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DeNovo Synthesis of Gold-Nanoparticle-Embedded, Nitrogen-Doped Nanoporous Carbon Nanoparticles (Au@NC) with Enhanced Reduction Ability

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/64467

Title: DeNovo Synthesis of Gold-Nanoparticle-Embedded, Nitrogen-Doped Nanoporous Carbon Nanoparticles (Au@NC) with Enhanced Reduction Ability
Authors: Liao, Yu-Te Browse this author
Chen, Jeffrey E. Browse this author
Isida, Yohei Browse this author
Yonezawa, Tetsu Browse this author →KAKEN DB
Chang, Wei-Chen Browse this author
Alshehri, Saad M. Browse this author
Yamauchi, Yusuke Browse this author
Wu, Kevin C. -W. Browse this author
Keywords: gold
nanoparticles
nanoporous carbon
reduction
zeolitic imidazolate framework-8
Issue Date: 6-Feb-2016
Publisher: Wiley-Blackwell
Journal Title: ChemCatChem
Volume: 8
Issue: 3
Start Page: 502
End Page: 509
Publisher DOI: 10.1002/cctc.201501020
Abstract: A denovo synthesis of gold-nanoparticle-embedded, nitrogen-doped nanoporous carbon nanoparticles (Au@NC) was investigated in this work. Chloroauroic acid was encapsulated inside zeolitic imidazolate framework-8 (ZIF-8) nanoparticles during the synthesis and later reduced into gold nanoparticles. The as-synthesized gold-nanoparticle-embedded ZIF-8 (Au@ZIF-8) was then carbonized into Au@NC to enhance the stability of the nanoporous support. The results show that Au@NC exhibits a porous structure containing 3wt% of gold. 2-Methylimidazole provided an abundant amount of nitrogen (19wt%) on the carbon matrix, which resulted in a hydrophilic and positively charged surface that is useful for the reduction of 4-nitrophenol. The results of the catalytic reaction indicate that synthesized Au@NC could act as an effective catalyst with a turnover frequency (TOF) of 1185g(-1)s(-1), which is higher than that of conventional naked Au nanoparticles (TOF: 339g(-1)s(-1)) and that of Au nanoparticles on activated carbon (TOF: 89g(-1)s(-1)). We propose that the enhanced performance of Au@NC resulted from homogeneous distribution of Au nanoparticles along with the hydrophilic and positively charged nitrogen-doped carbon surface.
Rights: This is the accepted version of the following article: DeNovo Synthesis of Gold-Nanoparticle-Embedded, Nitrogen-Doped Nanoporous Carbon Nanoparticles (Au@NC) with Enhanced Reduction Ability. ChemCatChem, 8(3):502-509.,which has been published in final form at http://dx.doi.org/10.1002/cctc.201501020.
Type: article (author version)
URI: http://hdl.handle.net/2115/64467
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 米澤 徹

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