1
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Obisesan SV, Parvin M, Tao M, Ramos E, Saunders AC, Farnum BH, Goldsmith CR. Installing Quinol Proton/Electron Mediators onto Non-Heme Iron Complexes Enables Them to Electrocatalytically Reduce O 2 to H 2O at High Rates and Low Overpotentials. Inorg Chem 2024; 63:14126-14141. [PMID: 39008564 DOI: 10.1021/acs.inorgchem.4c01977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
We prepare iron(II) and iron(III) complexes with polydentate ligands that contain quinols, which can act as electron proton transfer mediators. Although the iron(II) complex with N-(2,5-dihydroxybenzyl)-N,N',N'-tris(2-pyridinylmethyl)-1,2-ethanediamine (H2qp1) is inactive as an electrocatalyst, iron complexes with N,N'-bis(2,5-dihydroxybenzyl)-N,N'-bis(2-pyridinylmethyl)-1,2-ethanediamine (H4qp2) and N-(2,5-dihydroxybenzyl)-N,N'-bis(2-pyridinylmethyl)-1,2-ethanediamine (H2qp3) were found to be much more active and more selective for water production than a previously reported cobalt-H2qp1 electrocatalyst while operating at low overpotentials. The catalysts with H2qp3 can enter the catalytic cycle as either Fe(II) or Fe(III) species; entering the cycle through Fe(III) lowers the effective overpotential. On the basis of their TOF0 values, the successful iron-quinol complexes are better electrocatalysts for oxygen reduction than previously reported iron-porphyrin compounds, with the Fe(III)-H2qp3 arguably being the best homogeneous electrocatalyst for this reaction. With iron, the quinol-for-phenol substitution shifts the product selectivity from H2O2 to water with little impact on the overpotential, but unlike cobalt, this substitution also greatly improves the activity, as assessed by TOFmax, by hastening the protonation and oxygen binding steps. The addition of a second quinol further enhances the activity and selectivity for water but modestly increases the effective overpotential.
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Affiliation(s)
- Segun V Obisesan
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Maksuda Parvin
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Matthew Tao
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Eric Ramos
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Alexander C Saunders
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Byron H Farnum
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
| | - Christian R Goldsmith
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama 36849, United States
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2
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Zheng R, Meng Q, Zhang L, Ge J, Liu C, Xing W, Xiao M. Co-based Catalysts for Selective H 2 O 2 Electroproduction via 2-electron Oxygen Reduction Reaction. Chemistry 2023; 29:e202203180. [PMID: 36378121 DOI: 10.1002/chem.202203180] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/13/2022] [Accepted: 11/13/2022] [Indexed: 11/16/2022]
Abstract
Electrochemical production of hydrogen peroxide (H2 O2 ) via two-electron oxygen reduction reaction (ORR) process is emerging as a promising alternative method to the conventional anthraquinone process. To realize high-efficiency H2 O2 electrosynthesis, robust and low cost electrocatalysts have been intensively pursued, among which Co-based catalysts attract particular research interests due to the earth-abundance and high selectivity. Here, we provide a comprehensive review on the advancement of Co-based electrocatalyst for H2 O2 electroproduction. The fundamental chemistry of 2-electron ORR is discussed firstly for guiding the rational design of electrocatalysts. Subsequently, the development of Co-based electrocatalysts involving nanoparticles, compounds and single atom catalysts is summarized with the focus on active site identification, structure regulation and mechanism understanding. Moreover, the current challenges and future directions of the Co-based electrocatalysts are briefly summarized in this review.
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Affiliation(s)
- Ruixue Zheng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China
| | - Qinglei Meng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China
| | - Li Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China
| | - Junjie Ge
- School of Chemistry and Material Science, University of Science and Technology of China Hefei, 230026, Anhui, P. R. China
| | - Changpeng Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China
| | - Wei Xing
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China
| | - Meiling Xiao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, Anhui, P. R. China
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3
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Bohn A, Moreno JJ, Thuéry P, Robert M, Rivada-Wheelaghan O. Electrocatalytic CO 2 Reduction with a Binuclear Bis-Terpyridine Pyrazole-Bridged Cobalt Complex. Chemistry 2023; 29:e202202361. [PMID: 36330884 PMCID: PMC10107111 DOI: 10.1002/chem.202202361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/30/2022] [Accepted: 11/04/2022] [Indexed: 11/06/2022]
Abstract
A pyrazole-based ligand substituted with terpyridine groups at the 3 and 5 positions has been synthesized to form the dinuclear cobalt complex 1, that electrocatalytically reduces carbon dioxide (CO2 ) to carbon monoxide (CO) in the presence of Brønsted acids in DMF. Chemical, electrochemical and UV-vis spectro-electrochemical studies under inert atmosphere indicate pairwise reduction processes of complex 1. Infrared spectro-electrochemical studies under CO2 and CO atmosphere are consistent with a reduced CO-containing dicobalt complex which results from the electroreduction of CO2 . In the presence of trifluoroethanol (TFE), electrocatalytic studies revealed single-site mechanism with up to 94 % selectivity towards CO formation when 1.47 M TFE were present, at -1.35 V vs. Saturated Calomel Electrode in DMF (0.39 V overpotential). The low faradaic efficiencies obtained (<50 %) are attributed to the generation of CO-containing species formed during the electrocatalytic process, which inhibit the reduction of CO2 .
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Affiliation(s)
- Antoine Bohn
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France
| | - Juan José Moreno
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Pierre Thuéry
- NIMBE, Université Paris-Saclay, CEA, CNRS, 91191, Gif-sur-Yvette, France
| | - Marc Robert
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France.,Institut Universitaire de France (IUF), 75005, Paris, France
| | - Orestes Rivada-Wheelaghan
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France.,Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
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4
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Yan T, Chen S, Sun W, Liu Y, Pan L, Shi C, Zhang X, Huang ZF, Zou JJ. IrO 2 Nanoparticle-Decorated Ir-Doped W 18O 49 Nanowires with High Mass Specific OER Activity for Proton Exchange Membrane Electrolysis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6912-6922. [PMID: 36718123 DOI: 10.1021/acsami.2c20529] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The oxygen evolution reaction (OER) severely limits the efficiency of proton exchange membrane (PEM) electrolyzers due to slow reaction kinetics. IrO2 is currently a commonly used anode catalyst, but its large-scale application is limited due to its high price and scarce reserves. Herein, we reported a practical strategy to construct an acid OER catalyst where Iridium oxide loading and iridium element bulk doping are realized on the surface and inside of W18O49 nanowires by immersion adsorption, respectively. Specifically, W0.7Ir0.3Oy has an overpotential of 278 mV at 10 mA·cm-2 in 0.1 M HClO4. The mass activity of 714.10 A·gIr-1 at 1.53 V vs. the reversible hydrogen electrode (RHE) is 80 times that of IrO2, and it can run stably for 55 h. In the PEM water electrolyzer device, its mass activity reaches 3563.63 A·gIr-1 at the cell voltage of 2.0 V. This improved catalytic performance is attributed to the following aspects: (1) The electron transport between iridium and tungsten effectively improves the electronic structure of the catalyst; (2) the introduction of iridium into W18O49 by means of elemental bulk doping and nanoparticles supporting for the enhanced conductivity and electrochemically active surface area of the catalyst, resulting in extensive exposure of active sites and increased intrinsic activity; and (3) during the OER process, partial iridium elements in the bulk phase are precipitated, and iridium oxide is formed on the surface to maintain stable activity. This work provides a new idea for designing oxygen evolution catalysts with low iridium content for practical application in PEM electrolyzers.
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Affiliation(s)
- Tianqing Yan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
| | - Shiyi Chen
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
| | - Wendi Sun
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Yuezheng Liu
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Chengxiang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Zhen-Feng Huang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin300072, China
- Zhejiang Institute of Tianjin University, Ningbo315201, Zhejiang, China
- Haihe Laboratory of Sustainable Chemical Transformations, Tianjin300192, China
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5
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Harraz DM, Weng S, Surendranath Y. Electrochemically Quantifying Oxygen Reduction Selectivity in Nonaqueous Electrolytes. ACS Catal 2023. [DOI: 10.1021/acscatal.2c04564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Deiaa M. Harraz
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Sophia Weng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yogesh Surendranath
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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6
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Obisesan SV, Rose C, Farnum BH, Goldsmith CR. Co(II) Complex with a Covalently Attached Pendent Quinol Selectively Reduces O 2 to H 2O. J Am Chem Soc 2022; 144:22826-22830. [DOI: 10.1021/jacs.2c08315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | - Christian R. Goldsmith
- Department of Chemistry and Biochemistry, Auburn University, Auburn, Alabama36849, United States
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7
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Groff BD, Mayer JM. Optimizing Catalysis by Combining Molecular Scaling Relationships: Iron Porphyrin-Catalyzed Electrochemical Oxygen Reduction as a Case Study. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin D. Groff
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - James M. Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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8
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Yang J, Li P, Li X, Xie L, Wang N, Lei H, Zhang C, Zhang W, Lee YM, Zhang W, Cao R, Fukuzumi S, Nam W. Crucial Roles of a Pendant Imidazole Ligand of a Cobalt Porphyrin Complex in the Stoichiometric and Catalytic Reduction of Dioxygen. Angew Chem Int Ed Engl 2022; 61:e202208143. [PMID: 35730106 DOI: 10.1002/anie.202208143] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Indexed: 11/10/2022]
Abstract
A cobalt porphyrin complex with a pendant imidazole base ([(L1 )CoII ]) is an efficient catalyst for the homogeneous catalytic two-electron reduction of dioxygen by 1,1'-dimethylferrocene (Me2 Fc) in the presence of triflic acid (HOTf), as compared with a cobalt porphyrin complex without a pendant imidazole base ([(L2 )CoII ]). The pendant imidazole ligand plays a crucial role not only to provide an imidazolinium proton for proton-coupled electron transfer (PCET) from [(L1 )CoII ] to O2 in the presence of HOTf but also to facilitate electron transfer (ET) from [(L1 )CoII ] to O2 in the absence of HOTf. The kinetics analysis and the detection of intermediates in the stoichiometric and catalytic reduction of O2 have provided clues to clarify the crucial roles of the pendant imidazole ligand of [(L1 )CoII ] for the first time.
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Affiliation(s)
- Jindou Yang
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Ping Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Lisi Xie
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Ni Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Chaochao Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Weiqiang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, Korea
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9
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Braley SE, Kwon HY, Xu S, Dalton EZ, Jakubikova E, Smith JM. Buffer Assists Electrocatalytic Nitrite Reduction by a Cobalt Macrocycle Complex. Inorg Chem 2022; 61:12998-13006. [PMID: 35948065 DOI: 10.1021/acs.inorgchem.2c00909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work reports a combined experimental and computational study of the activation of an otherwise catalytically inactive cobalt complex, [Co(TIM)Br2]+, for aqueous nitrite reduction. The presence of phosphate buffer leads to efficient electrocatalysis, with rapid reduction to ammonium occurring close to the thermodynamic potential and with high Faradaic efficiency. At neutral pH, increasing buffer concentrations increase catalytic current while simultaneously decreasing overpotential, although high concentrations have an inhibitory effect. Controlled potential electrolysis and rotating ring-disk electrode experiments indicate that ammonium is directly produced from nitrite by [Co(TIM)Br2]+, along with hydroxylamine. Mechanistic investigations implicate a vital role for the phosphate buffer, specifically as a proton shuttle, although high buffer concentrations inhibit catalysis. These results indicate a role for buffer in the design of electrocatalysts for nitrogen oxide conversion.
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Affiliation(s)
- Sarah E Braley
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Hyuk-Yong Kwon
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Song Xu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Evan Z Dalton
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
| | - Elena Jakubikova
- Department of Chemistry, North Carolina State University, 2620 Yarbrough Drive, Raleigh, North Carolina 27695, United States
| | - Jeremy M Smith
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47401, United States
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10
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Yang J, Li P, Li X, Xie L, Wang N, Lei H, Zhang C, Zhang W, Lee YM, Zhang W, Cao R, Fukuzumi S, Nam W. Crucial Roles of a Pendant Imidazole Ligand of a Cobalt Porphyrin Complex in the Stoichiometric and Catalytic Reduction of Dioxygen. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jindou Yang
- Ewha Womans University Department of Chemistry and Nanoscience KOREA, REPUBLIC OF
| | - Ping Li
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Xialiang Li
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Lisi Xie
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Ni Wang
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Haitao Lei
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Chaochao Zhang
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Wei Zhang
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Yong-Min Lee
- Ewha Womans University Department of Chemistry and Nanoscience KOREA, REPUBLIC OF
| | - Weiqiang Zhang
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Rui Cao
- Shaanxi Normal University School of Chemistry and Chemical Engineering CHINA
| | - Shunichi Fukuzumi
- Osaka University Department of Material and Life Science 2-1 Yamada-oka 565-0871 Suita JAPAN
| | - Wonwoo Nam
- Ewha Womans University Department of Chemistry and Nanoscience KOREA, REPUBLIC OF
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11
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Wiedner ES, Appel AM, Raugei S, Shaw WJ, Bullock RM. Molecular Catalysts with Diphosphine Ligands Containing Pendant Amines. Chem Rev 2022; 122:12427-12474. [PMID: 35640056 DOI: 10.1021/acs.chemrev.1c01001] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Pendant amines play an invaluable role in chemical reactivity, especially for molecular catalysts based on earth-abundant metals. As inspired by [FeFe]-hydrogenases, which contain a pendant amine positioned for cooperative bifunctionality, synthetic catalysts have been developed to emulate this multifunctionality through incorporation of a pendant amine in the second coordination sphere. Cyclic diphosphine ligands containing two amines serve as the basis for a class of catalysts that have been extensively studied and used to demonstrate the impact of a pendant base. These 1,5-diaza-3,7-diphosphacyclooctanes, now often referred to as "P2N2" ligands, have profound effects on the reactivity of many catalysts. The resulting [Ni(PR2NR'2)2]2+ complexes are electrocatalysts for both the oxidation and production of H2. Achieving the optimal benefit of the pendant amine requires that it has suitable basicity and is properly positioned relative to the metal center. In addition to the catalytic efficacy demonstrated with [Ni(PR2NR'2)2]2+ complexes for the oxidation and production of H2, catalysts with diphosphine ligands containing pendant amines have also been demonstrated for several metals for many different reactions, both in solution and immobilized on surfaces. The impact of pendant amines in catalyst design continues to expand.
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12
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Nazarova AL, Zayat B, Fokin VV, Narayan SR. Electrochemical Studies of the Cycloaddition Activity of Bismuth(III) Acetylides Towards Organic Azides Under Copper(I)-Catalyzed Conditions. Front Chem 2022; 10:830237. [PMID: 36204144 PMCID: PMC9531323 DOI: 10.3389/fchem.2022.830237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/13/2022] [Indexed: 11/21/2022] Open
Abstract
Time-dependent monitoring of the reactive intermediates provides valuable information about the mechanism of a synthetic transformation. However, the process frequently involves intermediates with short lifetimes that significantly challenge the accessibility of the desired kinetic data. We report in situ cyclic voltammetry (CV) and nuclear magnetic resonance (NMR) spectroscopy studies of the cycloaddition reaction of organobismuth(III) compounds with organic azides under the copper(I)-catalyzed conditions. A series of bismuth(III) acetylides carrying diphenyl sulfone scaffolds have been synthesized to study the underlying electronic and steric effects of the tethered moieties capable of transannular oxygen O···Bi interactions and para-functionality of the parent phenylacetylene backbones. While belonging to the family of copper-catalyzed azide-alkyne cycloaddition reactions, the reaction yielding 5-bismuth(III)-triazolide is the sole example of a complex catalytic transformation that features activity of bismuth(III) acetylides towards organic azides under copper(I)-catalyzed conditions. Stepwise continuous monitoring of the copper(I)/copper(0) redox activity of the copper(I) catalyst by cyclic voltammetry provided novel insights into the complex catalytic cycle of the bismuth(III)-triazolide formation. From CV-derived kinetic data, reaction rate parameters of the bismuth(III) acetylides coordination to the copper(I) catalyst (KA) and equilibrium concentration of the copper species [cat]eq. are compared with the overall 5-bismuth(III)-triazolide formation rate constant kobs obtained by 1H-NMR kinetic analysis.
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Affiliation(s)
- Antonina L. Nazarova
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, CA, United States
- Bridge Institute, USC Michelson Center for Convergent Bioscience, University of Southern California, Los Angeles, CA, United States
| | - Billal Zayat
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, CA, United States
| | - Valery V. Fokin
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, CA, United States
- Bridge Institute, USC Michelson Center for Convergent Bioscience, University of Southern California, Los Angeles, CA, United States
- *Correspondence: Valery V. Fokin, ; Sri R. Narayan,
| | - Sri R. Narayan
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, CA, United States
- *Correspondence: Valery V. Fokin, ; Sri R. Narayan,
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13
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Determining the Overpotential of Electrochemical Fuel Synthesis Mediated by Molecular Catalysts: Recommended Practices, Standard Reduction Potentials, and Challenges. ChemElectroChem 2021. [DOI: 10.1002/celc.202100576] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Arima H, Wada M, Nakazono T, Wada T. Tuning Oxygen Reduction Catalysis of Dinuclear Cobalt Polypyridyl Complexes by the Bridging Structure. Inorg Chem 2021; 60:9402-9415. [PMID: 33988979 DOI: 10.1021/acs.inorgchem.1c00293] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The four-electron oxygen reduction reaction (4e--ORR) is the mainstay in chemical energy conversion. Elucidation of factors influencing the catalyst's reaction rate and selectivity is important in the development of more active catalysts of 4e--ORR. In this study, we investigated chemical and electrochemical 4e--ORR catalyzed by Co2(μ-O2) complexes bridged by xanthene (1) and anthracene (3) and by a Co2(OH)2 complex bridged by anthraquinone (2). In the chemical ORR using Fe(CpMe)2 as a reductant in acidic PhCN, we found that 1 showed the highest initial turnover frequency (TOFinit = 6.8 × 102 s-1) and selectivity for 4e--ORR (96%) in three complexes. The detailed kinetic analyses have revealed that the rate-determining steps (RDSs) in the catalytic cycles of 1-3 have the O2 addition to [CoII2(OH2)2]4+ as an intermediate in common. In the only case that complex 1 was used as a catalyst, kcat depended on proton concentration because the reaction rate of the O2 addition to [CoII2(OH2)2]4+ was so fast as compared to that of the concerted PCET process of 1. Through X-ray, Raman, and electrochemical analyses and stoichiometric reactions, we found the face-to-face structure of 1 characterized by a slightly flexible xanthene was advantageous in capturing O2 and stabilizing the Co2(μ-O2) structure, thus increasing both the reaction rate and selectivity for 4e--ORR.
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Affiliation(s)
- Hiroaki Arima
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Misato Wada
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Takashi Nakazono
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Tohru Wada
- Department of Chemistry, College of Science, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
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15
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Hooe SL, Cook EN, Reid AG, Machan CW. Non-covalent assembly of proton donors and p-benzoquinone anions for co-electrocatalytic reduction of dioxygen. Chem Sci 2021; 12:9733-9741. [PMID: 34349945 PMCID: PMC8293985 DOI: 10.1039/d1sc01271a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/16/2021] [Indexed: 01/01/2023] Open
Abstract
The two-electron and two-proton p-hydroquinone/p-benzoquinone (H2Q/BQ) redox couple has mechanistic parallels to the function of ubiquinone in the electron transport chain. This proton-dependent redox behavior has shown applicability in catalytic aerobic oxidation reactions, redox flow batteries, and co-electrocatalytic oxygen reduction. Under nominally aprotic conditions in non-aqueous solvents, BQ can be reduced by up to two electrons in separate electrochemically reversible reactions. With weak acids (AH) at high concentrations, potential inversion can occur due to favorable hydrogen-bonding interactions with the intermediate monoanion [BQ(AH)m]˙−. The solvation shell created by these interactions can mediate a second one-electron reduction coupled to proton transfer at more positive potentials ([BQ(AH)m]˙− + nAH + e− ⇌ [HQ(AH)(m+n)−1(A)]2−), resulting in an overall two electron reduction at a single potential at intermediate acid concentrations. Here we show that hydrogen-bonded adducts of reduced quinones and the proton donor 2,2,2-trifluoroethanol (TFEOH) can mediate the transfer of electrons to a Mn-based complex during the electrocatalytic reduction of dioxygen (O2). The Mn electrocatalyst is selective for H2O2 with only TFEOH and O2 present, however, with BQ present under sufficient concentrations of TFEOH, an electrogenerated [H2Q(AH)3(A)2]2− adduct (where AH = TFEOH) alters product selectivity to 96(±0.5)% H2O in a co-electrocatalytic fashion. These results suggest that hydrogen-bonded quinone anions can function in an analogous co-electrocatalytic manner to H2Q. Non-covalent interactions between reduced p-benzoquinone species and weak acids stabilize intermediates which can switch dioxygen reduction selectivity from H2O2 to H2O for a molecular Mn catalyst.![]()
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Affiliation(s)
- Shelby L Hooe
- Department of Chemistry, University of Virginia PO Box 400319 Charlottesville VA 22904-4319 USA
| | - Emma N Cook
- Department of Chemistry, University of Virginia PO Box 400319 Charlottesville VA 22904-4319 USA
| | - Amelia G Reid
- Department of Chemistry, University of Virginia PO Box 400319 Charlottesville VA 22904-4319 USA
| | - Charles W Machan
- Department of Chemistry, University of Virginia PO Box 400319 Charlottesville VA 22904-4319 USA
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16
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Lv B, Li X, Guo K, Ma J, Wang Y, Lei H, Wang F, Jin X, Zhang Q, Zhang W, Long R, Xiong Y, Apfel UP, Cao R. Controlling Oxygen Reduction Selectivity through Steric Effects: Electrocatalytic Two-Electron and Four-Electron Oxygen Reduction with Cobalt Porphyrin Atropisomers. Angew Chem Int Ed Engl 2021; 60:12742-12746. [PMID: 33742485 DOI: 10.1002/anie.202102523] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Indexed: 01/26/2023]
Abstract
Achieving a selective 2 e- or 4 e- oxygen reduction reaction (ORR) is critical but challenging. Herein, we report controlling ORR selectivity of Co porphyrins by tuning only steric effects. We designed Co porphyrin 1 with meso-phenyls each bearing a bulky ortho-amido group. Due to the resulted steric hinderance, 1 has four atropisomers with similar electronic structures but dissimilar steric effects. Isomers αβαβ and αααα catalyze ORR with n=2.10 and 3.75 (n is the electron number transferred per O2 ), respectively, but ααββ and αααβ show poor selectivity with n=2.89-3.10. Isomer αβαβ catalyzes 2 e- ORR by preventing a bimolecular O2 activation path, while αααα improves 4 e- ORR selectivity by improving O2 binding at its pocket, a feature confirmed by spectroscopy methods, including O K-edge near-edge X-ray absorption fine structure. This work represents an unparalleled example to improve 2 e- and 4 e- ORR by tuning only steric effects without changing molecular and electronic structures.
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Affiliation(s)
- Bin Lv
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Kai Guo
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Jun Ma
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovative Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yanzhi Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Fang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Xiaotong Jin
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Qingxin Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Ran Long
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovative Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovative Center of Chemistry for Energy Materials (iChEM), School of Chemistry and Materials Science, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ulf-Peter Apfel
- Ruhr-Universität Bochum, Fakultät für Chemie und Biochemie, Anorganische Chemie I, Universitätsstrasse 150, 44801, Bochum, Germany.,Fraunhofer UMSICHT, Osterfelder Strasse 3, 46047, Oberhausen, Germany
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, China
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17
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Lv B, Li X, Guo K, Ma J, Wang Y, Lei H, Wang F, Jin X, Zhang Q, Zhang W, Long R, Xiong Y, Apfel U, Cao R. Controlling Oxygen Reduction Selectivity through Steric Effects: Electrocatalytic Two‐Electron and Four‐Electron Oxygen Reduction with Cobalt Porphyrin Atropisomers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102523] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Bin Lv
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Kai Guo
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Jun Ma
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovative Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230026 China
| | - Yanzhi Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Fang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Xiaotong Jin
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Qingxin Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
| | - Ran Long
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovative Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230026 China
| | - Yujie Xiong
- Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovative Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei Anhui 230026 China
| | - Ulf‐Peter Apfel
- Ruhr-Universität Bochum Fakultät für Chemie und Biochemie, Anorganische Chemie I Universitätsstrasse 150 44801 Bochum Germany
- Fraunhofer UMSICHT Osterfelder Strasse 3 46047 Oberhausen Germany
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710119 China
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18
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Brezny AC, Nedzbala HS, Mayer JM. Multiple selectivity-determining mechanisms of H 2O 2 formation in iron porphyrin-catalysed oxygen reduction. Chem Commun (Camb) 2021; 57:1202-1205. [PMID: 33427251 DOI: 10.1039/d0cc06701f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple H2O2-forming mechanisms are accessible in Fe(porphyrin)-catalysed oxygen reduction, a key reaction in both fuel cell technologies and oxygen-utilizing enzymes. Our kinetic analysis reveals that the porphyrin secondary structure dictates the pathway for H2O2 formation. This approach is generalizable to other electrocatalytic processes and provides insight into the selectivity-determining steps.
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Affiliation(s)
- Anna C Brezny
- Department of Chemistry, Yale University, New Haven, CT 06520, USA. and Department of Chemistry, Skidmore College, Saratoga Springs, NY 12866, USA
| | | | - James M Mayer
- Department of Chemistry, Yale University, New Haven, CT 06520, USA.
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19
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Straistari T, Morozan A, Shova S, Réglier M, Orio M, Artero V. Catalytic Reduction of Oxygen by a Copper Thiosemicarbazone Complex. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tatiana Straistari
- CEA/IRIG, Laboratoire de Chimie et Biologie des Métaux Univ. Grenoble Alpes, CNRS 17 rue des Martyrs, F‐ 38054 Grenoble cedex 9 France
- Centrale Marseille, iSm2 Aix‐Marseille Univ., CNRS Marseille France
- Institute of Chemistry. Academy of Sciences of Moldova 3, Academiei street MD 2028 Chisinau Republic of Moldova
| | - Adina Morozan
- CEA/IRIG, Laboratoire de Chimie et Biologie des Métaux Univ. Grenoble Alpes, CNRS 17 rue des Martyrs, F‐ 38054 Grenoble cedex 9 France
| | - Sergiu Shova
- Institute of Macromolecular Chemistry "Petru Poni" 41A Grigore Ghica Voda Alley 700487 Iasi Romania
| | - Marius Réglier
- Centrale Marseille, iSm2 Aix‐Marseille Univ., CNRS Marseille France
| | - Maylis Orio
- Centrale Marseille, iSm2 Aix‐Marseille Univ., CNRS Marseille France
| | - Vincent Artero
- CEA/IRIG, Laboratoire de Chimie et Biologie des Métaux Univ. Grenoble Alpes, CNRS 17 rue des Martyrs, F‐ 38054 Grenoble cedex 9 France
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20
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Gutiérrez-Tarriño S, Olloqui-Sariego JL, Calvente JJ, Espallargas GM, Rey F, Corma A, Oña-Burgos P. Cobalt Metal-Organic Framework Based on Layered Double Nanosheets for Enhanced Electrocatalytic Water Oxidation in Neutral Media. J Am Chem Soc 2020; 142:19198-19208. [PMID: 33125226 DOI: 10.1021/jacs.0c08882] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new cobalt metal-organic framework (2D-Co-MOF) based on well-defined layered double cores that are strongly connected by intermolecular bonds has been developed. Its 3D structure is held together by π-π stacking interactions between the labile pyridine ligands of the nanosheets. In aqueous solution, the axial pyridine ligands are exchanged by water molecules, producing a delamination of the material, where the individual double nanosheets preserve their structure. The original 3D layered structure can be restored by a solvothermal process with pyridine, so that the material shows a "memory effect" during the delamination-pillarization process. Electrochemical activation of a 2D-Co-MOF@Nafion-modified graphite electrode in aqueous solution improves the ionic migration and electron transfer across the film and promotes the formation of the electrocatalytically active cobalt species for the oxygen evolution reaction (OER). The so-activated 2D-Co-MOF@Nafion composite exhibits an outstanding electrocatalytic performance for the OER at neutral pH, with a TOF value (0.034 s-1 at an overpotential of 400 mV) and robustness superior to those reported for similar electrocatalysts under similar conditions. The particular topology of the delaminated nanosheets, with quite distant cobalt centers, precludes the direct coupling between the electrocatalytically active centers of the same sheet. On the other hand, the increase in ionic migration across the film during the electrochemical activation stage rules out the intersheet coupling between active cobalt centers, as this scenario would impair electrolyte permeation. Altogether, the most plausible mechanism for the O-O bond formation is the water nucleophilic attack to single Co(IV)-oxo or Co(III)-oxyl centers. Its high electrochemical efficiency suggests that the presence of nitrogen-containing aromatic equatorial ligands facilitates the water nucleophilic attack, as in the case of the highly efficient cobalt porphyrins.
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Affiliation(s)
- Silvia Gutiérrez-Tarriño
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - José Luis Olloqui-Sariego
- Departamento de Química Física, Universidad de Sevilla. Profesor García González 1. 41012 Sevilla, Spain
| | - Juan José Calvente
- Departamento de Química Física, Universidad de Sevilla. Profesor García González 1. 41012 Sevilla, Spain
| | - Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Fernando Rey
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Pascual Oña-Burgos
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Avda. de los Naranjos s/n, 46022 Valencia, Spain.,Departamento de Química y Física, Centro de Investigación CIAIMBITAL, Universidad de Almería, Ctra. Sacramento, s/n, 04120 Almería, Spain
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21
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Suzuki W, Kotani H, Ishizuka T, Kojima T. A Mechanistic Dichotomy in Two-Electron Reduction of Dioxygen Catalyzed by N,N'-Dimethylated Porphyrin Isomers. Chemistry 2020; 26:10480-10486. [PMID: 32329533 DOI: 10.1002/chem.202000942] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/23/2020] [Indexed: 12/13/2022]
Abstract
Selective two-electron reduction of dioxygen (O2 ) to hydrogen peroxide (H2 O2 ) has been achieved by two saddle-distorted N,N'-dimethylated porphyrin isomers, an N21,N'22-dimethylated porphyrin (anti-Me2 P) and an N21,N'23-dimethylated porphyrin (syn-Me2 P) as catalysts and ferrocene derivatives as electron donors in the presence of protic acids in acetonitrile. The higher catalytic performance in an oxygen reduction reaction (ORR) was achieved by anti-Me2 P with higher turnover number (TON=250 for 30 min) than that by syn-Me2 P (TON=218 for 60 min). The reactive intermediates in the catalytic ORR were confirmed to be the corresponding isophlorins (anti-Me2 Iph or syn-Me2 Iph) by spectroscopic measurements. The rate-determining step in the catalytic ORRs was concluded to be proton-coupled electron-transfer reduction of O2 with isophlorins based on kinetic analysis. The ORR rate by anti-Me2 Iph was accelerated by external protons, judging from the dependence of the observed initial rates on acid concentrations. In contrast, no acceleration of the ORR rate with syn-Me2 Iph by external protons was observed. The different mechanisms in the O2 reduction by the two isomers should be derived from that of the arrangement of hydrogen bonding of a O2 with inner NH protons of the isophlorins.
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Affiliation(s)
- Wataru Suzuki
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8571, Japan
| | - Hiroaki Kotani
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8571, Japan
| | - Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki, 305-8571, Japan
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22
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Martin DJ, Wise CF, Pegis ML, Mayer JM. Developing Scaling Relationships for Molecular Electrocatalysis through Studies of Fe-Porphyrin-Catalyzed O 2 Reduction. Acc Chem Res 2020; 53:1056-1065. [PMID: 32281786 DOI: 10.1021/acs.accounts.0c00044] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The oxygen reduction reaction (ORR) is a multiproton/multielectron transformation in which dioxygen (O2) is reduced to water or hydrogen peroxide and serves as the cathode reaction in most fuel cells. The ORR (O2 + 4e- + 4H+ → 2H2O) involves up to nine substrates and thus requires navigating a complicated reaction landscape, typically with several high-energy intermediates. Many catalysts can perform this reaction, though few operate with fast rates and at low overpotentials (close to the thermodynamic potential). Attempts to optimize these parameters, both in homogeneous and heterogeneous electrocatalytic systems, have focused on modifying catalyst design and understanding kinetic/thermodynamic relationships between catalytic intermediates. One such method for analyzing and predicting catalyst reactivity and efficiency has been the development of "molecular scaling relationships". Here, we share our experience deriving and utilizing molecular scaling relationships for soluble, iron-porphyrin-catalyzed O2 reduction in organic solvents. These relationships correlate turnover frequencies (TOFmax) and effective overpotentials (ηeff), properties uniquely defined for homogeneous catalysts. Following a general introduction of scaling relationships for both homogeneous and heterogeneous electrocatalysis, we describe the components of such scaling relationships: (i) the overall thermochemistry of the reaction and (ii) the rate and rate law of the catalyzed reaction. We then show how connecting these thermodynamic and kinetic parameters reveals multiple molecular scaling relationships for iron-porphyrin-catalyzed O2 reduction. For example, the log(TOFmax) responds steeply to changes in ηeff that result from different catalyst reduction potentials (18.5 decades in TOFmax/V in ηeff) but much less dramatically to changes in ηeff that arise from varying the pKa of the acid buffer (5.1 decades in TOFmax/V in ηeff). Thus, a single scaling relationship is not always sufficient for describing molecular electrocatalysis. This is particularly evident when the catalyst identity and reaction conditions are coupled. Using these multiple scaling relationships, we demonstrate that the metrics of turnover frequency and effective overpotential can be predictably tuned to achieve faster rates at lowered overpotentials. This Account uses a collection of related stories describing our research on soluble iron-porphyrin-catalyzed ORR to show how molecular scaling relationships can be derived and used for any electrocatalytic reaction. Such scaling relationships are powerful tools that connect the thermochemistry, mechanism, and rate law for a catalytic system. We hope that this collection shows the utility and simplicity of the molecular scaling approach for understanding catalysis, for enabling direct comparisons between catalyst systems, and for optimizing catalytic processes.
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Affiliation(s)
- Daniel J. Martin
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Catherine F. Wise
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Michael L. Pegis
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - James M. Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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23
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Brezny AC, Johnson SI, Raugei S, Mayer JM. Selectivity-Determining Steps in O 2 Reduction Catalyzed by Iron(tetramesitylporphyrin). J Am Chem Soc 2020; 142:4108-4113. [PMID: 32064870 PMCID: PMC7266133 DOI: 10.1021/jacs.9b13654] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The oxygen reduction reaction (ORR) is the cathode reaction in fuel cells and its selectivity for water over hydrogen peroxide production is important for these technologies. Iron porphyrin catalysts have long been studied for the ORR, but the origins of their selectivity are not well understood because the selectivity-determining step(s) usually occur after the rate-determining step. We report here the effects of acid concentration, as well as other solution conditions such as acid pKa, on the H2O2/H2O selectivity in electrocatalytic ORR by iron(tetramesitylporphyrin) (Fe(TMP)) in DMF. The results show that selectivity reflects a kinetic competition in which the dependence on [HX] is one order greater for the production of H2O than H2O2. Based on such experimental results and computational studies, we propose that the selectivity is governed by competition between protonation of the hydroperoxo intermediate, FeIII(TMP)(OOH), to produce water versus dissociation of the HOO- ligand to yield H2O2. The data rule out a bifurcation based on the regioselectivity of protonation of the hydroperoxide, as suggested in the enzymatic systems. Furthermore, the analysis developed in this report should be generally valuable to the study of selectivity in other multi-proton/multi-electron electrocatalytic reactions.
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Affiliation(s)
- Anna C. Brezny
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
| | - Samantha I. Johnson
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Simone Raugei
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, Richland, Washington 99352
| | - James M. Mayer
- Department of Chemistry, Yale University, New Haven, Connecticut 06520
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24
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Martin DJ, Mercado BQ, Mayer JM. Combining scaling relationships overcomes rate versus overpotential trade-offs in O 2 molecular electrocatalysis. SCIENCE ADVANCES 2020; 6:eaaz3318. [PMID: 32201730 PMCID: PMC7069693 DOI: 10.1126/sciadv.aaz3318] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/17/2019] [Indexed: 05/19/2023]
Abstract
The development of advanced chemical-to-electrical energy conversions requires fast and efficient electrocatalysis of multielectron/multiproton reactions, such as the oxygen reduction reaction (ORR). Using molecular catalysts, correlations between the reaction rate and energy efficiency have recently been identified. Improved catalysis requires circumventing the rate versus overpotential trade-offs implied by such "scaling relationships." Described here is an ORR system-using a soluble iron porphyrin and weak acids-with the best reported combination of rate and efficiency for a soluble ORR catalyst. This advance is achieved not by "breaking" scaling relationships but rather by combining two of them. Key to this behavior is a polycationic ligand, which enhances anionic ligand binding and changes the catalyst E 1/2. These results show how combining scaling relationships is a powerful way toward improved electrocatalysis.
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25
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Affiliation(s)
- Charles W. Machan
- University of Virginia, McCormick Road,
PO Box 400319, Charlottesville, Virginia 22904-4319, United States
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26
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Smith PT, Kim Y, Benke BP, Kim K, Chang CJ. Supramolecular Tuning Enables Selective Oxygen Reduction Catalyzed by Cobalt Porphyrins for Direct Electrosynthesis of Hydrogen Peroxide. Angew Chem Int Ed Engl 2020; 59:4902-4907. [DOI: 10.1002/anie.201916131] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Peter T. Smith
- Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Younghoon Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Bahiru Punja Benke
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Kimoon Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Christopher J. Chang
- Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
- Department of Molecular and Cell Biology University of California, Berkeley Berkeley CA 94720-1460 USA
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27
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Smith PT, Kim Y, Benke BP, Kim K, Chang CJ. Supramolecular Tuning Enables Selective Oxygen Reduction Catalyzed by Cobalt Porphyrins for Direct Electrosynthesis of Hydrogen Peroxide. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916131] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Peter T. Smith
- Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
| | - Younghoon Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Bahiru Punja Benke
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Kimoon Kim
- Department of Chemistry Pohang University of Science and Technology Pohang 37673 Republic of Korea
- Center for Self-assembly and Complexity (CSC) Institute for Basic Science (IBS) Pohang 37673 Republic of Korea
| | - Christopher J. Chang
- Department of Chemistry University of California, Berkeley Chemical Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720-1460 USA
- Department of Molecular and Cell Biology University of California, Berkeley Berkeley CA 94720-1460 USA
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28
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Dinda S, Roy S, Patra SC, Bhandary S, Pramanik K, Ganguly S. Polyaromatic hydrocarbon derivatized azo-oximes of cobalt( iii) for the ligand-redox controlled electrocatalytic oxygen reduction reaction. NEW J CHEM 2020. [DOI: 10.1039/c9nj05527d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two new polyaromatic hydrocarbon (PAH) derivatized cobalt(iii) azo-oxime complexes were synthesized and their activity in electrocatalytic oxygen reduction reaction (ORR) were explored.
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Affiliation(s)
- Soumitra Dinda
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata–700016
- India
| | - Syamantak Roy
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Jakkur
- Bangalore
| | | | - Subhrajyoti Bhandary
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal By-pass Road
- Bhauri
- Bhopal
| | | | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata–700016
- India
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29
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Gutiérrez-Tarriño S, Olloqui-Sariego JL, Calvente JJ, Palomino M, Mínguez Espallargas G, Jordá JL, Rey F, Oña-Burgos P. Cobalt Metal-Organic Framework Based on Two Dinuclear Secondary Building Units for Electrocatalytic Oxygen Evolution. ACS APPLIED MATERIALS & INTERFACES 2019; 11:46658-46665. [PMID: 31752488 DOI: 10.1021/acsami.9b13655] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The synthesis of a new microporous metal-organic framework (MOF) based on two secondary building units, with dinuclear cobalt centers, has been developed. The employment of a well-defined cobalt cluster results in an unusual topology of the Co2-MOF, where one of the cobalt centers has three open coordination positions, which has no precedent in MOF materials based on cobalt. Adsorption isotherms have revealed that Co2-MOF is in the range of best CO2 adsorbents among the carbon materials, with very high CO2/CH4 selectivity. On the other hand, dispersion of Co2-MOF in an alcoholic solution of Nafion gives rise to a composite (Co2-MOF@Nafion) with great resistance to hydrolysis in aqueous media and good adherence to graphite electrodes. In fact, it exhibits high electrocatalytic activity and robustness for the oxygen evolution reaction (OER), with a turnover frequency number value superior to those reported for similar electrocatalysts. Overall, this work has provided the basis for the rational design of new cobalt OER catalysts and related materials employing well-defined metal clusters as directing agents of the MOF structure.
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Affiliation(s)
- Silvia Gutiérrez-Tarriño
- Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC) , Avda. de los Naranjos, s/n , 46022 Valencia , Spain
| | - José Luis Olloqui-Sariego
- Departamento de Química Física , Universidad de Sevilla , Profesor García González, 1 , 41012 Sevilla , Spain
| | - Juan José Calvente
- Departamento de Química Física , Universidad de Sevilla , Profesor García González, 1 , 41012 Sevilla , Spain
| | - Miguel Palomino
- Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC) , Avda. de los Naranjos, s/n , 46022 Valencia , Spain
| | - Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol) , Universidad de Valencia , c/Catedrático José Beltrán, 2 , 46980 Paterna , Spain
| | - José L Jordá
- Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC) , Avda. de los Naranjos, s/n , 46022 Valencia , Spain
| | - Fernando Rey
- Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC) , Avda. de los Naranjos, s/n , 46022 Valencia , Spain
| | - Pascual Oña-Burgos
- Instituto de Tecnología Química , Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC) , Avda. de los Naranjos, s/n , 46022 Valencia , Spain
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30
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Arnett CH, Kaiser JT, Agapie T. Remote Ligand Modifications Tune Electronic Distribution and Reactivity in Site-Differentiated, High-Spin Iron Clusters: Flipping Scaling Relationships. Inorg Chem 2019; 58:15971-15982. [PMID: 31738534 DOI: 10.1021/acs.inorgchem.9b02470] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the synthesis, characterization, and reactivity of [LFe3O(RArIm)3Fe][OTf]2, the first Hammett series of a site-differentiated cluster. The cluster reduction potentials and CO stretching frequencies shift as expected on the basis of the electronic properties of the ligand: electron-donating substituents result in more reducing clusters and weaker C-O bonds. However, unusual trends in the energetics of their two sequential CO binding events with the substituent σp parameters are observed. Specifically, introduction of electron-donating substituents suppresses the first CO binding event (ΔΔH by as much as 7.9 kcal mol-1) but enhances the second (ΔΔH by as much as 1.9 kcal mol-1). X-ray crystallography, including multiple-wavelength anomalous diffraction, Mössbauer spectroscopy, and SQUID magnetometry, reveal that these substituent effects result from changes in the energetic penalty associated with electronic redistribution within the cluster, which occurs during the CO binding event.
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Affiliation(s)
- Charles H Arnett
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Jens T Kaiser
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Theodor Agapie
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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31
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Liu Y, Zhou G, Zhang Z, Lei H, Yao Z, Li J, Lin J, Cao R. Significantly improved electrocatalytic oxygen reduction by an asymmetrical Pacman dinuclear cobalt(ii) porphyrin-porphyrin dyad. Chem Sci 2019; 11:87-96. [PMID: 32110360 PMCID: PMC7012046 DOI: 10.1039/c9sc05041h] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/03/2019] [Indexed: 11/21/2022] Open
Abstract
Asymmetrical Pacman dinuclear Co bisporphyrin shows significantly improved activity and selectivity for catalytic reduction of O2 to water in comparison with corresponding mononuclear Co porphyrins and symmetrical dinuclear Co bisporphyrins.
Pacman dinuclear CoII triphenylporphyrin-tri(pentafluorophenyl)porphyrin 1 and dinuclear CoII bis-tri(pentafluorophenyl)porphyrin 2, anchored at the two meso-positions of a benzene linker, are synthesized and examined as electrocatalysts for the oxygen reduction reaction (ORR). Both dinuclear Co bisporphyrins are more efficient and selective than corresponding mononuclear CoII tetra(pentafluorophenyl)porphyrin 3 and CoII tetraphenylporphyrin 4 for the four-electron electrocatalytic reduction of O2 to water. Significantly, although the ORR selectivities of the two dinuclear Co bisporphyrins are similar to each other, 1 outperforms 2, in terms of larger catalytic ORR currents and lower overpotentials. Electrochemical studies showed different redox behaviors of the two Co sites of 1: the CoIII/CoII reduction of the Co-TPP (TPP = triphenylporphyrin) site is well-behind that of the Co-TPFP (TPFP = tri(pentafluorophenyl)porphyrin) site by 440 mV. This difference indicated their different roles in the ORR: CoII-TPFP is likely the O2 binding and reduction site, while CoIII-TPP, which is generated by the oxidation of CoII-TPP on electrodes, may function as a Lewis acid to assist the O2 binding and activation. The positively charged CoIII-TPP will have through-space charge interactions with the negatively charged O2-adduct unit, which will reduce the activation energy barrier for the ORR. This effect of Co-TPP closely resembles that of the CuB site of metalloenzyme cytochrome c oxidase (CcO), which catalyzes the biological reduction of O2. This work represents a rare example of asymmetrical dinuclear metal catalysts, which can catalyze the 4e reduction of O2 with high selectivity and significantly improved activity.
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Affiliation(s)
- Yanju Liu
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , China . .,Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Guojun Zhou
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , China .
| | - Zongyao Zhang
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , China .
| | - Zhen Yao
- College of Materials Science and Optoelectronic Technology , University of Chinese Academy of Science , Beijing 101408 , China
| | - Jianfeng Li
- College of Materials Science and Optoelectronic Technology , University of Chinese Academy of Science , Beijing 101408 , China
| | - Jun Lin
- Department of Chemistry , Renmin University of China , Beijing 100872 , China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry , Ministry of Education , School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , China .
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32
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Sandford C, Edwards MA, Klunder KJ, Hickey DP, Li M, Barman K, Sigman MS, White HS, Minteer SD. A synthetic chemist's guide to electroanalytical tools for studying reaction mechanisms. Chem Sci 2019; 10:6404-6422. [PMID: 31367303 PMCID: PMC6615219 DOI: 10.1039/c9sc01545k] [Citation(s) in RCA: 180] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 05/23/2019] [Indexed: 12/19/2022] Open
Abstract
Monitoring reactive intermediates can provide vital information in the study of synthetic reaction mechanisms, enabling the design of new catalysts and methods. Many synthetic transformations are centred on the alteration of oxidation states, but these redox processes frequently pass through intermediates with short life-times, making their study challenging. A variety of electroanalytical tools can be utilised to investigate these redox-active intermediates: from voltammetry to in situ spectroelectrochemistry and scanning electrochemical microscopy. This perspective provides an overview of these tools, with examples of both electrochemically-initiated processes and monitoring redox-active intermediates formed chemically in solution. The article is designed to introduce synthetic organic and organometallic chemists to electroanalytical techniques and their use in probing key mechanistic questions.
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Affiliation(s)
- Christopher Sandford
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Martin A Edwards
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Kevin J Klunder
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - David P Hickey
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Min Li
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Koushik Barman
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Matthew S Sigman
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Henry S White
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
| | - Shelley D Minteer
- Department of Chemistry , University of Utah , 315 South 1400 East , Salt Lake City , Utah 84112 , USA . ; ;
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33
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Thermodynamics of complex formation in dimethylsulfoxide: The case of Co(II) complexes with nitrogen donor ligands and their O2 adducts. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Wang YH, Schneider PE, Goldsmith ZK, Mondal B, Hammes-Schiffer S, Stahl SS. Brønsted Acid Scaling Relationships Enable Control Over Product Selectivity from O 2 Reduction with a Mononuclear Cobalt Porphyrin Catalyst. ACS CENTRAL SCIENCE 2019; 5:1024-1034. [PMID: 31263762 PMCID: PMC6598176 DOI: 10.1021/acscentsci.9b00194] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Indexed: 05/11/2023]
Abstract
The selective reduction of O2, typically with the goal of forming H2O, represents a long-standing challenge in the field of catalysis. Macrocyclic transition-metal complexes, and cobalt porphyrins in particular, have been the focus of extensive study as catalysts for this reaction. Here, we show that the mononuclear Co-tetraarylporphyrin complex, Co(porOMe) (porOMe = meso-tetra(4-methoxyphenyl)porphyrin), catalyzes either 2e-/2H+ or 4e-/4H+ reduction of O2 with high selectivity simply by changing the identity of the Brønsted acid in dimethylformamide (DMF). The thermodynamic potentials for O2 reduction to H2O2 or H2O in DMF are determined and exhibit a Nernstian dependence on the acid pK a, while the CoIII/II redox potential is independent of the acid pK a. The reaction product, H2O or H2O2, is defined by the relationship between the thermodynamic potential for O2 reduction to H2O2 and the CoIII/II redox potential: selective H2O2 formation is observed when the CoIII/II potential is below the O2/H2O2 potential, while H2O formation is observed when the CoIII/II potential is above the O2/H2O2 potential. Mechanistic studies reveal that the reactions generating H2O2 and H2O exhibit different rate laws and catalyst resting states, and these differences are manifested as different slopes in linear free energy correlations between the log(rate) versus pK a and log(rate) versus effective overpotential for the reactions. This work shows how scaling relationships may be used to control product selectivity, and it provides a mechanistic basis for the pursuit of molecular catalysts that achieve low overpotential reduction of O2 to H2O.
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Affiliation(s)
- Yu-Heng Wang
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Patrick E. Schneider
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Zachary K. Goldsmith
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Biswajit Mondal
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Sharon Hammes-Schiffer
- Department
of Chemistry, Yale University, New Haven, Connecticut 06520, United States
- E-mail:
| | - Shannon S. Stahl
- Department
of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
- E-mail:
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35
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Wintrich D, Öhl D, Barwe S, Ganassin A, Möller S, Tarnev T, Botz A, Ruff A, Clausmeyer J, Masa J, Schuhmann W. Enhancing the Selectivity between Oxygen and Chlorine towards Chlorine during the Anodic Chlorine Evolution Reaction on a Dimensionally Stable Anode. ChemElectroChem 2019. [DOI: 10.1002/celc.201900784] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Daniela Wintrich
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Denis Öhl
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Stefan Barwe
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Alberto Ganassin
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Sandra Möller
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Tsvetan Tarnev
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Alexander Botz
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Adrian Ruff
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Jan Clausmeyer
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Justus Masa
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry – Center for Electrochemical Sciences (CES) Faculty of Chemistry and BiochemistryRuhr-Universität Bochum Universitätsstr.150 44780 Bochum Germany
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36
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Amanullah S, Dey A. A bi-functional cobalt-porphyrinoid electrocatalyst: balance between overpotential and selectivity. J Biol Inorg Chem 2019; 24:437-442. [PMID: 31147783 DOI: 10.1007/s00775-019-01670-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 05/15/2019] [Indexed: 11/29/2022]
Abstract
Cobalt porphyrins have been shown to electrocatalyze O2 reduction as well as H2 evolution. A cobalt porphyrin is synthesized when two electron-withdrawing groups are used in an attempt to reduce the overpotential involved in O2 reduction and H2 evolution. The results show that in the case of O2 reduction, instead of reduction of overpotential, the selectivity for O2 reduction changes to 2e-/2H+ to produce H2O2. In the case of H2 evolution, the CoI state is incapable of catalyzing H+ reduction. Rather, a CoIII-H species needs to be reduced to CoII-H before H2 can be produced. There results add to the ongoing investigations into the factors that control the rates, overpotential and selectivity of these important cathodic processes.
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Affiliation(s)
- Sk Amanullah
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S C Mullick Road, Jadavpur, Kolkata, 700032, India
| | - Abhishek Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S C Mullick Road, Jadavpur, Kolkata, 700032, India.
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37
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Chen P, Liu Y, Liu S. Naphthyridine‐based iridium complexes: Structures and catalytic activity on alkylation of aryl ketones. J CHIN CHEM SOC-TAIP 2019. [DOI: 10.1002/jccs.201900057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Po‐Hao Chen
- Department of ChemistryNational Taiwan University Taipei Taiwan
| | - Yi‐Hung Liu
- Department of ChemistryNational Taiwan University Taipei Taiwan
| | - Shiuh‐Tzung Liu
- Department of ChemistryNational Taiwan University Taipei Taiwan
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38
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Wang L, Gennari M, Cantú Reinhard FG, Gutiérrez J, Morozan A, Philouze C, Demeshko S, Artero V, Meyer F, de Visser SP, Duboc C. A Non-Heme Diiron Complex for (Electro)catalytic Reduction of Dioxygen: Tuning the Selectivity through Electron Delivery. J Am Chem Soc 2019; 141:8244-8253. [DOI: 10.1021/jacs.9b02011] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Lianke Wang
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Marcello Gennari
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Fabián G. Cantú Reinhard
- Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Javier Gutiérrez
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
| | - Adina Morozan
- Université Grenoble Alpes, CNRS, CEA, Laboratoire de Chimie et
Biologie des Métaux, F-38000 Grenoble, France
| | | | - Serhiy Demeshko
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Vincent Artero
- Université Grenoble Alpes, CNRS, CEA, Laboratoire de Chimie et
Biologie des Métaux, F-38000 Grenoble, France
| | - Franc Meyer
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Sam P. de Visser
- Manchester Institute of Biotechnology and School of Chemical Engineering and Analytical Science, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Carole Duboc
- Université Grenoble Alpes, CNRS UMR 5250, DCM, F-38000 Grenoble, France
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39
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Meng J, Lei H, Li X, Qi J, Zhang W, Cao R. Attaching Cobalt Corroles onto Carbon Nanotubes: Verification of Four-Electron Oxygen Reduction by Mononuclear Cobalt Complexes with Significantly Improved Efficiency. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00213] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jia Meng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Haitao Lei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Xialiang Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Jing Qi
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Rui Cao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
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40
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Hooe SL, Machan CW. Dioxygen Reduction to Hydrogen Peroxide by a Molecular Mn Complex: Mechanistic Divergence between Homogeneous and Heterogeneous Reductants. J Am Chem Soc 2019; 141:4379-4387. [PMID: 30712355 DOI: 10.1021/jacs.8b13373] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The selective electrocatalytic reduction of dioxygen (O2) to hydrogen peroxide (H2O2) could be an alternative to the anthraquinone process used industrially, as well as enable the on-demand production of a useful chemical oxidant, obviating the need for long-term storage. There are challenges associated with this, since the two-proton/two-electron reduction of H2O2 to two equivalents of water (H2O) or disproportionation to O2 and H2O can be competing reactions. Recently, we reported a Mn(III) Schiff base-type complex, Mn(tbudhbpy)Cl, where 6,6'-di(3,5-di- tert-butyl-2-phenolate)-2,2'-bipyridine = [tbudhbpy]2-, which is active for the electrocatalytic reduction of O2 to H2O2 (ca. 80% selectivity). The less-than-quantitative selectivity could be attributed in part to a thermal disproportionation reaction of H2O2 to O2 and H2O. To understand the mechanism in greater detail, spectrochemical stopped-flow and electrochemical techniques were employed to examine the catalytic rate law and kinetic reaction parameters. Under electrochemical conditions, the catalyst produces H2O2 by an ECCEC mechanism with appreciable rates down to overpotentials of 20 mV and exhibits a catalytic response with a strong dependence on proton donor p Ka. Mechanistic studies suggest that under spectrochemical conditions, where the homogeneous reductant decamethylferrocene (Cp*2Fe) is used, H2O2 is instead produced via a disproportionation pathway, which does not show a strong acid dependence. These results demonstrate that differences in mechanistic pathways can occur for homogeneous catalysts in redox processes, dependent on whether an electrode or homogeneous reductant is used.
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Affiliation(s)
- Shelby L Hooe
- Department of Chemistry , University of Virginia , PO Box 400319, Charlottesville , Virginia 22904-4319 , United States
| | - Charles W Machan
- Department of Chemistry , University of Virginia , PO Box 400319, Charlottesville , Virginia 22904-4319 , United States
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41
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Huang ZH, Xie NH, Zhang M, Xu BQ. Nonpyrolyzed Fe-N Coordination-Based Iron Triazolate Framework: An Efficient and Stable Electrocatalyst for Oxygen Reduction Reaction. CHEMSUSCHEM 2019; 12:200-207. [PMID: 30339329 DOI: 10.1002/cssc.201801886] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/29/2018] [Indexed: 05/11/2023]
Abstract
Pyrolyzed base-metal-based metal-organic frameworks (MOFs) with FeNx coordination are emerging as nonprecious metal catalysts for electrochemical oxygen reduction reaction (ORR). However, surprisingly, nonpyrolyzed MOFs involving Fe-N coordination have not been explored for the ORR. This study concerns the catalytic performance of a semiconducting nonpyrolyzed iron triazolate framework (FeTa2 ) for ORR in alkaline electrolyte. The FeTa2 catalyst is studied as composites with different amounts of conductive Ketjenblack carbon (KB). The performance of these FeTa2 -x KB (x denotes the KB/FeTa2 weight ratio) composites by onset and half-wave potentials of ORR appears to be superior to most previously documented nonpyrolyzed MOFs. Characterization by elemental analysis, FTIR spectroscopy, XPS, and cyclic voltammetry suggest that N-FeIII -OH- sites at the surface of FeTa2 function as the catalytic active sites. This FeTa2 also shows very stable activity during ORR, as supported by accelerated durability test of the FeTa2 -x KB sample (20 000 cycles, ca. 90 h). The framework structure of FeTa2 remains intact during the durability test, which would help to explain its excellent catalytic durability. This would be the first study demonstrating efficient and stable ORR catalysis by a nonpyrolyzed Fe-N coordination-based MOF material.
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Affiliation(s)
- Zheng-Hong Huang
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Nan-Hong Xie
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Min Zhang
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Bo-Qing Xu
- Innovative Catalysis Program, Key Lab of Organic Optoelectronics & Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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42
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Sherbow TJ, Thompson EJ, Arnold A, Sayler RI, Britt RD, Berben LA. Electrochemical Reduction of N
2
to NH
3
at Low Potential by a Molecular Aluminum Complex. Chemistry 2018; 25:454-458. [DOI: 10.1002/chem.201804454] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Tobias J. Sherbow
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
| | - Emily J. Thompson
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
| | - Amela Arnold
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
| | - Richard I. Sayler
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
| | - R. David Britt
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
| | - Louise A. Berben
- Department of Chemistry University of California 1 Shields Ave Davis CA 95616 USA
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43
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Brodsky CN, Passard G, Ullman AM, Jaramillo DE, Bloch ED, Huynh M, Gygi D, Costentin C, Nocera DG. Oxygen activation at a dicobalt centre of a dipyridylethane naphthyridine complex. Dalton Trans 2018; 47:11903-11908. [PMID: 29942938 DOI: 10.1039/c8dt01598h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The mechanism of oxygen activation at a dicobalt bis-μ-hydroxo core is probed by the implementation of synthetic methods to isolate reaction intermediates. Reduction of a dicobalt(iii,iii) core ligated by the polypyridyl ligand dipyridylethane naphthyridine (DPEN) by two electrons and subsequent protonation result in the release of one water moiety to furnish a dicobalt(ii,ii) center with an open binding site. This reduced core may be independently isolated by chemical reduction. Variable-temperature 1H NMR and SQUID magnetometry reveal the reduced dicobalt(ii,ii) intermediate to consist of two low spin Co(ii) centers coupled antiferromagnetically. Binding of O2 to the open coordination site of the dicobalt(ii,ii) core results in the production of an oxygen adduct, which is proposed to be a dicobalt(iii,iii) peroxo. Electrochemical studies show that the addition of two electrons results in cleavage of the O-O bond.
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Affiliation(s)
- Casey N Brodsky
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
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44
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Wang YH, Goldsmith ZK, Schneider PE, Anson CW, Gerken JB, Ghosh S, Hammes-Schiffer S, Stahl SS. Kinetic and Mechanistic Characterization of Low-Overpotential, H2O2-Selective Reduction of O2 Catalyzed by N2O2-Ligated Cobalt Complexes. J Am Chem Soc 2018; 140:10890-10899. [DOI: 10.1021/jacs.8b06394] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Yu-Heng Wang
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Zachary K. Goldsmith
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Patrick E. Schneider
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Colin W. Anson
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - James B. Gerken
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Soumya Ghosh
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | | | - Shannon S. Stahl
- Department of Chemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
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45
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Passard G, Dogutan DK, Qiu M, Costentin C, Nocera DG. Oxygen Reduction Reaction Promoted by Manganese Porphyrins. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01944] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Guillaume Passard
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Dilek K. Dogutan
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Mengting Qiu
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Cyrille Costentin
- Laboratoire d’Electrochimie Moléculaire, Unité Mixte de Recherche Université - CNRS No. 7591, Bâtiment Lavoisier, Université Paris Diderot, Sorbonne Paris Cité, 15 rue Jean de Baïf, 75205 Paris Cedex 13, France
| | - Daniel G. Nocera
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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46
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47
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Bhunia S, Rana A, Roy P, Martin DJ, Pegis ML, Roy B, Dey A. Rational Design of Mononuclear Iron Porphyrins for Facile and Selective 4e -/4H + O 2 Reduction: Activation of O-O Bond by 2nd Sphere Hydrogen Bonding. J Am Chem Soc 2018; 140:9444-9457. [PMID: 29975839 DOI: 10.1021/jacs.8b02983] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Facile and selective 4e-/4H+ electrochemical reduction of O2 to H2O in aqueous medium has been a sought-after goal for several decades. Elegant but synthetically demanding cytochrome c oxidase mimics have demonstrated selective 4e-/4H+ electrochemical O2 reduction to H2O is possible with rate constants as fast as 105 M-1 s-1 under heterogeneous conditions in aqueous media. Over the past few years, in situ mechanistic investigations on iron porphyrin complexes adsorbed on electrodes have revealed that the rate and selectivity of this multielectron and multiproton process is governed by the reactivity of a ferric hydroperoxide intermediate. The barrier of O-O bond cleavage determines the overall rate of O2 reduction and the site of protonation determines the selectivity. In this report, a series of mononuclear iron porphyrin complexes are rationally designed to achieve efficient O-O bond activation and site-selective proton transfer to effect facile and selective electrochemical reduction of O2 to water. Indeed, these crystallographically characterized complexes accomplish facile and selective reduction of O2 with rate constants >107 M-1 s-1 while retaining >95% selectivity when adsorbed on electrode surfaces (EPG) in water. These oxygen reduction reaction rate constants are 2 orders of magnitude faster than all known heme/Cu complexes and these complexes retain >90% selectivity even under rate determining electron transfer conditions that generally can only be achieved by installing additional redox active groups in the catalyst.
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Affiliation(s)
- Sarmistha Bhunia
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A Raja SC Mullick Road , Kolkata , West Bengal 700032 , India
| | - Atanu Rana
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A Raja SC Mullick Road , Kolkata , West Bengal 700032 , India
| | - Pronay Roy
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A Raja SC Mullick Road , Kolkata , West Bengal 700032 , India
| | - Daniel J Martin
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States
| | - Michael L Pegis
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , United States
| | - Bijan Roy
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A Raja SC Mullick Road , Kolkata , West Bengal 700032 , India
| | - Abhishek Dey
- Department of Inorganic Chemistry , Indian Association for the Cultivation of Science , 2A Raja SC Mullick Road , Kolkata , West Bengal 700032 , India
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48
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Zahran ZN, Mohamed EA, Haleem AA, Naruta Y. Efficient Solar-Assisted O2
Reduction Using a Cofacial Iron Porphyrin Dimer Catalyst Integrated into a p-CuBi2
O4
Photocathode. Chemistry 2018; 24:10606-10611. [DOI: 10.1002/chem.201704143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Zaki N. Zahran
- Center for Chemical Energy Conversion Research; Institute for Science and Technology Research; Chubu University; Kasugai 487-8501 Japan
- Faculty of Science; Tanta University; Tanta 31527 Egypt
| | - Eman A. Mohamed
- Center for Chemical Energy Conversion Research; Institute for Science and Technology Research; Chubu University; Kasugai 487-8501 Japan
| | - Ashraf Abdel Haleem
- Center for Chemical Energy Conversion Research; Institute for Science and Technology Research; Chubu University; Kasugai 487-8501 Japan
- Department of Engineering Mathematics and Physics; Faculty of Engineering; Fayoum University; Fayoum Egypt
| | - Yoshinori Naruta
- Center for Chemical Energy Conversion Research; Institute for Science and Technology Research; Chubu University; Kasugai 487-8501 Japan
- JST ACT-C, Kawaguchi; Saitama 332-0012 Japan
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49
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Miner EM, Wang L, Dincă M. Modular O 2 electroreduction activity in triphenylene-based metal-organic frameworks. Chem Sci 2018; 9:6286-6291. [PMID: 30123483 PMCID: PMC6063138 DOI: 10.1039/c8sc02049c] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/24/2018] [Indexed: 12/04/2022] Open
Abstract
Electrically conductive layered metal–organic frameworks, regardless of the metal or chelating atom identity, exhibit phase-dependent catalytic activity for O2 electroreduction.
Triphenylene ligands hexasubstituted with amino or phenol groups afford two phases of electrically conductive layered two-dimensional metal–organic frameworks upon reaction with various metals. Regardless of the identity of the metal or chelating atom, π-stacking within the MOF layers is essential to achieve high electrical conductivity, redox activity, and catalytic activity.
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Affiliation(s)
- Elise M Miner
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA .
| | - Lu Wang
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA . .,Key Laboratory of Cluster Science , Ministry of Education of China , Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry , Beijing Institute of Technology , Beijing 100081 , P. R. China
| | - Mircea Dincă
- Department of Chemistry , Massachusetts Institute of Technology , Cambridge , Massachusetts 02139 , USA .
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50
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Zhang R, Zhang YC, Pan L, Shen GQ, Mahmood N, Ma YH, Shi Y, Jia W, Wang L, Zhang X, Xu W, Zou JJ. Engineering Cobalt Defects in Cobalt Oxide for Highly Efficient Electrocatalytic Oxygen Evolution. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01046] [Citation(s) in RCA: 309] [Impact Index Per Article: 51.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Rongrong Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Yong-Chao Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Guo-Qiang Shen
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Nasir Mahmood
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Yu-Hang Ma
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Yang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Wenyan Jia
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
| | - Li Wang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
| | - Wei Xu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, People’s Republic of China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, People’s Republic of China
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