ZnCo2S4 nanosheet array anchored on nickel foam as electrocatalyst for electrochemical water splitting

Song, Guotao; Wang, Zhichao; Sun, Junwei; Sun, Jiankun; Yuan, Ding; Zhang, Lixue

doi:10.1016/j.elecom.2019.106487

Cited by 32 publications

(8 citation statements)

References 30 publications

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“…3(g)). 14,23–41 The excellent OER activity of C 5 F 5 -NS can be related to its unique dendritic crystal structure effectively preventing the agglomeration of nanosheets, expanding the mass transfer channels, and providing more active edges and interfaces for the OER reaction.…”

Section: Resultsmentioning

confidence: 99%

“…3(g)). 14,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] The excellent OER activity of C 5 F 5 -NS can be related to its unique dendritic crystal structure effectively preventing the agglomeration of nanosheets, expanding the mass transfer channels, and providing more active edges and interfaces for the OER reaction. The Tafel slope is useful for studying the catalytic activity and charge transfer capacity, in which lower values represent higher charge transfer capacities.…”

Section: Papermentioning

confidence: 99%

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Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Cui

Zhang

et al. 2023

Dalton Trans.

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Section: Resultsmentioning

confidence: 99%

Section: Papermentioning

confidence: 99%

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Cui

Zhang

et al. 2023

Dalton Trans.

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“…[ 35 ] The peaks at 86.41 and 802.90 eV belong to satellite peaks. [ 36 ] Interestingly, the binding energies of elements in CdS tend to increase after recombination, while those in ZnCo 2 S 4 tend to decrease. The reason for this phenomenon is the change in electron cloud density caused by the interaction between CdS and ZnCo 2 S 4 .…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effect of Bimetallic Sulfide Enhances the Performance of CdS Photocatalytic Hydrogen Evolution

Jin

2022

Advanced Sustainable Systems

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from production to applications. Energy is an indispensable resource in modern society. Photocatalytic production of hydrogen energy conforms to the international definition of modern energy, and it is a reliable and sustainable modern energy. Continued research into photocatalytic hydrogen production technologies will contribute to the achievement of sustainable goals worldwide. However, there are still many problems to realize its industrialization at present, such as insufficient light absorbing ability and too fast recombination rate of photogenerated electrons. [11,12] In order to maximize the efficient conversion of solar energy, photocatalysts first need to satisfy two conditions: a broad solar light absorption range and a high photogenerated carrier separation and transfer efficiency. It is difficult for a single semiconductor photocatalyst to meet both of these conditions, [13] so the construction of multi-component composites has attracted extensive attention. [14] Composite catalysts with band matching can generally exhibit excellent performance in photocatalysis. [15,16] Methods such as metal or nonmetal doping, [17,18] construction of heterojunctions, [19] supported cocatalyst, [20] band gap, or morphology control are usually selected to enhance the photocatalytic activity of hydrogen production in order to solve these problems. [21] In recent years, CdS has attracted research interest due to its high hydrogen production activity. [22] It has a unique energy band structure and excellent chemical stability, and has been widely studied as a potential catalyst. [23,24] However, the small specific surface area, insufficient light absorption capacity, photocorrosion, and high electron-hole recombination rate have become factors restricting its practical application. [25,26] The construction of heterojunction is an effective method to enhance photogenerated carrier transfer to expand its application in the field of photocatalysis. In addition, developing new strategies to enhance the hydrogen evolution activity can provide more possibilities for expanding its application in the field of photocatalysis. [27,28] Unlike heterojunctions that enhance photogenerated carrier transfer, the synergistic effect of metal ions provides more hydrogen evolution sites for the catalyst. According to this line of thinking, the optimization of surface active sites is carried out simultaneously with the enhancement of carrier separation, providing more possibilities for the hydrogen evolution of catalysts.The noble metal-free cobalt-based sulfides have the advantages of narrow band gaps and good chemical stability, so they High photogenerated electron-hole recombination rates and insufficient light absorption capacity are the main factors restricting the development of photocatalytic hydrogen evolution. CdS as a potential photocatalyst also faces these problems. In this work, the composite bimetallic sulfide ZnCo 2 S 4 and CdS exhibits excellent photocatalytic hydrogen evolution capability. The synergistic effect of zinc ions...

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“…Therefore, they are widely used in agriculture, food analysis, environmental monitoring, biomedical detection, and other fields [5][6][7][8][9]. Among many non-enzymatic electrochemical sensing materials, transition metal sulfide materials (TMS) are widely used because of their low cost, low electronegativity, stable structure, and not easy to collapse [8][9][10][11][12][13][14][15]. Among them, polymetallic sulfide has been proven to be a promising electrode material because of its rich redox reactions and better electrochemical activity than single metal sulfide [15].…”

Section: Introductionmentioning

confidence: 99%

“…Among many non-enzymatic electrochemical sensing materials, transition metal sulfide materials (TMS) are widely used because of their low cost, low electronegativity, stable structure, and not easy to collapse [8][9][10][11][12][13][14][15]. Among them, polymetallic sulfide has been proven to be a promising electrode material because of its rich redox reactions and better electrochemical activity than single metal sulfide [15]. For example, Liu et al and Villian et al prepared Ni and Co bimetallic sulfides and applied them to electrochemical sensing.…”

Section: Introductionmentioning

confidence: 99%

Metal-organic framework derived porous hollow ZnCo₂S₄ improving electrocatalytic oxidation of glucose

Wang

Yan

Wang

et al. 2023

Mater. Res. Express

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In this paper, ZnCo2S4 nanomaterial with a unique structure was prepared by a simple hydrothermal method and applied to the field of electrochemical sensing. Based on the advantages of metal-organic frameworks (MOF) materials with large specific surface areas, multiple active centers, and synergistic effect of multi-metals, we choose Zn and Co bimetallic MOF as the precursor material and synthesized ZnCo2S4 nanomaterials with large specific surface area and multiple active centers after vulcanization. In addition, we verified the excellent electrochemical sensing performance of the prepared ZnCo2S4 nanomaterial through the catalytic oxidation experiment of glucose. The results showed that ZnCo2S4 nanomaterials with bimetallic MOF as precursor had higher electrocatalytic activity for glucose oxidation than ZnCo2S4 nanomaterials without precursor and single metal sulfide. Amperometric analysis of the fabricated sensor has shown an extremely low limit of detection (0.007 μM) and two linear range (3~9 μM) and （10~100 μM）for glucose. Therefore, we believe that the method of preparing polymetallic sulfides with MOF as a precursor is of great significance in electrochemical sensing.

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ZnCo2S4 nanosheet array anchored on nickel foam as electrocatalyst for electrochemical water splitting

Cited by 32 publications

References 30 publications

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Synergistic Effect of Bimetallic Sulfide Enhances the Performance of CdS Photocatalytic Hydrogen Evolution

Metal-organic framework derived porous hollow ZnCo₂S₄ improving electrocatalytic oxidation of glucose

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ZnCo2S4 nanosheet array anchored on nickel foam as electrocatalyst for electrochemical water splitting

Cited by 32 publications

References 30 publications

Active-site-enriched dendritic crystal Co/Fe-doped Ni3S2electrocatalysts for efficient oxygen evolution reaction

Active-site-enriched dendritic crystal Co/Fe-doped Ni3S2electrocatalysts for efficient oxygen evolution reaction

Synergistic Effect of Bimetallic Sulfide Enhances the Performance of CdS Photocatalytic Hydrogen Evolution

Metal-organic framework derived porous hollow ZnCo2S4 improving electrocatalytic oxidation of glucose

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Product

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Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Active-site-enriched dendritic crystal Co/Fe-doped Ni₃S₂electrocatalysts for efficient oxygen evolution reaction

Metal-organic framework derived porous hollow ZnCo₂S₄ improving electrocatalytic oxidation of glucose