负载金纳米粒子壳聚糖水凝胶催化还原染料污染物  

Catalytic reduction of dye pollutants by gold nanoparticles in chitosan hydrogel

作　　者：王琰 邹宇鑫 陈阳 徐南杏 程宇彤 柴志华[1] WANG Yan;ZOU Yuxin;CHEN Yang;XU Nanxing;CHENG Yutong;CHAI Zhihua(School of Chamical Safety,North China Institute of Science and Technology,Yanjiao 065201,China)

机构地区：[1]华北科技学院化工安全学院,北京东燕郊065201

出　　处：《华北科技学院学报》2024年第2期85-89,共5页Journal of North China Institute of Science and Technology

基　　金：河北省自然科学基金项目(B2020508008)。

摘　　要：将金纳米粒子(AuNPs)均匀分散到纳米材料中是提高复合材料催化活性的主要策略之一。本研究原位制备出负载AuNPs的壳聚糖水凝胶。其中,丙烯酸(AA)作为功能单体,N,N-亚甲基双丙烯酰胺(MBA)作为交联剂,过硫酸铵(APS)作为引发剂。使用扫描电子显微镜(SEM)、红外光谱(FTIR)、热重分析(TG),固体紫外对壳聚糖水凝胶的结构和形貌进行了表征。然后通过催化对硝基苯酚(4-NP)和罗丹明B(RhB)的模型实验来验证负载AuNPs水凝胶对水中染料污染物的催化降解能力。结果表明,AuNPs可以有效负载到壳聚糖水凝胶中,对4-NP和RhB具有较高的催化效率。The fabrication of AuNPs into the nanomaterials with uniform dispersion is one of the main strategies to improve the catalytic activity of nanocomposite.This study prepared in situ AuNPs loaded chitosan hydrogel,with acrylic acid(AA)as functional monomer,N,N-methylenebisacrylamide(MBA)as crosslinking agent,and ammonium persulfate(APS)as initiator.The structure and morphology of the hydrogel are characterized by Scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),Thermogravimetry(TG)and solid ultraviolet.Subsequently,4-nitrophenol(4-NP)and rhodamine B(RhB)catalytic reaction is used as a typical model to evaluate catalytic performances of chitosan(CS)-based composite hydrogel catalysts.It is found that AuNPs could be effectively loaded into chitosan hydrogels and had high catalytic efficiency for 4-NP and RhB.

关 键 词：金纳米粒子 壳聚糖 水凝胶 催化 

分 类 号：X96[环境科学与工程—安全科学]