Exceptional Photocatalytic Activities of rGO Modified (B,N) Co-Doped WO3, Coupled with CdSe QDs for One Photon Z-Scheme System: A Joint Experimental and DFT Study

Raziq, Fazal1,2; Aligayev, Amil2; Shen, Huahai3; Ali, Sharafat1,2; Shah, Rahim2; Ali, Sajjad4; Bakhtiar, Syedul H.5; Ali, Asad6; Zarshad, Naghat6; Zada, Amir6; Xia, Xiang2; Zu, Xiaotao2; Khan, Muslim7; Wu, Xiaoqiang8; Kong, Qingquan8; Liu, Chunming2; Qiao, Liang1,2

2021-12-01

10.1002/advs.202102530

ADVANCED SCIENCE   影响因子和分区

2198-3844

Artificial Z-scheme, a tandem structure with two-step excitation process, has gained significant attention in energy production and environmental remediation. By effectively connecting and matching the band-gaps of two different photosystems, it is significant to utilize more photons for excellent photoactivity. Herein, a novel one-photon (same energy-two-photon) Z-scheme system is constructed between rGO modified boron-nitrogen co-doped-WO3, and coupled CdSe quantum dots-(QDs). The coctalyst-0.5%RhxCr2O3(0.5RCr) modified amount-optimized sample 6%CdSe/1%rGO3%BN-WO3 revealed an unprecedented visible-light driven overall-water-splitting to produce approximate to 51 mu mol h(-1) g(-1) H-2 and 25.5 mu mol h(-1) g(-1) O-2, and it remained unchanged for 5 runs in 30 h. This superior performance is ascribed to the one-photon Z-scheme, which simultaneously stimulates a two photocatalysts system, and enhanced charge separation as revealed by various spectroscopy techniques. The density-functional theory is further utilized to understand the origin of this performance enhancement. This work provides a feasible strategy for constructing an efficient one-photon Z-scheme for practical applications.

CdSe quantum dots expending visible-light response one-photon Z-scheme overall-water splitting surface modifications WO3

SCI ; EI

英语

其他

National Natural Science Foundation of China[11774044,52072059] ; Specialized Research Fund for the Doctoral Program of Higher Education[20133514110003] ; China Postdoctoral Science Foundation["2017M622404","2018M640906+"]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000725455300001

WILEY

20214911273481

Cadmium compounds ; Chromium compounds ; Density functional theory ; Energy gap ; II-VI semiconductors ; Light ; Nanocrystals ; Photocatalytic activity ; Photons ; Rhodium compounds ; Selenium compounds ; Semiconductor quantum dots

Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1

Web of Science

1.Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Huzhou, Huzhou 313001, Peoples R China
2.Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China
3.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
5.Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
6.Abdul Wali Khan Univ Mardan, Dept Chem, Kpk 23200, Pakistan
7.Kohat Univ Sci & Technol, Dept Chem, Kohat 26000, Kpk, Pakistan
8.Chengdu Univ, Sch Mech Engn, Chengdu 610106, Peoples R China

Raziq, Fazal,Aligayev, Amil,Shen, Huahai,et al. Exceptional Photocatalytic Activities of rGO Modified (B,N) Co-Doped WO3, Coupled with CdSe QDs for One Photon Z-Scheme System: A Joint Experimental and DFT Study[J]. ADVANCED SCIENCE,2021,9.

Raziq, Fazal.,Aligayev, Amil.,Shen, Huahai.,Ali, Sharafat.,Shah, Rahim.,...&Qiao, Liang.(2021).Exceptional Photocatalytic Activities of rGO Modified (B,N) Co-Doped WO3, Coupled with CdSe QDs for One Photon Z-Scheme System: A Joint Experimental and DFT Study.ADVANCED SCIENCE,9.

Raziq, Fazal,et al."Exceptional Photocatalytic Activities of rGO Modified (B,N) Co-Doped WO3, Coupled with CdSe QDs for One Photon Z-Scheme System: A Joint Experimental and DFT Study".ADVANCED SCIENCE 9(2021).