Cao Yuping, Liu Wei, Qian Jing, Cao Ting, Wang Jiemin, Qin Wenwu
Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China.
Chem Asian J. 2019 Aug 16;14(16):2883-2888. doi: 10.1002/asia.201900477. Epub 2019 Jul 30.
Three novel chemically stable porous organic polymers (POPs) were synthesized by the hydrothermal method; the POPs contain sulfone bonds (TpSD), no sulfur atoms (TpMD), or thioether bonds (TpTD). The catalytic mechanism of the POP with sulfone bonds was studied, and it was found that the wide visible light absorption range, high specific surface area, and the hydrophilicity of the material significantly promoted the catalytic efficiency of TpSD. The presence of O=S=O gives TpSD a higher degree of conjugation than TpMD and TpTD, so TpSD shows the strongest UV/Visible absorption and faster transmission of electrons. The photocatalytic degradation of Rhodamine B (RhB) molecules is approximately 100 % with TpSD and its pseudo-first-order rate constant is 0.0770 min , which is the highest among all reported non-metallic photocatalysts. Moreover, it is also the first time that sulfur-containing polymer have been used in photocatalytic degradation of dyes.
通过水热法合成了三种新型化学稳定的多孔有机聚合物（POPs）；这些POPs含有砜键（TpSD）、不含硫原子（TpMD）或硫醚键（TpTD）。研究了含砜键的POP的催化机理，发现其宽可见光吸收范围、高比表面积以及材料的亲水性显著提高了TpSD的催化效率。O=S=O的存在使TpSD比TpMD和TpTD具有更高的共轭程度，因此TpSD表现出最强的紫外/可见光吸收和更快的电子传输。使用TpSD对罗丹明B（RhB）分子的光催化降解率约为100%，其准一级速率常数为0.0770 min，这在所有报道的非金属光催化剂中是最高的。此外，含硫聚合物首次用于染料的光催化降解。
