g-C_(3)N_(4)/Ag_(3)PO_(4)复合Z型光催化剂的制备及对磺胺噻唑的光催化降解  

Preparation of g-C_(3)N_(4)/Ag_(3)PO_(4)composite Z-type photocatalyst and photocatalytic degradation of sulfathiazole

作　　者：杨嘉伟 王阳阳 孙磊 樊超生 杨柳[1] YANG Jiawei;WANG Yangyang;SUN Lei;FAN Chaosheng;YANG Liu(College of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou Gansu 730030,China)

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730030

出　　处：《石油化工应用》2024年第11期109-113,共5页Petrochemical Industry Application

摘　　要：该研究采用简单的原位沉积法制备了g-C_(3)N_(4)/Ag_(3)PO_(4)复合Z-异质结光催化剂,并将其用于磺胺噻唑(STZ)的降解。当g-C_(3)N_(4)与Ag_(3)PO_(4)的理论质量比为1∶5(记为AG-5)时,STZ的降解效果最好,10 min内降解率可达95.6%。此外,活性物种的捕获表明,光生空穴(h+)在反应中起主要作用。最后,用紫外-可见漫反射光谱对催化剂的光学性质和能带结构进行了分析,提出了Z型异质结电荷转移机理。In this study,a g-C_(3)N_(4)/Ag_(3)PO_(4)composite Z-heterojunction photocatalyst was prepared with a simple in situ deposition method,and was applied to the degradation of sulfathiazole(STZ).When the theoretical g-C_(3)N_(4)to Ag_(3)PO_(4)mass ratio was 1∶5(denoted as AG-5),the STZ degradation was optimal,and the degradation efficiency reached 95.6%within 10 min.In addition,capture of the active species showed that photogenerated holes(h+)played a major role in the reaction.Finally,the optical properties and the energy band structure of the catalyst were analyzed by UV-VIS diffuse reflectance spectroscopy(DRS),and a Z-type heterojunction charge transfer mechanism was proposed.

关 键 词：g-C_(3)N_(4)/Ag_(3)PO_(4) Z型异质结 光催化降解 机理研究 磺胺噻唑 

分 类 号：O643.36[理学—物理化学]