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Intriguing 3D micro-flower structure of Co1.11Te2 deposited on Te nanosheets showing an efficient bifunctional electrocatalytic property for overall water splitting. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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2
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Zhang R, Du X, Li S, Guan J, Fang Y, Li X, Dai Y, Zhang M. Application of heteroatom doping strategy in electrolyzed water catalytic materials. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Chen R, Yu X, Ye X, Li J, Hu B. Extractive–oxidative desulfurization of model fuels using imidazole-based dicationic ionic liquids as extractants. REACT CHEM ENG 2022. [DOI: 10.1039/d1re00372k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Desulfurization efficiency of bis-imidazole-based ionic liquids with different alkyl chain lengths.
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Affiliation(s)
- Ruwei Chen
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Xinyi Yu
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Xuran Ye
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Jingwen Li
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Bing Hu
- School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China
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Yan Y, Hou Y, Yu Z, Tu L, Qin S, Lan D, Chen S, Sun J, Wang S. B-doped graphene quantum dots implanted into bimetallic organic framework as a highly active and robust cathodic catalyst in the microbial fuel cell. CHEMOSPHERE 2022; 286:131908. [PMID: 34426285 DOI: 10.1016/j.chemosphere.2021.131908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/28/2021] [Accepted: 08/13/2021] [Indexed: 06/13/2023]
Abstract
Developing efficient and durable oxygen reduction reaction (ORR) cathodic catalysts plays an essential role in application of microbial fuel cells (MFCs). Herein, the B-doped graphene quantum dots implanted into bimetallic organic framework (BGQDs/MOF-t) are fabricated by a facile electro-deposition. Results show that, the in-situ growth of FeCoMOF on nickel foam can effectively assist construction of nanoflowers with compact connections, thus improves the conductivity. More importantly, this nano-network can serve as the template for the implantation of BGQDs through powerful interface of M-O-C bonding, avoiding π-π rearrangement and providing efficient charge transfer and abundant edge active sites. Benefitting from the enhanced electrode/electrolyte transport interface, abundant catalytic sites and low charge transfer resistance, the BGQDs/MOF-15 exhibits excellent ORR activity, superior to commercial Pt/C catalyst. In the MFC with the BGQDs/MOF-15 cathode, the maximum power density of 703.55 mW m-2 is achieved, which is 1.53 times of that of the Pt/C cathode. In addition, the BGQDs/MOF-15 cathode maintains great stability over 800 h, while that of Pt/C reduces to 61% of the initial voltage. This work opens new opportunities for developing efficient and durable MOF-derived ORR catalyst.
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Affiliation(s)
- Yimin Yan
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Lingli Tu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Shanming Qin
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Danquan Lan
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Shuo Chen
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Jiangli Sun
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Shuangfei Wang
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China; Guangxi Bossco Environmental Protection Technology Co., Ltd, 12 Kexin Road, Nanning, 530007, China
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Li J, Li Q, Chen Y, Lv S, Liao X, Yao Y. Size effects of Ag nanoparticle for N2 photofixation over Ag/g-C3N4: Built-in electric fields determine photocatalytic performance. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127053] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Park H, Park BH, Choi J, Kim S, Kim T, Youn YS, Son N, Kim JH, Kang M. Enhanced Electrochemical Properties and OER Performances by Cu Substitution in NiCo 2O 4 Spinel Structure. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1727. [PMID: 32878224 PMCID: PMC7558615 DOI: 10.3390/nano10091727] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/20/2022]
Abstract
In order to improve the electrochemical performance of the NiCo2O4 material, Ni ions were partially substituted with Cu2+ ions having excellent reducing ability. All of the electrodes were fabricated by growing the Ni1-xCuxCo2O4 electrode spinel-structural active materials onto the graphite felt (GF). Five types of electrodes, NiCo2O4/GF, Ni0.875Cu0.125Co2O4/GF, Ni0.75Cu0.25Co2O4/GF, Ni0.625Cu0.375Co2O4/GF, and Ni0.5Cu0.5Co2O4/GF, were prepared for application to the oxygen evolution reaction (OER). As Cu2+ ions were substituted, the electrochemical performances of the NiCo2O4-based structures were improved, and eventually the OER activities were also greatly increased. In particular, the Ni0.75Cu0.25Co2O4/GF electrode exhibited the best OER activity in a 1.0 M KOH alkaline electrolyte: the cell voltage required to reach a current density of 10 mA cm-2 was only 1.74 V (η = 509 mV), and a low Tafel slope of 119 mV dec-1 was obtained. X-ray photoelectron spectroscopy (XPS) analysis of Ni1-xCuxCo2O4/GF before and after OER revealed that oxygen vacancies are formed around active metals by the insertion of Cu ions, which act as OH-adsorption sites, resulting in high OER activity. Additionally, the stability of the Ni0.75Cu0.25Co2O4/GF electrode was demonstrated through 1000th repeated OER acceleration stability tests with a high faradaic efficiency of 94.3%.
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Affiliation(s)
- Hyerim Park
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Byung Hyun Park
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Jaeyoung Choi
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Seyeon Kim
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Taesung Kim
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Young-Sang Youn
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Namgyu Son
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
| | - Jae Hong Kim
- School of Chemical Engineering, College of Engineering, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea;
| | - Misook Kang
- Department of Chemistry, College of Natural Sciences, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea; (H.P.); (B.H.P.); (J.C.); (S.K.); (T.K.); (Y.-S.Y.)
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