中国物理B ›› 2023, Vol. 32 ›› Issue (6): 68104-068104.doi: 10.1088/1674-1056/acbe30

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Enhanced xylene sensing performance of hierarchical flower-like Co3O4 via In doping

Jing Zhang(张京)1, Jianyu Ling(凌剑宇)1, Kuikun Gu(谷魁坤)1, Georgiy G. Levchenko1,3, and Xiao Liang(梁霄)1,2,†   

  1. 1 State Key Laboratory of Superhard Materials, Physics of College, Jilin University, Changchun 130012, China;
    2 Institute for Interdisciplinary Biomass Functional Materials Studies, Jilin Provincial Key Laboratory of Straw-Based Functional Materials, Jilin Engineering Normal University, Changchun 130052, China;
    3 Donetsk Institute for Physics and Engineering named after O. O. Galkin, NAS of Ukraine, Kyiv 03028, Ukraine
  • 收稿日期:2022-11-25 修回日期:2023-01-29 接受日期:2023-02-23 出版日期:2023-05-17 发布日期:2023-05-24
  • 通讯作者: Xiao Liang E-mail:xiaoliang732@163.com

Enhanced xylene sensing performance of hierarchical flower-like Co3O4 via In doping

Jing Zhang(张京)1, Jianyu Ling(凌剑宇)1, Kuikun Gu(谷魁坤)1, Georgiy G. Levchenko1,3, and Xiao Liang(梁霄)1,2,†   

  1. 1 State Key Laboratory of Superhard Materials, Physics of College, Jilin University, Changchun 130012, China;
    2 Institute for Interdisciplinary Biomass Functional Materials Studies, Jilin Provincial Key Laboratory of Straw-Based Functional Materials, Jilin Engineering Normal University, Changchun 130052, China;
    3 Donetsk Institute for Physics and Engineering named after O. O. Galkin, NAS of Ukraine, Kyiv 03028, Ukraine
  • Received:2022-11-25 Revised:2023-01-29 Accepted:2023-02-23 Online:2023-05-17 Published:2023-05-24
  • Contact: Xiao Liang E-mail:xiaoliang732@163.com

摘要: Metal ions doping is a typical approach for tuning sensing properties of metal oxide semiconductors based gas sensors. Herein, hierarchical flower-like pure and In-doped Co3O4 nanostructures assembled by porous two-dimensional (2D) nanosheets are synthesized via a solvothermal method and annealing process. The sensing measurements display that the In@Co3O4-4 based sensor possesses high response value of 55.9 toward 100 ppm xylene at 150 ℃, which is nearly 3.8 times larger than that of pure Co3O4 sensor. Furthermore, it possesses good selectivity and anti-humidity properties. Combined with the results of DFT calculations, the mechanism of enhanced gas sensing performance is analyzed systematically.

关键词: sensor, Co3O4, xylene, density functional theory (DFT)

Abstract: Metal ions doping is a typical approach for tuning sensing properties of metal oxide semiconductors based gas sensors. Herein, hierarchical flower-like pure and In-doped Co3O4 nanostructures assembled by porous two-dimensional (2D) nanosheets are synthesized via a solvothermal method and annealing process. The sensing measurements display that the In@Co3O4-4 based sensor possesses high response value of 55.9 toward 100 ppm xylene at 150 ℃, which is nearly 3.8 times larger than that of pure Co3O4 sensor. Furthermore, it possesses good selectivity and anti-humidity properties. Combined with the results of DFT calculations, the mechanism of enhanced gas sensing performance is analyzed systematically.

Key words: sensor, Co3O4, xylene, density functional theory (DFT)

中图分类号:  (Nanoscale materials and structures: fabrication and characterization)

  • 81.07.-b
07.07.Df (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)