NDLI: Surfactant-assisted morphological tuning of porous metallic silver sponges: facile synthesis, characterization and catalytic performance

Content Provider	Springer Nature Link
Author	Sheikh, Mehraj Ud Din Naikoo, Gowhar Ahmad Thomas, Molly Ba, Mustri Khan, Farid
Copyright Year	2015
Abstract	Nanoporous sponges have many advantages over bulk catalyst structures in terms of providing regular framework of pores and conformational stability. In this paper, precise tuning of porosity and surface morphology in silver sponges for the catalytic reduction of p-nitro phenol to p-amino phenol was explored. The silver spongy catalysts are reusable and stable. The porous catalysts were characterized before calcination by FTIR and TGA and after calcination by XRD, SEM and BET techniques. Catalytic performance of the silver sponges was confirmed by spectrophotometric technique, and it was concluded that the porosity and adsorption capability of silver sponges were responsible for their outstanding catalytic performance.The calcined silver monoliths displayed a potential catalytic activity against the reduction of 4-nitrophenol which is a serious environmental pollutant to 4-aminophenol which is an important intermediate in the synthesis of various analgesic and antipyretic drugs. Fig. (a)–(e) Time-dependent successive UV–vis spectra showing the reduction of 4-nitrophenol catalyzed by 0.06 mg of different silver monolith catalysts (a) Ag/Triton X-100, (b) Ag/Triton X-100/dextran, (c) Ag/Triton X-100/TMB, (d) Ag/Triton X-100/Ludox (HF treated). (e) Plots of A/A$_{0}$ versus time of different Ag monoliths for catalytic reduction of 4-nitrophenol (A) Ag/Triton X-100 (B) (C) Ag/Triton X-100/dextran Ag/Triton X-100/TM (D) Ag/Triton X-100/Ludox (HF treated).
Starting Page	572
Ending Page	581
Page Count	10
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	76
Issue Number	3
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2015-07-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Porous materials Triton X-100 Ag monoliths Catalysis Reusability Ceramics, Glass, Composites, Natural Methods Inorganic Chemistry Optical and Electronic Materials Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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