Self-organized macroporous thin carbon films for supported metal catalysis

被引：28

作者：

Mondal, Kunal ^{[1
]}

Kumar, Jitendra ^{[1
]}

Sharma, Ashutosh ^{[1
]}

机构：

[1] Indian Inst Technol Kanpur, Dept Chem Engn, Kanpur 208016, Uttar Pradesh, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2013年 / 427卷

关键词：

Macroporous carbon film; Thin porous polymer film; Dewetting; Silver/carbon composite; Silver nanoparticle; Para-nitrophenol reduction; SILVER NANOPARTICLES; GOLD NANOPARTICLES; AU NANOPARTICLES; REDUCTION; NANOFIBERS; AG; NANOTUBES; PLATINUM; CLUSTERS; NANOCOMPOSITES;

D O I：

10.1016/j.colsurfa.2013.03.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An easy one step and scalable process for the synthesis of multilayer macroporous polymer and carbon films is demonstrated by using spin coated thin films of polyacrylonitrile (PAN) in N,N-dimethyl formamide (DMF) solvent followed by their carbonization. The interconnected porous carbon films were characterized by various techniques including SEM, HRTEM, Raman, XRD, BET and AFM. Phase-separation/dewetting in sub-micrometer thick films spontaneously produced a macroporous (pore diameter >50 nm) polymer films with hole density in the range of 10(8)-10(9) per cm(2) and BET area of similar to 175 m(2)/g. Increased porosity can be tailored under the conditions that favor greater destabilization of the spin coated films such as reduced film thickness, higher evaporation rate and lower viscosity. Further, Ag/carbon hybrid films were prepared by incorporation of a silver salt in the solution prior to spin coating. The Ag/carbon porous films show good activity in the reduction of para-nitrophenol to para-aminophanol with sodium borohydride. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：83 / 94

页数：12

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