Construction of 3D Ordered Honeycomb Films with Controllable Pores as Efficient Catalytic Supports

Xiaoyan Yang; Haibao Jin; Yuan YaoShaoliang Lin

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Construction of 3D Ordered Honeycomb Films with Controllable Pores as Efficient Catalytic Supports

机译：Construction of 3D Ordered Honeycomb Films with Controllable Pores as Efficient Catalytic Supports

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The facile construction of 3D porous film using the breath figure technique iscritically important in diverse practical applications. However, the discoveryof easy synthetic methods and preparation of stimuli-responsive 3D orderednano-/micro-architectures remain challenging. Herein, the promotive breathfigure technique is presented to construct 3D honeycomb porous films oncurved substrates using an azobenzene-containing copolymer. The nanoporesize of honeycomb structure decreases gradually with the increase of surfacecurvature, due to the different solvent drying speeds. Upon irradiationwith directional linear polarization light, the round-shaped nanopores areconverted into rectangular- and rhombic-shaped nanopores under differentpolarization directions. Moreover, these porous films are employed as substratesto load various metal nanoparticles, successfully preparing the nanocomposites.The catalytic capacity of both control and these nanocompositesare evaluated using the NaBH_4-mediated reduction reaction from 4-nitrophenolto 4-aminophenol. Compared to the control and nonporous films, theporous 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 photoisomerizationof azobenzene. Recyclable use of nanocomposites demonstrates the highstability. This research provides an innovative strategy to prepare 3D curvedporous films for potential on catalysis.

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来源
《Advanced functional materials》 |2022年第40期|2202298.1-2202298.6|共6页
作者
Xiaoyan Yang; Haibao Jin; Yuan YaoShaoliang Lin;
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作者单位

Shanghai Key Laboratory of Advanced Polymeric MaterialsKey Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology130 Meilong Road, Shanghai 200237, P. R. China;

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正文语种英语
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3D ordered porous films; azobenzene polymers; breath figure techniques; nanocatalysis; photomanipulation;

Construction of 3D Ordered Honeycomb Films with Controllable Pores as Efficient Catalytic Supports

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