Rational design of dual sites induced local electron rearrangement for enhanced photocatalytic oxygen activation  

作　　者：Ruru Li Qian Liu Hui Li Fengbin Sun Zhurui Shen 

机构地区：[1]School of Materials Science and Engineering,Nankai University,Tianjin 300350,China [2]Weather Modification Centre,China Meteorological Administration,Beijing 100081,China

出　　处：《Chinese Chemical Letters》2024年第11期232-237,共6页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21872102 and 22172080);the Fundamental Research Funds for the Central Universities,Nankai University(No.63231195);Tianjin“Project+Team”Innovation Team,2020。

摘　　要：Efficient activation of molecular oxygen(O_(2))is considered a promising technique for the removal of antibiotics.However,how to effectively regulate electrons distribution to promote O_(2)activation remains a challenge at present.In this study,phosphorus and sodium co-doped carbon nitride(PNaCN)were designed to rearrange the electrons distribution to activate O_(2)for the degradation of tetracycline.The generation of·O_(2)~-was innovatively observed via in-situ O_(2)fitting Fourier transform infrared(FTIR)spectroscopy,demonstrating the outstanding O_(2)activation ability of PNa5.Density functional theory(DFT)further confirmed that the rational co-doping led to the rearrangement of local electrons,resulting in electron-rich Na sites and electron-deficient P sites.These sites exhibited greater susceptibility to O_(2)adsorption and charge transfer.Besides,the degradation rate of tetracycline was increased by 2.44 times using co-doped CN.This study provides a new inspiration for enhancing O_(2)activation by inducing electrons rearrangement.

关 键 词：Electrons rearrangement CO-DOPING O_(2)activation PHOTOCATALYSIS Tetracycline degradation 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X703[环境科学与工程—环境工程]