2D/3D PCN/CN同质结的构建及光催化降解盐酸四环素的性能研究  

Construction of 2D/3D PCN/CN Homojunction and Its Performance in Visible Light Degradation of Tetracycline

作　　者：赵晓旭 刘合权 宋震宇[2] 马潇月 常娜[3] 王海涛[1] 贾彦军 ZHAO Xiao-xu;LIU He-quan;SONG Zhen-yu;MA Xiao-yue;CHANG Na;WANG Hai-tao;JIA Yan-jun(School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China;Tianjin Eco-City Environmental Protection Limited Company,Tianjin 300467,China;School of Chemical Engineering and Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学环境科学与工程学院,天津300387 [2]天津生态城环保有限公司,天津300467 [3]天津工业大学化学工程与技术学院,天津300387

出　　处：《南京晓庄学院学报》2024年第6期30-36,共7页Journal of Nanjing Xiaozhuang University

基　　金：国家重点研发计划项目(2023YFE0101000);山东省重点研发计划项目(2022CXGC020416)。

摘　　要：开发一种高效降解水中有机污染物的光催化剂是当前环境修复研究的热点。通过溶剂热法和表面原位聚合策略,制备了一种非金属二维/三维g-C_(3)N_(4)/g-C_(3)N_(4)同质结光催化剂(2D/3D PCN/CN)。所制备的光催化剂在可见光照射下展现出优异的光降解盐酸四环素(TC-HCI)的性能,相比单一的2D PCN的降解率(55.19%)以及单一的3D CN的降解率(16.6%)有所增强。通过多种表征手段对光催化剂的物化性能进行了详细分析。通过五次循环实验结果表明,2D/3D PCN/CN-3同质结具有高效且稳定的光催化降解性能。通过分析其能带结构和光生电荷载流子的分离与迁移机制,进一步阐明了其光催化机理。本研究为开发高效、稳定的光催化剂提供了新的思路。The development of highly efficient photocatalysts for the degradation of organic pollutants in water is a current research hotspot in environmental remediation.In this study,a non-metallic 2D/3D g-C_(3)N_(4)/g-C_(3)N_(4) homojunction photocatalyst(2D/3D PCN/CN)was synthesized via a solvothermal method and an in-situ surface polymerization strategy.The prepared photocatalyst exhibited excellent photocatalytic degradation performance of tetracycline hydrochloride(TC-HCI)under visible light irradiation,with a significantly enhanced degradation rate compared to individual 2D PCN(55.19%)and 3D CN(16.6%)counterparts.Comprehensive characterization techniques were employed to analyze the physicochemical properties of the photocatalyst in detail.Five-cycle tests demonstrated that the 2D/3D PCN/CN-3 homojunction possessed both efficient and stable photocatalytic degradation capabilities.The photocatalytic mechanism was further elucidated by analyzing the band structure and the separation and migration mechanisms of photogenerated charge carriers.This study provides a new perspective for the development of efficient and stable photocatalysts.

关 键 词：g-C_(3)N_(4) 同质结 光催化 盐酸四环素 机理 

分 类 号：O643.36[理学—物理化学]