Enhanced CO2 reduction activity of polyethylene glycol-modified Au nanoparticles prepared via liquid medium sputtering

Chung, Min Wook; Young, In; Ha, Min Gwan; Na, Youngseung; Hwang, Jungsoo; Ham, Hyung Chul; Kim, Hyoung‐Juhn; Henkensmeier, Dirk; Yoo, Sung Jong; Kim, Jin Young; Lee, So Young; Park, Hyun S.; Jang, Jong Hyun

doi:10.1016/j.apcatb.2018.06.022

Cited by 37 publications

(15 citation statements)

References 44 publications

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“…Thus, a sputtering system composed of multiple targets for alloy formation would be ideal. Sputtering onto poly(ethylene glycol) (PEG, MW = 600) − is considered to be one of the green methods of synthesizing NPs with the desired properties. For example, we recently demonstrated that PEG can be used to stabilize Pt NPs, Pt/Cu, and Pd/Cu alloy NPs. ,, However, the preparation of Pt/Au alloy NPs using dual-target sputter deposition of Pt and Au bulk metals onto PEG has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

et al. 2020

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Pt/Au alloy nanoparticles (NPs) in a wide composition range have been synthesized by room-temperature simultaneous sputter deposition from two independent magnetron sources onto liquid PEG (MW = 600). The prepared NPs were alloyed with the face-centered cubic (fcc) structure. In addition, the particle sizes, composition, and shape are strongly correlated but can be tailored by an appropriate variation of the sputtering parameters. No individual particle but large agglomerates with partial alloy structure formed at Pt content of less than 16 atom %. Highly dispersed NPs with no agglomeration were observed in PEG when the quantity of Pt is more than 26 atom %. On the other hand, a small amount of Pt could terminate the agglomeration of Au when sputtering on the grids for transmission electron microscope observation. Our experiment and computer simulation carried out by two different methods indicate that the composition-dependent particle size of Pt/Au can be explained by the atomic concentration, formation energy of the cluster, and interaction between different metal atoms and the PEG molecule.

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Section: Introductionmentioning

confidence: 99%

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

et al. 2020

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“…An interesting approach for the synthesis of Pt/Cu bimetallic NPs by sputtering onto TiO 2 nanotube arrays was described by Farsinezhad et al However, as far as we know, the synthesis of Pt/Cu alloy NPs by sputtering onto a liquid has not been reported yet. Different types of liquid matrices, such as ionic liquids, ,,− , polymers, ,,,− silicone oil, and vegetable oil, can be considered for the preparation of Pt/Cu alloy NPs by sputtering. Recently, liquid PEG, a biocompatible and economic polymer, has been proven to be a useful medium for the synthesis of Pt NPs via sputtering with negligible aggregation.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer

et al. 2019

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We use a green sputtering technique to deposit a Pt/Cu alloy target on liquid polyethylene glycol (PEG) to obtain well-dispersed and stable Pt29Cu71 alloy nanoparticles (NPs). The effects of sputtering current, rotation speed of the stirrer, sputtering time, sputtering period, and temperature of PEG on the particle size are studied systematically. Our key results demonstrate that the aggregation and growth of Pt/Cu alloy NPs occurred at the surface as well as inside the liquid polymer after the particles landed on the liquid surface. According to particle size analysis, a low sputtering current, high rotation speed for the stirrer, short sputtering period, and short sputtering time are found to be favorable for producing small-sized single crystalline alloy NPs. On the other hand, varying the temperature of the liquid PEG does not have any significant impact on the particle size. Thus, our findings shed light on controlling NP growth using the newly developed green sputtering deposition technique.

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“…Because of the intrinsic properties of each material, the selectivity of products from the CO 2 RR mainly depends on the initial catalyst materials. In this context, noble metals such as Au, Ag, and Pd have been the most rational choice for electrocatalysts in CO production. These noble metals have been extensively studied as representative model catalysts for CO production, to develop new strategies for high performance and to understand fundamental reaction mechanisms.…”

Section: Noble Metal Based Electrocatalystsmentioning

confidence: 99%

Progress in development of electrocatalyst for CO₂ conversion to selective CO production

et al. 2019

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The conversion of carbon dioxide (CO2) to valuable fuels and chemicals offers a new pathway for sustainable and clean carbon fixation. Recently, the focus has been on electrochemical CO2 reduction on heterogeneous electrode catalysts, leading to remarkable achievements in the reaction performance. To date, CO2 to carbon monoxide (CO) conversion is considered as the most promising candidate reaction for the industrial market, owing to its high efficiency and reasonable technoeconomic feasibility. Moreover, CO has been proposed as a key intermediate species for further reduced hydrocarbons, which can pave the way for various fuel production. This study sets out to describe recent progress on the electrochemical CO2 reduction to CO in a heterogeneously catalyzed system. The review includes understanding of the catalytic material employed and engineering strategies implemented by adjusting the binding energy of key adsorbates. These material design approaches, such as nanostructuring, alloying, doping, and so forth, have pioneered breakouts in the intrinsic catalytic nature of transition metal elements. Moreover, recent advances in systematic design are summarized, with focus on practical industrial applications. Finally, perspectives on the design of electrocatalyst materials for CO production by electrochemical CO2 reduction are presented.

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Enhanced CO2 reduction activity of polyethylene glycol-modified Au nanoparticles prepared via liquid medium sputtering

Cited by 37 publications

References 44 publications

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer

Progress in development of electrocatalyst for CO₂ conversion to selective CO production

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Enhanced CO2 reduction activity of polyethylene glycol-modified Au nanoparticles prepared via liquid medium sputtering

Cited by 37 publications

References 44 publications

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid

Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer

Progress in development of electrocatalyst for CO2 conversion to selective CO production

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Progress in development of electrocatalyst for CO₂ conversion to selective CO production