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以硫酸和氨水为原料，以乙醇为分散剂，采用化学沉淀法合成了超细多孔ＴｉＯ２，并详细考察了ｐＨ值和反应温度对ＴｉＯ２前驱体结构的影响．多孔ＴｉＯ２随着焙烧温度的提高，比表面有所降低，导致这一现象的原因是晶粒生长及相转变．从孔分布曲线分析可知，２００℃得到样品的一部分微孔，在较高温度的焙烧过程中被烧结，得到了孔分布更为均匀的多孔粉体，由ＴＥＭ照片可清晰看到多孔ＴｉＯ２的空间网络结构
Using sulfuric acid and ammonia as raw materials, ethanol as dispersant, the chemical precipitation was used to synthesize ultrafine porous TiO2. The effects of pH value and reaction temperature on the structure of TiO2 precursor were investigated in detail. As the calcination temperature increases, the specific surface area of porous TiO2 decreases. The reason for this phenomenon is the grain growth and phase transformation. From the pore distribution curve analysis, it can be seen that a part of the micropores of the sample are obtained at 200 ° C, and are sintered during calcination at a higher temperature to obtain a porous powder with a more even distribution of pores. TEM images clearly show the porous TiO2 Network structure