MIL-101光催化剂对Cr(Ⅵ)-RhB复合污染的定向分离及其高效光催化协同处理

doi:10.16085/j.issn.1000-6613.2017-2002

化工进展 ›› 2018, Vol. 37 ›› Issue (07): 2860-2866.DOI: 10.16085/j.issn.1000-6613.2017-2002

MIL-101光催化剂对Cr(Ⅵ)-RhB复合污染的定向分离及其高效光催化协同处理

崔陪陪¹, 胡芸^1,2,3, 黄倩倩¹, 付名利^1,2,3

1 华南理工大学环境与能源学院, 广东广州 510006;
2 广东省大气环境与污染控制重点实验室, 广东广州 510006;
3 广东省环境风险防控与应急处置工程技术研究中心, 广东广州 510006

收稿日期:2017-09-24 修回日期:2017-11-08 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 胡芸,教授,博士生导师,研究方向为环境功能材料。
作者简介:崔陪陪(1992-),女,硕士研究生,研究方向为环境功能材料。
基金资助:
国家自然科学基金（21577039，21777047，51578245）、广东省科技计划（2015A020215004）及广州市科技计划（201804020026）项目。

Directional separation and synergetic treatment of Cr(Ⅵ)-RhB on MIL-101 photocatalyst

CUI Peipei¹, HU Yun^1,2,3, HUANG Qianqian¹, FU Mingli^1,2,3

1 School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China;
2 Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, Guangdong, China;
3 Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, Guangzhou 510006, Guangdong, China

Received:2017-09-24 Revised:2017-11-08 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 以九水硝酸铬、对苯二甲酸、氢氟酸为前体，采用水热法制备了MIL-101光催化剂。运用X射线衍射（XRD）、紫外-可见光吸收光谱（UV-vis）、傅里叶红外光谱（FTIR）、BET比表面积分析仪、扫描电镜（SEM）及透射电镜（TEM）等方法表征材料的形貌结构。考察了MIL-101（Cr）光催化剂对Cr（Ⅵ）-RhB水体复合污染的定向分离以及光催化处理性能，并对其协同处理机制进行了探讨。结果表明：相较于单一Cr（Ⅵ）和RhB污染，该光催化剂在紫外光下表现出对Cr（Ⅵ）-RhB水体复合污染更高的处理效率。而且由于MIL-101的本身结构的特性，使得分子直径不同的两种目标污染物Cr（Ⅵ）和RhB能够自主定向分离，并且同步发生氧化还原反应。

关键词: MIL-101, Cr (Ⅵ)-RhB复合污染, 光催化, 定向分离, 协同处理

Abstract: The MIL-101 photocatalysts were prepared by solvothermal synthesis method using chromic nitrate nonahydrate, terephthalic acid and hydrofluoric acid as precursors. The structures of the samples were characterized by X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-vis), fourier transform-infrared (FTIR), Brunauer-Emmett-Teller (BET), scanning electron microscope (SEM) and transmission electron microscope (TEM) measurements. The orientationasl separation and photocatalytic reaction of Cr(Ⅵ) and RhB in Cr(Ⅵ)-RhB combined pollution on MIL-101(Cr) were investigated. Furthermore, the synergetic treatment mechanism for the combined pollution was discussed. The results demonstrated that this photocatalyst exhibited higher treatment efficiency for Cr(Ⅵ)-RhB combined pollution than for single Cr(Ⅵ) or RhB under ultraviolet light irradiation. Meanwhile, because of the structure of MIL-101, the target pollutants of Cr(Ⅵ) and RhB with different molecular diameters can be directionally separated, and the oxidation of RhB was synchronized with the reduction of Cr(Ⅵ).

Key words: MIL-101, Cr (Ⅵ)-RhB, photocatalysts, directional separation, synergetic treatment

中图分类号:

X703

崔陪陪, 胡芸, 黄倩倩, 付名利. MIL-101光催化剂对Cr(Ⅵ)-RhB复合污染的定向分离及其高效光催化协同处理[J]. 化工进展, 2018, 37(07): 2860-2866.

CUI Peipei, HU Yun, HUANG Qianqian, FU Mingli. Directional separation and synergetic treatment of Cr(Ⅵ)-RhB on MIL-101 photocatalyst[J]. Chemical Industry and Engineering Progress, 2018, 37(07): 2860-2866.

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MIL-101光催化剂对Cr(Ⅵ)-RhB复合污染的定向分离及其高效光催化协同处理

Directional separation and synergetic treatment of Cr(Ⅵ)-RhB on MIL-101 photocatalyst

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