多杂原子掺杂碳材料阴极催化降解罗丹明B  

Catalytic Degradation of Rhodamine B by Heteroatom Doped Carbon Material

作　　者：肖松[1] 朱凯 刘诗杰 阳瑜莹 屈钧娥[1] 王海人[3] 

机构地区：[1]湖北大学材料科学与工程学院,湖北武汉 [2]湖北第二师范学院,化学与生命科学学院,湖北武汉 [3]湖北大学绿色有机功能材料重点实验室,湖北武汉

出　　处：《化学工程与技术》2018年第1期27-36,共10页Hans Journal of Chemical Engineering and Technology

摘　　要：以生物质材料羊毛毡为前驱体,通过热解的方法一步制备了杂原子(N,O、S和P)掺杂碳材料,并用SEM、EDS和FTIR对其进行表征。同时,用该材料作为电Fenton阴极催化降解罗丹明B废水,并对影响电Fenton过程的重要因素如:溶液的初始pH值和Fe2+的浓度进行了优化。实验结果表明,该材料有很高的催化活性,在溶液的初始pH为3,Fe2+的浓度为0.5 mmol?L?1时,用该催化剂作为电Fenton阴极降解50 mg?L?1的罗丹明B溶液,降解时间为120分钟,罗丹明B的去除率可达到99.5%。由于该催化剂制备方法简单,成本低,催化活性高,稳定性好,在处理有机废水方面有很好的应用前景。The heteroatoms (N, O, S and P) doped carbon material were prepared by a facile strategy through pyrolytic treatment of wool felt, and their properties were characterized by SEM, EDS and FTIR. Meanwhile, the material was used as electro-Fenton cathode for rhodamine B degradation. The effect of significant parameters including the initial pH and Fe2+ dosage on the removal efficiency was investigated for electro-Fenton process. It was indicated that initial Fe2+ concentration of 0.5 mmol?L?1 at pH 3 were the optimum conditions for the removal of 50 mg?L?1 RhB solution. The degradation time was 120 min, and the removal rate of rhodamine B was 99.5%. Because the catalyst has the advantages of simple preparation method, low cost, high catalytic activity and good stability, the catalyst has a good application prospect in the treatment of organic waste water.

关 键 词：杂原子掺杂碳 罗丹明B 电FENTON 氧还原反应 羟基自由基 

分 类 号：X7[环境科学与工程—环境工程]