Hierarchical Cu3P-based nanoarrays on nickel foam as efficient electrocatalysts for overall water splitting

Yang, Zhuojun; Tuo, Yongxiao; Lü, Qing; Chen, Chen; Liu, Mengshan; Liu, Bingyan; Duan, Xuezhi; Zhou, Yan; Zhang, Jun

doi:10.1016/j.gee.2020.09.002

Cited by 21 publications

(8 citation statements)

References 73 publications

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“…All in all, the excellent bifunctional activity and stability of Cu 3 P@CoFe-LDH/CF can be attributed to the following factors: (i) CF is an excellent conductive substrate suitable for optimizing the interaction between active centers and nanostructures, on which Cu(OH) 2 NWs are prepared to increase the specific surface area and lay the foundation for subsequent loading of CoFe-LDH materials . (ii) The loading of CoFe-LDH can be effectively regulated by controlling the deposition time, and the binder-free character of the self-supported catalyst is favorable for electron transfer between interfaces. ,, (iii) The intense electronic interactions between CoFe-LDH and Cu 3 P synergistically optimize the binding energy of the reaction intermediates, thus accelerating the reaction kinetics and improving the electrocatalytic efficiency. − …”

Section: Resultsmentioning

confidence: 99%

Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting

Sun

Huo

et al. 2023

ACS Appl. Energy Mater.

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A crucial requirement for overall water splitting (OWS) is the creation of highly active bifunctional electrocatalysts. In this study, a CoFe-LDH (LDH = layered double hydroxide) nanosheet is integrated on a Cu3P nanowire to form heterogeneous structure Cu3P@CoFe-LDH/CF. Studies prove that the formation of a p–n heterojunction between Cu3P and CoFe-LDH promotes the charge-transfer reaction. Due to the synergistic contribution of the heterogeneous structure, Cu3P@CoFe-LDH/CF displays promising electrocatalytic activity. The overpotentials of 293 mV at 100 mA cm–2 for oxygen evolution reaction and 181 mV at 100 mA cm–2 for hydrogen evolution reaction are achieved in 1 M KOH. In addition, the alkaline electrolyzer of Cu3P@CoFe-LDH/CF||Cu3P@CoFe-LDH/CF shows a low cell voltage of 1.45 V at 10 mA cm–2 as well as great stability for OWS. This work provides a facile method to enhance the electrocatalytic activity by constructing heterogeneous structures with p–n heterojunctions, which holds significant promise for application in renewable energy technology.

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Section: Resultsmentioning

confidence: 99%

Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting

Sun

Huo

et al. 2023

ACS Appl. Energy Mater.

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“…To investigate the valence change and distribution of copper elements, we characterized the unreacted copper foam, the copper foam after the first reaction, and the copper foam after the fifth reaction by XPS tests. As shown in Figure 5 a, two main peaks appear in the spectrum at binding energies of 932.6 eV and 952.54 eV, attributed to the Cu 2p3/2 and Cu 2p1/2 peaks of Cu 0 , respectively [ 47 ], and the binding energy peaks of 934.2 eV and 955.1 eV point to the Cu 2p3/2 and Cu 2p1/2 peaks of Cu 2+ , respectively. As shown in Figure 5 b,c, the Cu 2p3/2 and Cu 2p1/2 peaks attributed to Cu 0 are still evident, while the Cu 2p3/2 and Cu 2p1/2 peaks of divalent Cu gradually decrease.…”

Section: Resultsmentioning

confidence: 99%

Copper Foam as Active Catalysts for the Borylation of α, β-Unsaturated Compounds

Zheng

Liu

Meng

et al. 2022

IJMS

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The use of simple, inexpensive, and efficient methods to construct carbon–boron and carbon–oxygen bonds has been a hot research topic in organic synthesis. We demonstrated that the desired β-boronic acid products can be obtained under mild conditions using copper foam as an efficient heterogeneous catalyst. The structure of copper foam before and after the reaction was investigated by polarized light microscopy (PM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), and the results have shown that the structure of the catalyst copper foam remained unchanged before and after the reaction. The XPS test results showed that the Cu(0) content increased after the reaction, indicating that copper may be involved in the boron addition reaction. The specific optimization conditions were as follows: CH3COCH3 and H2O were used as mixed solvents, 4-methoxychalcone was used as the raw material, 8 mg of catalyst was used and the reaction was carried out at room temperature and under air for 10 h. The yield of the product obtained was up to 92%, and the catalytic efficiency of the catalytic material remained largely unchanged after five cycles of use.

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“…6c and Table S4 (ESI †). 4,66,[70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] As depicted in Fig. 6d, a current density of approximately 10 mA cm À2 can be achieved when the applied voltage is 1.54 V. The catalytic activity remained at 97.5% after continuous operation for 24 hours, as illustrated in Fig.…”

Section: Overall Water Splitting Performance In Alkaline Electrolytesmentioning

confidence: 99%

Constructing abundant interfaces by decorating MoP quantum dots on CoP nanowires to induce electronic structure modulation for enhanced hydrogen evolution reaction

et al. 2023

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Hierarchical Cu3P-based nanoarrays on nickel foam as efficient electrocatalysts for overall water splitting

Cited by 21 publications

References 73 publications

Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting

Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting

Copper Foam as Active Catalysts for the Borylation of α, β-Unsaturated Compounds

Constructing abundant interfaces by decorating MoP quantum dots on CoP nanowires to induce electronic structure modulation for enhanced hydrogen evolution reaction

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Hierarchical Cu3P-based nanoarrays on nickel foam as efficient electrocatalysts for overall water splitting

Cited by 21 publications

References 73 publications

Synergistic Coupling of CoFe-LDH Nanosheets with Cu3P Nanoarrays for Efficient Water Splitting

Synergistic Coupling of CoFe-LDH Nanosheets with Cu3P Nanoarrays for Efficient Water Splitting

Copper Foam as Active Catalysts for the Borylation of α, β-Unsaturated Compounds

Constructing abundant interfaces by decorating MoP quantum dots on CoP nanowires to induce electronic structure modulation for enhanced hydrogen evolution reaction

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Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting

Synergistic Coupling of CoFe-LDH Nanosheets with Cu₃P Nanoarrays for Efficient Water Splitting