当前位置: X-MOL 学术J. Taiwan Inst. Chem. E. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Combined microwave-induced and photocatalytic oxidation using zinc ferrite catalyst for efficient degradation of tetracycline hydrochloride in aqueous solution
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.5 ) Pub Date : 2018-08-28 , DOI: 10.1016/j.jtice.2018.08.008
Yixiong Pang , Lingjun Kong , Hengyi Lei , Diyun Chen , Gutha Yuvaraja

In this research, ZnFe2O4 was employed as heterogeneous catalyst for the degradation of tetracycline hydrochloride (TCH) by a novel combined microwave-induced (MW-induced) and photocatalytic oxidation. The ZnFe2O4 catalyst was synthesized using co-precipitation method, and characterized by XRD, TEM, BET and UV–Vis DRS. A microwave electrodeless discharge lamp (MEDL) was introduced to this process as a light source. 91.6% of TCH degradation was obtained in MW/MEDL/ZnFe2O4 system in 4 min. ZnFe2O4 catalyst had both microwave-catalytic and visible-light photocatalytic activities. The operation parameters, such as microwave output, catalyst dosage, initial pH and recycle runs, showed different influence on TCH degradation. The analysis of degradation mechanism indicated that h+ was the main active species for TCH degradation and little O2−• active species generated in MW/MEDL/ZnFe2O4 system. The decomposition intermediates of TCH were identified by LC-MS.



中文翻译:

使用铁酸锌催化剂的微波诱导和光催化组合氧化可有效降解水溶液中的四环素盐酸盐

在这项研究中,ZnFe 2 O 4被用作新型的微波诱导(MW诱导)和光催化氧化组合降解盐酸四环素(TCH)的非均相催化剂。采用共沉淀法合成了ZnFe 2 O 4催化剂,并通过XRD,TEM,BET和UV-Vis DRS对其进行了表征。微波无电极放电灯(MEDL)作为光源引入了该工艺。在MW / MEDL / ZnFe 2 O 4系统中,在4分钟内获得了91.6%的TCH降解。ZnFe 2 O 4该催化剂具有微波催化和可见光光催化活性。微波输出量,催化剂用量,初始pH值和循环运行等操作参数对TCH降解表现出不同的影响。降解机理分析表明,h +是TCH降解的主要活性种,在MW / MEDL / ZnFe 2 O 4体系中几乎没有O 2- 活性种产生。通过LC-MS鉴定了TCH的分解中间体。

更新日期:2018-08-28
down
wechat
bug