硫掺杂石墨烯电催化降解有机染料甲基橙  

Electrocatalytic degradation of organic dye methyl orange by sulfur-doped graphene

作　　者：陈思 胡腾飞 于永波 王冰鑫 洪俊明[1,2] 张倩 CHEN Si;HU Tengfei;YU Yongbo;WANG Bingxin;HONG Junming;ZHANG Qian(College of Chemical Engineering,Huaqiao University,Xiamen 361021,Fujian,China;Fujian Province Engineering Research Center of Industrial Wastewater Biochemical Treatment,Xiamen 361021,Fujian,China)

机构地区：[1]华侨大学化工学院,福建厦门361021 [2]福建省工业废水生化处理工程技术研究中心,福建厦门361021

出　　处：《化工进展》2021年第1期550-558,共9页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(51978291);厦门市科技计划(3502Z20173050,3502Z20173052,3502Z20183023);华侨大学研究生科研创新基金(19014087002)。

摘　　要：电极作为影响污染物电催化氧化效率与路径的最主要因素,是电催化效率提升的重要突破口。本研究以氧化石墨烯(GO)为碳源,以二苯二硫醚作为硫源,合成硫掺杂石墨烯(SGN)电极,用于电催化降解甲基橙染料。利用扫描电子显微镜、透射电子显微镜、红外光谱、拉曼光谱、X射线光电子能谱等对材料进行表征。考察电解质、外加电流、初始pH等因素对降解过程的影响。研究结果表明,硫掺杂能有效提升石墨烯材料的电催化性能。在初始pH=3、甲基橙浓度为10mg/L、电解质为NaCl、外加电流为30mA且实验温度为20℃的最佳条件下,反应35min可以达到98.39%的甲基橙降解率。材料性能稳定,可重复使用,在降解有机污染物方面具有良好的应用前景。Anode material is critical factor for electro-catalytic efficiency breakthroughs.In this research,the sulfur-doped graphene materials were prepared by carbon precursor of graphene oxide(GO)and sulfur precursor of diphenyl disulfide to degrade organic orange methyl orange.The materials were characterized by scanning electron microscopy(SEM),transmission electron microscopy(TEM),Fourier transform infrared(FTIR),Raman spectroscopy and X-ray photoelectron spectroscopy(XPS).The influence of electrolyte,applied current,initial pH and other factors on the degradation process was investigated.The results indicated that the sulfur doping can improve the catalytic performance of graphene materials.Under the optimal conditions of initial pH=3,methyl orange concentration of 10mg/L,electrolyte of NaCl,applied current of 30mA and experimental temperature of 20℃,98.39%of methyl orange can be achieved in 35min.In addition,the stable and reusable properties of the material showed the prospect for practical applications.

关 键 词：电催化氧化 硫掺杂石墨烯 降解 偶氮染料 自由基 催化剂 

分 类 号：O6[理学—化学]