TiO2光催化氧化剂的改性技术研究进展

光催化氧化法是一种新型高级氧化技术，已成为环境治理中的前沿领域及研究热点。由于该方法目前存在光催化剂效率低、氧化剂难于分离和光能有效利用率低等不足之处在水处理工业化中受到限制，大多处于实验室研究阶段。文中就复合半导体催化剂、TiO2催化剂表面酸化、催化剂染料光敏化、纳米光催化剂及催化剂中沉积贵金属和掺杂金属离子等能有效改善TiO2光催化剂催化性能，提高光催化氧化效率的改进技术进行探讨。

Research progress on modification of TiO2 photocatalyst

As a novel advanced oxidation technology, photocatalytic oxidation has become the frontier field and a research hotspot in environment protection. However, as the said technology exists many disadvantages such as low efficiency of photocatalyst, hard-separatable oxidant and low utilization of solar energy, it is limited in water treatment industria-lization and still at the experimental stage at most time. The modification technologies that can effectively improve the catalytic performance and the oxidation efficiency of TiO2 photocatalyst including： compound semiconductors catalyst, surface acidification, photosensitive of dye, nano-TiO2 photocatalyst, noble metal deposition and metal ion doping in photocatalyst and so on were discussed.