Amorphous titanium carbide on N-defective g-C_(3)N_(5) for high-efficiency photocatalytic NO removal  

作　　者：Ke Zhang Yajing Wei Linhua Xie Sha Kang Fei Li Chuanyi Wang 

机构地区：[1]School of Environmental Science and Engineering,Shaanxi University of Science and Technology,Xi’an 710021,China [2]Guangzhou Institute of Industrial Intelligence(GI3),Guangzhou 511458,China

出　　处：《Chinese Chemical Letters》2025年第3期194-198,共5页中国化学快报(英文版)

基　　金：the support from the Scientific Research Program Funded by Education Department of Shaanxi Provincial Government(No.23JP011);Guangzhou Fundamental Research Program(No.2023A04J0697);the scientific research startup fund of Shaanxi University of Science and Technology。

摘　　要：Photocatalytic NO removal is regarded as an attractive strategy to reduce NO pollution in the air,but the lack of efficient and stable catalysts impedes its applications.Herein,we report on developing Ti_(3)C_(2)supported on N-defective g-C_(3)N_(5)nanosheets(CN_(X)/TC)as an efficient photocatalyst toward NO removal.It is noteworthy that TC changed from crystal structure to amorphous structure during the photocatalytic process.Due to the existence of N vacancies and amorphous structure,the designed CN_(X)/TC composites possess abundant unsaturated sites for adsorption and activation of O_(2)and NO,thus facilitating the removal of NO and inhibiting the generation of NO_(2).The as-prepared CN_(X)/TC-2%shows the best activity for NO removal and inhibits toxic NO_(2)generation.The removal rate of NO is up to 48%,which is about 2 and 4 times higher than those of pure CN_(X)and CN,respectively.In addition,the in situ diffused reflection Fourier transform infrared spectroscopy was used to investigate the NO transfer pathway during the photocatalytic process.This work might provide new insights into the catalytic role of N-defect and amorphous,inspiring the rational design of catalysts in the field of photocatalytic NO removal.

关 键 词：PHOTOCATALYSIS NO removal G-C_(3)N_(5) Ti_(3)C_(2) AMORPHOUS 

分 类 号：O643.3[理学—物理化学]