Self-organized macroporous thin carbon films for supported metal catalysis

Kunal Mondal; Jitendra Kumar; Ashutosh Sharma

doi:10.1016/j.colsurfa.2013.03.024

Self-organized macroporous thin carbon films for supported metal catalysis

Kunal Mondal, Jitendra Kumar, Ashutosh Sharma

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

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>50nm) polymer films with hole density in the range of 10⁸-10⁹percm² and BET area of ~175m²/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.

Original language	English
Pages (from-to)	83-94
Number of pages	12
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	427
DOIs	https://doi.org/10.1016/j.colsurfa.2013.03.024
State	Published - Jun 2013
Externally published	Yes

Funding

This work was supported by the DST Unit of Excellence on Soft Nanofabrication from the Department of Science and Technology, New Delhi, India .

Funders	Funder number
Department of Science and Technology, Ministry of Science and Technology, India
Department of Science and Technology, Government of Kerala

Keywords

Dewetting
Macroporous carbon film
Para-nitrophenol reduction
Silver nanoparticle
Silver/carbon composite
Thin porous polymer film

Access to Document

10.1016/j.colsurfa.2013.03.024

Cite this

@article{5fa7a1a6976441b3bab256bd5d9a1863,

title = "Self-organized macroporous thin carbon films for supported metal catalysis",

abstract = "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>50nm) polymer films with hole density in the range of 108-109percm2 and BET area of ~175m2/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.",

keywords = "Dewetting, Macroporous carbon film, Para-nitrophenol reduction, Silver nanoparticle, Silver/carbon composite, Thin porous polymer film",

author = "Kunal Mondal and Jitendra Kumar and Ashutosh Sharma",

year = "2013",

month = jun,

doi = "10.1016/j.colsurfa.2013.03.024",

language = "English",

volume = "427",

pages = "83--94",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

issn = "0927-7757",

publisher = "Elsevier",

}

TY - JOUR

T1 - Self-organized macroporous thin carbon films for supported metal catalysis

AU - Mondal, Kunal

AU - Kumar, Jitendra

AU - Sharma, Ashutosh

PY - 2013/6

Y1 - 2013/6

N2 - 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>50nm) polymer films with hole density in the range of 108-109percm2 and BET area of ~175m2/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.

AB - 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>50nm) polymer films with hole density in the range of 108-109percm2 and BET area of ~175m2/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.

KW - Dewetting

KW - Macroporous carbon film

KW - Para-nitrophenol reduction

KW - Silver nanoparticle

KW - Silver/carbon composite

KW - Thin porous polymer film

UR - http://www.scopus.com/inward/record.url?scp=84876330441&partnerID=8YFLogxK

U2 - 10.1016/j.colsurfa.2013.03.024

DO - 10.1016/j.colsurfa.2013.03.024

M3 - Article

AN - SCOPUS:84876330441

SN - 0927-7757

VL - 427

SP - 83

EP - 94

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Self-organized macroporous thin carbon films for supported metal catalysis

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this