掺杂态Co_3O_4的制备及其对亚甲基蓝的催化性能研究
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摘要
以Co(NO_3)_2·6H_2O为钴源,K_2CO_3为沉淀剂,采用液相沉淀和煅烧两步法制得纳米Co_3O_4,通过掺入几种过渡金属元素制得了一系列掺杂态Co_3O_4.以亚甲基蓝溶液模拟染料废水,考察了不同样品对亚甲基蓝的催化脱色效果.结果表明,几种不同掺杂态Co_3O_4样品对亚甲基蓝的催化脱色有较大差别,掺Cr的Co_3O_4对亚甲基蓝的催化降解效果最佳,可达99.1%.
Co_3O_4 nanoparticles were prepared by two steps:liquid-phase precipitation and calcination,with Co(NO3)2·6 H2 O as Co source and K2 CO3 as precipitant.The different doped state Co_3O_4 compound nanoparticles were synthesized by doping several transitional metal elements.Methylene Blue solutions were prepared as model environmental liquid and the decolorization effect of different samples on the methylene blue was evaluated.The results showed that there were great differences of catalytic decolorization effects between the different doped state Co_3O_4 samples.The catalytic decolorization effect of Cr doped Co_3O_4 was the best at 99.1%.
Co_3O_4 nanoparticles were prepared by two steps:liquid-phase precipitation and calcination,with Co(NO3)2·6 H2 O as Co source and K2 CO3 as precipitant.The different doped state Co_3O_4 compound nanoparticles were synthesized by doping several transitional metal elements.Methylene Blue solutions were prepared as model environmental liquid and the decolorization effect of different samples on the methylene blue was evaluated.The results showed that there were great differences of catalytic decolorization effects between the different doped state Co_3O_4 samples.The catalytic decolorization effect of Cr doped Co_3O_4 was the best at 99.1%.
引文
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[3]王萌,付卫东,姚亚东.Fe3O4@SiO2@Co3O4三元核壳结构催化剂的制备及表征[J].四川有色金属,2014,(04):57-59.
[4]刘倩,刘长相,温世和,等.纳米Fe3O4/Co3O4催化H2O2氧化降解亚甲基蓝[J].南昌工程学院学报,2014,33(03):70-73.
[5]潘超.新颖Co3O4分级结构的制备及其光催化性能研究[J].化学学报,2011,69(08):21-25.
[6]刘辉,李彤,吕景.花状Co3O4纳米材料的制备及其电化学性能[J].陕西科技大学学报,2018,36(02):113-123.
[7]王君,Asif Hussain,李登新.易回收Co3O4/氧化石墨烯/氧化纤维素的制备及其对染料降解的研究[J].环境污染与防治,2017,39(12):1337-1342.
[8]葛金龙,杨珊珊,孙鹏飞.形貌可控Co3O4颗粒的制备及表征[J].长春师范大学学报,2018,37(06):107-111.
[9]Shengtao Xing,Zicheng Zhou,Zichuan Ma,et al.Characterization and reactivity of Fe3O4/FeMnOx core/shell nanoparticles for methylene blue discoloration with H2O2[J].Applied Catalysis B:Environmental,2011,(107):386-392.
[10]梁艳,张文霞,王芳,等.氧化铬催化剂催化氟化1,1,1-三氟2-氯乙烷性能研究[J].化工生产与技术,2016,23(01):1-3.