中国物理B ›› 2021, Vol. 30 ›› Issue (7): 77301-077301.doi: 10.1088/1674-1056/abfa0c

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Quantifying plasmon resonance and interband transition contributions in photocatalysis of gold nanoparticle

Liang Dong(董亮), Chengyun Zhang(张成云), Lei Yan(严蕾), Baobao Zhang(张宝宝), Huan Chen(陈环), Xiaohu Mi(弥小虎), Zhengkun Fu(付正坤), Zhenglong Zhang(张正龙), and Hairong Zheng(郑海荣)   

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
  • 收稿日期:2021-01-19 修回日期:2021-03-27 接受日期:2021-04-21 出版日期:2021-06-22 发布日期:2021-06-26
  • 通讯作者: Lei Yan, Zhenglong Zhang E-mail:yanlei@snnu.edu.cn;zlzhang@snnu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFA0211300), the National Natural Science Foundation of China (Grant Nos. 92050112, 12074237, and 12004233), and the Fundamental Research Funds for Central Universities, China (Grant Nos. GK202103010 and GK202103018).

Quantifying plasmon resonance and interband transition contributions in photocatalysis of gold nanoparticle

Liang Dong(董亮), Chengyun Zhang(张成云), Lei Yan(严蕾), Baobao Zhang(张宝宝), Huan Chen(陈环), Xiaohu Mi(弥小虎), Zhengkun Fu(付正坤), Zhenglong Zhang(张正龙), and Hairong Zheng(郑海荣)   

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China
  • Received:2021-01-19 Revised:2021-03-27 Accepted:2021-04-21 Online:2021-06-22 Published:2021-06-26
  • Contact: Lei Yan, Zhenglong Zhang E-mail:yanlei@snnu.edu.cn;zlzhang@snnu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2020YFA0211300), the National Natural Science Foundation of China (Grant Nos. 92050112, 12074237, and 12004233), and the Fundamental Research Funds for Central Universities, China (Grant Nos. GK202103010 and GK202103018).

摘要: Localized surface plasmon has been extensively studied and used for the photocatalysis of various chemical reactions. However, the different contributions between plasmon resonance and interband transition in photocatalysis has not been well understood. Here, we study the photothermal and hot electrons effects for crystal transformation by combining controlled experiments with numerical simulations. By photo-excitation of NaYF4:Eu3+@Au composite structure, it is found that the plasmonic catalysis is much superior to that of interband transition in the experiments, owing to the hot electrons generated by plasmon decay more energetic to facilitate the reaction. We emphasize that the energy level of hot electrons plays an essential role for improving the photocatalytic activity. The results provide guidelines for improving the efficiency of plasmonic catalysis in future experimental design.

关键词: surface plasmon, interband transition, hot electron, photothermal effect

Abstract: Localized surface plasmon has been extensively studied and used for the photocatalysis of various chemical reactions. However, the different contributions between plasmon resonance and interband transition in photocatalysis has not been well understood. Here, we study the photothermal and hot electrons effects for crystal transformation by combining controlled experiments with numerical simulations. By photo-excitation of NaYF4:Eu3+@Au composite structure, it is found that the plasmonic catalysis is much superior to that of interband transition in the experiments, owing to the hot electrons generated by plasmon decay more energetic to facilitate the reaction. We emphasize that the energy level of hot electrons plays an essential role for improving the photocatalytic activity. The results provide guidelines for improving the efficiency of plasmonic catalysis in future experimental design.

Key words: surface plasmon, interband transition, hot electron, photothermal effect

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
31.15.xf (Finite-difference schemes)