应用化学 ›› 2023, Vol. 40 ›› Issue (5): 681-696.DOI: 10.19894/j.issn.1000-0518.220335

• 综合评述 • 上一篇    下一篇

用于降解印染废水中有机污染物的光催化剂的研究进展

雷学博1, 刘慧景1(), 丁赫宇1, 申国栋1, 孙润军1,2   

  1. 1.西安工程大学纺织科学与工程学院,西安 710048
    2.西安工程大学智能纺织材料与制品国家重点实验室,西安 710048
  • 收稿日期:2022-10-13 接受日期:2023-03-09 出版日期:2023-05-01 发布日期:2023-05-26
  • 通讯作者: 刘慧景
  • 基金资助:
    国家自然科学基金(21802106);中国博士后科学基金项目(2019M653860XB);陕西省自然科学基础研究计划项目(2021JQ-681)

Research Progress on Photocatalysts for Degradation of Organic Pollutants in Printing and Dyeing Wastewater

Xue-Bo LEI1, Hui-Jing LIU1(), He-Yu DING1, Guo-Dong SHEN1, Run-Jun SUN1,2   

  1. 1.School of Textile Science and Engineering,Xi′an Polytechnic University,Xi′an 710048,China
    2.State Key Laboratory of Intelligent Textile Material and Products,Xi′an Polytechnic University,Xi′an 710048,China
  • Received:2022-10-13 Accepted:2023-03-09 Published:2023-05-01 Online:2023-05-26
  • Contact: Hui-Jing LIU
  • About author:liuhuijing@xpu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21802106);the China Postdoctoral Science Foundation(2019M653860XB);the Natural Science Basic Research Program of Shaanxi(2021JQ-681)

摘要:

纺织工业印染废水的大量排放是造成水体污染物增多的主要因素之一,对人体健康和生态环境的良性循环造成严重威胁。目前,采用的物理吸附法、化学氧化法以及生物分解法等废水处理技术成本高昂、治污不彻底且容易产生二次污染,加快研发经济高效的处理技术对降低水资源消耗、保护环境意义重大。光催化降解法是催化剂受光辐照后在反应体系中产生活性自由基,自由基进一步与有机污染物反应,使其完全降解。由于该方法经济高效,不易造成二次污染,符合绿色环保的发展要求,已成为污染物降解的研究热点。本文主要综述了近10年光催化技术在降解有机污染物领域的具体方法与研究进展,指出无机半导体、金属有机框架和有机小分子材料作为光催化剂存在的弊端,而多孔共轭聚合物兼具优异的光催化降解和吸附性能,具有很好的发展前景。

关键词: 印染废水, 光催化, 无机半导体材料, 金属有机框架, 多孔共轭聚合物

Abstract:

Dye-containing wastewater, largely discharged from the textile or printing industries, is one of the well-known sources of water pollution, posing great threats to both human health and the living environment. Although several water treatment technologies including physisorption, chemical oxidation, and biodegradation have been developed, most of them are costly and may produce some by-products with unknown toxicities. Therefore, it is highly desirable to develop economic and effective treatment technologies to reduce water resource consumption and protect the environment. Photocatalysis is a method in that highly reactive transitory species such as superoxide or hydroxyl radicals can be generated by reacting oxygen or water with photocatalysts upon irradiation of light, then degrading the organic dyes. Because the whole photocatalysis process has no chemical input and no secondary pollutants, it is considered to be an environmentally friendly, energy-efficient, and sustainable technique. In this paper, we have reviewed different kinds of photocatalyst systems developed in recent ten years for the degradation of organic pollutes, which cover inorganic semiconductors, metal-organic frameworks, organic small molecules, and conjugated porous polymers. Based on the large surface area and high photocatalytic activity, the conjugated porous polymers can simultaneously adsorb and photodegrade organic dyes under visible light, exhibiting stronger developmental potential compared with other photocatalytic materials.

Key words: Printing and dyeing wastewater, Photocatalysis, Inorganic semiconductor materials, Metal-organic frameworks, Porous conjugated polymers

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