| Ta/Al-Fe2O3薄膜电极的制备及其光电催化降解亚甲基蓝性能 |
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| 引用本文： | 金环,王娟,姬云,陈媚媚,张轶,王齐,丛燕青. Ta/Al-Fe2O3薄膜电极的制备及其光电催化降解亚甲基蓝性能[J]. 物理化学学报, 2015, 31(5): 955-964. DOI: 10.3866/PKU.WHXB201503112 |
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| 作者姓名： | 金环 王娟 姬云 陈媚媚 张轶 王齐 丛燕青 |
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| 作者单位： | 1 浙江工商大学环境科学与工程学院, 杭州310018;
2 浙江省标准化研究院, 杭州310006 |
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| 基金项目： | The project was supported by the National Natural Science Foundation of China (21477114), Zhejiang Provincial Foundation for Leaders of Disciplines in Science of China (PD2013170), Natural Science Foundation of Zhejiang Province, China (LY14E080002, LY14B070002, R5100266), and Graduate Innovation Foundation of Zhejiang Gongshang University, China (1260XJ1513152). |
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| 摘 要： | 采用简单的涂滴法制备出新型的Al、Ta 共掺杂的三元铁氧化物(Ta/Al-Fe2O3)可见光响应型光催化薄膜. 运用X射线光电子能谱(XPS)和紫外-可见(UV-Vis)光谱等手段对其进行了表征, 考察了其光电化学性能, 并研究了复合电极光电催化降解亚甲基蓝(MB)废水的反应性能. 由表面谱学分析可知, Ta 和Al 成功掺入Fe2O3中, Ta 会改变催化剂表面Al 和O的化学环境. 在可见光照射下的光电催化(PEC)反应中, Ta/Al-Fe2O3降解MB的反应速率约为Al-Fe2O3的2 倍, 光电催化共作用的效果优于单纯光催化作用(PC)和电催化(EC)作用的效果.结果表明, Ta掺杂有利于提高Ta/Al-Fe2O3薄膜的光电催化活性.
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| 关 键 词： | Ta/Al-Fe2O3 光电催化 可见光 亚甲基蓝 降解 |
| 收稿时间： | 2015-01-09 |
Synthesis of Ta/Al-Fe2O3 Film Electrode and Its Photoelectrocatalytic Performance in Methylene Blue Degradation |
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| JIN Huan,WANG Juan,JI Yun,CHEN Mei-Mei,ZHANG Yi,WANG Qi,CONG Yan-Qing. Synthesis of Ta/Al-Fe2O3 Film Electrode and Its Photoelectrocatalytic Performance in Methylene Blue Degradation[J]. Acta Physico-Chimica Sinica, 2015, 31(5): 955-964. DOI: 10.3866/PKU.WHXB201503112 |
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| Authors: | JIN Huan WANG Juan JI Yun CHEN Mei-Mei ZHANG Yi WANG Qi CONG Yan-Qing |
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| Affiliation: | 1.School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, P. R. China;2.Zhejiang Institute of Standardization, Hangzhou 310006, P. R. China |
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| Abstract: | A novel visible-light-responsive photoanode (Ta/Al-Fe2O3) was fabricated by co-doping Ta and Al into iron oxide. The properties of the prepared electrodes were examined using X- ray photoelectron spectroscopy (XPS) and ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy. XPS analysis suggested that the surface chemical environments of Al and O were significantly affected by Ta doping. Photoelectrochemical (PEC), electrocatalytic (EC), and photocatalytic (PC) degradations of methylene blue (MB) were performed using Ta/Al-Fe2O3 and Al-Fe2O3 electrodes as the photoanodes. The results indicated that synergetic effects in PEC enhanced the MB degradation efficiency compared with the individual PC or EC processes. The estimated rate constant for MB degradation on Ta/Al-Fe2O3 was about twice that on Al-Fe2O3 under visible-light irradiation in the PEC process. The greatly improved visible-light activity and film stability indicated that Ta doping was an efficient way to improve the PEC activity of Ta/Al-Fe2O3 films. |
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| Keywords: | Ta/Al-Fe2O3 Photoelectrocatalysis Visible light Methylene blue Degradation |
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