{"title":"Bimetallic Bi-In nanoparticles for efficient production of formate via electrocatalytic conversion of CO2","authors":"Chenyang Mo, Chan Yang, Yarong Hu, Juan Peng","doi":"10.1007/s10008-024-06042-x","DOIUrl":null,"url":null,"abstract":"<div><p>Electrocatalytic reduction of CO<sub>2</sub> to valuable chemicals can alleviate the energy crisis and reduce the greenhouse effect. Herein, bimetallic Bi<sub>x</sub>In<sub>y</sub> (x, y is percentage composition) nanoparticles (NPs) were successfully prepared and utilized as electrocatalysts for electrochemical conversion of CO<sub>2</sub> to formate. By changing the Bi/In atom ratio and varying the amount of surfactant PVP and solvent DMF, the surface morphology of and the electronic structure of Bi<sub>x</sub>In<sub>y</sub> catalysts can be optimized. The optimized Bi<sub>88.77</sub>In<sub>11.23</sub> NPs were the most favorable for formate formation and the FE (Faradaic efficiency) of formate reached 94.29% at a potential of − 1.0 V (vs. RHE). The DFT calculations confirmed that the synergistic effect of bimetallic and dense nanoparticle structures promotes the adsorption of CO<sub>2</sub> molecules and major <sup>*</sup>OCHO intermediates at active sites, thus accelerating the reaction rate. The Bi<sub>88.77</sub>In<sub>11.23</sub> NPs were further employed as cathode coupling oxygen evolution reaction to construct a two-electrode electrolysis system (CO<sub>2</sub>RR‖OER). The whole electrolysis needed a low cell voltage of 3.4 V to deliver 10 mA/cm<sup>2</sup>. This study will provide an efficient approach to enhance the activity and selectivity for CO<sub>2</sub>RR by the synergistic effect of bimetal.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-024-06042-x","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
Electrocatalytic reduction of CO2 to valuable chemicals can alleviate the energy crisis and reduce the greenhouse effect. Herein, bimetallic BixIny (x, y is percentage composition) nanoparticles (NPs) were successfully prepared and utilized as electrocatalysts for electrochemical conversion of CO2 to formate. By changing the Bi/In atom ratio and varying the amount of surfactant PVP and solvent DMF, the surface morphology of and the electronic structure of BixIny catalysts can be optimized. The optimized Bi88.77In11.23 NPs were the most favorable for formate formation and the FE (Faradaic efficiency) of formate reached 94.29% at a potential of − 1.0 V (vs. RHE). The DFT calculations confirmed that the synergistic effect of bimetallic and dense nanoparticle structures promotes the adsorption of CO2 molecules and major *OCHO intermediates at active sites, thus accelerating the reaction rate. The Bi88.77In11.23 NPs were further employed as cathode coupling oxygen evolution reaction to construct a two-electrode electrolysis system (CO2RR‖OER). The whole electrolysis needed a low cell voltage of 3.4 V to deliver 10 mA/cm2. This study will provide an efficient approach to enhance the activity and selectivity for CO2RR by the synergistic effect of bimetal.
期刊介绍:
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.