Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology;
and Department of Electronics;
College of Electronic Information and Optical Engineering;
Nankai University;
Tianjin 300350;
China;
School of Physics and Engineering and Key Laboratory of Materials Physics;
Ministry of Education;
Zhengzhou University;
Zhengzhou 450001;
China;
WO_(3)nanoparticles; Ag and Pt bimetals; Acetone sensing; Chemical sensitization; Recovery time;