高结晶度g-C_(3)N_(4)在光催化领域的研究进展  

Research Progress of High Crystallinity g-C_(3)N_(4) in Photocatalysis

作　　者：徐杨 刘成宝[1,2,3] 郑磊之 陈丰[1,2,3] 钱君超[1,2,3] 邱永斌 孟宪荣[5] 陈志刚[1,2,3] XU Yang;LIU Chengbao;ZHENG Leizhi;CHEN Feng;QIAN Junchao;QIU Yongbin;MENG Xianrong;CHEN Zhigang(Jiangsu Key Laboratory for Environment Functional Materials,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China;School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China;Jiangsu Collaborative Innovation Center of Technology and Material for Water Treatment,Suzhou University of Science and Technology,Suzhou 215009,Jiangsu,China;Jiangsu Province Ceramics Research Institute Co.,Ltd.,Yixing 214221,Jiangsu,China;Suzhou Institute of Environmental Science,Suzhou 215007,Jiangsu,China)

机构地区：[1]苏州科技大学江苏省环境功能材料重点实验室,江苏苏州215009 [2]苏州科技大学材料科学与工程学院,江苏苏州215009 [3]苏州科技大学江苏水处理技术与材料协同创新中心,江苏苏州215009 [4]江苏省陶瓷研究所有限公司,江苏宜兴214221 [5]苏州市环境科学研究所,江苏苏州215007

出　　处：《材料导报》2024年第21期75-87,共13页Materials Reports

基　　金：江苏省自然科学基金(BK20180103;BK20180971);苏州市科技发展计划项目(SS202036)。

摘　　要：石墨相氮化碳(g-C_(3)N_(4))作为具有典型二维层状结构和窄带隙的聚合物半导体,表现出优异的可见光吸收能力、稳定的物理化学性能和优良的光催化活性。然而,传统含氮前驱体热诱导聚合产生的g-C_(3)N_(4)结构不完全,主体是非晶或半晶质结构的melon基氮化碳,其体相和表面存在较多缺陷,导致电导率低、限制光激发电荷的分离以及电子-空穴对重组率较高,大幅降低了其催化活性,因此提高g-C_(3)N_(4)的结晶度是非常有必要的。本文主要总结了高结晶度氮化碳(CCN)的优势和近年来的研究进展,提高g-C_(3)N_(4)的结晶度不仅能在共轭平面之间建立电荷转移通道,从而提高层内电荷转移效率,而且可以与其他改性手段糅合以实现高效的协同效应。同时,通过介绍CCN的结构、表征、制备方法、改性策略和应用领域对CCN近年来的研究进展进行总结。最后,简要总结了CCN光催化材料面临的挑战和本领域未来的发展方向。G raphite phase carbon nitride(g-C_(3)N_(4)),a polymer semiconductor with a typical two-dimensional layered structure and narrow band gap,has excellent visible light absorption capacity,stable physical and chemical properties and good photocatalytic properties.However,the structure of g-C_(3)N_(4)produced by the heat-induced polymerization from traditional nitrogen-containing precursor is incomplete.The main body is melon-based carbon nitride with amorphous or semi-crystalline structure.There are many defects in its phase and surface,which lead to lower conductivity,higher electron-hole pairs recombination rate,resulting in lower catalytic activity.Therefore,it is necessary to improve the crystallinity of g-C_(3)N_(4).This paper mainly summarizes the advantages of high crystalline carbon nitride(CCN)and the research progress in recent years.Increasing the crystallinity of g-C_(3)N_(4)can provide charge transfer channels between the conjugated planes to improve the charge transfer efficiency,and also introduce other modification methods to achieve efficient synergies.Then,the structure,characterization,preparation,modification strategy and application fields of CCN in recent years were reviewed.Finally,the challenges and future development directions of CCN photocatalysts are summarized briefly.

关 键 词：半导体光催化技术 石墨相氮化碳 高结晶度 

分 类 号：TB34[一般工业技术—材料科学与工程]