CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Tuning the coordination number of Fe single atoms for the efficient reduction of CO2
Chen, HH; Guo, X; Kong, XD; Xing, YL; Liu, Y; Yu, BL; Li, QX; Geng, ZG; Si, R; Zeng, J
2020
Source PublicationGREEN CHEMISTRY
ISSN1463-9262
Volume22Issue:21Pages:7529-7536
Subtype期刊论文
AbstractCO2 electroreduction into valuable products holds great promise for energy supply and environmental remediation but remains a challenge due to the lack of high-performance electrocatalysts. Herein, we developed an efficient strategy to prepare highly active Fe single-atom catalysts (Fe-N-5/Fe-N-6) by tuning the coordination number of Fe with N towards CO2 electroreduction. The faradaic efficiency of CO for Fe-N-5 exceeded 90% ranging from -0.35 to -0.65 V versus the reversible hydrogen electrode (vs. RHE) towards CO2 electroreduction. The turnover frequency of CO for Fe-N-5 reached 5006 h(-1) at -1.05 V vs. RHE, which was 3.8 times that (1324 h(-1)) of Fe-N-6. Besides, CO was generated at an overpotential as low as 50 mV over Fe-N-5, smaller than that (90 mV) over Fe-N-6. Density functional theory calculations demonstrated that Fe-N-5 facilitated the adsorption and activation of CO2 to form the *COOH intermediate, thus leading to superior selectivity and activity for CO2 electroreduction.
KeywordMETAL-ORGANIC FRAMEWORKS OXYGEN REDUCTION CARBON ELECTROREDUCTION CONVERSION CATALYSTS SITES CAPTURE
DOI10.1039/d0gc02689a
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33228
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale,Dept Chem Phys, CAS Key Lab Strongly Coupled Quantum Matter Phys, Key Lab Surface & Interface Chem & Energy Catalys, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
Recommended Citation
GB/T 7714
Chen, HH,Guo, X,Kong, XD,et al. Tuning the coordination number of Fe single atoms for the efficient reduction of CO2[J]. GREEN CHEMISTRY,2020,22(21):7529-7536.
APA Chen, HH.,Guo, X.,Kong, XD.,Xing, YL.,Liu, Y.,...&Zeng, J.(2020).Tuning the coordination number of Fe single atoms for the efficient reduction of CO2.GREEN CHEMISTRY,22(21),7529-7536.
MLA Chen, HH,et al."Tuning the coordination number of Fe single atoms for the efficient reduction of CO2".GREEN CHEMISTRY 22.21(2020):7529-7536.
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