Coupling of self-healing atomic layer CoAl-LDH onto Mo:BiVO4 photoanode for fast surface charge transfer toward stable and high-performance water splitting

Zhong, Yi; Wu, Chenglin; Jia, Xiaofang; Sun, Sijia; Chen, Daimei; Yao, Wenqing; Ding, Hao; Zhang, Junying; Ma, Tianyi

doi:10.1016/j.cej.2023.142893

Cited by 39 publications

(7 citation statements)

References 47 publications

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“…For instance, metal oxides such as WO 3 and bismuth vanadate (BiVO 4 ) have shown promise owing to their visible-light-absorption capabilities. 123,124 Meanwhile, carbon-based materials such as g-C 3 N 4 and graphene have attracted attention for their excellent stability and catalytic activity.…”

Section: Fundamentals Of Water Splittingmentioning

confidence: 99%

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Heo,

Lee,

Yoon

2023

Mater. Chem. Front.

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Section: Fundamentals Of Water Splittingmentioning

confidence: 99%

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Heo,

Lee,

Yoon

2023

Mater. Chem. Front.

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“…The appropriate valence band edge of BiVO 4 can drive the oxidation of water. It exhibits nontoxicity and high stability. − …”

Section: Introductionmentioning

confidence: 99%

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH

Ding,

Wang,

Chu

et al. 2024

ACS Appl. Energy Mater.

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In order to solve the problem of slow water oxidation kinetics and charge complexation of the BiVO 4 photoanode, CeO 2 octahedral nanomaterials doped with different amounts of NaH 2 PO 4 (COP3) were synthesized by a hydrothermal method in one step. CeO 2based materials have been widely studied in the fields of organic catalysis, photocatalysis to decompose water, and photodegradation of organic pollutants, showing excellent photocatalytic properties. The heterostructure formed by MW:BVO and COP3 (doped with 0.002 g of NaH 2 PO 4 ) expands the light absorption range and accelerates the separation of the internal carriers. In order to further improve the photocatalytic performance, the MW:BVO/COP3@NiFeOOH (immersion time of 1 h and pH = 8, respectively) composite was prepared by introducing NiFeOOH. As a metal oxide coating additive, NiFeOOH can rapidly capture holes and effectively use these holes for water oxidation on the photoelectrode surface through a cyclic catalytic process. In addition, MW:BVO/COP3@NiFeOOH nanocomposites can effectively increase the active surface area and accelerate the interfacial charge transfer. The final prepared MW:BVO/COP3@NiFeOOH nanocomposites showed excellent photocurrent density (4.8 mA cm −2 at 1.23 V vs RHE) in LSV tests due to the efficient separation and transfer of photogenerated carriers. It can be seen that the interaction between MW:BVO, COP3, and NiFeOOH not only improves the performance of this new class of materials but also highlights the importance of COP3 as an important component worthy of further study.

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“…Layered double hydroxides (LDHs) can play several roles in heterogeneous catalysis such as intrinsic catalysts, catalyst supports, or catalyst precursors. In particular, considering their low cost, abundant resources, easy accessibility, high porosity, and unique structure, transition-metal-based LDHs have garnered significant attention as electrocatalytic materials. , On a microscopic scale, LDHs can be viewed as a layered porous structure assembled by the stacking of numerous two-dimensional (2D) nanosheets, which invariably offer a huge specific surface area. However, the inherent poor conductivity of LDH affects the electron-transfer ability.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting

Xu,

Wang,

Yang

et al. 2024

ACS Appl. Energy Mater.

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The electrolysis of water requires excess energy in the form of overpotential to overcome activation barriers due to the sluggish kinetics of both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). As an inexpensive bifunctional catalyst with noble-metal-like electrocatalytic properties, twodimensional layered double hydroxides (LDHs) have received considerable attention. Here, a simple electrodeposition method is proposed to synthesize a La-doped NiFe LDH (NiFeLa LDH) on a nickel foam. NiFeLa LDH exhibits excellent water splitting performance due to the synergistic effect of La and laminate metal, with the best overpotential of 399 mV for OER and 223 mV for HER at a current density of 50 mA cm −2 , along with excellent durability in alkaline solution tests for 24 h. The electrochemical performance analysis and other characterization results confirm that La doping can change the electronic structure of LDH laminates. According to density functional theory calculations, the remarkably enhanced catalytic performance of NiFeLa LDH is ascribed to the decrease in the activation energy of adsorbed oxygen due to the adsorption of hydroxide, making the transformation from *OH to *O the rate-determining step of the OER process with a four-electron mechanism. Additionally, the electrolyzer with NiFeLa LDH as both anode and cathode provides good stability as well as a reduced cell voltage of 1.921 V to provide a current density of 50 mA cm −2 . Overall, this study offers a simple, convenient, rapid, and environmentally friendly method for fabricating high-performance water splitting catalysts.

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Coupling of self-healing atomic layer CoAl-LDH onto Mo:BiVO4 photoanode for fast surface charge transfer toward stable and high-performance water splitting

Cited by 39 publications

References 47 publications

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH

Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting

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Coupling of self-healing atomic layer CoAl-LDH onto Mo:BiVO4 photoanode for fast surface charge transfer toward stable and high-performance water splitting

Cited by 39 publications

References 47 publications

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Heterostructured 2D material-based electro-/photo-catalysts for water splitting

Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO2 Coupled with Ultrathin NiFeOOH

Electrodeposition Fabrication of La-Doped NiFe Layered Double Hydroxide to Improve Conductivity for Efficient Overall Water Splitting

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Product

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Synergistic High-Efficiency Photoelectrochemical Water Splitting via Type-II Heterojunction MW:BVO/CeO₂ Coupled with Ultrathin NiFeOOH