Biosynthesized silver nanorings as a highly efficient and selective electrocatalysts for CO<sub>2</sub> reduction

Pan, Yani; Paschoalino, Waldemir J.; Bayram, Serene S.; Blum, Amy Szuchmacher; Mauzeroll, Janine

doi:10.1039/c9nr04464g

Cited by 14 publications

(6 citation statements)

References 55 publications

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“…The results have shown that the size distribution of NPs is uniform and particle agglomeration was avoided. The same group also synthesized Ag nanorings surrounding the outer surface of TMV cp by a fast photoreduction method [47,99] . Ag precursors were first incubated with protein in water at room temperature.…”

Section: Bio‐templates For the Synthesis Of Mnmsmentioning

confidence: 99%

“…In the available literature, bio‐templated MNMs are rarely used in CO 2 RR, which gives future opportunity to explore such an application. Very recently, our group reported the first example of using biosynthesized Ag nanorings for CO 2 RR [99] . A mixture of AgNO 3 and the disk assembly of TMV coat protein was illuminated by UV light, resulting in Ag nanorings assembled on the outer surface of the protein.…”

Section: Applications Of Bio‐templated Mnms For Different Electrocatamentioning

confidence: 99%

“…Compared to bulk silver and silver NPs prepared by a chemical reduction method, the nanorings exhibited enhanced overpotential, CO faradaic efficiency (FE) and long‐time stability (Figure 28). It was believed that the improved performance was related to the numerous functional groups on the protein such as arginine and thiol groups, which might influence the binding energies of the intermediates of the CO 2 RR and/or the side reaction HER [99] …”

Section: Applications Of Bio‐templated Mnms For Different Electrocatamentioning

confidence: 99%

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Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

et al. 2020

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Developing metallic nanocatalysts with high reaction activity, selectivity and practical durability is a promising and active subfield in electrocatalysis. In the classical “bottom‐up” approach to synthesize stable nanomaterials by chemical reduction, stabilizing additives such as polymers or organic surfactants must be present to cap the nanoparticle to prevent material bulk aggregation. In recent years, biological systems have emerged as green alternatives to support the uncoated inorganic components. One key advantage of biological templates is their inherent ability to produce nanostructures with controllable composition, facet, size and morphology under ecologically friendly synthetic conditions, which are difficult to achieve with traditional inorganic synthesis. In addition, through genetic engineering or bioconjugation, bio‐templates can provide numerous possibilities for surface functionalization to incorporate specific binding sites for the target metals. Therefore, in bio‐templated systems, the electrocatalytic performance of the formed nanocatalyst can be tuned by precisely controlling the material surface chemistry. With controlled improvements in size, morphology, facet exposure, surface area and electron conductivity, bio‐inspired nanomaterials often exhibit enhanced catalytic activity towards electrode reactions. In this Review, recent research developments are presented in bio‐approaches for metallic nanomaterial synthesis and their applications in electrocatalysis for sustainable energy storage and conversion systems.

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Section: Bio‐templates For the Synthesis Of Mnmsmentioning

confidence: 99%

Section: Applications Of Bio‐templated Mnms For Different Electrocatamentioning

confidence: 99%

Section: Applications Of Bio‐templated Mnms For Different Electrocatamentioning

confidence: 99%

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Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

et al. 2020

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“…Noble-metal nanoparticles (NPs) are one of the most well-studied nanomaterials because of their well-controlled preparation − and attractive catalytic − and optical properties, − which originate from their plasmonic properties. Plasmons are collective oscillations of free electrons under irradiation.…”

Section: Introductionmentioning

confidence: 99%

Two-Step Synthesis of Large Gold–Silver Alloy Nanoparticles via the Combination of Seeded Growth and Citrate Co-reduction

Situ,

Bayram,

Blum

2023

J. Phys. Chem. C

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We report a novel two-step method for the synthesis of uniform quasi-spherical and monodisperse gold–silver alloy nanoparticles with diameters of approximately 80 nm. In step one, gold–silver alloy seeds (G0) with diameters of approximately 30 nm are synthesized by citrate co-reduction of gold acetate and silver nitrate. In step two, the seeds grow into large alloy nanoparticles with diameters of approximately 80 nm by the combination of seeded growth and citrate co-reduction of gold and silver precursors. Our method makes use of gold acetate (rather than chloroauric acid) as a gold precursor to avoid the formation of silver chloride precipitates during synthesis. To our knowledge, we are the first to prepare gold–silver alloy nanoparticles with diameters of above 70 nm using gold acetate as a gold precursor. The alloy seeds and seed-grown nanoparticles show good control of size and composition, which enables tuning of the plasmonic band of these gold–silver alloy nanoparticles. Gold and silver are distributed uniformly within the cores of all Au-Ag alloy nanoparticles, while the surface is enriched in silver. This silver-enriched surface layer is thicker and more prominent for 25% Au alloy nanoparticles than for 50% and 75% Au alloy nanoparticles.

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“…[ 18–20 ] A series of Ag‐based nanowires (Ag‐NWs) has been prepared as electrocatalysts for CO 2 ‐to‐CO reduction, which achieved high Faradaic efficiencies (FEs), mostly due to the increased electrochemically active surface area. [ 21–23 ] Mauzeroll and coworkers biosynthesized Ag‐based nanorings (Ag‐NRs), which could reach an FE of 95.0% for the conversion of CO 2 to CO. [ 24 ] Polyansky's group reported a Ag nanocoral catalyst with a high surface area, displaying a low overpotential of 0.37 V and high current efficiency of 95% for CO 2 ‐to‐CO reduction catalysis. [ 25 ] In addition, some other nanoporous Ag‐based (np‐Ag) catalysts with diverse nanostructures have also been investigated for electrochemically reducing CO 2 to CO with significantly enhanced catalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Graphdiyne‐Stabilized Silver Nanoparticles as an Efficient Electrocatalyst for CO₂ Reduction

Xie

Zhang

et al. 2021

Adv Energy and Sustain Res

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Electrochemical CO2 reduction reaction (e‐CO2RR) into high‐value chemicals is a promising approach for sustainable energy research, but there remains a great challenge to develop efficient and stable catalysts. Herein, in situ synthesized uniform Ag nanoparticles (AgNPs) directly growing on the surface of 2D graphdiyne (GDY) for selectively reducing CO2 to CO with high efficiency and stability are reported. Due to the special electronic distribution of GDY, it not only serves as a template for the growth of AgNPs to prevent its aggregation, but also increases active sites and transformation of electrons through the intimate interaction between phase interface to enhance their cooperative catalytic effect, which highly improves the electrocatalytic performance of the nanocomposite. Through investigations, it is found that the Ag/GDY/CC nanocomposite electrochemically reduces CO2 to CO with Faraday efficiency up to 92.1% and current density of 25.74 mA/cm2 at the potential of −1.3 V versus reversible hydrogen electrode (RHE). Meanwhile, during catalysis, the Ag/GDY/CC composite maintains excellent stability with a high current density of ≈26 mA/cm2 (threefold higher than that of Ag/CC), unchanged for over 24 h. To the best knowledge, herein, the first experimental study of an efficient CO2 reduction electrocatalyst based on GDY is represented.

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Biosynthesized silver nanorings as a highly efficient and selective electrocatalysts for CO₂ reduction

Abstract: Numerous amino acids on protein effectively enhance the reaction activity and selectivity for CO2 electroreduction to CO.

Cited by 14 publications

References 55 publications

Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

Two-Step Synthesis of Large Gold–Silver Alloy Nanoparticles via the Combination of Seeded Growth and Citrate Co-reduction

Graphdiyne‐Stabilized Silver Nanoparticles as an Efficient Electrocatalyst for CO₂ Reduction

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Biosynthesized silver nanorings as a highly efficient and selective electrocatalysts for CO2 reduction

Abstract: Numerous amino acids on protein effectively enhance the reaction activity and selectivity for CO2 electroreduction to CO.

Cited by 14 publications

References 55 publications

Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

Recent Advances in Bio‐Templated Metallic Nanomaterial Synthesis and Electrocatalytic Applications

Two-Step Synthesis of Large Gold–Silver Alloy Nanoparticles via the Combination of Seeded Growth and Citrate Co-reduction

Graphdiyne‐Stabilized Silver Nanoparticles as an Efficient Electrocatalyst for CO2 Reduction

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Biosynthesized silver nanorings as a highly efficient and selective electrocatalysts for CO₂ reduction

Graphdiyne‐Stabilized Silver Nanoparticles as an Efficient Electrocatalyst for CO₂ Reduction