膨胀石墨负载氧化铜活化过硫酸盐用于降解盐酸四环素

徐睿; 杨威; 杨哲; 成倩兰; 顾丽婷; 郭盛

doi:10.13205/j.hjgc.202002006

膨胀石墨负载氧化铜活化过硫酸盐用于降解盐酸四环素

doi: 10.13205/j.hjgc.202002006

武汉工程大学化学与环境工程学院, 武汉 430205

基金项目:

国家自然科学基金项目（51604194）；武汉工程大学科学研究基金（k201609）；武汉工程大学校长基金（2017059）。

详细信息

作者简介:
徐睿(1995-),男,本科生,主要研究方向为新型环境材料的制备与应用。xr583923716@163.com

通讯作者:
郭盛(1986-),男,博士,副教授,主要研究方向为环境催化与吸附材料的设计与应用。guoshengwit@163.com

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出版历程
- 收稿日期: 2019-02-20

HIGH-EFFICIENT REMOVAL OF TETRACYCLINE HYDROCHLORIDE BASED ON PEROXYMONOSULFATE ACTIVATED BY CuO/EXPANDED GRAPHITE COMPOSITE

School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China

摘要

摘要: 通过浸渍加焙烧制备出膨胀石墨（EG）负载CuO复合材料（CuO/EG），并通过X射线衍射和扫描电镜对催化剂的晶体结构和表面形貌进行表征分析。将复合材料用于活化过硫酸盐（过氧单磺酸钾，PMS）降解盐酸四环素（TC），在焙烧温度为500℃，负载量为1：4，催化剂投加量为0.2 g/L，PMS投加量为0.2 g/L的条件下，CuO/EG/PMS体系在20 min内即可将TC完全降解。同时，研究发现该复合催化体系在较广pH范围（3~9）内，以及无机阴离子共存的条件下均保持高效的催化性能。催化剂循环使用5次后，仍具有较高的催化活性。捕获实验表明，催化降解体系中起主要作用的是SO₄^-·。此外，CuO/EG/PMS体系对于染料罗丹明B和酸性红G同样具有优异的降解效果，表明催化剂具有较好的普遍适用性。
- CuO /
- 膨胀石墨 /
- 过硫酸盐 /
- 硫酸根自由基 /
- 盐酸四环素
Abstract: A CuO-doped expanded graphite composite (CuO/EG) was prepared via impregnation and calcination. The properties including crystalline structure and morphology of CuO/EG were characterized by X-ray diffractometer (XRD) and scanning electron microscope (SEM). The as-prepared catalyst was applied for catalytic degradation of tetracycline hydrochloride (TC) wastewater by activation of peroxymonosulfate (PMS). TC could be completely degraded by CuO/EG/PMS system within 20 min under the reaction condition of calcination temperature 500℃, doping ratio of CuO to EG of 1:4, 0.2 g/L catalyst and 0.2 g/L PMS. CuO/EG/PMS system demonstrated excellent catalytic performance in a wide range of pH (3~9) and under the coexistence of inorganic anions. Moreover, the CuO/EG catalyst still exhibited good reusability even after 5 successive runs for TC degradation. Quenching experiments confirmed that SO₄^-·radicals were the dominant reactive species during the degradation process. In addition, CuO/EG/PMS system exhibited satisfactory removal of dyes such as Rhodamine B and acid red G, indicating that the catalyst had a novel universal applicability.
- copper oxide /
- expanded graphite /
- peroxymonosulfate /
- sulfate radical /
- tetracycline hydrochloride

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