Construction of nanoflowers-like Au@ZnO/ZnS/SnO2 heterostructure for conductometric cyclohexanone detection

Bingliang Wang, Yongjiao Sun, Shizhen Wang, Zihan Wei, Zhiyuan Lu, Yuchen Hou, Wendong Zhang, Koichi Suematsu, Jie Hu

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号134754
ジャーナルSensors and Actuators B: Chemical
399
DOI
出版ステータス出版済み - 1月 15 2024

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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