickness on structural, optical and mechanical properties of Mn doped ZnO nanocrystalline thin films RF sputtered in nitrogen gas environment , 2014 .

[15]  Katsuhiko Ariga,et al.  Natural tubule clay template synthesis of silver nanorods for antibacterial composite coating. , 2011, ACS applied materials & interfaces.

[16]  I. Djerdj,et al.  Photocatalytic degradation properties of Ni(OH)2 nanosheets/ZnO nanorods composites for azo dyes under visible-light irradiation , 2014 .

[17]  Shalendra Kumar,et al.  Growth and characterization of ZnO nanorods by microwave-assisted route: green chemistry approach , 2011 .

[18]  Wei Wu,et al.  Crystal structure transformation and dielectric properties of polymer composites incorporating zinc oxide nanorods , 2014, Macromolecular Research.

[19]  M. Willander,et al.  Fabrication of Well-Aligned ZnO Nanorods Using a Composite Seed Layer of ZnO Nanoparticles and Chitosan Polymer , 2013, Materials.