Synthesis of crystalline carbon nitride with enhanced photocatalytic NO removal performance:An experimental and DFT theoretical study  

作　　者：Zhanyong Gu Zhitao Cui Zijing Wang Tingru Chen Peng Sun Dawei Wen 

机构地区：[1]Institute of Multidisciplinary Research for Advanced Materials,Tohoku University,Sendai,9808578,Japan [2]School of Materials Science and Engineering,Anhui University of Technology,Maanshan,243002,China [3]School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing,100083,China [4]School of Applied Physics and Materials,Wuyi University,Jiangmen,529020,China

出　　处：《Journal of Materials Science & Technology》2021年第24期113-122,共10页材料科学技术（英文版）

基　　金：supported by the JSPS Grant-in-Aid for Scientific Research on Innovative Areas“Mixed anion”(No.16H06439);Nippon Sheet Glass Foundation for Materials Science and Engineering and by the Dynamic Alliance for Open Innovations Bridging Human,Environment and Materials,the Cooperative Research Program of“Network Joint Research Center for Materials and Devices”。

摘　　要：The pristine carbon nitride derived from the thermally-induced polymerization of nitrogen-containing precursors(e.g.cyanamide,dicyanamide,melamine and urea)displays low crystallinity because of the predominantly kinetic hindrance.Herein,we reported a modified molten-salts method to fabricate the crystalline carbon nitride under ambient pressure,which is expected to the large-scale production of crystalline carbon nitride.The obtained crystalline carbon nitride displayed about 3.0 times higher photocatalytic NO removal performance than that of pristine carbon nitride under visible light irradiation(λ<400 nm).Detailed experimental characterization and theoretical calculation revealed the crucial roles of crystallinity in crystalline carbon nitride for the enhanced photocatalytic NO removal performance.This research provided deep insights into the crystallinity of carbon nitride for the enhanced photocatalytic performance.

关 键 词：Carbon nitride CRYSTALLINITY Molten-salts method Photocatalytic NO removal DFT 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]