高分散型钇修饰氧化铋纳米材料的制备及其可见光降解染料研究

发布时间：2018-05-08 22:17

本文选题：Y-BiO + 炭吸附　；参考：《无机盐工业》2017年05期

【摘要】：利用炭黑吸附-沉淀法,以Y_2O_3和Bi_2O_3为原料制备钇修饰的Y-Bi_2O_3纳米材料,通过改变制备条件(焙烧温度)调节材料的性质。研究结果表明:炭黑的添加抑制了晶粒在焙烧过程中的聚集长大,促进了Bi_2O_3晶相由α相向β相结构的转变,形成具有较大比表面积、较小粒径和高分散性的材料,改善了材料的光吸收性质,因而增强了其光催化降解甲基橙的活性。Y~(3+)具有可变价态,可以捕获光生e~--h~+形成Y~(2+)/Y~(4+),且可调节表面酸碱性,从而提高光催化活性。此外,对光催化降解甲基橙的反应机理也做了研究。
[Abstract]:Yttrium modified Y-Bi_2O_3 nanomaterials were prepared by carbon black adsorption-precipitation method using Y_2O_3 and Bi_2O_3 as raw materials. The properties of Y-Bi_2O_3 nanomaterials were adjusted by changing the preparation conditions (calcination temperature). The results showed that the addition of carbon black inhibited the agglomeration and growth of grains during calcination, promoted the transformation of Bi_2O_3 crystal phase from 伪 phase to 尾 phase, and formed materials with large specific surface area, small particle size and high dispersion. The photoabsorption properties of the materials were improved, and the activity of photocatalytic degradation of methyl orange. In addition, the mechanism of photocatalytic degradation of methyl orange was also studied.
【作者单位】：内蒙古科技大学化学与化工学院;
【基金】：内蒙古自然科学基金-博士基金(2014BS0204) 内蒙古自治区高等学校科学研究项目(NJZY14163) 内蒙古科技大学创新基金-科研启动基金项目(2014QDL029)
【分类号】：TQ135.32

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