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Zhang B, Zhang N, Zhao G, Mu L, Liao W, Qiu S, Xu X. Regulation of electron density redistribution for efficient alkaline hydrogen evolution reaction and overall water splitting. J Colloid Interface Sci 2024; 665:1054-1064. [PMID: 38579388 DOI: 10.1016/j.jcis.2024.04.002] [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: 01/28/2024] [Revised: 03/27/2024] [Accepted: 04/01/2024] [Indexed: 04/07/2024]
Abstract
The rational design of morphology and heterogeneous interfaces for non-precious metal electrocatalysts is crucial in electrochemical water decomposition. In this paper, a bifunctional electrocatalyst (Ni/NiFe LDH), which coupling nickel with nickel-iron layer double hydroxide (NiFe LDH), is synthesized on carbon cloth. At current density of 10 mA cm-2, the Ni/NiFe LDH exhibits a low hydrogen evolution reaction (HER) overpotential of only 36 mV due to the accelerated electrolyte penetration, which is caused by superhydrophilic interface. Moreover, an alkaline electrolyzer is formed and provide a current density of 10 mA cm-2 with a voltage of only 1.49 V. It is confirmed by the density functional theory (DFT) that electron from the Ni layer is transferred to NiFe LDH layer, redistributing the local electron density around the heterogeneous phase interface. Thus, the Gibbs free energy for hydrogen adsorption is optimized. This work provides a promising strategy for the rational regulation of electrons at heterogeneous interfaces and the synthesis of flexible electrocatalysts.
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Affiliation(s)
- Baojie Zhang
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
| | - Ningning Zhang
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
| | - Gang Zhao
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China.
| | - Lan Mu
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
| | - Wenbo Liao
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
| | - Shipeng Qiu
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
| | - Xijin Xu
- School of Physics and Technology, University of Jinan, Jinan 250022, PR China
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Ma J, Zhao Q, Ye Z. An eco-friendly self-assembled catalyst preparation and study of tetracycline degradation: Performance, mechanism to application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 925:171768. [PMID: 38499103 DOI: 10.1016/j.scitotenv.2024.171768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/25/2024] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
Chloromethyl styrene resin can undergo specific chemical modifications and is an excellent adsorbent material for treating difficult-to-degrade substances in wastewater. In this study, chloromethyl styrene resin will be used as a carrier, and polystyrene chloromethyl resin (PS-Cl) was converted into PS-NH2 by amino modification. The self-assembly of cobalt-based metal-organic framework (CoMOF) was induced on the surface of PS-NH2 by using a novel preparation technique. The performance of the prepared PS-NH2@CoMOF self-assembled catalysts with core-shell-like structures in degrading the target pollutant, tetracycline (TC), was evaluated. The catalysts effectively induced rapid OH radical production from H2O2, had a degradation rate of as high as 88.3 % for 20 mg/L TC solution, and were highly stable and adaptable to aqueous environments. Free radicals and intermediates in the catalytic degradation process were detected by electron paramagnetic resonance and high-performance liquid chromatography mass spectrometry, and possible catalytic degradation pathways were analyzed. The catalytic dissociation behavior of H2O2 in the presence of different catalysts was studied in depth and compared with that of similar metal-organic framework materials through density-functional theory calculations. Results demonstrated the excellent performance of the PS-NH2@CoMOF catalysts. Finally, the catalysts' potential for use in practical engineering applications was evaluated with a flow column experimental model, and the results were more than satisfactory. Therefore, the use of the catalysts to degrade TC has great potential.
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Affiliation(s)
- Jinmao Ma
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
| | - Quanlin Zhao
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
| | - Zhengfang Ye
- Department of Environmental Engineering, Peking University, the Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
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Wang Y, Jiang D, Zhang Y, Chen J, Xie M, Du C, Wan L. Controlled preparation of cobalt carbonate hydroxide@nickel aluminum layered double hydroxide core-shell heterostructure for advanced supercapacitors. J Colloid Interface Sci 2024; 654:379-389. [PMID: 37847952 DOI: 10.1016/j.jcis.2023.10.059] [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: 08/04/2023] [Revised: 09/21/2023] [Accepted: 10/13/2023] [Indexed: 10/19/2023]
Abstract
Herein, we report the rational fabrication of unique core-shell nanoclusters composed of cobalt carbonate hydroxide (Co-CH) @ nickel aluminum layered double hydroxide (NiAl-LDH) on a carbon cloth (CC) substrate using a two-step hydrothermal strategy. The one-dimensional (1D) Co-CH nanowires core-shell functions as a framework for the growth of two-dimensional (2D) NiAl-LDH nanosheets, leading to the formation of a hierarchically porous core-shell heterostructure. The presence of abundant heterointerfaces enhances electrical conductivity, reduces charge transfer resistance, and facilitates ion/electron transfer. Taking full advantage of its unique nanostructure and synergistic effect of two components, the as-prepared Co-CH@NiAl-LDH hybrid material illustrates a specific capacity of 1029.4 C/g (2058.9 mC cm-2) at 1 A g-1 and good rate capability with a capacity retention of 68.5% at 20 A g-1. Additionally, the assembled Co-CH@NiAl-LDH//pine pollen-derived porous carbon (PPC) hybrid supercapacitor (HSC) delivers impressive energy and power densities of 66.2 Wh kg-1 (0.27 Wh cm-2) and 17529.7 Wh kg-1 (0.11 Wh cm-2), respectively. This device also achieves a superior capacity retention of 80.3% over 20,000 cycles. These findings prove the importance of engineering heterointerfaces in heterostructure for the promotion of energy storage performance.
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Affiliation(s)
- Yuqi Wang
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Dianyu Jiang
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Yan Zhang
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Jian Chen
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Mingjiang Xie
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Cheng Du
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China
| | - Liu Wan
- Hubei Key Lab for Processing and Application of Catalytic Materials, College of Chemical Engineering, Huanggang Normal University, Huanggang 437000, China.
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Lv C, Ren Y, Li B, Lu Z, Li L, Zhang X, Yang X, Yu X. 1,2,4-triazole-assisted metal-organic framework-derived nitrogen-doped carbon nanotubes with encapsulated Co 4N particles as bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries. J Colloid Interface Sci 2023; 645:618-626. [PMID: 37167911 DOI: 10.1016/j.jcis.2023.04.106] [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: 02/01/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/13/2023]
Abstract
The design of high-performance oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) dual-functional catalysts is not only important for the further applications of zinc-air batteries (ZABs) but also a major challenge in the field of energy conversion. The cheap 1,2,4-triazole (1,2,4-TZ) can be decomposed easily by heat, making it a high research value in carbon catalysts derived from metal-organic frameworks (MOFs). Here, Co4N particles encapsulated at the top of N-doped carbon nanotubes (Co4N@NCNTs) were conveniently prepared by 1,2,4-TZ-assisted pyrolysis of Co-MOF-74 for the first time. Owing to the excellent activity of Co4N particles and the highly graphitized N-doped carbon nanotubes (NCNTs), Co4N@NCNTs obtained at 900 °C (Co4N@NCNT-900) exhibited astonishing catalytic performance in both ORR and OER, and high reversible oxygen bifunctional activity (ΔE = 0.685 V). Moreover, Co4N@NCNT-900 displayed a larger discharge power density (122 mW cm-2), a better specific capacity (811.8 mAh g-1), and more excellent durability during the ZAB test, implying that Co4N@NCNT-900 can act as a bifunctional high active catalyst in ZABs.
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Affiliation(s)
- Chenhao Lv
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Yangyang Ren
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Beibei Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Zunming Lu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Lanlan Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Xinghua Zhang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Xiaojing Yang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China
| | - Xiaofei Yu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China.
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Cong C, Ma H. Advances of Electroactive Metal-Organic Frameworks. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207547. [PMID: 36631286 DOI: 10.1002/smll.202207547] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The preparation of electroactive metal-organic frameworks (MOFs) for applications of supercapacitors and batteries has received much attention and remarkable progress during the past few years. MOF-based materials including pristine MOFs, hybrid MOFs or MOF composites, and MOF derivatives are well designed by a combination of organic linkers (e.g., carboxylic acids, conjugated aromatic phenols/thiols, conjugated aromatic amines, and N-heterocyclic donors) and metal salts to construct predictable structures with appropriate properties. This review will focus on construction strategies of pristine MOFs and hybrid MOFs as anodes, cathodes, separators, and electrolytes in supercapacitors and batteries. Descriptions and discussions follow categories of electrochemical double-layer capacitors (EDLCs), pseudocapacitors (PSCs), and hybrid supercapacitors (HSCs) for supercapacitors. In contrast, Li-ion batteries (LIBs), Lithium-sulfur batteries (LSBs), Lithium-oxygen batteries (LOBs), Sodium-ion batteries (SIBs), Sodium-sulfur batteries (SSBs), Zinc-ion batteries (ZIBs), Zinc-air batteries (ZABs), Aluminum-sulfur batteries (ASBs), and others (e.g., LiSe, NiZn, H+ , alkaline, organic, and redox flow batteries) are categorized for batteries.
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Affiliation(s)
- Cong Cong
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University, 30 South Puzhu Road, Nanjing, 21186, China
| | - Huaibo Ma
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University, 30 South Puzhu Road, Nanjing, 21186, China
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