Open AccessHydrothermal Synthesis and NH3 Gas Sensing Properties of Nanosheet WO3
Author(s) -
Fenglan Sun,
Changsheng Mu,
Dianzhong Wen,
Huajun Sun,
Xin Jü,
Jing Hu,
Yibo Dou
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/688/3/033079
Subject(s) - scanning electron microscope , hydrothermal circulation , nanosheet , morphology (biology) , materials science , hydrothermal synthesis , nanoparticle , chemical engineering , phase (matter) , nano , nuclear chemistry , nanotechnology , chemistry , organic chemistry , composite material , biology , engineering , genetics
WO 3 Nano powders had been synthesized by hydrothermal synthesis through acidification of Na 2 WO 4 ·2H 2 O at different PH value. The phase and morphology of WO 3 nano powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), respectively. The result showed that PH value effect the phase and morphology of WO 3 nano powders. The morphology of WO 3 was nanoparticles at PH=1, however became nanosheets at PH=2. The effect of PH value on the morphology of WO 3 nano powders was studied. NH 3 gas sensing properties of WO 3 nano powders were also studied. The result showed that WO 3 nanosheets enhanced NH 3 sensing performance to low concentration of NH 3 .