文献类型：期刊文献

英文题名：Construction of 3D Ordered Honeycomb Films with Controllable Pores as Efficient Catalytic Supports

作者：Yang, Xiaoyan[1];Jin, Haibao[1];Yao, Yuan[1];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：32

期号：40

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20223212532769);WOS:【SCI-EXPANDED(收录号:WOS:000835844000001)】；

基金：This work was supported by the National Natural Science Foundation of China (52073092, 22001071, and 51873061). Support by Shanghai Scientific and Technological Innovation Projects (19JC1411700, and 18JC1410802) is also much appreciated.

语种：英文

外文关键词：3D ordered porous films; azobenzene polymers; breath figure techniques; nanocatalysis; photomanipulation

摘要：The facile construction of 3D porous film using the breath figure technique is critically important in diverse practical applications. However, the discovery of easy synthetic methods and preparation of stimuli-responsive 3D ordered nano-/micro-architectures remain challenging. Herein, the promotive breath figure technique is presented to construct 3D honeycomb porous films on curved substrates using an azobenzene-containing copolymer. The nanopore size of honeycomb structure decreases gradually with the increase of surface curvature, due to the different solvent drying speeds. Upon irradiation with directional linear polarization light, the round-shaped nanopores are converted into rectangular- and rhombic-shaped nanopores under different polarization directions. Moreover, these porous films are employed as substrates to load various metal nanoparticles, successfully preparing the nanocomposites. The catalytic capacity of both control and these nanocomposites are evaluated using the NaBH4-mediated reduction reaction from 4-nitrophenol to 4-aminophenol. Compared to the control and nonporous films, the porous films with smaller nanopores exhibit larger catalytic activity. Additionally, UV irradiation upon the nanocomposites promotes the catalytic action, due to the change in surface hydrophilicity caused by the photoisomerization of azobenzene. Recyclable use of nanocomposites demonstrates the high stability. This research provides an innovative strategy to prepare 3D curved porous films for potential on catalysis.