%0 Journal Article
%T Influence of Synthesis Conditions on Microstructure and NO2 Sensing Properties of WO3 Porous Films Synthesized by Non-Hydrolytic Sol¨CGel Method
%A Cong Han
%A Dezhou Wei
%A Guodong Li
%A Pengfei Zhou
%A Sikai Zhao
%A Xiangxi Zhong
%A Yanbai Shen
%A Yunhai Zhang
%A Yuxin Ao
%J Archive of "Nanomaterials".
%D 2019
%R 10.3390/nano9010008
%X Nanostructured tungsten trioxide porous films were prepared by a non-hydrolytic sol¨Cgel method following the inorganic route in which ethanol and PEG were used as the oxygen-donor and structure-directing reagent, respectively. The effects of aging time of the precursor solution, PEG content, and calcination temperature on the structure, morphology, and NO2 sensing properties of WO3 films were systematically investigated by using the techniques of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and gas sensing measurements. The results demonstrated that a series of WO3 films with different microstructures could be obtained by manipulating the synthesis parameters. Furthermore, a suitable synthesis condition of WO3 films for NO2 sensing application was determined
%K WO3
%K porous films
%K non-hydrolytic sol¨Cgel
%K NO2
%K gas sensing
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6359434/