Electrodeposited Ag catalysts for the electrochemical reduction of CO 2 to CO

Ham, Yu Seok; Choe, Senyon; Kim, Myung Joon; Lim, Taeho; Kim, Soo-Kil; Kim, Jae Jeong

doi:10.1016/j.apcatb.2017.02.040

Cited by 131 publications

(88 citation statements)

References 63 publications

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“…[69,76] It was also reported that structure, morphology,s ize, and compositionoft he catalystcan lead to adsorption and decoupling site preferences of different adsorbates of Cb ound on the surfacea nd further result in the breakingo ft he linear scaling relationships and tuning of the adsorption strength, eventually exertingadramatici nfluence on the ECR performance. [69,77,78] Indeed, in addition to polycrystalline and single-crystalline Ag, some new At ypes have been developed and characterized recently,s uch as nanostructured Ag with different sizes, [79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94] supported Ag catalysts with different substrates including C, TiO 2 ,A l 2 O 3 , [95][96][97] dopant-aided Ag, [98-120, 129, 130] oxide-derived Ag, [121][122][123][124][125][126][127][128] and surface-modified Ag. [131][132][133][134] In principle, the reduction of NP size can enhancet he surface reactivity of nanomaterials by either directly affecting the atomic arrangement, such as ratio of the atoms at the edge, corner, or surface, or amplifying the effects of other structural factors such as defects, resulting in the tuning of BEs of intermediates and transition states on catalyst surfaces.…”

Section: Size Effectmentioning

confidence: 99%

“…Indeed, the impact of both particles ize and nanomorphology of Ag electrocatalysts has been widely reported for selectiveE CR to CO in literature. [69,[76][77][78][84][85][86][87][88][89][90][91][92][93][94]…”

Section: Size Effectmentioning

confidence: 99%

“…[87] Ham et al synthesized a dendrite-type Ag catalyst by using the electrodeposition method( Figure 4d). [88] Due to its unique geometrica nd electronic structures,t his dendrite-type Ag catalyst displayed a 60.81 %F Eo fC Oa tap otentialo fÀ0.45 Vv s. RHE in the ECR to CO in 0.5 m KHCO 3 .S pecifically,b oth the higher ratio of Ag(220)/Ag(111)a nd the more negative chemicals hift for the dendrite-type Ag electrode were favorable for the enhancement of the electrocatalytic performance (Figure 4f). [88] In another example, at hree dimensional (3D) porous Ag foam was synthesized by dealloying of aA g-Al precursor,w hich demonstrated good catalytic performances for the selectiveE CR to CO with aF Eo fC Oa sh igh as 94.7 %a nd ah igh current density up to 10.8 mA cm À2 at ac onstant potential of À0.99 Vv s. RHE.…”

Section: Morphology Tuningmentioning

confidence: 99%

“…Copyright 2015,American Chemical Society; (c) Tri-Ag-NPs, Reproduced with permissionfrom ref [86]. Copyright 2017, American Chemical Society;a nd (d) dendrite-type Ag, Reproduced with permission from ref [88]. Copyright 2017,E lsevier;(e) CO current efficiency vs. internal-resistance(iR)-corrected potentials on Ag nanocorals (red sphere), Ag NPs (hollow blue triangle), and Ag foil (hollow black square), Reproduced with permission from Ref [85].…”

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confidence: 99%

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Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

et al. 2019

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The selective electrochemical CO2 reduction (ECR) to CO in aqueous electrolytes has gained significant interest in recent years due to its capability to mitigate the environmental issues associated with CO2 emission and to convert renewable energy such as wind and solar power into chemical energy as well as its potential to realize the commercial use of CO2. In view of the thermodynamic stability and kinetic inertness of CO2 molecules, the exploitation of active, selective, and stable catalysts for the ECR to CO is crucial to promote the reaction efficiency. Indeed, plenty of electrocatalysts for the selective ECR to CO have been explored, of which Ag is known as the most promising electrocatalyst for large‐scale ECR to CO due to several competitive advantages including high catalytic performance, low price, and rich reserves compared with other metal counterparts. To provide useful guidelines for the further development of efficient catalysts for the ECR to CO, a comprehensive summary of the recent progress of Ag‐based electrocatalysts is presented in this Review. Different modification strategies of Ag‐based electrocatalysts are highlighted, including exposure of crystal facets, tuning of morphology and size, introduction of support materials, alloying with other metals, and surface modification with functional groups. The reaction mechanisms involved in these different modification strategies of Ag‐based electrocatalysts are also discussed. Finally, the prospects for the development of next‐generation Ag‐based electrocatalysts are proposed in an effort to facilitate the industrialization of ECR to CO.

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Section: Size Effectmentioning

confidence: 99%

Section: Size Effectmentioning

confidence: 99%

Section: Morphology Tuningmentioning

confidence: 99%

mentioning

confidence: 99%

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Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

et al. 2019

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“…These conductivity materials have been observed to have excellent electrical conductivity, wide surface area, and greatly enhance the performance of electrochemical sensor. In order to avoid these problems, the conductive material used in this study was a three-dimensional silver nanodendrites: it has the advantages of low cost and simple preparation [26,27]. In addition, single metal nanomaterials, such as Au and Ag nanoparticles, can not meet the experiment requirement directly, researchers therefore often combine them with other nanomaterials, including molybdenum disulfide and graphene oxide to enhance its conductivity and expand its specific surface areas.…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on Silver Nanodendrites and Molecularly Imprinted Polymers for the Determination of Tetrabromobisphenol A in Water

Zhang

Wang³

et al. 2018

Electroanalysis

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A novel and facile electrochemical sensor based on three different modification layers was prepared to detect tetrabromobisphenol A (TBBPA). They included tetracyanoquinodimethane (TCNQ), silver nanodendrites (AgNDs) and molecularly imprinted polymers (MIPs). TCNQ− acts as inducer can be reacted with Ag+ to form Ag‐TCNQ fibers and then constructed the nanodendritic structures. The latter two modification layers were synthesized on electrode by‐ways of electrodeposition and electropolymerization respectively. AgNDs has excellent conductivity and large specific surface area, which has good potential to be used as a bridge between electrode and MIPs. It can considerably improve the sensitivity of the sensor and provide immense deposit sites to pyrrole. MIPs synthesized using electropolymerization can firmly get attach on electrode, thereby, providing polymers with stable imprinted cavities and having the possibility to be reused. Under optimum conditions, the concentration of TBBPA exhibited an excellent linear relationship between 5.0×10−9 and 1.0×10−5 mol L−1, with a limit of dectection of 2.54×10−10 mol L−1 (S/N=3). The reproducibility of the sensor was observed to be 3.42 % and was immune to analogues. Finally the sensor was successfully applied to actual water samples.

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Hydroxypillar[5]arene‐Confined Silver Nanocatalyst for Selective Electrochemical Reduction of CO₂ to Ethanol

Qin

Wang

Zhai

et al. 2023

Adv Funct Materials

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CO is usually the dominant product on silver-based catalysts in electrochemical CO 2 reduction reaction (CO 2 RR) possibly due to weak *CO adsorption. In this report, a hydroxypillar[5]arene-extended porous polymer-confined silver catalyst (PAF-PA5-Ag-0.8) for electrochemical CO 2 RR which can selectively produce ethanol with a maximum Faradaic efficiency of 55% at 11 mA cm −1 is described. The study reveals that the hydroxypillar[5]arene-confined Ag clusters are the active sites for ethanol formation. Moreover, temperature-programmed desorption measurements demonstrate an enhanced adsorption strength of CO* on PAF-PA5-Ag-0.8 compared with that on commercial Ag nanoparticles, which is favored by the C-C coupling to form ethanol. The density functional theory study indicates that the confined Ag clusters in PAF-PA5-Ag-0.8 contribute to high C 2 selectivity in CO 2 RR through facilitating *COOH formation, stabilizing *CO intermediates, and inhibiting hydrogen evolution. This work provides a new design strategy by modulating *CO adsorption strength on non-copper electrocatalysts in converting CO 2 into "green" C 2 products.

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Electrodeposited Ag catalysts for the electrochemical reduction of CO 2 to CO

Cited by 131 publications

References 63 publications

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

A Novel Electrochemical Sensor Based on Silver Nanodendrites and Molecularly Imprinted Polymers for the Determination of Tetrabromobisphenol A in Water

Hydroxypillar[5]arene‐Confined Silver Nanocatalyst for Selective Electrochemical Reduction of CO₂ to Ethanol

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Electrodeposited Ag catalysts for the electrochemical reduction of CO 2 to CO

Cited by 131 publications

References 63 publications

Rational Design of Ag‐Based Catalysts for the Electrochemical CO2 Reduction to CO: A Review

Rational Design of Ag‐Based Catalysts for the Electrochemical CO2 Reduction to CO: A Review

A Novel Electrochemical Sensor Based on Silver Nanodendrites and Molecularly Imprinted Polymers for the Determination of Tetrabromobisphenol A in Water

Hydroxypillar[5]arene‐Confined Silver Nanocatalyst for Selective Electrochemical Reduction of CO2 to Ethanol

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Product

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About

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

Rational Design of Ag‐Based Catalysts for the Electrochemical CO₂ Reduction to CO: A Review

Hydroxypillar[5]arene‐Confined Silver Nanocatalyst for Selective Electrochemical Reduction of CO₂ to Ethanol