期刊
DALTON TRANSACTIONS
卷 49, 期 44, 页码 15750-15757出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt03229h
关键词
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资金
- National Key R&D program of China [2017YFE0127400]
- National Natural Science Foundation of China [51872317, 21835007]
- Science and Technology Commission of Shanghai [20520711900]
Developing highly efficient photocatalysts is of crucial importance to solve the energy crisis and global warming issues. In this work, a P-doped polymeric carbon nitride (CN) photocatalyst was synthesized by one-step copolymerization of guanidine hydrochloride and phosphonitrilic chloride trimer. The doping of P in CN was found to alter the electronic structure, enhance the charge separation and transfer, and promote the CO2 adsorption and activation, making it an efficient CO2 photoreduction catalyst. At the optimized P dose, the CO evolution amount on P-doped CN reached 0.349 mu mol (30 mg, 3 h), which was 3.5 times that of pure CN. The process of CO2 photoreduction on P-doped CN was investigated by in situ FTIR analysis, revealing that P doping could promote the formation of a CO2- intermediate. A possible mechanism has been proposed, which may provide new insights into the effect of non-metal element doping in CN on its CO2 photocatalytic reduction performance.
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