TY - JOUR
T1 - Construction of nanoflowers-like Au@ZnO/ZnS/SnO2 heterostructure for conductometric cyclohexanone detection
AU - Wang, Bingliang
AU - Sun, Yongjiao
AU - Wang, Shizhen
AU - Wei, Zihan
AU - Lu, Zhiyuan
AU - Hou, Yuchen
AU - Zhang, Wendong
AU - Suematsu, Koichi
AU - Hu, Jie
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/1/15
Y1 - 2024/1/15
N2 - Au decorated ZnO/ZnS/SnO2 nanostructures were prepared and used as sensing materials for cyclohexanone gas detection. Ternary ZnO/ZnS/SnO2 nanostructures were fabricated after hydrothermal method, sulfuration and calcination at a specific temperature. The achieved heterostructures are in the shape of nanoflower and then decorated with different amounts of Au nanoparticles (NPs). The results of gas sensing measurements demonstrate that construction of heterojunctions between components and functionalization with Au NPs could remarkably enhance the gas sensing performance toward cyclohexanone gas. Especially, Au2@ZnO/ZnS/SnO2 gas sensor exhibits the highest response (497–100 ppm), fast response/recovery speed (1/50 s), low theoretic limit of detection (1.1 ppb) and better selectivity (Scyc./Sother > 15.2) at 260 ℃, 25% RH (∼24 ℃). The details of heterojunctions between the three components and spillover effect of Au NPs-related sensitization mechanism are discussed finally.
AB - Au decorated ZnO/ZnS/SnO2 nanostructures were prepared and used as sensing materials for cyclohexanone gas detection. Ternary ZnO/ZnS/SnO2 nanostructures were fabricated after hydrothermal method, sulfuration and calcination at a specific temperature. The achieved heterostructures are in the shape of nanoflower and then decorated with different amounts of Au nanoparticles (NPs). The results of gas sensing measurements demonstrate that construction of heterojunctions between components and functionalization with Au NPs could remarkably enhance the gas sensing performance toward cyclohexanone gas. Especially, Au2@ZnO/ZnS/SnO2 gas sensor exhibits the highest response (497–100 ppm), fast response/recovery speed (1/50 s), low theoretic limit of detection (1.1 ppb) and better selectivity (Scyc./Sother > 15.2) at 260 ℃, 25% RH (∼24 ℃). The details of heterojunctions between the three components and spillover effect of Au NPs-related sensitization mechanism are discussed finally.
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U2 - 10.1016/j.snb.2023.134754
DO - 10.1016/j.snb.2023.134754
M3 - Article
AN - SCOPUS:85174461068
SN - 0925-4005
VL - 399
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
M1 - 134754
ER -