文章摘要
Cu掺杂MIL-88B-Fe活化双氧水降解有机污染物性能研究
Activation of H2O2 by Cu doped MIL-88B-Fe for organic pollutants degradation
投稿时间:2018-06-21  修订日期:2018-07-18
DOI:
中文关键词: 非均相类芬顿  Cu掺杂  MIL-88B-Fe  电子传递  有机污染物
英文关键词: heterogeneous Fenton-like reaction  doping Cu  MIL-88B-Fe  electron transfer  organic pollutants
基金项目:国家自然科学基金重大项目(21590813)
作者单位E-mail
高聪 大连理工大学环境学院 gaocong@mail.dlut.edu.cn 
全夑 大连理工大学环境学院 quanxie@dlut.edu.cn 
陈硕 大连理工大学环境学院  
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中文摘要:
      非均相类芬顿技术是一种去除水中难降解有机污染物的有效方法,但受限于Fe(III)/Fe(II)转换速率较慢,导致非均相类芬顿催化剂活性普遍偏低。本研究通过溶剂热法制备了高活性Cu掺杂MIL-88B-Fe非均相类芬顿催化剂。以苯酚作为目标污染物,研究了Cu掺杂量对MIL-88B-Fe催化性能的影响。结果表明,掺杂Cu可以提高MIL-88B-Fe的催化活性,当Fe/Cu掺杂比例为0.6:0.4 (MIL-88B-Fe0.6Cu0.4)时催化活性最高,其降解苯酚动力学常数是未掺杂MIL-88B-Fe的1.6倍,并且比一些常见的非均相类芬顿催化剂(Fe2O3,α-FeOOH及FeBiO3)高三个数量级。X 射线光电子能谱(XPS)及电化学表征结果表明Cu的掺杂可以加快催化剂中电子传递,促进催化剂中Fe(III)向Fe(II)的转换,从而提高MIL-88B-Fe催化效率。
英文摘要:
      Heterogeneous Fenton-like reaction is an effective method for degrading non-biodegradable organic pollutants. However, the catalytic performance of the heterogeneous Fenton-like catalysts are limited duo to the low reduction rate of Fe(III) to Fe(II). Here, a highly effective heterogeneous Fenton-like catalyst Cu doped MIL-88B-Fe was prepared. It was found that doping Cu into MIL-88B-Fe can enhance the catalytic performance of MIL-88B-Fe. Among the doping catalysts, MIL-88B-Fe0.6Cu0.4 exhibited the highest catalytic activity, which was 1.6 times more than that of MIL-88B-Fe and was 3 orders of magnetite higher than those of other catalysts (Fe2O3, α-FeOOH and FeBiO3). The XPS and electrochemical characterization results showed that doping Cu could enhance the electron transfer in catalyst, thus facilitating the redox cycle of Fe(III)/Fe(II). As a result, the catalytic performance was improved. This work provided a new insight into developing highly effective Fenton-like catalysts for organic pollutants degradation.
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