Abstract
Efficient activation of molecular oxygen(O2)is considered a promising technique for the removal of an-tibiotics.However,how to effectively regulate electrons distribution to promote O2 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 O2 for the degradation of tetracycline.The generation of·O2-was innovatively observed via in-situ O2 fitting Fourier transform infrared(FTIR)spec-troscopy,demonstrating the outstanding O2 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 O2 ad-sorption 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 O2 activation by inducing elec-trons rearrangement.
维普
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