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Activation of Peroxymonosulfate by Co-Metal–Organic Frameworks as Catalysts for Degradation of Organic Pollutants
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2021-08-30 , DOI: 10.1021/acs.iecr.1c02259 Wenjia Mao 1, 2 , Xinting Wang 1, 2 , Xiaoli Hu 1, 2 , Zihan Lin 1 , Zhongmin Su 1, 2, 3
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2021-08-30 , DOI: 10.1021/acs.iecr.1c02259 Wenjia Mao 1, 2 , Xinting Wang 1, 2 , Xiaoli Hu 1, 2 , Zihan Lin 1 , Zhongmin Su 1, 2, 3
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Two novel Co-based metal–organic frameworks, namely, [Co3(H3bpt)2(1,4-bimb)3(H2O)2]·2DMF·H2O (CUST-560) and [Co3(H3bpt)2(4,4′-tmdp)2(H2O)2]·2CH3OH·H2O (CUST-561) (H3bpt = 3,4′,5-biphenyltricarboxylic acid, 4,4′-tmdp = 4,4-trimethylenedipyridine, and 1,4-bimb = 1,4-bis((1H-imidazol-1-yl)methyl)benzene), were synthesized under hydrothermal conditions and characterized. In this study, by adjusting several experimental parameters including catalyst dosage, PMS volume, temperature, and the initial value of pH, PMS activation toward two cationic dyes and two anionic dye degradations was systematically examined. Radical scavenging experiments revealed that SO4·– is considered to act as the paramount reactive oxygen species in the oxidation process. The Co(III)/Co(II) recycle of CUST-560 and CUST-561 is able to carry out an effective electronic transfer to PMS, facilitating the reaction process; thus, an eminent catalytic property has emerged. Consequently, the original material as-synthesized is thought to be a splendid activator to peroxymonosulfate activation for extermination and decolorization of dyes.
中文翻译：
金属-有机骨架作为催化剂降解有机污染物的过氧单硫酸盐的活化
两种新型 Co基金属有机骨架，即 [Co 3 (H 3 bpt) 2 (1,4-bimb) 3 (H 2 O) 2 ]·2DMF·H 2 O (CUST-560) 和 [Co 3 (H 3 bpt) 2 (4,4'-tmdp) 2 (H 2 O) 2 ]·2CH 3 OH·H 2 O (CUST-561) (H 3 bpt = 3,4',5-联苯三羧酸, 4,4'-tmdp = 4,4-三亚甲基二吡啶，和 1,4-bimb = 1,4-bis((1 H-咪唑-1-基)甲基)苯)，在水热条件下合成并表征。在这项研究中，通过调整几个实验参数，包括催化剂用量、PMS 体积、温度和 pH 初始值，系统地研究了 PMS 对两种阳离子染料和两种阴离子染料降解的活化。自由基清除实验表明，SO 4 · –被认为是氧化过程中最重要的活性氧。CUST-560 和 CUST-561 的 Co(III)/Co(II) 回收能够进行有效的电子转移到 PMS，促进反应过程；因此，出现了卓越的催化性能。因此，合成的原始材料被认为是过氧单硫酸盐活化的极好活化剂，用于消除和脱色染料。
更新日期：2021-09-15
中文翻译：
金属-有机骨架作为催化剂降解有机污染物的过氧单硫酸盐的活化
两种新型 Co基金属有机骨架，即 [Co 3 (H 3 bpt) 2 (1,4-bimb) 3 (H 2 O) 2 ]·2DMF·H 2 O (CUST-560) 和 [Co 3 (H 3 bpt) 2 (4,4'-tmdp) 2 (H 2 O) 2 ]·2CH 3 OH·H 2 O (CUST-561) (H 3 bpt = 3,4',5-联苯三羧酸, 4,4'-tmdp = 4,4-三亚甲基二吡啶，和 1,4-bimb = 1,4-bis((1 H-咪唑-1-基)甲基)苯)，在水热条件下合成并表征。在这项研究中，通过调整几个实验参数，包括催化剂用量、PMS 体积、温度和 pH 初始值，系统地研究了 PMS 对两种阳离子染料和两种阴离子染料降解的活化。自由基清除实验表明，SO 4 · –被认为是氧化过程中最重要的活性氧。CUST-560 和 CUST-561 的 Co(III)/Co(II) 回收能够进行有效的电子转移到 PMS，促进反应过程；因此，出现了卓越的催化性能。因此，合成的原始材料被认为是过氧单硫酸盐活化的极好活化剂，用于消除和脱色染料。
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