Journal
ACS ENERGY LETTERS
Volume 4, Issue 6, Pages 1387-1393Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.9b00711
Keywords
-
Categories
Funding
- World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitectonics (MANA), MEXT (Japan)
- National Natural Science Foundation of China [201633004, 21703065]
- JSPS KAKENHI [JP18H02065]
- Natural Science Foundation of Hebei Province [B2018209267]
- Natural Science Foundation of Jiangsu Province [BK20180438]
- Photoexcitonix Project in Hokkaido University
Ask authors/readers for more resources
Vacancies have been demonstrated to be significant for CO2 reduction reaction (CO2RR) over ZnS, but anion vacancies were easily refilled with oxygen species and could work as both H-2 and CO evolution sites, aggravating the competition between hydrogen evolution reaction (HER) and CO2RR. In this study, cation vacancies (V-Zn) were proposed as new active sites on the ZnS surfaCe. With no cocatalyst, the V-Zn-rich ZnS acquired a high selectivity of formate production (>85%) in inorganic aqueous solution. In situ attenuated total reflection-infrared (ATR-IR) spectroscopy and first-principle calculations have clarified the CO2RR pathways into formate and proved that the surface V-Zn could greatly lower the barrier of CO2RR and suppress the proton adsorption, elucidating the origin of the highly selective CO2RR in the presence of competitive HER. This work gives an in-depth understanding of the cation vacancies and inspiration to develop efficient photocatalysts.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available