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用熔融分相法制备Ti O2光催化材料的原理基于通过调节分相结构控制析晶尺寸。本文重点研究在制备过程中热处理条件对玻璃分相与Ti O2析晶及光催化效果的影响。试样的组成选在Na2O-B2O3-Si O2-Ti O2体系的分相区域,1300℃熔融,在不同的温度下进行热处理,经酸处理后得到负载于富硅多孔玻璃的纳米Ti O2光催化材料。结果表明为使分相尺寸与Ti O2析晶速度相匹配,获得最佳的光催化效率,对不同组成的试样热处理条件以575~600℃/12h为宜。
The principle of the Ti02 photocatalytic material prepared by the melt-phase separation method is based on controlling the size of the crystallites by adjusting the phase separation structure. This article focuses on the influence of heat treatment conditions on the phase separation of glass and the crystallization of Ti O2 and the photocatalytic activity in the preparation process. The composition of the sample is selected in the phase separation region of Na2O-B2O3-Si O2-Ti O2 system and melted at 1300 ° C, and then heat-treated at different temperatures. The nano-Ti O2 photocatalyst material. The results show that the optimal photocatalytic efficiency is obtained in order to match the phase separation and the Ti O2 crystallization rate. The heat treatment conditions of the specimens with different compositions are 575 ~ 600 ℃ / 12h.