Photoelectric catalytic degradation of Rhodamine B with modified TiO2 electrode

doi:10.11894/1005-829x.2016.36(4).005

INDUSTRIAL WATER TREATMENT ›› 2016, Vol. 36 ›› Issue (4): 21-24. doi: 10.11894/1005-829x.2016.36(4).005

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Photoelectric catalytic degradation of Rhodamine B with modified TiO₂ electrode

Wang Yinggang¹, Liu Tengfei¹, Gao Dan¹, Zhang Jinmeng¹, Zhang Hao²

1. Key Laboratory of Eco-remediation and Resource Reuse, Ministry of Education, Shenyang University, Shenyang 110044, China;
2. Environmental Protection Bureau of Anshan, Anshan 114000, China

Received:2016-03-07 Online:2016-04-20 Published:2016-04-26

改性TiO₂电极光电催化降解罗丹明B

王英刚¹, 刘腾飞¹, 高丹¹, 张金梦¹, 张昊²

1. 沈阳大学污染环境的生态修复与资源化技术教育部重点实验室, 辽宁沈阳 110044;
2. 鞍山市环境保护局, 辽宁鞍山 114000

作者简介:王英刚(1967-),博士,教授.E-mail:wyg0814@163.com.
基金资助:
国家自然科学基金项目(41171399);水体污染控制与治理科技重大专项(2012ZX07505-002);辽宁省科技厅公℃项目(2014003006)

Abstract

Abstract:

Using foamnickel as the carrier,the load typed Fe-Nco-doping with TiO₂ photocatalyst has been prepared by the sol-gel method. The surface morphology,particle size and crystal structure are characterized with scanning electron microscopy(SEM)and X-ray diffraction(XRD). The experimental results show that when the ratio of Fe,N and Ti is 0.001:0.02:1,the catalytic capacity of the prepared TiO₂ catalyst is the best. When the initial wastewater pH is 8,external biasing voltage 2 V,and photoelectric catalytic degradation 120 min,the Rhodamine B removing rate reaches 96.8%. On the basis of static experiments,the dynamic photoelectric catalytic degradation experiments for Rhodamine B are conducted with the home-made up-flow photoelectric catalytic three-phase fluidized bed reactor. When the residence time is 120 min,aeration rate 0.5 m³/h,and influent flow rate 120 mL/min,the Rhodamine B re-moving rate reaches 97.2%.

Key words: modified TiO₂, photoelectric catalysis, Rhodamine B

摘要：

以泡沫镍为载体,采用溶胶-凝胶法制备出负载型Fe-N共掺杂TiO₂光催化剂.使用扫描电镜和X射线衍射对其表面形貌、颗粒大小和晶体结构进行表征.通过实验确定n(Fe):n(N):n(Ti)=0.001:0.02:1时制备的TiO₂催化剂催化性能最好.当初始废水pH为8、外加偏电压为2V,光电催化降解120min时,罗丹明B去除率可达到96.8%.在静态实验基础上,利用自制的升流式光电催化三相流化床反应器对罗丹明B进行动态光电催化降解实验,当停留时间为120min、曝气量为0.5m³/h、进水流量为120mL/min时罗丹明B的去除率可达到97.2%.

关键词: 改性TiO₂, 光电催化, 罗丹明B

CLC Number:

X703

Wang Yinggang, Liu Tengfei, Gao Dan, Zhang Jinmeng, Zhang Hao. Photoelectric catalytic degradation of Rhodamine B with modified TiO₂ electrode[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(4): 21-24.

王英刚, 刘腾飞, 高丹, 张金梦, 张昊. 改性TiO₂电极光电催化降解罗丹明B[J]. 工业水处理, 2016, 36(4): 21-24.

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Photoelectric catalytic degradation of Rhodamine B with modified TiO₂ electrode

改性TiO₂电极光电催化降解罗丹明B

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