Mo-Fe基非晶合金丝材对偶氮染料的降解性能  

Research on the Degradation Performance of Azo Dyes for MoFe-based Amorphous Alloy Wires

作　　者：贺旺 陈亚楠[1] 唐梅芳 高文郡 苏辰 郭胜锋[1] HE Wang;CHEN Yanan;TANG Meifang;GAO Wenjun;SU Chen;GUO Shengfeng(School of Materials and Energy,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学材料与能源学院,重庆400715

出　　处：《材料研究学报》2024年第11期837-848,共12页Chinese Journal of Materials Research

基　　金：国家自然科学基金(52071276);中央高校基本科研业务费专项基金(SWU-XDJH202313)。

摘　　要：用熔融纺丝法制备Mo-Fe基(Mo_(51)Co_(17)Fe_(17)B_(15)和Mo_(51)Fe_(34)B_(15))非晶合金丝材,研究了这两种非晶丝材对结晶紫溶液的降解性能及其机理。结果表明,Mo_(51)Co_(17)Fe_(17)B_(15)和Mo_(51)Fe_(34)B_(15)非晶合金丝材能彻底降解p H值为2~9的结晶紫溶液。Mo_(51)Fe_(34)B_(15)的降解效率比Mo_(51)Co_(17)Fe_(17)B_(15)的高,为了达到相同的降解效率前者所需时间为后者的二分之一。与Mo_(51)Co_(17)Fe_(17)B_(15)丝材相比,Mo_(51)Fe_(34)B_(15)非晶合金丝材的自腐蚀电位较高、腐蚀电流密度较低。这两种丝材优异的耐腐蚀性能和表面较高的Fe^(2+)含量,有利于为催化降解提供大量的电子转移基础,适宜的耐腐蚀性能和较高的电子转移性能是其具有优异降解性能的关键原因。Mo-based amorphous alloys show excellent degradation performance and thermal stabili-ty in the field of dye wastewater degradation,and have efficient catalytic reactivity over a wide pH range.This paper successfully prepared novel MoFe-based(Mo_(51)Co_(17)Fe_(17)B_(15) and Mo_(51)Fe_(34)B_(15))amor-phous alloy wires using the melt-spinning method.This further enhanced the catalytic activity of Mo-based amorphous alloys in extremely acidic media,and investigated the degradation performance of the two amorphous wire materials towards crystal violet solution and its reaction mechanism.The results show that Mo_(51)Co_(17)Fe_(17)B_(15) and Mo_(51)Fe_(34)B_(15) amorphous alloy wires can completely degrade crystal violet solution with pH 2~9.The degradation efficiency of Mo_(51)Fe_(34)B_(15) is higher than that of Mo_(51)Co_(17)Fe_(17)B_(15),and the time required for the former to reach the same degradation degree is only 1/2 of the latter.In ad-dition,the Mo_(51)Fe_(34)B_(15) amorphous alloy wires have a higher self-corrosion potential and lower corrosion current density,superior corrosion resistance and a higher surface Fe^(2+)content,which is conducive to providing a large number of electron transfer basis for the catalytic degradation process.The suitable corrosion behavior and faster electron transfer ability are the key reasons for its superior degradation performance.

关 键 词：金属材料 钼基非晶合金 非晶丝材 染料废水 催化降解 

分 类 号：TQ426.83[化学工程]