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氧化亚钴复合材料催化降解三溴苯酚

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李春雨, 吴浩伟, 陈月, 唐玉霖. 氧化亚钴复合材料催化降解三溴苯酚[J]. 环境化学, 2020, (5): 1210-1216. doi: 10.7524/j.issn.0254-6108.2019081202
引用本文: 李春雨, 吴浩伟, 陈月, 唐玉霖. 氧化亚钴复合材料催化降解三溴苯酚[J]. 环境化学, 2020, (5): 1210-1216. doi: 10.7524/j.issn.0254-6108.2019081202
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LI Chunyu, WU Haowei, CHEN Yue, TANG Yulin. Catalytic degradation of tribromophenol by cobalt oxide composites[J]. Environmental Chemistry, 2020, (5): 1210-1216. doi: 10.7524/j.issn.0254-6108.2019081202
Citation: LI Chunyu, WU Haowei, CHEN Yue, TANG Yulin. Catalytic degradation of tribromophenol by cobalt oxide composites[J]. Environmental Chemistry, 2020, (5): 1210-1216. doi: 10.7524/j.issn.0254-6108.2019081202
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氧化亚钴复合材料催化降解三溴苯酚

  • 1. 同济大学环境科学与工程学院, 上海, 200092;

  • 2. 河北建设集团安装工程有限公司, 保定, 071000

    • 通讯作者: 唐玉霖, E-mail: tangtongji@126.com
  • 基金项目:

    国家自然科学基金（21776224）和国家重大水专项（2017ZX07201-002）资助.

Catalytic degradation of tribromophenol by cobalt oxide composites

  • 1. College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China;

  • 2. Hebei Construction Group Installation Engineering Co., Baoding, 071000, China

    • Corresponding author: TANG Yulin, tangtongji@126.com
  • Fund Project: Supported by the National Natural Science Foundation of China (21776224) and National Water Pollution Control and Treatment Key Technologies RD Program (2017ZX07201-002).

  • 摘要: 本论文利用具有可见光催化性能的氧化亚钴/石墨烯（CoO/石墨烯）复合材料降解2，4，6-三溴苯酚（2，4，6-tribromophenol，TBP），探究其光催化降解效能与反应机理.研究发现，在光催化降解阶段，CoO/石墨烯复合材料光照120 min后，日光比可见光具有更强的降解效率，将TBP总去除率从21.8%提升至51.4%，日光中的紫外部分容易被材料利用来降解TBP.将光催化与高级氧化技术联用，构建CoO/石墨烯复合材料活化两种过硫酸盐PS与PMS的光芬顿体系.研究可知，单独光照活化过硫酸盐效果不佳，CoO/石墨烯-过硫酸盐类芬顿体系较Co2+-过硫酸盐均相体系TBP降解效率更高，反应更彻底.加入光照后，光照-CoO/石墨烯-过硫酸盐光芬顿体系具有较高的污染物降解率和TOC矿化度，反应速率常数进一步提高，在日光照射下，TOC去除率达到98.9%.
    Abstract: The effect and mechanism of the degradation of 2,4,6-tribromophenol (TBP) by cobalt oxide/graphene (CoO/graphene) composite with visible light catalytic property was investigated. Results showed that the total removal rate of TBP increased from 21.8% under visible light to 51.4% under sunlight after 120 min light irradiation of CoO/graphene composite during the photocatalytic degradation stage, which demonstrated that sunlight had stronger degradation capability than visible light. The phenomenon could be ascribed to the easier utilization of ultraviolet of sunlight by materials to degrade TBP. Furthermore, the photocatalysis and advanced oxidation technology were combined to establish a photo-Fenton system in which two persulfates PS and PMS were activated by CoO/graphene composite under radiation. It was found that the degradation effect of TBP by photo-activated persulfate alone process was quite poor. The CoO/graphene-persulfate Fenton system could degrade TBP more efficiently and completely than the Co2+-persulfate homogeneous system. After adding light irradiation, the CoO/graphene-persulfate light Fenton system had higher removal efficiency of TBP and TOC content, and the reaction rate constant was further improved. Under sunlight irradiation, the TOC removal efficiency reached 98.9%.
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  • 收稿日期:  2019-08-12

氧化亚钴复合材料催化降解三溴苯酚

    通讯作者: 唐玉霖, E-mail: tangtongji@126.com
  • 1. 同济大学环境科学与工程学院, 上海, 200092;
  • 2. 河北建设集团安装工程有限公司, 保定, 071000
  • 收稿日期:  2019-08-12
基金项目:

国家自然科学基金（21776224）和国家重大水专项（2017ZX07201-002）资助.

摘要: 本论文利用具有可见光催化性能的氧化亚钴/石墨烯（CoO/石墨烯）复合材料降解2，4，6-三溴苯酚（2，4，6-tribromophenol，TBP），探究其光催化降解效能与反应机理.研究发现，在光催化降解阶段，CoO/石墨烯复合材料光照120 min后，日光比可见光具有更强的降解效率，将TBP总去除率从21.8%提升至51.4%，日光中的紫外部分容易被材料利用来降解TBP.将光催化与高级氧化技术联用，构建CoO/石墨烯复合材料活化两种过硫酸盐PS与PMS的光芬顿体系.研究可知，单独光照活化过硫酸盐效果不佳，CoO/石墨烯-过硫酸盐类芬顿体系较Co2+-过硫酸盐均相体系TBP降解效率更高，反应更彻底.加入光照后，光照-CoO/石墨烯-过硫酸盐光芬顿体系具有较高的污染物降解率和TOC矿化度，反应速率常数进一步提高，在日光照射下，TOC去除率达到98.9%.

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