Kinetics-controlled synthesis of gold–silver nanosheets with abundant in-plane cracking and their trimetallic derivatives for plasmon-enhanced catalysis

Zheng, Yiqun; Zhang, Gongguo; Ma, Yanyun; Kong, Yuhan; Liu, Feng; Liu, Maochang

doi:10.1039/d1ce01505b

Cited by 7 publications

(4 citation statements)

References 69 publications

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“…In parallel, multi‐componential NMNs are prepared by mixing two or more noble metals in solid solutions, resulting in diverse nanostructures such as binary (e.g., AuAg, [ 11 ] AgPt, [ 12 ] AuPt, [ 13 ] AuPd, [ 14 ] and PdRu [ 15 ] ), ternary (e.g., AuAgPd, [ 16 ] AuPtAg, [5d] AuPtRu, [ 17 ] and AuPtPd [ 18 ] ) and multinary (e.g., PtPdRhRuCu) systems [5e] . The performance and application of these NMNs are greatly influenced by their size, shape, morphology, and composition.…”

Section: Noble Metal Nanomaterialsmentioning

confidence: 99%

Nano‐bio‐interface: Unleashing the Potential of Noble Nanometals

Guo,

Wang,

Cui

et al. 2024

Small Science

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Engineered noble metal nanomaterials (NMN) possess adjustable optical, electrical, and biocompatible properties that make them excellent tools for probing the nano‐bio‐interface. Understanding their interactions with biomolecules, cells, and tissues at the nano‐bio‐interface is crucial in designing these nanomaterials for biomedical applications. This review summarizes the structure, properties, synthesis, and passivation methods of noble metal nanoparticles, as well as the construction strategy and detection technology of the nano‐bio‐interface to provide important information about their uptake, distribution, metabolism, and degradation in vivo and in vitro. The related action mechanisms include the kinetic and thermodynamic processes of the nano‐bio‐interface, the driving forces for its formation, and the chemical reactions at the nano‐bio‐interface. By exploring the action mechanism of the nano‐bio‐interface, the antibacterial properties and cytotoxicity of NMN could be better understood, and open up more extensive biological applications. Finally, the future trends of NMNs in the biological field and the challenges encountered in realizing these technologies are discussed.

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Section: Noble Metal Nanomaterialsmentioning

confidence: 99%

Nano‐bio‐interface: Unleashing the Potential of Noble Nanometals

Guo,

Wang,

Cui

et al. 2024

Small Science

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“…With such unique architecture, the restacking/agglomeration issue can be perfectly handled without losing the effective surface area . In addition, if the building block of nanosheets can be created with abundant in-plane holes/cracking, more active surface sites can be supplied, further enhancing the atomic exposure and utilization efficiency. − …”

Section: Introductionmentioning

confidence: 99%

Construction of Ultrathin CuAuAg Nanosheet-Assembled Three-Dimensional Nanoflowers for Photothermal Conversion and Electrocatalytic Hydrogen Evolution

Liang,

Kong,

Min

et al. 2024

ACS Appl. Nano Mater.

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Ultrathin two-dimensional (2D) nanostructures, with superhigh exposure of the under-coordinated metal atoms relative to large-sized quasi-spherical particles or bulk counterparts, have shown enormous potential to enhance various heterogeneous catalytic reactions. The creation of in-plane holes and rational assembling of ultrathin 2D nanosheets into 3D hierarchical architectures can prevent the restacking issue of nanosheets, thereby providing more active sites by hampering atomic diffusion, nearby nanosheet aggregation, and thermodynamic structural reform. Herein, we report the stepwise construction of ultrathin CuAuAg nanosheet-assembled 3D nanoflowers (NFs). The synthesis involves the conversion of Au@Cu x O mesoporous nanospheres into CuAg NFs, followed by a controlled galvanic replacement reaction with chloroauric acid to create holes and manipulate the atomic ratio between Cu, Au, and Ag. With strong broad-spectrum light absorption across the UV−vis region, the current CuAuAg NFs exhibited satisfactory photothermal conversion under Xe lamp irradiation. When serving as HER electrocatalysts, the Cu 10.5 Au 58.4 Ag 31.1 NFs displayed the optimized performance in terms of overpotential and activity, surpassing the Cu 71.4 Ag 28.6 NFs and Au NCs, which is supported by DFT simulations, showcasing the multimetallic coupling advantage for HER. This study presents a viable route to construct trimetallic 3D hierarchical nanostructures and validates their application in photothermal conversion and electrocatalytic HER, guiding the design of high-performance photosensitizers and electrocatalysts.

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“…Finally, a facile and large-scale synthesis method should be available to afford the use of the nanomaterial for fabricating the nanocomposite electrode . Recently, noble-metal branched nanosheets have been studied. , We believe that such nanomaterials with unusual morphologies can provide opportunities for the stretchable bioelectrodes.…”

mentioning

confidence: 99%

“…43 Recently, noble-metal branched nanosheets have been studied. 44,45 We believe that such nanomaterials with unusual morphologies can provide opportunities for the stretchable bioelectrodes.…”

mentioning

confidence: 99%

Facile and Scalable Synthesis of Whiskered Gold Nanosheets for Stretchable, Conductive, and Biocompatible Nanocomposites

et al. 2022

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Noble metal nanomaterials have been studied as conductive fillers for stretchable, conductive, and biocompatible nanocomposites. However, their performance as conductive filler materials is far from ideal because of their high percolation threshold and low intrinsic conductivity. Moreover, the difficulty in large-scale production is another critical hurdle in their practical applications. Here we report a method for the facile and scalable synthesis of whiskered gold nanosheets (W-AuNSs) for stretchable, conductive, and biocompatible nanocomposites and their application to stretchable bioelectrodes. W-AuNSs show a lower percolation threshold (1.56 vol %) than those of gold nanoparticles (5.02 vol %) and gold nanosheets (2.74 vol %), which enables the fabrication of W-AuNS-based stretchable nanocomposites with superior conductivity and high stretchability. Addition of platinum-coated W-AuNSs (W-AuNSs@Pt) to the prepared nanocomposite significantly reduces the impedance and improved charge storage capacity. Such enhanced performance of the stretchable nanocomposite enables us to fabricate stretchable bioelectrodes whose performance is demonstrated through animal experiments including electrophysiological recording and electrical stimulation in vivo.

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Kinetics-controlled synthesis of gold–silver nanosheets with abundant in-plane cracking and their trimetallic derivatives for plasmon-enhanced catalysis

Abstract: Controlled synthesis of two-dimensional noble metal nanomaterials with in-plane branching morphology has been of great research interest recently, which yet achieves limited success for AuAg-based nanocrystals. Herein, we report the...

Cited by 7 publications

References 69 publications

Nano‐bio‐interface: Unleashing the Potential of Noble Nanometals

Nano‐bio‐interface: Unleashing the Potential of Noble Nanometals

Construction of Ultrathin CuAuAg Nanosheet-Assembled Three-Dimensional Nanoflowers for Photothermal Conversion and Electrocatalytic Hydrogen Evolution

Facile and Scalable Synthesis of Whiskered Gold Nanosheets for Stretchable, Conductive, and Biocompatible Nanocomposites

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