Thermal synthesis of Cu@carbon spherical core–shell structures from carbonaceous matrices containing embedded copper particles

Li, Haibo; Kang, Wenjun; Xi, Baojuan; Yan, Yan; Bi, Huiyun; Zhu, Yongchun; Qian, Yitai

doi:10.1016/j.carbon.2009.09.063

Cited by 46 publications

(29 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…9,10 Over the years, a series of intriguing materials have been put into the design of such core-shell nanocatalyst systems with some specic merits. 11,12 To name a few, wrapping Au NPs within mesoporous silica shells to endow them with high activity and outstanding stability even under harsh conditions; 13 coating metal-organic frameworks onto the surface of Au NPs to enhance the catalytic activity through a synergistic effect;…”

mentioning

confidence: 99%

Enhanced catalytic application of Au@polyphenol-metal nanocomposites synthesized by a facile and green method

et al. 2014

View full text Add to dashboard Cite

Development of novel nanostructure gold-based catalysts with high performance and low cost is of a great scientific interest. Here, a new controllable coordination coating was facilely integrated onto gold nanoparticles (Au NPs) using low-cost natural polyphenols and ferric ions. Heat treatment, organic solvents, special instruments, or additive chemicals were not involved in the whole synthetic procedure. Due to the presence of the unique polyphenol-Fe 3+ shell, the as-prepared catalyst showed an improved catalytic performance, pH-responsive character and good stability towards the reduction of 4-NP.Noble metal NPs have received enormous interest in a wide variety of applications, especially in heterogeneous catalysis owing to their large specic surface areas and increased number of exposed metal atoms, which greatly change their catalytic and physicochemical properties. 1,2 Among them, Au NPs have been proved to exhibit extraordinary performance in a number of oxidation and reduction reactions.3-5 However, Au NPs in catalytic reactions oen show a strong tendency to aggregate because of their high surface energies, leading to the loss of their initial activities.6 Hence, core-shell architectures with a noble metal core preserved by an outer shell have recently attracted a great deal of attention for catalysis due to the following structural advantages: (a) the shell can hinder the aggregation of neighboring cores 7,8 and (b) remarkable catalytic activity may be achieved due to the unique identity of the shell or the interaction of the shell and the core.9,10 Over the years, a series of intriguing materials have been put into the design of such core-shell nanocatalyst systems with some specic merits.11,12 To name a few, wrapping Au NPs within mesoporous silica shells to endow them with high activity and outstanding stability even under harsh conditions; 13 coating metal-organic frameworks onto the surface of Au NPs to enhance the catalytic activity through a synergistic effect;14 encapsulating Au NPs within stimuli-responsive polymers to tune the mass transport of reactants and thus modulate the catalytic process.15 However, the above-mentioned synthetic procedures oen suffer from sophisticated and time-consuming steps and requirement of various toxic reagents, which may be impediments for some practical applications. Accordingly, a concise, facile and environmentally friendly approach should be developed to obtain a novel core-shell Au catalytic system with distinct performance. Polyphenols (PPs), which are commonly distributed in plant tissues to serve diverse biological roles, represent a wide range of physicochemical natures and thereby give rise to broad chemical versatility in industrial, pharmacological, biomedical, and food additive applications. 16,17 The dominant constituents for virtually all PPs are catechol and galloyl, which are known to possess strong metal chelation ability and materials surface binding affinity. 18,19 Recently, researchers found that catechol units and catechol ferric ion co...

show abstract

mentioning

confidence: 99%

Enhanced catalytic application of Au@polyphenol-metal nanocomposites synthesized by a facile and green method

et al. 2014

View full text Add to dashboard Cite

show abstract

“…[13][14][15]. Until now, various routes including the most popular arc-discharge technique have been reported for the synthesis of the carbon-coated metals [16].…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of luminescent carbon dots and carbon-coated metal particles: Two birds with one stone

Zhang

Yang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

“…Such graphene-supported metal nanoparticle (M-NP) hybrid materials may find applications as chemical sensors [9], as electrodes for fuel cells [10][11][12], in catalysis [13][14][15][16], or for hydrogen storage materials [17]. Metal-nanoparticles on carbon materials are of recent interest for optoelectronics [18][19][20][21][22][23][24], and are known for FeCo [25], Cu [18], Ag [26,27], Au [19,27], Pt [22,27], Ru [28], or Pd-NPs [28] [28].…”

Section: Introductionmentioning

confidence: 99%

Hybrid materials of platinum nanoparticles and thiol-functionalized graphene derivatives

Marquardt

Beckert

Pennetreau

et al. 2014

Carbon

View full text Add to dashboard Cite

Thermal synthesis of Cu@carbon spherical core–shell structures from carbonaceous matrices containing embedded copper particles

Cited by 46 publications

References 32 publications

Enhanced catalytic application of Au@polyphenol-metal nanocomposites synthesized by a facile and green method

Enhanced catalytic application of Au@polyphenol-metal nanocomposites synthesized by a facile and green method

Green synthesis of luminescent carbon dots and carbon-coated metal particles: Two birds with one stone

Hybrid materials of platinum nanoparticles and thiol-functionalized graphene derivatives

Contact Info

Product

Resources

About