文摘
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通过水热法制备了ZnFe_2O_4催化剂,使用扫描透射电镜、能量分散谱仪和X射线衍射仪等表征手段分析其微观形貌、化学组成和晶体类型;研究了其对双酚A (BPA)废水的光催化降解性能,考察H_2O_2投加量、催化剂循环使用次数对催化降解效果的影响。结果表明,所制备的ZnFe_2O_4为木屑状、具有微孔结构的立方尖晶石型材料;单一ZnF_2O_4在紫外光激发下对BPA废水具有光催化降解能力,反应120min,BPA降解率为81.6%;在添加H_2O_2后,系统催化性能得到提升,反应90 min, BPA降解率高达98.5%;优化的H_2O_2投入浓度为1 mmol/L。所制备ZnFe_2O_4有稳定的催化能力,可循环利用。 |
其他语种文摘
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ZnFe_2O_4 fenton-like catalyst was fabricated by hydrothermal method. The morphology, composition and crystal structure of ZnFe_2O_4 were characterized by SEM, EDS and XRD. The photo-catalytic performance of ZnFe_2O_4 was studied. The effects of H_2O_2 dosage and recycle of catalyst on the BPA degradation were investigated. The results showed that ZnFe_2O_4 had the sawdust-like, porous microstructure and cubic structure of spinel-phase. As-prepared ZnFe_2O_4 exhibited remarkable ability to remove BPA under UV irradiation, as 81.6% remove ratio at 120 min. The catalytic performance of the system was enhanced after adding H_2O_2, as 98.5% remove ratio at 90 min. The optimal concentration of H_2O_2 was 1 mmol/L. The prepared ZnFe_2O_4 has stable catalytic capability, which can be recycled. |
来源
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水处理技术
,2014,40(11):48-51 【扩展库】
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关键词
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类Fenton
;
光催化
;
ZnFe_2O_4
;
双酚A
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地址
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1.
中国科学院广州地球化学研究所, 广东, 广州, 510640
2.
环境保护部华南环境科学研究所, 广东, 广州, 510655
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-3770 |
学科
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化学工业;行业污染、废物处理与综合利用 |
基金
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国家水体污染与治理科技重大专项
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文献收藏号
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CSCD:5290881
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