以净化电厂尾气为目标，设计含吸附剂的光电催化剂和带太阳能电池板及紫外灯的光催化反应器，进行协同光催化同步氧化Hg和NO，着重解决以下问题：(1)通过吸附和光电催化相结合，克服NO和Hg难氧化，提高光催化效率；(2) 同步氧化Hg和NO产生易溶于水的Hg(NO3)2,可避免生成的NO2在被吸收时产生的NO引起二次污染和难溶于水的HgO覆盖光催化剂导致失活；(3)通过太阳能电池板可把过剩光转化为电能，一方面可驱动光电催化，另一方面，可开启紫外灯，把太阳光转化为短波长紫外光源，提高光催化活性，并在夜间提供紫外灯光照，实现全天候光催化。主要研究内容包括新材料设计、结构裁剪和表面化学修饰以及构效关系阐述,光催化反应器设计和多技术匹配优化，NO和Hg同步光催化氧化光生电子和空穴的综合利用、 吸附与光催化以及光电催化的协同效应研究等，期望发展光催化技术和创新光催化理论，为大气污染控制开辟新途径

Power plants release a great amount of NO and Hg in sweep gas due to combustion of nitrogen or Hg compounds in coals and the direct combination reaction between N2 and O2 in air at high temperature, which may cause severe damage of the ecological banlance, society development and human body health.. The traditional technologies for removing NO and Hg, including adsorption, microbion technology, catalytic reduction, decomposition and oxidation, usually display disadvantages of high cost and secondary pollution. Photocatalytic oxidation of Hg and NO to easily recyclable NO2 and HgO is promising way for cleaning sweep gas owing to the low cost and less secondary pollution. However, some key probplems should be considered. (1) The Hg and NO are very stable against oxidation, especially at very low concentration, leading to poor phtocatalytic efficiencies.(2) The oxidation of Hg results in HgO, which will cover the photocatalysts and thus decrease their activity. (3) The NO oxidation mainly produces NO2. When it is adsorbed in water, NO will be re-produced, which will obviously reduce the photocatalytic efficiency and also cause the secondary pollution in air. (4) In the daytime, the efficiency of using solar lights is very poor. However, in the night, the photocatalysis can not proceed due to the absence of light irradiation. .This proposal addresses the design and application of novel photocatalysts combined with both adsorption and electrocatalysis and new reactors contained both solar batteries and UV lamps for synchronical removal of NO and Hg in sweep gas of power plants. The adsorbent can rapidly fix and enrich NO and Hg from gas, followed by photocatalytic oxidation. The electrophotocatalysis may greatly enhance the pohotocatalytic efficiency even at very low bias voltage (< 0.4 V). Meanwhile, the synchronical Hg and NO oxidation results in Hg(NO3)2, which can be easily recycled by water washing. It can avoid the formation of NO2 ang HgO,and thus may diminish secondary pollution of NO from NO2 adsorption in water and also avoid the photocatalyst deactivation due to HgO coverage. Futhermore, the batteries can transfer the excess solar energy to electricity, which can drive the electrophotocatalysis and also turn on the UV lights for promoting photocatalytic activities by transfering the sunlights into UV lights and also realizing round-the-clock photocatalytic oxidation of NO and Hg by supplying UV light irradiation in night. .This research involves in materials, photocatalysis,and reaction engineering, all of which are covered by Li and Zhang groups. The two groups have been involved in this collaborative effort for about one year. The team effort can push it forward at a level exceeding that possible for group alone.