Shuttle-like core-shell gold nanorod@Ag-Au nanostructures: Shape control and electrocatalytic activity for formaldehyde oxidation

Li, Dongxiang; Zhang, Xiaofang; Zhu, Jie; Wu, Chunxing; Zheng, Taoran; Li, Chunfang; Cao, Meiwen

doi:10.1016/j.apsusc.2020.146935

Cited by 19 publications

(13 citation statements)

References 84 publications

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“…[30] Using gold nanorod/silver (AuNR@Ag) nanostructures, Li et al investigated the factors controlling shuttle-like shapes, showing that the residual Au precursor is crucial to the formation (Figure 5b). [84] The peaks in the forward scan most likely reflect electrochemical oxidation catalyzed by monometallic Ag or Au atoms, and a low-potential peak near −0.1 V reflects an oxidation reaction catalyzed by adjacent Ag and Au atoms. Khalaf et al prepared Cu x Ni (1−x) Fe 2 O 4 NPs (CuNFNPs) in KOH electrolytes using combustion and calcination, which were used as the catalysts for the AOR in an alkaline medium (Figure 5c).…”

Section: Oxidation Of Aldehydesmentioning

confidence: 99%

Section: Advanced Electrocatalysis For Anodic Reactionsmentioning

confidence: 99%

“…By overgrowing surfactant‐assisted template AuNRs, Li et al created AuNR@Ag with nanostructures with rod‐like or boat‐like forms. [ 84 ] The Ag shell is grown on unpurified AuNRs with glycine added in the second step, resulting in an AuNR@Ag nanostructure with dumbbell‐like or shuttle‐like forms and the ratio of Au to Ag in the shell development solution can be adjusted easily. [ 100 ] The catalyst AuNR@Ag‐Au nanostructures exhibit excellent electrochemical performances toward HMFOR.…”

Section: Advanced Electrocatalysis For Anodic Reactionsmentioning

confidence: 99%

mentioning

confidence: 99%

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Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

et al. 2022

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Electro-organic synthesis has attracted a lot of attention in pharmaceutical science, medicinal chemistry, and future industrial applications in energy storage and conversion. To date, there has not been a detailed review on electro-organic synthesis with the strategy of heterogeneous catalysis. In this review, the most recent advances in synthesizing value-added chemicals by heterogeneous catalysis are summarized. An overview of electrocatalytic oxidation and reduction processes as well as paired electrocatalysis is provided, and the anodic oxidation of alcohols (monohydric and polyhydric), aldehydes, and amines are discussed. This review also provides in-depth insight into the cathodic reduction of carboxylates, carbon dioxide, C=C, C≡C, and reductive coupling reactions. Moreover, the electrocatalytic paired electro-synthesis methods, including parallel paired, sequential divergent paired, and convergent paired electrolysis, are summarized. Additionally, the strategies developed to achieve high electrosynthesis efficiency and the associated challenges are also addressed. It is believed that electro-organic synthesis is a promising direction of organic electrochemistry, offering numerous opportunities to develop new organic reaction methods.

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Section: Oxidation Of Aldehydesmentioning

confidence: 99%

Section: Advanced Electrocatalysis For Anodic Reactionsmentioning

confidence: 99%

Section: Advanced Electrocatalysis For Anodic Reactionsmentioning

confidence: 99%

mentioning

confidence: 99%

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Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

et al. 2022

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“…First, NS possesses strong electromagnetic (EM) field enhancement with sharp tips coupled with a large extinction cross section [ 31 ], which could exhibit a strong plasmonic response and mediating ability. Second, under different synthesis conditions, such as the Ag + /Au 3+ ratio, temperature, and pH, the morphology and size of NS could easily be altered to control the plasmonic properties [ 32 , 33 ]. Additionally, the SPR peak is made flexible by changing the aspect ratio of the original AuNR [ 31 ], which is conducive to intense interaction with optical waves in order to improve the compatibility and modulation efficiency of NS in plasmon-based optical systems.…”

Section: Introductionmentioning

confidence: 99%

Au-Ag Alloy Nanoshuttle Mediated Surface Plasmon Coupling for Enhanced Fluorescence Imaging

Xie

Fang

et al. 2022

Biosensors

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Surface plasmon-coupled emission (SPCE), a novel signal enhancement technology generated by the interactions between surface plasmons and excited fluorophores in close vicinity to metallic film, has shown excellent performance in bioimaging. Variable-angle nanoplasmonic fluorescence microscopy (VANFM), based on an SPCE imaging system, can selectively modulate the imaging depth by controlling the excitation angles. In order to further improve the imaging performance, Au-Ag alloy nanoshuttles were introduced into an Au substrate to mediate the plasmonic properties. Benefiting from the strong localized plasmon effect of the modified SPCE chip, better imaging brightness, signal-to-background ratio and axial resolution for imaging of the cell membrane region were obtained, which fully displays the imaging advantages of SPCE system. Meanwhile, the imaging signal obtained from the critical angle excitation mode was also amplified, which helps to acquire a more visible image of the cell both from near- and far-field in order to comprehensively investigate the cellular interactions.

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A Direct Formaldehyde Fuel Cell for CO₂‐Emission Free Co‐generation of Electrical Energy and Valuable Chemical/Hydrogen

Yang

Ahmad

et al. 2023

Angewandte Chemie

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Converting carbon‐based molecular fuels into electricity efficiently and cleanly without emitting CO2 remains a challenge. Conventional fuel cells using noble metals as anode catalysts often suffer performance degradation due to CO poisoning and a host of problems associated with CO2 production. This study provides a CO2‐emission‐free direct formaldehyde fuel cell. It enables a flow of electricity while producing H2 and valuable formate. Unlike conventional carbon‐based molecules electrooxidation, formaldehyde 1‐electron oxidation is performed on the Cu anode with high selectivity, thus generating formate and H2 without undergoing CO2 pathway. In addition, the fuel cell produces 0.62 Nm3 H2 and 53 mol formate per 1 kWh of electricity generated, with an open circuit voltage of up to 1 V and a peak power density of 350 mW cm−2. This study puts forward a zero‐carbon solution for the efficient utilization of carbon‐based molecule fuels that generates electricity, hydrogen and valuable chemicals in synchronization.

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Shuttle-like core-shell gold nanorod@Ag-Au nanostructures: Shape control and electrocatalytic activity for formaldehyde oxidation

Cited by 19 publications

References 84 publications

Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

Au-Ag Alloy Nanoshuttle Mediated Surface Plasmon Coupling for Enhanced Fluorescence Imaging

A Direct Formaldehyde Fuel Cell for CO₂‐Emission Free Co‐generation of Electrical Energy and Valuable Chemical/Hydrogen

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Shuttle-like core-shell gold nanorod@Ag-Au nanostructures: Shape control and electrocatalytic activity for formaldehyde oxidation

Cited by 19 publications

References 84 publications

Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

Electro‐Synthesis of Organic Compounds with Heterogeneous Catalysis

Au-Ag Alloy Nanoshuttle Mediated Surface Plasmon Coupling for Enhanced Fluorescence Imaging

A Direct Formaldehyde Fuel Cell for CO2‐Emission Free Co‐generation of Electrical Energy and Valuable Chemical/Hydrogen

Contact Info

Product

Resources

About

A Direct Formaldehyde Fuel Cell for CO₂‐Emission Free Co‐generation of Electrical Energy and Valuable Chemical/Hydrogen