Identifying dual functions of rGO in a BiVO4/rGO/NiFe-layered double hydroxide photoanode for efficient photoelectrochemical water splitting

2020 ◽  
Vol 8 (26) ◽  
pp. 13231-13240 ◽  
Author(s):  
Hua Chen ◽  
Songcan Wang ◽  
Jianzhong Wu ◽  
Xiacong Zhang ◽  
Jia Zhang ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Water Splitting ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Surface Reaction ◽  
Photocurrent Density ◽  
Surface Reaction Kinetics ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Dual Functions

To enhance surface reaction kinetics for oxygen evolution reaction, nanoporous BiVO4 photoanodes are modified by rGO and NiFe-layered double hydroxides, leading to an enhanced photocurrent density of 3.26 mA cm−2 under AM 1.5 G illumination.

Two-dimensional layered double hydroxide as a platform for electrocatalytic oxygen evolution

2021 ◽  
Author(s):  
Jie Yu ◽  
Feng Yu ◽  
Muk-Fung Yuen ◽  
Chundong Wang
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Essential Role ◽  
Two Dimensional ◽  
Double Hydroxide ◽  
Double Hydroxides

The Oxygen Evolution Reaction (OER) plays an essential role in hydrogen production for water splitting, metal-air secondary batteries, and artificial photosynthesis. Among the various OER catalysts, layered double hydroxides (LDHs)...

Spatial engineering of a Co(OH)x encapsulated p-Cu2S/n-BiVO4 photoanode: simultaneously promoting charge separation and surface reaction kinetics in solar water splitting

2019 ◽  
Vol 7 (12) ◽  
pp. 6747-6752 ◽  
Author(s):  
Bing He ◽  
Yang Wang ◽  
Xueqin Liu ◽  
Yinchang Li ◽  
Xiaoqin Hu ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Water Splitting ◽  
Charge Separation ◽  
Surface Reaction ◽  
Separation Efficiency ◽  
Photocurrent Density ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Charge Separation Efficiency ◽  
Surface Reaction Kinetics

An ultrathin Co(OH)x coated p-Cu2S/n-BiVO4 heterojunction photoanode with improved charge separation efficiency was prepared, showing a photocurrent density of 3.51 mA cm−2.

Stabilizing Oxygen Intermediates on Redox-Flexible Active Sites in Multimetallic Ni-Fe-Al-Co Layered Double Hydroxide Anodes for Excellent Alkaline and Seawater Electrolysis

2021 ◽  
Author(s):  
Enhbayar Enhtuwshin ◽  
Kang Min Kim ◽  
Young-Kwang Kim ◽  
Sungwook Mhin ◽  
So Jung Kim ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Oxygen Intermediates ◽  
Nickel Iron ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Seawater Electrolysis

Development of an efficient and stable electrocatalyst for oxygen evolution reaction (OER) is crucial to make hydrogen generated via water splitting as a sustainable fuel. Nickel iron layered double hydroxides...

Boosting Oxygen Evolution Activity of NiFe-LDH Enabled by Oxygen Vacancy and Morphological Engineering

2021 ◽  
Author(s):  
ShuXuan Liu ◽  
Huiwen Zhang ◽  
Enlai Hu ◽  
Tuyuan Zhu ◽  
ChunYan Zhou ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Oxidation Process ◽  
Double Hydroxides

The sluggish kinetics and four electron oxidation process of oxygen evolution reaction (OER) limit the application of water splitting. Recently, NiFe-layered double hydroxides (NiFe LDHs) have shown great potential to...

A highly efficient and durable water splitting system: platinum sub-nanocluster functionalized nickel–iron layered double hydroxide as the cathode and hierarchical nickel–iron selenide as the anode

2019 ◽  
Vol 7 (6) ◽  
pp. 2831-2837 ◽  
Author(s):  
Qing Yan ◽  
Peng Yan ◽  
Tong Wei ◽  
Guiling Wang ◽  
Kui Cheng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Nickel Iron ◽  
Iron Selenide ◽  
Highly Efficient ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Splitting System

A highly-efficient water splitting device is assembled with the platinum sub-nanoclusters functionalized nickel iron layered double hydroxides and hierarchical nickel iron selenides.

Ultrasonication-assisted synthesis of ternary-component Ni3AlxFe1−x-layered double hydroxide nanoparticles for the oxygen evolution reaction in a neutral solution

2018 ◽  
Vol 42 (16) ◽  
pp. 13963-13970 ◽  
Author(s):  
Leila Jafari Foruzin ◽  
Biuck Habibi ◽  
Zolfaghar Rezvani
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Neutral Solution ◽  
Rapid Process ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Ternary Component ◽  
Layered Double Hydroxide Nanoparticles

In this study, ultrasonication, a facile and rapid process, was utilized for the preparation of ternary-component layered double hydroxides (LDHs), Ni3AlxFe1−x-LDHs, as the electrocatalyst material for the oxygen evolution reaction (OER) in a neutral solution.

scholarly journals Modulating the electronic structure of ultrathin layered double hydroxide nanosheets with fluorine: an efficient electrocatalyst for the oxygen evolution reaction

2019 ◽  
Vol 7 (24) ◽  
pp. 14483-14488 ◽  
Author(s):  
Zhijuan Liu ◽  
Chung-Li Dong ◽  
Yu-Cheng Huang ◽  
Jiajie Cen ◽  
Haotian Yang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Plasma Etching ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Etching Technique ◽  
Double Hydroxide ◽  
Double Hydroxides

Herein, we effectively modulate the electronic structure of Co3Fe layered double hydroxides (LDHs) by F-doping using a CHF3-plasma etching technique.

scholarly journals Recent Advances in Self-Supported Layered Double Hydroxides for Oxygen Evolution Reaction

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-17 ◽  
Author(s):  
Libo Wu ◽  
Luo Yu ◽  
Xin Xiao ◽  
Fanghao Zhang ◽  
Shaowei Song ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Influential Factors ◽  
Future Research ◽  
Limiting Factor ◽  
Synthesis Methods ◽  
High Catalytic Activity ◽  
Double Hydroxides

Electrochemical water splitting driven by clean and sustainable energy sources to produce hydrogen is an efficient and environmentally friendly energy conversion technology. Water splitting involves hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), in which OER is the limiting factor and has attracted extensive research interest in the past few years. Conventional noble-metal-based OER electrocatalysts like IrO2 and RuO2 suffer from the limitations of high cost and scarce availability. Developing innovative alternative nonnoble metal electrocatalysts with high catalytic activity and long-term durability to boost the OER process remains a significant challenge. Among all of the candidates for OER catalysis, self-supported layered double hydroxides (LDHs) have emerged as one of the most promising types of electrocatalysts due to their unique layered structures and high electrocatalytic activity. In this review, we summarize the recent progress on self-supported LDHs and highlight their electrochemical catalytic performance. Specifically, synthesis methods, structural and compositional parameters, and influential factors for optimizing OER performance are discussed in detail. Finally, the remaining challenges facing the development of self-supported LDHs are discussed and perspectives on their potential for use in industrial hydrogen production through water splitting are provided to suggest future research directions.

Activating basal plane in NiFe layered double hydroxide by Mn2+ doping for efficient and durable oxygen evolution reaction

2018 ◽  
Vol 3 (5) ◽  
pp. 532-537 ◽  
Author(s):  
Daojin Zhou ◽  
Zhao Cai ◽  
Yin Jia ◽  
Xuya Xiong ◽  
Qixian Xie ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Basal Plane ◽  
Fe Sites ◽  
Double Hydroxide ◽  
Double Hydroxides

Reducing Mn2+ ions were doped to tailor the electronic structure of Ni and Fe sites in NiFe-layered double hydroxides.

scholarly journals Layered double hydroxide-based electrocatalysts for the oxygen evolution reaction: identification and tailoring of active sites, and superaerophobic nanoarray electrode assembly

2021 ◽  
Author(s):  
Daojin Zhou ◽  
Pengsong Li ◽  
Xiao Lin ◽  
Adam McKinley ◽  
Yun Kuang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Active Sites ◽  
Double Hydroxide ◽  
Double Hydroxides

Opportunities and challenges in tailoring layered double hydroxides and constructing them into superaerophobic nanoarray electrodes for an efficient oxygen evolution reaction

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