Boosting photocatalytic performance in Cu doped ZnO nanocomposites: Investigation of exciton-free carrier conversion and oxygen vacancy dynamics

Zhang，Ze Huan1; Bai，Hong jie2; Bai，Xueyuan3; Hu，Wen Yu4; Yong-Deng，4; Ma，Zhen yu5; Dong，Jia wei5; Wang，Xiao Yi5; Ruterana，Pierre6; Chen，Long qing1; Jun-Zhu，1; Liang，Xiao Chong1

2024-08-01

10.1016/j.vacuum.2024.113241

Vacuum   影响因子和分区

0042-207X

The production of photocatalytic materials with strong light absorption ability and high quantum efficiency by simple means is a long-term goal of photocatalytic technology. In this work, we have synthesized Cu doped ZnO nanoparticles by a facile sol-gel method. By introducing Cu impurities, it is shown that the excitons in ZnO have been efficiently separated into free carriers, leading to optimized photocatalytic performance. The surface amorphous layers of the nanoparticles grew thicker at the introduction of Cu atoms into ZnO lattice, which boosted the photocatalytic ability due to the increase of surface oxygen vacancy concentration. This finding provides a direct evidence of quasi-particle-free carrier conversion in Cu doped ZnO, as well as a guidance for fabricating high efficiency ZnO based nano-photocatalysts.

SCI ; EI

英语

其他

20242216184237

Copper ; Efficiency ; Excitons ; II-VI semiconductors ; Light absorption ; Oxygen ; Oxygen vacancies ; Sol-gel process ; Sol-gels ; Synthesis (chemical)

Copper:544.1 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Products Generally:804 ; Glass:812.3 ; Production Engineering:913.1 ; Crystalline Solids:933.1

MATERIALS SCIENCE

2-s2.0-85194381966

Scopus

1.College of Physics,Sichuan University,Chengdu,610064,China
2.Public Security Department,Sichuan Police College,Luzhou,646000,China
3.School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China
4.Materials Characterization and Preparation Center and Department of Physics,Southern University of Science and Technology,Shenzhen,518056,China
5.Southwest Minzu University,State Ethnic Affairs Commission,Chengdu,610048,China
6.CIMAP,UMR 6252,CNRS-ENSICAEN-CEA-UCBN,Caen,cedex,14050,France

Zhang，Ze Huan,Bai，Hong jie,Bai，Xueyuan,et al. Boosting photocatalytic performance in Cu doped ZnO nanocomposites: Investigation of exciton-free carrier conversion and oxygen vacancy dynamics[J]. Vacuum,2024,226.

Zhang，Ze Huan.,Bai，Hong jie.,Bai，Xueyuan.,Hu，Wen Yu.,Yong-Deng，.,...&Liang，Xiao Chong.(2024).Boosting photocatalytic performance in Cu doped ZnO nanocomposites: Investigation of exciton-free carrier conversion and oxygen vacancy dynamics.Vacuum,226.

Zhang，Ze Huan,et al."Boosting photocatalytic performance in Cu doped ZnO nanocomposites: Investigation of exciton-free carrier conversion and oxygen vacancy dynamics".Vacuum 226(2024).