Addressing the OER/HER imbalance by a redox transition-induced two-way electron injection in a bifunctional n–p–n electrode for excellent water splitting

2020 ◽  
Vol 8 (26) ◽  
pp. 13218-13230
Author(s):  
Hassan Anwer ◽  
Jae-Woo Park
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Electron Injection ◽  
Bifunctional Catalyst ◽  
Redox Transition ◽  
Catalyst Systems

n–p–n electrode follows a transistor's protocol to resolve imbalanced oxygen-/hydrogen-evolution in bifunctional catalyst systems.

A nitrogen-doped CoP nanoarray over 3D porous Co foam as an efficient bifunctional electrocatalyst for overall water splitting

2019 ◽  
Vol 7 (21) ◽  
pp. 13242-13248 ◽  
Author(s):  
Zong Liu ◽  
Xu Yu ◽  
Huaiguo Xue ◽  
Ligang Feng
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Bifunctional Catalyst ◽  
Bifunctional Electrocatalyst ◽  
Nitrogen Doped ◽  
Overall Water Splitting

A nitrogen-doped CoP nanoarray over 3D porous Co foam is proposed as a robust bifunctional catalyst for the hydrogen evolution reaction and oxygen evolution reaction in the overall water-splitting reaction.

Promoting photocatalytic hydrogen evolution over the perovskite oxide Pr0.5(Ba0.5Sr0.5)0.5Co0.8Fe0.2O3 by plasmon-induced hot electron injection

Nanoscale ◽  
2020 ◽  
Vol 12 (36) ◽  
pp. 18710-18720
Author(s):  
Zhishan Li ◽  
Qimeng Zhang ◽  
Jian-Gang Li ◽  
Huachuan Sun ◽  
Muk-Fung Yuen ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Electron Injection ◽  
Perovskite Oxide ◽  
Hot Electron ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Efficient ◽  
Hot Electron Injection

Exploration of highly efficient and stable photocatalysts for water splitting has attracted much attention.

Ni3Se2 film as a non-precious metal bifunctional electrocatalyst for efficient water splitting

2015 ◽  
Vol 5 (11) ◽  
pp. 4954-4958 ◽  
Author(s):  
Jinle Shi ◽  
Jianming Hu ◽  
Yonglan Luo ◽  
Xuping Sun ◽  
Abdullah M. Asiri
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Precious Metal ◽  
Bifunctional Catalyst ◽  
Alkaline Media ◽  
Bifunctional Electrocatalyst ◽  
Electrochemically Deposited ◽  
Cu Foam

In this communication, we report on the first use of Ni3Se2 film electrochemically deposited on Cu foam (Ni3Se2/CF) as a bifunctional catalyst for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) with good durability at alkaline media.

Ir4+-Doped NiFe LDH to expedite hydrogen evolution kinetics as a Pt-like electrocatalyst for water splitting

2018 ◽  
Vol 54 (49) ◽  
pp. 6400-6403 ◽  
Author(s):  
Qian-Qian Chen ◽  
Chun-Chao Hou ◽  
Chuan-Jun Wang ◽  
Xiao Yang ◽  
Rui Shi ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Bifunctional Catalyst ◽  
Initial Voltage

Electrocatalytic water splitting with a low initial voltage of 1.41 V was achieved by using Ir-doped NiFe-LDH as a bifunctional catalyst.

Mutually beneficial Co3O4@MoS2 heterostructures as a highly efficient bifunctional catalyst for electrochemical overall water splitting

2018 ◽  
Vol 6 (5) ◽  
pp. 2067-2072 ◽  
Author(s):  
Jia Liu ◽  
Jinsong Wang ◽  
Bao Zhang ◽  
Yunjun Ruan ◽  
Houzhao Wan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Low Cost ◽  
Bifunctional Catalyst ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts

Designing low-cost and highly efficient bifunctional electrocatalysts for compatible integration with the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) for overall water splitting is critical but challenging.

Semiconductor Photocatalysts for Solar-to-Hydrogen Energy Conversion: Recent Advances of CdS

2020 ◽  
Vol 16 ◽  
Author(s):  
Yuxue Wei ◽  
Honglin Qin ◽  
Jinxin Deng ◽  
Xiaomeng Cheng ◽  
Mengdie Cai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Noble Metals ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Theoretical Design ◽  
Recent Developments

Introduction: Solar-driven photocatalytic hydrogen production from water splitting is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. In this review, recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. In particular, the factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Background: Photocatalytic hydrogen evolution from water splitting using photocatalyst semiconductors is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. Methods: This review summarizes the recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation. Results: Recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. The factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Conclusion: The state-of-the-art CdS for producing hydrogen from photocatalytic water splitting under visible light is discussed. The future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are also described.

scholarly journals A structurally versatile nickel phosphite acting as a robust bifunctional electrocatalyst for overall water splitting

2018 ◽  
Vol 11 (5) ◽  
pp. 1287-1298 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Chakadola Panda ◽  
Stefan Loos ◽  
Florian Bunschei-Bruns ◽  
Carsten Walter ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting

The mechanistically distinct and synergistic role of phosphite anions in hydrogen evolution and nickel cations in oxygen evolution have been uncovered for active and durable overall water splitting catalysis in nickel phosphite.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

scholarly journals Wittichenite semiconductor of Cu3BiS3 films for efficient hydrogen evolution from solar driven photoelectrochemical water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Dingwang Huang ◽  
Lintao Li ◽  
Kang Wang ◽  
Yan Li ◽  
Kuang Feng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Low Cost ◽  
Solar Hydrogen ◽  
Onset Potential ◽  
Term Stability ◽  
Long Term Stability ◽  
Solar Water Splitting ◽  
Current Densities

AbstractA highly efficient, low-cost and environmentally friendly photocathode with long-term stability is the goal of practical solar hydrogen evolution applications. Here, we found that the Cu3BiS3 film-based photocathode meets the abovementioned requirements. The Cu3BiS3-based photocathode presents a remarkable onset potential over 0.9 VRHE with excellent photoelectrochemical current densities (~7 mA/cm2 under 0 VRHE) and appreciable 10-hour long-term stability in neutral water solutions. This high onset potential of the Cu3BiS3-based photocathode directly results in a good unbiased operating photocurrent of ~1.6 mA/cm2 assisted by the BiVO4 photoanode. A tandem device of Cu3BiS3-BiVO4 with an unbiased solar-to-hydrogen conversion efficiency of 2.04% is presented. This tandem device also presents high stability over 20 hours. Ultimately, a 5 × 5 cm2 large Cu3BiS3-BiVO4 tandem device module is fabricated for standalone overall solar water splitting with a long-term stability of 60 hours.

Chromium incorporated copper vanadate nano-materials for hydrogen evolution by water splitting

2021 ◽  
Author(s):  
Tahir Iqbal ◽  
Ali Hassan ◽  
Mohsin Ijaz ◽  
Muhammad Salim ◽  
Muhammad Farooq ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Nano Materials ◽  
Copper Vanadate
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