摘要:采用沉积-沉淀法制备BiOI和BiOI/CNTs复合光催化剂。用X-射线粉末衍射(XRD)和扫描电镜(SEM)对光催化样品进行表征。偶氮染料以甲基橙为研究对象,模拟太阳光中的可见光,研究BiOI/CNTs对甲基橙的降解。本实验采用单因素分析法在其他条件不变的情况下,分别改变溶液浓度、催化剂用量及光照时间,然后测量出在不同反应条件下的吸光度,计算出降解率。研究表明:在模拟可见光的情况下,在低浓度(10mg/L)情况下,加入适当催化剂(10g/L)时,光催化的效果最佳,可达到65.1%。40371 毕业论文关键词:沉积-沉淀法;甲基橙;BiOI/CNTs;复合光催化剂;降解作用
Research on The Degradation of Azo Dyes by New Type of Composite Photocatalysis Materials
Abstract: By the deposition-precipitation method BiOI and BiOI/CNTs composite photocatalyst. With X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) samples were characterized by photocatalysis. Azo dyes methyl orange as the research object, simulated sunlight visible, research BiOI/CNTs degradation of methyl orange. In this study, univariate analysis under other conditions remain unchanged, namely to change the concentration, exposure time and amount of catalyst, and then measuring the absorbance at different reaction conditions, the degradation rate was calculated. Studies show that: in the case of simulation of visible light, at low concentration (10mg/L), the addition of a suitable catalyst (10g/L), the photocatalytic best, can reach 65.1%.
Keywords: deposition-precipitation method; methyl orange; BiOI/CNTs; composite photocatalyst; degradation
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