TY - JOUR
T1 - Photocatalytic CO2 conversion of W18O49/CdSe-Diethylenetriamine with high charge transfer efficiency
T2 - Synergistic effect of LSPR effect and S-scheme heterojunction
AU - Huang, Yue
AU - Dai, Kai
AU - Zhang, Jinfeng
AU - Dawson, Graham
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 51572103, 51973078 ), the Distinguished Young Scholar of Anhui Province ( 1808085J14 ), the Major projects of Education Department of Anhui Province ( KJ2020ZD005 ), and the Key Foundation of Educational Commission of Anhui Province ( KJ2019A0595 ).
Publisher Copyright:
© 2022 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences
PY - 2022/1
Y1 - 2022/1
N2 - Non-stoichiometric W18O49 (WO) prepared by solvothermal method has excellent NIR absorption due to the localized surface plasmon resonance effect caused by oxygen vacancies. This has great potential in the field of using sunlight to convert carbon dioxide into organic fuels. In addition, through the amination of CdSe, the one-dimensional/two-dimensional step-scheme (S-scheme) WO/CdSe-diethylenetriamine (WO/CdSe-D) photocatalyst with electron transmission channels driven by visible light to NIR light is constructed by microwave solvothermal method. The LSPR of WO and the synergistic effect of coupling semiconductors to construct S-scheme heterojunctions can improve light utilization and achieve efficient charge carrier transfer efficiency. The optimized photocatalyst of 35%WO/CdSe-D has the best CO2 reduction performance compared to WO and CdSe-D, and the yield is 25.37 µmol h–1 g–1. X-ray photoelectron spectroscopy was used to verify the charge transfer path of the S-scheme WO/CdSe-D heterojunction. This work provides a possibility for the application of non-stoichiometric oxides rich in oxygen vacancies in the field of photocatalytic CO2 reduction.
AB - Non-stoichiometric W18O49 (WO) prepared by solvothermal method has excellent NIR absorption due to the localized surface plasmon resonance effect caused by oxygen vacancies. This has great potential in the field of using sunlight to convert carbon dioxide into organic fuels. In addition, through the amination of CdSe, the one-dimensional/two-dimensional step-scheme (S-scheme) WO/CdSe-diethylenetriamine (WO/CdSe-D) photocatalyst with electron transmission channels driven by visible light to NIR light is constructed by microwave solvothermal method. The LSPR of WO and the synergistic effect of coupling semiconductors to construct S-scheme heterojunctions can improve light utilization and achieve efficient charge carrier transfer efficiency. The optimized photocatalyst of 35%WO/CdSe-D has the best CO2 reduction performance compared to WO and CdSe-D, and the yield is 25.37 µmol h–1 g–1. X-ray photoelectron spectroscopy was used to verify the charge transfer path of the S-scheme WO/CdSe-D heterojunction. This work provides a possibility for the application of non-stoichiometric oxides rich in oxygen vacancies in the field of photocatalytic CO2 reduction.
KW - Diethylenetriamine
KW - Localized surface plasmon resonance
KW - Photocatalytic CO reduction
KW - S-Scheme
KW - WO
UR - http://www.scopus.com/inward/record.url?scp=85139340138&partnerID=8YFLogxK
U2 - 10.1016/S1872-2067(21)64024-X
DO - 10.1016/S1872-2067(21)64024-X
M3 - Article
AN - SCOPUS:85139340138
SN - 1872-2067
VL - 43
SP - 2539
EP - 2547
JO - Chinese Journal of Catalysis
JF - Chinese Journal of Catalysis
IS - 10
ER -