TY - JOUR
T1 - Effect of halides on nanoporous Zn-based catalysts for highly efficient electroreduction of CO2 to CO
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
N1 - Funding Information:
The authors acknowledge financial support from the Korea Institute of Science and Technology (KIST) institutional program, the KIST Young Fellow program (2V05970), and partly from the KU-KIST program by the Ministry of Science, ICT and Future Planning. This work was also supported by Next Generation Carbon Upcycling Project (Project No. 2017M1A2A2046713) through the National Research Foundation (NRF) funded by the Ministry of Science and ICT, Republic of Korea. D.L.T.N. thanks to Ms. Khoa Le Tue Nguyen (Microsoft Corp.) for her assistance.
PY - 2018/8
Y1 - 2018/8
N2 - 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.
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.
KW - CO production
KW - CO reduction reaction
KW - Electrochemical surface area
KW - Halide ion
KW - Zn-based catalyst
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U2 - 10.1016/j.catcom.2018.06.020
DO - 10.1016/j.catcom.2018.06.020
M3 - Article
AN - SCOPUS:85048963701
VL - 114
SP - 109
EP - 113
JO - Catalysis Communications
JF - Catalysis Communications
SN - 1566-7367
ER -