Activation of peroxymonosulfate by Al2O3-based CoFe2O4 for the degradation of sulfachloropyridazine sodium: Kinetics and mechanism
Activation of peroxymonosulfate by Al2O3-based CoFe2O4 for the degradation of sulfachloropyridazine sodium: Kinetics and mechanism
复制标题
Al2O3 基 CoFe2O4 活化过一硫酸盐降解磺胺氯哒嗪钠：动力学和机理
DOI：
10.1016/j.seppur.2017.07.046
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发表时间：
2017-12
影响因子：
8.6
通讯作者：
An Na
中科院分区：
文献类型：
--
作者：
Wang Qiongfang;Shao Yisheng;Gao Naiyun;Chu Wenhai;Chen Juxiang;Lu Xian;Zhu Yanping;An Na
摘要：制备了以al_2o_3为基体的al_2o_3 （cofe_2o_4 / al_2o_3）为催化剂，活化过氧单硫酸盐（PMS）降解磺胺氯吡嗪（SCP）。总的来说，cofe2o4 / al2o3在活化PMS中的催化性能比cofe2o4更有效。考察了清除剂、PMS浓度、pH、阴离子、天然有机物质（NOM）和温度等因素的影响。SCP的氧化符合准一级动力学模型，在pH为5.00 ~ 8.00范围内氧化效果良好。清除剂的影响表明，so4 -·在氧化过程中比HO·起更大的作用。添加no3 -对去除率有较强的抑制作用，而添加no3 -对去除率几乎没有影响，而氯化物则能增强系统的降解。温度的升高极大地促进了SCP的降解。循环4次后，CoFe 2o /Al 2o _3仍具有较好的催化性能，SCP去除率达97.6%。在此基础上，对其降解机理进行了探讨。在cofe2o4 / al2o3复合材料中，al2o3仅作为基体碱，没有额外的催化性能。
Abstract Al 2 O 3-based CoFe 2 O 4 (CoFe 2 O 4/Al 2 O 3) as a catalyst was prepared to activate peroxymonosulfate (PMS) for degradation of sulfachloropyridazine (SCP). In general, the catalytic performance of CoFe 2 O 4/Al 2 O 3 in activation PMS was demonstrated more effective than CoFe 2 O 4. Several influence factors were inspected, including scavengers, PMS concentration, pH, anions, nature organic matter (NOM) and temperature. The oxidation of SCP fitted a pseudo-first-order kinetics model and was efficient with the pH from 5.00 to 8.00. The influence of scavengers demonstrated that SO 4-· played a more significant role than HO· in the oxidation process. The removal was strongly inhibited by adding NOM or HCO 3-, and almost unaffected by adding NO 3-, while chloride could enhance the degradation in the system. The increasing temperature greatly promoted the degradation of SCP. After four recycles, CoFe 2 O 4/Al 2 O 3 still showed preferable catalytic performance with 97.6% removal rate of SCP. Furthermore, the degradation mechanism was explored based on the XPS results. In the composit of CoFe 2 O 4/Al 2 O 3, Al 2 O 3 had no additional catalytic performance but just as a matrix base.
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影响因子：
13.6
作者：
Zhao-hui Wang;Ruixia Yuan;Yaoguang Guo;Lei Xu;Jianshe Liu
通讯作者：
Zhao-hui Wang;Ruixia Yuan;Yaoguang Guo;Lei Xu;Jianshe Liu
影响因子：
22.1
作者：
Ji, Yaying;Bai, Shuli;Crocker, Mark
通讯作者：
Crocker, Mark
影响因子：
9.5
作者：
Wenjie Tian;Huayang Zhang;Xiaoguang Duan;Hongqi Sun;M. Tadé;H. Ang;Shaobin Wang
通讯作者：
Wenjie Tian;Huayang Zhang;Xiaoguang Duan;Hongqi Sun;M. Tadé;H. Ang;Shaobin Wang
影响因子：
8.6
作者：
Shu-ting Liu;Ao-Bo Zhang;Kangkang Yan;Y. Ye;Xuegang Chen
通讯作者：
Shu-ting Liu;Ao-Bo Zhang;Kangkang Yan;Y. Ye;Xuegang Chen
影响因子：
8.8
作者：
Liang, Chenju;Wang, Zih-Sin;Bruell, Clifford J.
通讯作者：
Bruell, Clifford J.