纳米ZnO/Cu_2O光电催化降解刚果红的研究
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摘要
以纳米氧化锌与纳米氧化亚铜按一定的比例制备了复合光催化剂,以30 mg/L刚果红为模拟污染物,进行了光电催化脱色降解的研究。考察了光催化剂比例、降解方式、不同电解质、p H值和反应温度对刚果红脱色率的影响。结果表明,纳米氧化锌和纳米氧化亚铜以质量比6∶1为光催化剂,采用高压汞灯作光源,0.05 mol/L的硫酸钠作电解质,p H为9,温度为40℃下,光电催化降解刚果红1 h,脱色率达到91.40%,COD去除率达60.09%。
The photocatalyst of nano Zn O / Cu2 O was prepared by a certain proportion. The photoelectrocatalytic decolorization degradation rate,30 mg / L Congo red used in simulating pollutant,was studied with irradiation by the high pressure mercury lamp. Effects of the ratio of photocatalyst,degradation way,electrolyte type initial solution p H and reaction temperature on the decolorization rate of Congo red were investigated. The results show that the mass ration of nano-Zn O and nano-Cu2 O is 6 ∶ 1,the Na2SO4 concentration is 0. 05 mol / L,initial p H is 9,temperature is 40 ℃,using high pressure mercury lamp as light source,photoelectrocatalytic reaction 1 h,the decolorization rate reached 91. 40%,and COD removal rate reached 60. 09%.
The photocatalyst of nano Zn O / Cu2 O was prepared by a certain proportion. The photoelectrocatalytic decolorization degradation rate,30 mg / L Congo red used in simulating pollutant,was studied with irradiation by the high pressure mercury lamp. Effects of the ratio of photocatalyst,degradation way,electrolyte type initial solution p H and reaction temperature on the decolorization rate of Congo red were investigated. The results show that the mass ration of nano-Zn O and nano-Cu2 O is 6 ∶ 1,the Na2SO4 concentration is 0. 05 mol / L,initial p H is 9,temperature is 40 ℃,using high pressure mercury lamp as light source,photoelectrocatalytic reaction 1 h,the decolorization rate reached 91. 40%,and COD removal rate reached 60. 09%.
引文
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[4]任秋红,龚建宇,杨昌柱,等.电沉积Zn O膜光电催化降解4-硝基酚研究[J].环境科学与技术,2010,33(5):43-45.
[5]云广平,梁燕萍,吴振森.Ni-P/Ti O2/Cu2O复合膜的制备及其可见光催化活性研究[J].电镀与涂饰,2011,30(2):12-14.
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