可磁分离回收多孔CoFe_2O_4的制备及其催化过一硫酸盐降解亚甲基蓝溶液的性能
Preparation of magnetically-separated porous CoFe_2O_4 and its performance in activating PMS for methylene blue degradation
查看参考文献28篇
文摘
|
采用草酸盐热解法制得Fe_2O_3,Co_3O_4以及CoFe_2O_4三种过渡金属氧化物多孔材料。借助XRD,SEM,BET,VSM和XPS等测试手段对材料的晶体结构、微观形貌、比表面积、磁学性能以及表面化学状态进行分析。选择典型的阳离子型染料亚甲基蓝(MB)作为降解模型,对三种样品催化活化过一硫酸盐(PMS)降解处理模拟印染废水的性能进行评价。结果表明:三种材料均具有分级微/纳米纤维状多孔结构,CoFe_2O_4因具有最大的比表面积以及Fe,Co元素间的协同效应比Fe_2O_3和Co_3O_4表现出更为优异的催化PMS降解MB溶液的性能。通过单因素实验,确定出CoFe_2O_4/PMS体系降解500 mL浓度为10 mg·L~(-1) MB溶液的优化条件为:PMS用量3 mL(0.1 mol·L~(-1)),催化剂添加量0.07 g,反应时间50 min。在此条件下,MB的降解去除率为89.77%。考察几种阴离子对CoFe_2O_4/PMS催化氧化体系的影响,发现Cl~-,PO_4~(3-), C_2O_4~(2-)的存在均对MB的降解有一定的抑制作用。活性物种猝灭实验和电子顺磁共振(EPR)鉴定结果证实,~1O_2是CoFe_2O_4/PMS催化氧化体系中产生的最主要活性物种。循环使用实验结果表明,CoFe_2O_4具有较好的稳定性,且可磁分离回收特性使其可作为活化PMS降解印染废水的候选催化材料。 |
其他语种文摘
|
Three kinds of porous transition metal oxide materials,Fe_2O_3,Co_3O_4 and CoFe_2O_4,were successfully prepared by oxalate-routed pyrolysis method.The crystal structure,morphology,specific surface area,magnetic property and surface chemical state of those materials were characterized by XRD,SEM,BET,VSM and XPS,respectively.The catalytic performance towards PMS activation for degradation of simulated printing and dyeing wastewater were evaluated,taking a typical cationic dye methylene blue(MB)as the degradation model.The results show that all the three materials present hierarchical micro/nano porous fibrous structure,and a much higher PMS activation performance of CoFe_2O_4 is observed comparing with Fe_2O_3 and Co_3O_4 due to its highest specific surface area as well as the concerted catalytic effect between iron and cobalt elements.Through a series of single-factor experiments,the optimal process conditions for MB(10 mg·L~(-1),500 mL) degradation in CoFe_2O_4/PMS system are determined as follows:PMS dosage of 3 mL(0.1 mol·L~(-1)), catalyst dosage of 0.07 g and reaction time of 50 min.Under this reaction condition,MB removal rate of 89.77% can be achieved.Meanwhile,effect of common anions on CoFe_2O_4/PMS advanced oxidation system is also investigated.It is found that the presence of Cl~-,PO_4~(3-) and C_2O_4~(2-) all exhibit inhibition for MB degradation in different degrees.Besides,quenching experiments and electron paramagnetic resonance(EPR)identification results both confirm that ~1O_2 is the primary active specie in CoFe_2O_4/PMS advanced oxidation system.Furthermore,the recycling experiments indicate that CoFe_2O_4 presents a long-term stability.More importantly,CoFe_2O_4 can be easily separated from liquids after the reaction with an external magnet owing to its good magnetic property.The results demonstrate that CoFe_2O_4 is a promising catalyst candidate in activating PMS to degrade dyeing wastewater. |
来源
|
材料工程
,2022,50(6):107-116 【核心库】
|
DOI
|
10.11868/j.issn.1001-4381.2021.000558
|
关键词
|
草酸盐热解法
;
CoFe_2O_4
;
过一硫酸盐
;
磁分离回收
;
亚甲基蓝
|
地址
|
重庆理工大学化学化工学院, 重庆
|
语种
|
中文 |
文献类型
|
研究性论文 |
ISSN
|
1001-4381 |
学科
|
化学 |
基金
|
重庆市教委项目
;
重庆理工大学科研项目
|
文献收藏号
|
CSCD:7261511
|
参考文献 共
28
共2页
|
1.
任钢锋. 我国工业印染废水处理状况研究.
节能与环保,2021(4):76-78
|
被引
4
次
|
|
|
|
2.
Taoufik N. Comparative overview of advanced oxidation processes and biological approaches for the removal pharmaceuticals.
Journal of Environmental Management,2021,288:112404
|
被引
2
次
|
|
|
|
3.
Anipsitakis G P. Degradation of organic contaminants in water with sulfate radicals generated by the conjunction of peroxymonosulfate with cobalt.
Environmental Science & Technology,2003,37(20):4790-4797
|
被引
153
次
|
|
|
|
4.
Wang J L. Reactive species in advanced oxidation processes:formation,identification and reaction mechanism.
Chemical Engineering Journal,2020,401:126158
|
被引
16
次
|
|
|
|
5.
Hu P D. Cobalt-catalyzed sulfate radical-based advanced oxidation:a review on heterogeneous catalysts and applications.
Applied Catalysis:B,2016,181:103-117
|
被引
51
次
|
|
|
|
6.
Yang Q. Recent advances in photoactivated sulfate radical-advanced oxidation process(SR-AOP)for refractory organic pollutants removal in water.
Chemical Engineering Journal,2019,378:122149
|
被引
21
次
|
|
|
|
7.
向小倩. 多孔α-MN_2O_3的制备及其催化过一硫酸盐降解亚甲基蓝溶液的性能.
材料工程,2022,50(2):164-172
|
被引
2
次
|
|
|
|
8.
张笑丛. 不同形貌氧化钴活化过一硫酸盐降解硝基酚.
化学工业与工程,2020,37(6):38-47
|
被引
4
次
|
|
|
|
9.
Jian S Z. Highly efficient persulfate oxidation process activated with NiO nanosheets with dominantly exposed{1 1 0}reactive facets for degradation of RhB.
Applied Surface Science,2020,505:144318
|
被引
1
次
|
|
|
|
10.
Zuo S Y. The polarized electric field on Fe_2O_3/g-C_3N_4for efficient peroxymonosulfate activation:a synergy of 1 O_2,electron transfer and pollutant oxidation.
Separation and Purification Technology,2021,269:118717
|
被引
1
次
|
|
|
|
11.
Li Z S. Bismuth MOFs based hierarchical Co_3O_4-Bi_2O_3composite:an efficient heterogeneous peroxymonosulfate activator for azo dyes degradation.
Separation and Purification Technology,2020,242:116825
|
被引
3
次
|
|
|
|
12.
Zhang H X. Enhanced removal of lomefloxacin based on peroxymonosulfate activation by Co_3O_4/δ-FeOOH composite.
Chemical Engineering Journal,2019,369:834-844
|
被引
4
次
|
|
|
|
13.
Yuan R X. Hierarchical MnO_2 nanoflowers blooming on 3Dnickel foam:a novel micro-macro catalyst for peroxymonosulfate activation.
Journal of Colloid and Interface Science,2020,571:142-154
|
被引
3
次
|
|
|
|
14.
Lv C Z. Hydroxyapatite supported Co_3O_4catalyst for enhanced degradation of organic contaminants in aqueous solution:synergistic visible-light photo-catalysis and sulfate radical oxidation process.
Microchemical Journal,2019,149:103959
|
被引
1
次
|
|
|
|
15.
Hu L X. CoFe/SBA-15catalyst coupled with peroxymonosulfate for heterogeneous catalytic degradation of rhodamine B in water.
Chinese Journal of Catalysis,2015,36(10):1785-1797
|
被引
3
次
|
|
|
|
16.
Yang L M. Fe/N-codoped carbocatalysts loaded on carbon cloth(CC)for activating peroxymonosulfate(PMS)to degrade methyl orange dyes.
Applied Surface Science,2021,549:149300
|
被引
4
次
|
|
|
|
17.
佘月城. MnFe_2O_4活化过一硫酸盐降解废水中LAS.
中国环境科学,2019,39(8):3323-3331
|
被引
20
次
|
|
|
|
18.
Zhou Z G. Degradation of organic pollutants by peroxymonosulfate activated by MnO_2 with different crystalline structures:catalytic performances and mechanisms.
Chemical Engineering Journal,2019,374:170-180
|
被引
5
次
|
|
|
|
19.
Gong C. Heterogeneous activation of peroxymonosulfate by Fe-Co layered doubled hydroxide for efficient catalytic degradation of rhoadmine B.
Chemical Engineering Journal,2017,321:222-232
|
被引
20
次
|
|
|
|
20.
Miao F. Electro-enhanced heterogeneous activation of peroxymonosulfate via acceleration of Fe (III)/Fe(II)redox cycle on Fe-B catalyst.
Electrochimica Acta,2021,377:138073
|
被引
4
次
|
|
|
|
|