陶建强,陈张敬之,韦丽,王骏,张阳

• 1:中石化新疆新春石油开发有限责任公司
• 2:天津工业大学省部共建分离膜与膜过程国家重点实验室
• 3:天津工业大学环境科学与工程学院

摘要(Abstract)：

为了探究钴氧化物改性氮掺杂石墨烯（Co_3O_4/NG）催化膜对过一硫酸盐（PMS）降解污染物的性能和作用机理，以硝酸钴六水合物和氧化石墨烯（GO）作为前驱体，通过水热反应成功制备了Co_3O_4/NG，并使用该材料构建复合膜用于水中污染物的催化降解。采用SEM、HRTEM、XPS、Raman、BET、TGA等一系列测试手段对材料的形貌结构、元素组成和化学形态进行表征，并选择布洛芬（IBP）作为目标污染物测试复合材料的催化活性及机理。结果表明：Co_3O_4/NG复合材料具有石墨烯片状相貌，合成的Co_3O_4具有立方六面体结构，负载在石墨烯表面，N原子被成功掺，原子分数高达6.25%;Co_3O_4/NG展示出超高的PMS催化活性，在120 min内对IBP的去除率达到99.9%，远高于NG(60.5%)；通过优化Co_3O_4负载量、PMS添加量以及过硫酸盐类型得到了最佳反应条件。在此基础上构建Co_3O_4/NG复合膜并研究其连续催化性能，当催化剂负载量为10 mg，流速为5 mL/min时，连续10次循环实验之后仍然能够去除约80%的IBP，表现出良好的催化稳定性。机理研究表明Co_3O_4/NG-PMS体系是一个以硫酸根自由基和羟基自由基为主导的反应体系，其中硫酸根自由基的贡献更大。

关键词(KeyWords)： 石墨烯催化膜;四氧化三钴;过硫酸盐;高级氧化;水污染控制;催化降解布洛芬

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目（2018YFA0702400）;; 国家自然科学基金资助项目（21906117,52170008）

作者(Author): 陶建强,陈张敬之,韦丽,王骏,张阳

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