Highly sensitive cataluminescence gas sensors for 2-butanone based on g-C3N4sheets decorated with CuO nanoparticles.
A simple and facile ultrasound-assisted and calcining synthesis route was used to synthesize g-C3N4sheets decorated with CuO nanoparticles (CuO/g-C3N4). On the basis of the XRD, XPS as well as TEM analysis, CuO nanoparticles which have high density and uniformity were evenly dispersed on g-C3N4sheets to form a heterogeneous composite. The CuO/g-C3N4composite was fabricated to be a gas sensor for 2-butanone, a common volatile organic compound, based on the interesting cataluminescence (CTL) phenomenon of 2-butanone originating from its catalyzing oxidation on the surface of CuO/g-C3N4composite. The analytical characteristics of the CTL sensor based on CuO/g-C3N4composite sensing material for 2-butanone were systematically investigated under the optimal experimental conditions. It demonstrated a fast response and recovery time about less than 2 and 40 s, respectively. The linear range of the 2-butanone gas sensor was 16.11-161.08 μg mL-1(r = 0.998) and the limit of detection was 11.06 μg mL-1(S/N = 3).
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China.
Li
L
Li
Institute of Analytical and Bioanalytical Chemistry, Ulm University, 89081, Ulm, Germany.
Yuan
Y
Hu
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China.
Dongyan
D
Deng
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China.
Hongjie
H
Song
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan, 610064, China. lvy@scu.edu.cn.
Yi
Y
Lv
2-Butanone; Cataluminescence; CuO/g-C3N4; Gas sensors