文献类型：期刊文献

英文题名：Solvothermal synthesis of stable nanoporous polymeric bases-crystalline TiO2 nanocomposites: visible light active and efficient photocatalysts for water treatment

作者：Liu, Fujian[1,2];Kong, Weiping[1];Wang, Liang[2];Noshadi, Iman[3];Zhang, Zhonghua[3];Qi, Chenze[1]

机构：[1]Shaoxing Univ, Dept Chem, Key Lab Alternat Technol Fine Chem Proc Zhejiang, Shaoxing 312000, Peoples R China;[2]Zhejiang Univ, Dept Chem, Hangzhou 310028, Peoples R China;[3]Univ Connecticut, Dept Chem & Biomol Engn, Storrs, CT 06269 USA

年份：2015

卷号：26

期号：8

外文期刊名：NANOTECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000349244600022)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (21203122); the Postdoctoral Foundation of China (2012M520062, Bsh1201018); the Foundation of State Key Laboratory of Magnetic Resonance and Atomic, Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences (T151303); and the Foundation of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University (2013-12).

语种：英文

外文关键词：basic nanoporous polymers; TiO2 nanocrystals; photocatalysis; visible light response; band gap

外文摘要：Visible light active and stable nanoporous polymeric base-crystalline TiO2 nanocomposites were solvothermally synthesized from in situ copolymerization of divinylbenzene (DVB) with 1vinylimidazolate (VI) or 4-vinylpyridine (Py) in the presence of tetrabutyl titanate without the use of any other additives (PDVB-VI-TiO2-x, PDVB-Py-TiO2-x, where x stands for the molar ratio of TiO2 to VI or Py), which showed excellent activity with respect to catalyzing the degradation of organic pollutants of p-nitrophenol (PNP) and rhodamine-B (RhB). TEM and SEM images show that PDVB-VI-TiO2-x and PDVB-Py-TiO2-x have abundant nanopores, and TiO2 nanocrystals with a high degree of crystallinity were homogeneously embedded in the PDVB-VI-TiO2-x and PDVB-Py-TiO2-x, forming a stable ` brick-and-mortar' nanostructure. PDVB-VI and PDVB-Py supports act as the glue linking TiO2 nanocrystals to form nanopores and constraining the agglomeration of TiO2 nanocrystals. XPS spectra show evidence of unique interactions between TiO2 and basic sites in these samples. UV diffuse reflectance shows that PDVB-VI-TiO2-x and PDVB-Py-TiO2-x exhibit a unique response to visible light. Catalytic tests show that the PDVB-VI-TiO2-x and PDVB-Py-TiO2-x were active in catalyzing the degradation of PNP and RhB organic pollutants under visible light irradiation. The enhanced activities of the PDVB-VI-TiO2-x and PDVB-Py-TiO2-x were ascribed to synergistic effects between abundant nanopores and the unique optical adsorption of visible light in the samples.