Effect of halides on nanoporous Zn-based catalysts for highly efficient electroreduction of CO2 to CO

Dang Le Tri Nguyen; Michael Shincheon Jee; Da Hye Won; Hyung Suk Oh; Byoung Koun Min; Yun Jeong Hwang

doi:10.1016/j.catcom.2018.06.020

Effect of halides on nanoporous Zn-based catalysts for highly efficient electroreduction of CO₂ to CO

Dang Le Tri Nguyen, Michael Shincheon Jee, Da Hye Won, Hyung Suk Oh, Byoung Koun Min, Yun Jeong Hwang

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

The effects of halide ions (F⁻, Cl⁻, Br⁻, or I⁻) on nanoporous Zn-based electrocatalysts were assessed. All catalysts in the presence of halides exhibited high electrocatalytic performances of CO₂ reduction reaction (CO₂RR) and efficient suppression of hydrogen evolution reaction (HER) with a maximum Faradaic efficiency of up to 97%. The increasing adsorption strength from F⁻ to I⁻ is proposed to form more porous structures and higher oxidized Zn species, thus facilitating the protonation of CO₂ and stabilizing the adsorbed intermediates induced by charge donation from the adsorbed halides on Zn surface to CO₂, enhance CO₂RR and simultaneously suppress HER.

Original language	English
Pages (from-to)	109-113
Number of pages	5
Journal	Catalysis Communications
Volume	114
DOIs	https://doi.org/10.1016/j.catcom.2018.06.020
Publication status	Published - 2018 Aug 1

Keywords

CO production
CO reduction reaction
Electrochemical surface area
Halide ion
Zn-based catalyst

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Process Chemistry and Technology

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Nguyen, D. L. T., Jee, M. S., Won, D. H., Oh, H. S., Min, B. K., & Hwang, Y. J. (2018). Effect of halides on nanoporous Zn-based catalysts for highly efficient electroreduction of CO₂ to CO. Catalysis Communications, 114, 109-113. https://doi.org/10.1016/j.catcom.2018.06.020

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abstract = "The effects of halide ions (F−, Cl−, Br−, or I−) on nanoporous Zn-based electrocatalysts were assessed. All catalysts in the presence of halides exhibited high electrocatalytic performances of CO2 reduction reaction (CO2RR) and efficient suppression of hydrogen evolution reaction (HER) with a maximum Faradaic efficiency of up to 97%. The increasing adsorption strength from F− to I− is proposed to form more porous structures and higher oxidized Zn species, thus facilitating the protonation of CO2 and stabilizing the adsorbed intermediates induced by charge donation from the adsorbed halides on Zn surface to CO2, enhance CO2RR and simultaneously suppress HER.",

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author = "Nguyen, {Dang Le Tri} and Jee, {Michael Shincheon} and Won, {Da Hye} and Oh, {Hyung Suk} and Min, {Byoung Koun} and Hwang, {Yun Jeong}",

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AU - Nguyen, Dang Le Tri

AU - Jee, Michael Shincheon

AU - Won, Da Hye

AU - Oh, Hyung Suk

AU - Min, Byoung Koun

AU - Hwang, Yun Jeong

PY - 2018/8/1

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AB - The effects of halide ions (F−, Cl−, Br−, or I−) on nanoporous Zn-based electrocatalysts were assessed. All catalysts in the presence of halides exhibited high electrocatalytic performances of CO2 reduction reaction (CO2RR) and efficient suppression of hydrogen evolution reaction (HER) with a maximum Faradaic efficiency of up to 97%. The increasing adsorption strength from F− to I− is proposed to form more porous structures and higher oxidized Zn species, thus facilitating the protonation of CO2 and stabilizing the adsorbed intermediates induced by charge donation from the adsorbed halides on Zn surface to CO2, enhance CO2RR and simultaneously suppress HER.

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KW - CO reduction reaction

KW - Electrochemical surface area

KW - Halide ion

KW - Zn-based catalyst

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