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Amer MS, Arunachalam P, Al-Mayouf AM, AlSaleh AA, Almutairi ZA. Bifunctional vanadium doped mesoporous Co 3O 4 on nickel foam towards highly efficient overall urea and water splitting in the alkaline electrolyte. ENVIRONMENTAL RESEARCH 2023; 236:116818. [PMID: 37541414 DOI: 10.1016/j.envres.2023.116818] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/06/2023]
Abstract
Developing more active and stable electrode materials for oxygen evolution reaction (OER) and urea oxidation reaction (UOR) is necessary for electrocatalytic water and urea oxidation which can be used to generate hydrogen. Here, a low-cost vanadium-doped mesoporous cobalt oxide on Ni foam (V/meso-Co/NF) electrodes are obtained via the grouping of an in-situ citric acid (CA)-assisted evaporation-induced self-assembly (EISA) method and electrophoretic deposition process, and work as highly efficient and long-lasting electrocatalytic materials for OER/UOR. In particular, V/meso-Co/NF electrodes require 329 mV overpotential to maintain a 50 mA/cm2, with exceptional long-term durability of 30 h. Interestingly, V/meso-Co/NF also exhibits excellent electrocatalytic UOR performance, reaching 50 and 100 mA/cm2 versus RHE at low potentials of 1.34 and 1.35 V, respectively. By employing the V/meso-Co/NF materials as both the anode and cathode, this urea electrolysis assembly V/meso-Co/NF-5 (+,-) reaches current densities of 100 mA cm-2 at 1.62 V in KOH/urea, which is nearly 340 mV lesser than classical water electrolysis. The V/meso-Co/NF-5 electrocatalysts also exhibit remarkable durability for electrocatalytic OERs and UORs. The obtained findings revealed that the synthesized V/meso-Co/NF might be a promising electrode materials for overall urea-rich wastewater management and H2 generation from wastewater.
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Affiliation(s)
- Mabrook S Amer
- Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; K.A.CARE Energy Research and Innovation Center at Riyadh, King Saud University, Riyadh, Saudi Arabia.
| | - Prabhakarn Arunachalam
- Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abdullah M Al-Mayouf
- Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; K.A.CARE Energy Research and Innovation Center at Riyadh, King Saud University, Riyadh, Saudi Arabia
| | - Ahmad A AlSaleh
- Electrochemical Sciences Research Chair (ESRC), Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Zeyad A Almutairi
- K.A.CARE Energy Research and Innovation Center at Riyadh, King Saud University, Riyadh, Saudi Arabia; Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, 11421, Saudi Arabia
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Liu Z, He H, Liu Y, Zhang Y, Shi J, Xiong J, Zhou S, Li J, Fan L, Cai W. Soft-template derived Ni/Mo 2C hetero-sheet arrays for large current density hydrogen evolution reaction. J Colloid Interface Sci 2023; 635:23-31. [PMID: 36577352 DOI: 10.1016/j.jcis.2022.12.085] [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: 09/27/2022] [Revised: 12/13/2022] [Accepted: 12/18/2022] [Indexed: 12/25/2022]
Abstract
Practical structural design and electronic regulation are significant for synthesising efficient electrocatalysts. Therefore, a facile soft-template approach has been applied to successfully grow Ni/Mo2C heterojunction nanosheet arrays on nickel foam (NF) skeleton (NS-Ni/Mo2C@NF) using polyvinylpyrrolidone (PVP) as a soft template. The density functional theory (DFT) calculations reveal that abundant Ni/Mo2C heterojunction in NS-Ni/Mo2C@NF can provide many active sites with a moderate hydrogen adsorption free energy (ΔGH*, 0.037 eV). Benefiting from this nanosheet array structure and abundant Ni/Mo2C heterojunctions, the NS-Ni/Mo2C@NF catalyst can efficiently catalyze HER, especially at large current densities. As a result, only 151 and 271 mV overpotentials are needed to deliver 100 and 1000 mA/cm2 HER, respectively. More importantly, the hydrogen production testing with NS-Ni/Mo2C@NF as the working electrode can run stably for 500 h without activity decay under the current density of 500 mA/cm2 commonly used in industrial water electrolyzers, indicating that NS-Ni/Mo2C@NF has broad application prospects.
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Affiliation(s)
- Zhao Liu
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Huawei He
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yuxuan Liu
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yi Zhang
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Jiawei Shi
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Jie Xiong
- College of Chemistry, Chemical Engineering and Material Science, Zaozhuang University, Zaozhuang 277160, Shandong, China.
| | - Shunfa Zhou
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Jing Li
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Liyuan Fan
- College of Science and Engineering, James Cook University, 1 James Cook Drive, Townsville QLD 4811, Australia
| | - Weiwei Cai
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China; Zhejiang Institute, China University of Geosciences, Hangzhou 311305, China.
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3
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Huang X, He R, Wang S, Yang Y, Feng L. High-Valent Ni Species Induced by Inactive MoO 2 for Efficient Urea Oxidation Reaction. Inorg Chem 2022; 61:18318-18324. [DOI: 10.1021/acs.inorgchem.2c03498] [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)
- Xingyu Huang
- School of Chemistry and Chemical Engineering, Yangzhou University, No 180, Siwangting Road, Yangzhou225002, China
| | - Runze He
- School of Chemistry and Chemical Engineering, Yangzhou University, No 180, Siwangting Road, Yangzhou225002, China
- Nanomaterials and Chemistry Key Laboratory, Wenzhou University, Wenzhou325035, China
| | - Shuli Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, No 180, Siwangting Road, Yangzhou225002, China
| | - Yun Yang
- Nanomaterials and Chemistry Key Laboratory, Wenzhou University, Wenzhou325035, China
| | - Ligang Feng
- School of Chemistry and Chemical Engineering, Yangzhou University, No 180, Siwangting Road, Yangzhou225002, China
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Ma K, Wang H, Kannan P, Subramanian P. Ni 2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3633. [PMID: 36296823 PMCID: PMC9611741 DOI: 10.3390/nano12203633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/10/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
The electro-oxidation of urea (EOU) is a remarkable but challenging sustainable technology, which largely needs a reduced electro-chemical potential, that demonstrates the ability to remove a notable harmful material from wastewater and/or transform the excretory product of humans into treasure. In this work, an Ni2P-nanoparticle-integrated porous nickel oxide (NiO) hetero-structured nanosheet (Ni2P@NiO/NiF) catalyst was synthesized through in situ acid etching and a gas-phase phosphating process. The as-synthesized Ni2P@NiO/NiF catalyst sample was then used to enhance the electro-oxidation reaction of urea with a higher urea oxidation response (50 mA cm-2 at 1.31 V vs. RHE) and low onset oxidation potential (1.31 V). The enhanced activity of the Ni2P@NiO/NiF catalyst was mainly attributed to effective electron transport after Ni2P nanoparticle insertion through a substantial improvement in active sites due to a larger electrochemical surface area, and a faster diffusion of ions occurred via the interactive sites at the interface of Ni2P and NiO; thus, the structural reliability was retained, which was further evidenced by the low charge transfer resistance. Further, the Ni2P nanoparticle insertion process into the NiO hetero-structured nanosheets effectively enabled a synergetic effect when compared to the counter of the Ni2P/NiF and NiO/NiF catalysts. Finally, we demonstrate that the as-synthesized Ni2P@NiO/NiF catalyst could be a promising electrode for the EOU in urea-rich wastewater and human urine samples for environmental safety management. Overall, the Ni2P@NiO/NiF catalyst electrode combines the advantages of the Ni2P catalyst, NiO nanosheet network, and NiF current collector for enhanced EOU performance, which is highly valuable in catalyst development for environmental safety applications.
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Affiliation(s)
- Kun Ma
- Department of Internet, Jiaxing Vocational Technical College, Jiaxing 314001, China
| | - Hui Wang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
| | - Palanisamy Kannan
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, China
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Zhu J, Wu H, Gui K, Li Z, Zhang C, Wang J, Niu J. POMs@ZIF-8 derived transition metal carbides for urea electrolysis-assisted hydrogen generation. Chem Commun (Camb) 2022; 58:12503-12506. [DOI: 10.1039/d2cc02875a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transition metal carbide MoC@C and Ni/WC@C nanoparticles exhibit high catalytic activities for the hydrogen evolution reaction and urea oxidation reaction. Moreover, they showed high compatibility for hydrogen generation via urea electrolysis.
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Affiliation(s)
- Jianping Zhu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Haibo Wu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Kaige Gui
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Zhirong Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
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