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Wang YQ, Dan XH, Wang X, Yi ZY, Fu J, Feng YC, Hu JS, Wang D, Wan LJ. Probing the Synergistic Effects of Mg 2+ on CO 2 Reduction Reaction on CoPc by In Situ Electrochemical Scanning Tunneling Microscopy. J Am Chem Soc 2022; 144:20126-20133. [PMID: 36259686 DOI: 10.1021/jacs.2c09862] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report herein the in situ electrochemical scanning tunneling microscopy (ECSTM) study on the synergistic effect of Mg2+ in CO2 reduction reaction (CO2RR) catalyzed by cobalt phthalocyanine (CoPc). ECSTM measurement molecularly resolves the self-assembled CoPc monolayer on the Au(111) substrate. In the CO2 environment, high-contrast species are observed in the adlayer and assigned to the CO2 adsorption on CoPc. Furthermore, the contrast of the CO2-bound complex is higher in Mg2+-containing electrolytes than in Mg2+-free electrolytes, indicating the formation of the CoPc-CO2-Mg2+ complex. The surface coverage of adsorbed CO2 is positively correlated with the Mg2+ concentration as the additive in electrolytes up to a plateau of 30.8 ± 2.7% when c(Mg2+) > 30 mM. The potential step experiment indicates the higher CO2 adsorption dynamics in Mg2+-containing electrolytes than without Mg2+. The rate constants of CO2 adsorption and dissociation in different electrolytes are extracted from the data fitting of statistical results from in situ ECSTM experiments.
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Affiliation(s)
- Yu-Qi Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - Xiao-Han Dan
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Xiang Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China
| | - Zhen-Yu Yi
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - JiaJu Fu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - Ya-Chen Feng
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - Jin-Song Hu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - Dong Wang
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
| | - Li-Jun Wan
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Science (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing100190, China.,University of Chinese Academy of Sciences, Beijing100049, China
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Su M, Dong J, Le J, Zhao Y, Yang W, Yang Z, Attard G, Liu G, Cheng J, Wei Y, Tian Z, Li J. In Situ Raman Study of CO Electrooxidation on Pt(
hkl
) Single‐Crystal Surfaces in Acidic Solution. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Min Su
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Jin‐Chao Dong
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Jia‐Bo Le
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Yu Zhao
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Wei‐Min Yang
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Zhi‐Lin Yang
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Gary Attard
- Department of Physics University of Liverpool Liverpool L69 7ZF UK
| | - Guo‐Kun Liu
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Jun Cheng
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Yi‐Min Wei
- CATL 21C Innovation Laboratory Contemporary Amperex Technology Ltd. Ningde 352100 China
| | - Zhong‐Qun Tian
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
| | - Jian‐Feng Li
- College of Energy State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering, College of Environment and Ecology State key Laboratory of Marine Environmental Science iChEM Xiamen University Xiamen 361005 China
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Su M, Dong JC, Le JB, Zhao Y, Yang WM, Yang ZL, Attard G, Liu GK, Cheng J, Wei YM, Tian ZQ, Li JF. In Situ Raman Study of CO Electrooxidation on Pt(hkl) Single-Crystal Surfaces in Acidic Solution. Angew Chem Int Ed Engl 2020; 59:23554-23558. [PMID: 32918778 DOI: 10.1002/anie.202010431] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Indexed: 11/11/2022]
Abstract
The adsorption and electrooxidation of CO molecules at well-defined Pt(hkl) single-crystal electrode surfaces is a key step towards addressing catalyst poisoning mechanisms in fuel cells. Herein, we employed in situ electrochemical shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) coupled with theoretical calculation to investigate CO electrooxidation on Pt(hkl) surfaces in acidic solution. We obtained the Raman signal of top- and bridge-site adsorbed CO* molecules on Pt(111) and Pt(100). In contrast, on Pt(110) surfaces only top-site adsorbed CO* was detected during the entire electrooxidation process. Direct spectroscopic evidence for OH* and COOH* species forming on Pt(100) and Pt(111) surfaces was afforded and confirmed subsequently via isotope substitution experiments and DFT calculations. In summary, the formation and adsorption of OH* and COOH* species plays a vital role in expediting the electrooxidation process, which relates with the pre-oxidation peak of CO electrooxidation. This work deepens knowledge of the CO electrooxidation process and provides new perspectives for the design of anti-poisoning and highly effective catalysts.
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Affiliation(s)
- Min Su
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Jin-Chao Dong
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Jia-Bo Le
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Yu Zhao
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Wei-Min Yang
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Zhi-Lin Yang
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Gary Attard
- Department of Physics, University of Liverpool, Liverpool, L69 7ZF, UK
| | - Guo-Kun Liu
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Jun Cheng
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Yi-Min Wei
- CATL 21C Innovation Laboratory, Contemporary Amperex Technology Ltd., Ningde, 352100, China
| | - Zhong-Qun Tian
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
| | - Jian-Feng Li
- College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Environment and Ecology, State key Laboratory of Marine Environmental Science, iChEM, Xiamen University, Xiamen, 361005, China
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