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以钛酸四丁酯(TBOT)为钛源,Fe(NO3)3为Fe3+掺杂源,通过两步反应制得Fe3+掺杂二氧化钛(Fe3+/TiO2)。甲基橙的太阳光催化降解实验结果表明,n(Fe3+)/n(Ti)为0.5%,焙烧温度450℃条件下制备的Fe3+/TiO2具有较高的光催化活性,150min后降解率达到81.7%,约为未掺杂TiO2的1.41倍。SEM测试表明,Fe3+/TiO2晶粒主要呈八面体形。XRD结果表明,Fe3+/TiO2为锐钛矿相,焙烧温度超过450℃时晶粒明显增大。紫外-可见漫反射吸收光谱显示,相比单纯TiO2,Fe3+/TiO2对可见光的响应显著增强。
Fe3 + -doped titania (Fe3 + / TiO2) was prepared via a two-step reaction using tetrabutyl titanate (TBOT) as the titanium source and Fe (NO3) 3 as the Fe3 + dopant. The experimental results of photocatalytic degradation of methyl orange showed that the photocatalytic activity of Fe3 + / TiO2 prepared under the conditions of n (Fe3 +) / n (Ti) 0.5% and calcination temperature 450 ℃ was 81.7 %, About 1.41 times that of undoped TiO2. SEM test showed that the Fe3 + / TiO2 grains are mainly octahedral shape. XRD results show that the Fe3 + / TiO2 anatase phase, the calcination temperature exceeds 450 ℃ significantly increased grain size. The UV-Vis diffuse reflectance spectra showed that the response of Fe3 + / TiO2 to visible light was significantly higher than that of pure TiO2.