用IR、Raman和DRS光谱研究了SO2 -4 /TiO2 光催化剂和TiO2 光催化剂的光谱行为差别。结果表明 ,TiO2 光催化剂的表面只有L酸中心 ,而SO2 -4 /TiO2 光催化剂表面既有L酸中心也有B酸中心。TiO2 的硫酸化有效地抑制了晶相转变和晶粒度的增加。与TiO2 相比 ,SO2 -4 /TiO2 光催化剂的锐钛矿相含量较多、晶粒较小、光谱吸收边蓝移 ,从而增大了光吸收阈值 ,增强了光生空穴和电子的氧化及还原能力。 The spectral behavior of SO2-4 / TiO2 photocatalysts and TiO2 photocatalysts was investigated by IR, Raman and DRS spectroscopy. The results show that the surface of TiO2 photocatalyst only L acid center, and SO2 -4 / TiO2 photocatalyst surface both L acid center and B acid center. Sulfation of TiO2 effectively suppresses the crystal phase transformation and the grain size increase. Compared with TiO2, the content of anatase phase of SO2-4 / TiO2 photocatalyst is larger, the crystal grains are smaller, and the absorption edge of the spectrum is blue-shifted, thereby increasing the light absorption threshold, enhancing the oxidation of photogenerated holes and electrons and Restore ability.