Non-precious cobalt phthalocyanine-embedded iron ore electrocatalysts for hydrogen evolution reactions

2021 ◽  
Author(s):  
Keshavananda Prabhu CP ◽  
Shambhulinga Aralekallu ◽  
Veeresh A. Sajjan ◽  
Manjunatha Palanna ◽  
Sharath Kumar ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Energy Production ◽  
Iron Ore ◽  
Clean Energy ◽  
Cobalt Phthalocyanine ◽  
Hydrogen Evolution Reactions

Efficient water splitting reactions lead to sustainable hydrogen production, which is the fuel for fuel cell devices for clean energy production.

scholarly journals Methanol Reforming Processes for Fuel Cell Applications

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8442
Author(s):  
Konstantinos Kappis ◽  
Joan Papavasiliou ◽  
George Avgouropoulos
Keyword(s):  
Fuel Cell ◽  
Hydrogen Production ◽  
Steam Reforming ◽  
Energy Production ◽  
Clean Energy ◽  
High Concentration ◽  
Promoting Effect ◽  
Methanol Reforming ◽  
Catalytic Systems ◽  
Steam Reforming Of Methanol

Hydrogen production through methanol reforming processes has been stimulated over the years due to increasing interest in fuel cell technology and clean energy production. Among different types of methanol reforming, the steam reforming of methanol has attracted great interest as reformate gas stream where high concentration of hydrogen is produced with a negligible amount of carbon monoxide. In this review, recent progress of the main reforming processes of methanol towards hydrogen production is summarized. Different catalytic systems are reviewed for the steam reforming of methanol: mainly copper- and group 8-10-based catalysts, highlighting the catalytic key properties, while the promoting effect of the latter group in copper activity and selectivity is also discussed. The effect of different preparation methods, different promoters/stabilizers, and the formation mechanism is analyzed. Moreover, the integration of methanol steam reforming process and the high temperature–polymer electrolyte membrane fuel cells (HT-PEMFCs) for the development of clean energy production is discussed.

Boosting photocatalytic hydrogen production activity by microporous CuII-MOF nanoribbon decorated with Pt nanoparticles

2021 ◽  
Author(s):  
Lei Li ◽  
Yan Zhao ◽  
Qian Wang ◽  
Zheng-Yu Liu ◽  
Xiu-Guang Wang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Energy Production ◽  
Metal Organic Framework ◽  
Pt Nanoparticles ◽  
Hydrogen Energy ◽  
Photocatalytic Efficiency ◽  
Production Activity ◽  
Metal Organic

Improving the photocatalytic efficiency for hydrogen evolution from water splitting plays vital roles for the feasible applications of clean and sustainable hydrogen energy production. A crystalline microporous CuII-based metal-organic framework...

Metal-free photo- and electro-catalysts for hydrogen evolution reaction

2020 ◽  
Vol 8 (45) ◽  
pp. 23674-23698
Author(s):  
Tianhao Li ◽  
Tao Hu ◽  
Liming Dai ◽  
Chang Ming Li
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Energy Technology ◽  
Metal Free ◽  
Clean Energy Technology

Hydrogen production as very attractive clean energy technology has sparked the accelerated development of catalysts for the hydrogen evolution reaction (HER) towards efficient photo- and electrolytic water splitting.

scholarly journals A highly efficient electrocatalyst based on amorphous Pd–Cu–S material for hydrogen evolution reaction

2017 ◽  
Vol 5 (35) ◽  
pp. 18793-18800 ◽  
Author(s):  
Wence Xu ◽  
Shengli Zhu ◽  
Yanqin Liang ◽  
Zhenduo Cui ◽  
Xianjin Yang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Clean Energy ◽  
Highly Efficient ◽  
Hydrogen Evolution Reactions

Hydrogen evolution reactions (HER) through water splitting draws tremendous attention as a way for generating clean energy.

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.

Controllable synthesis of inorganic–organic Zn1−xCdxS-DETA solid solution nanoflowers and their enhanced visible-light photocatalytic hydrogen-production performance

2017 ◽  
Vol 46 (34) ◽  
pp. 11335-11343 ◽  
Author(s):  
Jiali Lv ◽  
Jinfeng Zhang ◽  
Kai Dai ◽  
Changhao Liang ◽  
Guangping Zhu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Production ◽  
Visible Light ◽  
Environmental Pollution ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Production Performance ◽  
Controllable Synthesis ◽  
Visible Light Photocatalytic ◽  
Energy Shortage

Sustainable photocatalytic hydrogen evolution (PHE) of water splitting has been utilized to solve the serious environmental pollution and energy shortage problems over the last decade.

Ru@N/S/TiO2/rGO: A High Performance HER Electrocatalyst Prepared by Dye-Sensitization

2021 ◽  
Author(s):  
Hai-Lang Jia ◽  
Jiao Zhao ◽  
Zhiyuan Wang ◽  
Rui-Xin Chen ◽  
Mingyun Guan
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Dye Sensitization ◽  
Production Methods

Hydrogen production from water-splitting is one of the most promising hydrogen production methods, the preparation of hydrogen evolution reaction (HER) catalyst is very important. Although Pt based materials have the...

Fe-Co-P multi-heterostructure arrays for efficient electrocatalytic water splitting

2021 ◽  
Author(s):  
Hanwen Xu ◽  
Jiawei Zhu ◽  
Pengyan Wang ◽  
Ding Chen ◽  
Chengtian Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Rational Design ◽  
Large Scale ◽  
High Efficiency ◽  
Bifunctional Catalysts

Rational design and construction of high-efficiency bifunctional catalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial for large-scale hydrogen production by water splitting. Herein, by a...

scholarly journals Mechanism for spontaneous oxygen and hydrogen evolution reactions on CoO nanoparticles

2019 ◽  
Vol 7 (12) ◽  
pp. 6708-6719 ◽  
Author(s):  
Kyoung-Won Park ◽  
Alexie M. Kolpak
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
High Efficiency ◽  
Applied Bias ◽  
Co Catalyst ◽  
Photocatalytic Water Splitting ◽  
Overall Water Splitting ◽  
Nanoparticle Suspensions ◽  
Hydrogen Evolution Reactions ◽  
Coo Nanoparticles

Overall photocatalytic water splitting with a high efficiency has recently been observed for CoO nanoparticle suspensions in the absence of an applied bias or co-catalyst. This study clarifies the mechanism of spontaneous overall water splitting with the prominent efficiency observed on the CoO nanoparticle.

scholarly journals Cobalt-Based Metal-Organic Frameworks and Their Derivatives for Hydrogen Evolution Reaction

2020 ◽  
Vol 8 ◽  
Author(s):  
Wenjuan Han ◽  
Minhan Li ◽  
Yuanyuan Ma ◽  
Jianping Yang
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Alternative Energy ◽  
Metal Organic Frameworks ◽  
Electrochemical Performances ◽  
Promising Alternative ◽  
Metal Organic ◽  
Electrochemical Water Splitting

Hydrogen has been considered as a promising alternative energy to replace fossil fuels. Electrochemical water splitting, as a green and renewable method for hydrogen production, has been drawing more and more attention. In order to improve hydrogen production efficiency and lower energy consumption, efficient catalysts are required to drive the hydrogen evolution reaction (HER). Cobalt (Co)-based metal-organic frameworks (MOFs) are porous materials with tunable structure, adjustable pores and large specific surface areas, which has attracted great attention in the field of electrocatalysis. In this review, we focus on the recent progress of Co-based metal-organic frameworks and their derivatives, including their compositions, morphologies, architectures and electrochemical performances. The challenges and development prospects related to Co-based metal-organic frameworks as HER electrocatalysts are also discussed, which might provide some insight in electrochemical water splitting for future development.

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