NGHIÊN CỨU BIẾN TÍNH HẠT NiO LÊN DÂY NANO SnO 2 ẢNH HƯỞNG ĐẾN TÍNH CHẤT NHẠY KHÍ H 2 S
Từ khóa:
SnO2 nanowire, H2S gas, gas sensor
Tóm tắt
In this work, we present analytical research results on the modification of granular NiO onto SnO2
nanowires by electron beam evaporation followed by annealing at 600 oC for 3 h with a thickness of Ni of
3. nm; 5 nm and 10 nm to enhance H2S gas sensitivity. For samples with a thickness of Ni 5 nm, through
investigation of gas-sensitive properties, the sensitivity increased to 212 times at a temperature of 200 oC
with a concentration of 10 ppm and a fast recovery time of about 150 seconds.
Keywords: SnO2 nanowire, H2S gas, gas sensor
