Study on gas sensibility of ethanol gas sensor based on flower-ball shaped Ag/Bi2WO6

摘要

? 2022 Elsevier B.V.Although Bi2WO6 has been applied in various field, there are few reports on the application of gas sensing. In this work, Ag loaded flower-ball shaped Bi2WO6 composite nanomaterials were synthesised by hydrothermal method. The Ag content was optimized for the first time. It was found that when 2 % Ag was added, Ag/Bi2WO6 material possessed high sensitivity and low optimal working temperature (240℃). Compared with pure Bi2WO6 (11 s and 32 s), Ag/Bi2WO6 possessed ultrashort response and recovery time of 7 s and 25 s. It exhibited better ethanol gas selectivity and stability. Unique crystal structure and Ag catalysis may lead to the improvement of gas sensing performance.