以不锈钢为基体,采用连续阴极电沉积的方法,制备了ZnO/Cu2O复合膜,并通过 X-射线衍射和扫描电镜进行了表征.以Cr(Ⅵ)为模拟无机污染物,在可见光下,测试了其光催化还原活性.结果表明,ZnO/Cu2O复合膜的光催化活性与Cu2O的沉积量有关,在其沉积量为0.010 g/dm2时,反应1h后,Cr(Ⅵ)在ZnO/Cu2O上的还原率为35.3%,而在Cu2O薄膜上的还原率仅为8.6%.实验还发现,ZnO/Cu2O复合膜的光催化氧化能力也有了较大程度的提高.在相同实验条件下,甲基橙在Cu2O薄膜上的降解率只有2.5%,而在ZnO/Cu2O复合膜上的降解率达到22.9%.
参考文献
| [1] | Michikazu Hara;Takeshi Kondo;Mutsuko Komoda;Sigeru Ikeda;Kiyoaki Shinohara;Akira Tanaka;Junko N. Kondo;Kazunari Domen .Cu_2O as a photocatalyst for overall water splitting under visible light irradiation[J].Chemical communications,1998(1):357-358. |
| [2] | Sashikala Somasundaram;C. Raman Nair Chenthamarakshan;Norma R. de Tacconi;Krishnan Rajeshwar .Photocatalytic production of hydrogen from electrodeposited P-Cu_2O film and sacrificial electron donors[J].International journal of hydrogen energy,2007(18):4661-4669. |
| [3] | Jeong S S;Mittiga A;Salza E et al.Electrodeposited ZnO/Cu2O heterojunction solar cells[J].Electrochimica Acta,2008,53:2226-2231. |
| [4] | 唐一文,陈志钢,张丽莎,贾志勇,张新.纳米Cu2O/TiO2异质结薄膜电极的制备和表征[J].无机材料学报,2006(02):453-458. |
| [5] | 王春祥,张青,薛敏钊,盛巧蓉,刘燕刚.ITO和ZnO基底对电化学沉积氧化亚铜薄膜的形貌、结构的影响及作用机制[J].感光科学与光化学,2007(01):18-23. |
| [6] | 尚静,谢绍东,刘建国.SnO2TiO2复合半导体纳米薄膜的研究进展[J].化学进展,2005(06):1012-1018. |
| [7] | Fathy N;Ichimura M .Electrochemical deposition of ZnO thin films from acidic solutions[J].Journal of Crystal Growth,2006(2):191-196. |
| [8] | 魏守强,卢旭东,邵忠财,刘瑛,田野.阴极电沉积制备铝掺杂ZnO薄膜及其光催化性能[J].硅酸盐学报,2009(05):793-797. |
| [9] | Wang L M;Wang N;Zhu L H et al.Photocatalytic reduction of Cr(VI) over different TiO2 photocatalysts and the effects of dissolved organic species[J].Journal of Hazardous Materials,2004,152(03):93-99. |
| [10] | 彭峰,陈水辉,张雷,王红娟,谢志勇.纳米ZnO薄膜的制备及其可见光催化降解甲基橙[J].物理化学学报,2005(08):944-948. |
| [11] | 陈志钢,唐一文,贾志杰,张丽莎,李家麟,余颖.导电玻片上氧化亚铜膜的电沉积和表征[J].无机材料学报,2005(02):367-372. |
| [12] | Xu Y;Schoonen M A A .The absolute energy positions of conduction and valence bands of selected semiconducting minerals[J].American Mineralogist,2000,85:543-556. |
| [13] | Sakthive S;Geissen S S;Bahnemann D W et al.Enhancement of photocatalytic activity by semiconductor heterojunctions:α-Fe2O3,WO3 and CdS deposited on ZnO[J].J Photo-Chem Photobiol A:Chem,2002,148(1/3):283-293. |
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