Journal
CHEMICAL PHYSICS LETTERS
Volume 751, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2020.137467
Keywords
g-C3N4; Optoelectronic properties; Alkali metal doped; First principle; Reduction CO2
Funding
- Jiangsu Provincial Key Research and Development Program [BE2016721]
- Jiangsu Province TCM Project [YB2015184]
- China Postdoctoral Science Foundation Funded Project [2019M651729]
- Natural Science Foundation of Jiangsu Province [BK20190862]
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Alkali metal (Li, Na, K and Rb) doped g-C3N4 were prepared by water bath heating and high temperature calcination method. Photoelectric properties were studied by first-principles calculations and experiments. Computational results show that absorption spectra of Rb doped g-C3N4 increases significantly in the wavelength range of 500-1100 nm, which is consistent with the UV-vis spectrum. Rb doped g-C3N4 showed the best photoreduction CO2 performance, with a CO productivity more than three times higher compared with bulk g-C3N4. This work provides a guiding significance for construction of doped g-C3N4 materials applied in fields of environmental remediation, energy conversion and medical imaging.
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