Highly Efficient and Exceptionally Durable CO 2 Photoreduction to Methanol over Freestanding Defective Single-Unit-Cell Bismuth Vanadate Layers
University of Science and Technology of China · Collaborative Innovation Center of Chemistry for Energy Materials
Abstract
Unearthing an ideal model for disclosing the role of defect sites in solar CO2 reduction remains a great challenge. Here, freestanding gram-scale single-unit-cell o-BiVO4 layers are successfully synthesized for the first time. Positron annihilation spectrometry and X-ray fluorescence unveil their distinct vanadium vacancy concentrations. Density functional calculations reveal that the introduction of vanadium vacancies brings a new defect level and higher hole concentration near Fermi level, resulting in increased photoabsorption and superior electronic conductivity. The higher surface photovoltage intensity of single-unit-cell o-BiVO4 layers with rich vanadium vacancies ensures their higher carriers…
Citation impact
- FWCI
- 17.35
- Percentile
- 100%
- References
- 36
Authors
11- SGShan GaoCorresponding
University of Science and Technology of China, Collaborative Innovation Center of Chemistry for Energy Materials
- BGBingchuan Gu
University of Science and Technology of China, Collaborative Innovation Center of Chemistry for Energy Materials
- XJXingchen Jiao
University of Science and Technology of China, Collaborative Innovation Center of Chemistry for Energy Materials
- YSYongfu Sun
University of Science and Technology of China, Collaborative Innovation Center of Chemistry for Energy Materials
- XZXiaolong Zu
University of Science and Technology of China, Collaborative Innovation Center of Chemistry for Energy Materials
Topics & keywords
- Vanadium
- Chemistry
- Bismuth vanadate
- Vacancy defect
- Bismuth
- Vanadate
- Fermi level
- Solar cell
Funding
- NNNational Natural Science Foundation of ChinaAwards: 91127042, U1632147, 21331005, 21173205, 21201157, 91422303, 11321503, 21422107
- MOMinistry of Education of the People's Republic of ChinaAward: WK2340000063
- CAChinese Academy of SciencesAwards: 2016HSC-IU002, CX2340000100, XDB01020000, QYZDYSSW-SLH011
- CPChina Postdoctoral Science FoundationAward: 2016M602017
- PFProgram for New Century Excellent Talents in UniversityAward: NCET-13-0546
- NPNational Postdoctoral Program for Innovative TalentsAward: BX201600143