1
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Li G, Liu F, Ma W, Li H, Li S. Surface Modification of a Lignin-Derived Carbon-Supported Co-Based Metal/Oxide Nanostructure for Alkaline Water Splitting. Molecules 2023; 28:5648. [PMID: 37570618 PMCID: PMC10419879 DOI: 10.3390/molecules28155648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023] Open
Abstract
Exploring low-cost and eco-friendly bifunctional electrocatalysts of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline electrolytes is still highly desired, and is crucial for water electrolysis and sustainable hydrogen generation. In this work, we report a facile pyrolysis-oxidation strategy to convert by-product lignin into bifunctional OER/HER electrocatalysts (Co/Co3O4-NPC-400) composed of Co/Co3O4 anchored on N-doped carbon with a surface of rich oxygen vacancies and oxygen-containing groups. The co-pyrolysis of lignin and NH4Cl can achieve a N-doped carbon matrix with a hierarchical pore structure, while the air-annealing process can induce the formation of oxygen-containing groups and oxygen vacancies. Owing to its surface properties, hierarchical pore structure and multiple active components, the constructed Co/Co3O4-NPC-400 possesses bifunctional catalytic activity and superior stability for OER/HER, especially for unexpected OER activity with a high current density of about 320 mA∙cm-2 at a potential of 1.8 V (vs. RHE). Water electrolysis using Co/Co3O4-NPC-400 as both the anode and the cathode needs a cell voltage of 1.95 and 2.5 V to attain about 10 and 400 mA∙cm-2 in 1 M KOH. This work not only provides a general strategy for the preparation of carbon-supported electrocatalysts for water splitting, but also opens up a new avenue for the utilization of lignin.
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Affiliation(s)
- Guoning Li
- School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China; (F.L.); (W.M.)
| | | | | | - Hui Li
- School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China; (F.L.); (W.M.)
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2
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Qu H, Ma Y, Li X, Duan Y, Li Y, Liu F, Yu B, Tian M, Li Z, Yu Y, Li B, Lv Z, Wang L. Ternary alloy (FeCoNi) nanoparticles supported on hollow porous carbon with defects for enhanced oxygen evolution reaction. J Colloid Interface Sci 2023; 645:107-114. [PMID: 37146374 DOI: 10.1016/j.jcis.2023.04.122] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/20/2023] [Accepted: 04/23/2023] [Indexed: 05/07/2023]
Abstract
Low-cost non-noble metal nanoparticles are promising electrocatalysts that can catalyze oxygen evolution reaction (OER). Various factors such as poor activity and stability hinder the practical applications of these materials. The electroactivity and durability of the electrocatalysts can be improved by optimizing the morphology and composition of the materials. Herein, we report the successful synthesis of hollow porous carbon (HPC) catalysts loaded with ternary alloy (FeCoNi) nanoparticles (HPC-FeCoNi) for efficient OER. HPC is firstly synthesized by a facile carbon deposition method using the hierarchical porous zeolite ZSM-5 as the hard template. Numerous defects are generated on the carbon shell during the removal of zeolite template. Subsequently, FeCoNi alloy nanoparticles are supported on HPC by a sequence of impregnation and H2 reduction processes. The synergistic effect between carbon defects and FeCoNi alloy nanoparticles endows the catalyst with an excellent OER performance (low overpotential of 219 mV; Tafel slope of 60.1 mV dec-1) in a solution of KOH (1 M). A stable potential is maintained during the continuous operation over 72 h. The designed HPC-FeCoNi presents a platform for the development of electrocatalysts that can be potentially applied for industrial OER.
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Affiliation(s)
- Huiqi Qu
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yiru Ma
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology Qingdao, Shandong 266042, PR China
| | - Xiaolong Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yuhao Duan
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology Qingdao, Shandong 266042, PR China
| | - Yuan Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Feng Liu
- Biomedical Sensing Engineering Technology Research Center, Shandong University, Jinan 250100, PR China
| | - Bin Yu
- Biomedical Sensing Engineering Technology Research Center, Shandong University, Jinan 250100, PR China
| | - Minge Tian
- Scientific Green (Shandong) Environmental Technology Co. Ltd, Jining Economic Development Zone, Shandong Province 272499, PR China
| | - Zhenjiang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Yueqin Yu
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology Qingdao, Shandong 266042, PR China
| | - Bin Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
| | - Zhiguo Lv
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
| | - Lei Wang
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao 266042, PR China; College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
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3
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Qu H, Li B, Ma Y, Xiao Z, Lv Z, Li Z, Li W, Wang L. Defect-Enriched Hollow Porous Carbon Nanocages Enable Highly Efficient Chlorine Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2301359. [PMID: 37029536 DOI: 10.1002/adma.202301359] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/21/2023] [Indexed: 05/30/2023]
Abstract
Metal-free carbon-based catalysts are crucial for the electrocatalytic chlorine evolution reaction (CER) to reduce the usage of noble metals and industrial cost. However, the corresponding catalytic activity of high overpotential and low durability hinders their wide application. Here, a hollow porous carbon (HPC) nanocage with a controlled oxygen electronic state around designed carbon defects for CER activity is reported. Alkali etching can bring defects in zeolite with a hollow structure. In a hard template strategy, the type of carbon defects is directly related to etching degree of the zeolite template. More importantly, the oxygen atoms can be "borrowed" from the zeolite framework by the defective carbon. The electron density around unsaturated O atoms can be decreased on the minor defects in carbon compared with that on large defects which is favorable for the adsorption of Cl- . Consequently, the as-synthesized HPC nanocages with minor defects show excellent electrocatalytic performance for CER with a low overpotential of 94 mV at current density of 10 mA cm-2 with good stability, which is superior to the commercial precious metal catalyst of dimensionally stable anode (DSA), and the best in the reported carbon materials. The designed carbon materials provide an option for metal-free industrial catalysts with significant CER activities.
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Affiliation(s)
- Huiqi Qu
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Bin Li
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Yiru Ma
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Zhenyu Xiao
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Zhiguo Lv
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Zhenjiang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Wei Li
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai, Shanghai, 200433, P. R. China
| | - Lei Wang
- State Key Laboratory Base of Eco-Chemical Engineering, International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
- College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
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4
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Ejsmont A, Kadela K, Grzybek G, Darvishzad T, Słowik G, Lofek M, Goscianska J, Kotarba A, Stelmachowski P. Speciation of Oxygen Functional Groups on the Carbon Support Controls the Electrocatalytic Activity of Cobalt Oxide Nanoparticles in the Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5148-5160. [PMID: 36657620 PMCID: PMC9906611 DOI: 10.1021/acsami.2c18403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
The effective use of the active phase is the main goal of the optimization of supported catalysts. However, carbon supports do not interact strongly with metal oxides, thus, oxidative treatment is often used to enhance the number of anchoring sites for deposited particles. In this study, we set out to investigate whether the oxidation pretreatment of mesoporous carbon allows the depositing of a higher loading and a more dispersed cobalt active phase. We used graphitic ordered mesoporous carbon obtained by a hard-template method as active phase support. To obtain different surface concentrations and speciation of oxygen functional groups, we used a low-temperature oxygen plasma. The main methods used to characterize the studied materials were X-ray photoelectron spectroscopy, transmission electron microscopy, and electrocatalytic tests in the oxygen evolution reaction. We have found that the oxidative pretreatment of mesoporous carbon influences the speciation of the deposited cobalt oxide phase. Moreover, the activity of the electrocatalysts in oxygen evolution is positively correlated with the relative content of the COO-type groups and negatively correlated with the C═O-type groups on the carbon support. Furthermore, the high relative content of COO-type groups on the carbon support is correlated with the presence of well-dispersed Co3O4 nanoparticles. The results obtained indicate that to achieve a better dispersed and thus more catalytically active material, it is more important to control the speciation of the oxygen functional groups rather than to maximize their total concentration.
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Affiliation(s)
- Aleksander Ejsmont
- Department
of Chemical Technology, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614Poznań, Poland
| | - Karolina Kadela
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Gabriela Grzybek
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Termeh Darvishzad
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Grzegorz Słowik
- Department
of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031Lublin, Poland
| | - Magdalena Lofek
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Joanna Goscianska
- Department
of Chemical Technology, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614Poznań, Poland
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Paweł Stelmachowski
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
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5
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Plasma-Engineered cobalt nanoparticle encapsulated N-doped graphene nanoplatelets as High-performance Oxygen Reduction Reaction Electrocatalysts for Aluminum–air batteries. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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6
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Green synthesis of Co3O4 nanoparticles using psyllium husk (Plantago Ovata) and application as electrocatalyst for oxygen evolution reaction. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Zhong X, Wu W, Jie H, Jiang F. La 2CoO 4+δ perovskite-mediated peroxymonosulfate activation for the efficient degradation of bisphenol A. RSC Adv 2023; 13:3193-3203. [PMID: 36756419 PMCID: PMC9854630 DOI: 10.1039/d2ra07640c] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/14/2023] [Indexed: 01/22/2023] Open
Abstract
Sulfate radical-based technology has been considered as an efficient technology to remove pharmaceuticals and personal care products (PPCPs) with heterogeneous metal-mediated catalysts for the activation of peroxymonosulfate (PMS). In this study, La2CoO4+δ perovskite with Ruddlesden-Popper type structure was synthesised by the sol-gel method, which was employed in PMS activation. Different characteriazation technologies were applied for the characterization of La2CoO4+δ , such as SEM-EDX, XRD, and XPS technologies. A common organic compound, bisphenol A (BPA), is used as a target contaminant, and the effect impactors were fully investigated and explained. The results showed that when the dosage of La2CoO4+δ was 0.5 g L-1 and the concentration of PMS was 1.0 mM in neutral pH solution, about 91.1% degradation efficiency was achieved within 25 minutes. Quenching experiments were introduced in the system to verify the catalytic mechanism of PMS for the BPA degradation, proving the existence of superoxide, hydroxyl radicals and sulfate radicals, which are responsible for the catalytic degradation of BPA. Moreover, the reusability and stability of the catalyst were also conducted which showed good stability during the reaction. This work would improve the applications of A2BO4-type perovskites for activating PMS to degrade BPA.
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Affiliation(s)
- Xin Zhong
- Experimental and Practical Innovation Education Centre, Beijing Normal University at Zhuhai Zhuhai China +86-756-3621560.,College of Real Estate, Beijing Normal University, Zhuhai Zhuhai China
| | - Wenting Wu
- College of Real Estate, Beijing Normal University, ZhuhaiZhuhaiChina
| | - Haonan Jie
- College of Real Estate, Beijing Normal University, ZhuhaiZhuhaiChina
| | - Fubin Jiang
- Experimental and Practical Innovation Education Centre, Beijing Normal University at Zhuhai Zhuhai China +86-756-3621560
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8
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Zhang H, Wang F, Wang Y, Wei H, Zhang W, Cao R, Zheng H. Two-dimensional hollow carbon skeleton decorated with ultrafine Co3O4 nanoparticles for enhanced lithium storage. J Colloid Interface Sci 2022; 631:191-200. [DOI: 10.1016/j.jcis.2022.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 10/26/2022] [Accepted: 11/06/2022] [Indexed: 11/10/2022]
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9
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Recent advances in flexible supercapacitors. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05291-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Shah AA, Kumar M, Aftab U, Abro MI. Seawater‐Extracted MgO‐Doped Co
3
O
4
Composite for Electrochemical Water Splitting. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202100518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Awais Ali Shah
- Mehran University of Engineering and Technology Department of Metallurgy and Materials Engineering 76080 Jamshoro Sindh Pakistan
| | - Mukesh Kumar
- Mehran University of Engineering and Technology Department of Metallurgy and Materials Engineering 76080 Jamshoro Sindh Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology Department of Metallurgy and Materials Engineering 76080 Jamshoro Sindh Pakistan
| | - Muhammad Ishaque Abro
- Mehran University of Engineering and Technology Department of Metallurgy and Materials Engineering 76080 Jamshoro Sindh Pakistan
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11
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Hu Z, Hao L, Quan F, Guo R. Recent developments of Co3O4-based materials as catalysts for the oxygen evolution reaction. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01688a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The demand for the development of clean and efficient energy is becoming increasingly pressing due to depleting fossil fuels and environmental concerns.
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Affiliation(s)
- Zhenyu Hu
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Liping Hao
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
| | - Fan Quan
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
| | - Rui Guo
- School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
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12
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Li M, Fan L, Zhang Y, Li X, Liu S, Kang Z, Sun D. Constructing Porous Carbon Electrocatalysts from Cobalt Complex-Decorated Micelles of Mesoporous Silica for Oxygen Reduction/Evolution Reaction. Inorg Chem 2021; 60:14892-14903. [PMID: 34523919 DOI: 10.1021/acs.inorgchem.1c02268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The construction of a porous carbon structure with a high specific surface area is conducive to enhanced electrocatalytic activity due to the accessibility of active sites and improvement of the mass transfer. Herein, we explored the possibility of using micelles of mesoporous silica (MCM-48) as the carbon source to generate porous carbon under the confinement of MCM-48 channels. The complexes formed by Co2+ and 4,4'-bipyridine were in situ incorporated into the micelles to derive Co-related active sites (Co-Nx, Co, and Co3O4) for catalyzing the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). After pyrolysis in the N2 atmosphere and subsequent removal of the MCM-48 skeleton, the target porous carbon electrocatalyst was obtained, which exhibited promising performance for both ORR and OER and has great potential as the cathode material for Zn-air battery application. This work not only confirms the effectiveness of using the micelles of MCM-48 as the carbon source for preparing the porous carbon materials, but also provides a new platform for design and synthesis of structurally controllable materials for energy-related electrocatalytic applications.
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Affiliation(s)
- Mengfei Li
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Lili Fan
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Yuming Zhang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Xuting Li
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Shuo Liu
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zixi Kang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Daofeng Sun
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
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13
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Wu Y, Wang Y, Xiao Z, Li M, Ding Y, Qi ML. Electrocatalytic oxygen reduction by a Co/Co 3O 4@N-doped carbon composite material derived from the pyrolysis of ZIF-67/poplar flowers. RSC Adv 2021; 11:2693-2700. [PMID: 35424214 PMCID: PMC8693794 DOI: 10.1039/d0ra09615f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/03/2021] [Indexed: 01/07/2023] Open
Abstract
Catalysts used for the oxygen reduction reaction (ORR) are crucial to fuel cells. However, the development of novel catalysts possessing high activity at a low cost is very challenging. Recently, extensive research has indicated that nitrogen-doped carbon materials, which include nonprecious metals as well as metal-based oxides, can be used as excellent candidates for the ORR. Here, Co/Co3O4@N-doped carbon (NC) with a low cost and highly stable performance is utilized as an ORR electrocatalyst through the pyrolysis of an easily prepared physical mixture containing a cobalt-based zeolite imidazolate framework (ZIF-67 precursor) and biomass materials from poplar flowers. Compared with the pure ZIF-derived counterpart (Co@NC) and PL-bio-C, the as-synthesized electrocatalysts show significantly enhanced ORR activities. The essential roles of doped atoms (ZIF-67 precursor) in improving the ORR activities are discussed. Depending mainly on the formation of Co-Co3O4 active sites and abundant nitrogen-containing groups, the resulting Co/Co3O4@NC catalyst exhibits good electroactivity (onset and half-wave potentials: E onset = 0.94 V and E 1/2 = 0.85 V, respectively, and a small Tafel slope of 90 mV dec-1) compared to Co@NC and PL-bio-C and follows the 4-electron pathway with good stability and methanol resistance. The results of this study provide a reference for exploring cobalt-based N-doped biomass carbon for energy conversion and storage applications.
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Affiliation(s)
- Yanling Wu
- School of Transportation and Civil Engineering, Shandong Jiaotong University Ji'nan 250357 China
| | - Yanmin Wang
- School of Transportation and Civil Engineering, Shandong Jiaotong University Ji'nan 250357 China
| | - Zuoxu Xiao
- College of Science, China University of Petroleum (East China) Qingdao 266580 China
| | - Miantuo Li
- School of Transportation and Civil Engineering, Shandong Jiaotong University Ji'nan 250357 China
| | - Yongling Ding
- School of Transportation and Civil Engineering, Shandong Jiaotong University Ji'nan 250357 China
| | - Mei-Li Qi
- School of Transportation and Civil Engineering, Shandong Jiaotong University Ji'nan 250357 China
- Shandong Branden Medical Devices Co., Ltd Qihe 251100 China
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14
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Selvakumar K, Duraisamy V, Senthil Kumar SM. Activity manifestation via architectural manipulation by cubic silica-derived Co 3O 4 electrocatalysts towards bifunctional oxygen electrode performance. NEW J CHEM 2021. [DOI: 10.1039/d1nj02061g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A KIT-6-derived Co3O4 material demonstrates superior bifunctional activity due to its higher densities of Co3+ and Co2+ sites.
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Affiliation(s)
- Karuppiah Selvakumar
- Electroorganic and Materials Electrochemistry (EME) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630 003, Tamil Nadu, India
| | - Velu Duraisamy
- Electroorganic and Materials Electrochemistry (EME) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630 003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
| | - Sakkarapalayam Murugesan Senthil Kumar
- Electroorganic and Materials Electrochemistry (EME) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630 003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201 002, India
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