Electronic structure regulation of cobalt oxide clusters for promoting photocatalytic hydrogen evolution

2022 ◽  
Author(s):  
Guowei Yang ◽  
Bo Yan ◽  
Yan He
Keyword(s):  
Electronic Structure ◽  
Cobalt Oxide ◽  
Hydrogen Evolution ◽  
Solar Light ◽  
Single Atom ◽  
Hydrogen Energy ◽  
Atomic Cluster ◽  
Water Decomposition ◽  
Photocatalytic Hydrogen Evolution ◽  
Structure Regulation

Photocatalysis for water decomposition under solar light is a promising route to produce clean hydrogen energy. Although both single atom catalysts (SACs) and atomic cluster catalysts are effective ways to...

scholarly journals Modulating electronic structure of metal-organic frameworks by introducing atomically dispersed Ru for efficient hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yamei Sun ◽  
Ziqian Xue ◽  
Qinglin Liu ◽  
Yaling Jia ◽  
Yinle Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Catalyst Design ◽  
Single Atom ◽  
Hydrogen Energy ◽  
Structure Of Metal ◽  
Metal Organic

AbstractDeveloping high-performance electrocatalysts toward hydrogen evolution reaction is important for clean and sustainable hydrogen energy, yet still challenging. Herein, we report a single-atom strategy to construct excellent metal-organic frameworks (MOFs) hydrogen evolution reaction electrocatalyst (NiRu0.13-BDC) by introducing atomically dispersed Ru. Significantly, the obtained NiRu0.13-BDC exhibits outstanding hydrogen evolution activity in all pH, especially with a low overpotential of 36 mV at a current density of 10 mA cm−2 in 1 M phosphate buffered saline solution, which is comparable to commercial Pt/C. X-ray absorption fine structures and the density functional theory calculations reveal that introducing Ru single-atom can modulate electronic structure of metal center in the MOF, leading to the optimization of binding strength for H2O and H*, and the enhancement of HER performance. This work establishes single-atom strategy as an efficient approach to modulate electronic structure of MOFs for catalyst design.

Modulating Electronic Structure of Metal-Organic Frameworks by Introducing Atomically Dispersed Ru for Efficient Hydrogen Evolution

2020 ◽  
Author(s):  
Yamei Sun ◽  
Ziqian Xue ◽  
Qinglin Liu ◽  
Yaling Jia ◽  
Yinle Li ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Metal Organic Frameworks ◽  
Catalyst Design ◽  
Single Atom ◽  
Hydrogen Energy ◽  
Structure Of Metal ◽  
Metal Organic

Abstract Developing high-performance electrocatalysts toward hydrogen evolution reaction is important for clean and sustainable hydrogen energy, yet still challenging. Herein, we report a single-atom strategy to construct excellent metal-organic frameworks (MOFs) hydrogen evolution reaction (HER) electrocatalyst (NiRu0.13-BDC, BDC: terephthalic acid) by introducing atomically dispersed Ru. Significantly, the obtained NiRu0.13-BDC exhibits outstanding HER activity in all pH, especially with a low overpotential of only 36 mV at a current density of 10 mA cm-2 in 1 M phosphate buffered saline (PBS) solution, which is comparable to commercial Pt/C. X-ray absorption fine structures and the density functional theory calculations reveal that introducing Ru single-atom can modulate electronic structure of metal center in the MOF, leading to the optimization of binding strength for H2O and H*, and the enhancement of HER performance. This work establishes single-atom strategy as an efficient approach to modulate electronic structure of MOFs for catalyst design.

Electronic structure manipulation of graphene dots for effective hydrogen evolution from photocatalytic water decomposition

Nanoscale ◽  
2018 ◽  
Vol 10 (22) ◽  
pp. 10721-10730 ◽  
Author(s):  
Ba-Son Nguyen ◽  
Yuan-Kai Xiao ◽  
Chun-Yan Shih ◽  
Van-Can Nguyen ◽  
Wei-Yang Chou ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Graphene Oxide ◽  
High Activity ◽  
Hydrogen Evolution ◽  
Charge Separation ◽  
Water Decomposition ◽  
Photocatalytic Hydrogen Evolution ◽  
Effective Hydrogen

Sulfur–nitrogen-codoping introduces quaternary-N to graphene-oxide dots to facilitate π-conjugation and charge separation, engendering high activity in photocatalytic hydrogen evolution.

scholarly journals Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Yingjie Yang ◽  
Yanhui Yu ◽  
Jing Li ◽  
Qingrong Chen ◽  
Yanlian Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Energy System ◽  
Structure Design ◽  
Single Atom ◽  
Research Progress ◽  
Pure Hydrogen ◽  
Hydrogen Energy ◽  
Practical Applications

AbstractThe investigation of highly effective, durable, and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is a prerequisite for the upcoming hydrogen energy society. To establish a new hydrogen energy system and gradually replace the traditional fossil-based energy, electrochemical water-splitting is considered the most promising, environmentally friendly, and efficient way to produce pure hydrogen. Compared with the commonly used platinum (Pt)-based catalysts, ruthenium (Ru) is expected to be a good alternative because of its similar hydrogen bonding energy, lower water decomposition barrier, and considerably lower price. Analyzing and revealing the HER mechanisms, as well as identifying a rational design of Ru-based HER catalysts with desirable activity and stability is indispensable. In this review, the research progress on HER electrocatalysts and the relevant describing parameters for HER performance are briefly introduced. Moreover, four major strategies to improve the performance of Ru-based electrocatalysts, including electronic effect modulation, support engineering, structure design, and maximum utilization (single atom) are discussed. Finally, the challenges, solutions and prospects are highlighted to prompt the practical applications of Ru-based electrocatalysts for HER.

Porphyrin-based Ti-MOFs conferred with single-atom Pt for enhanced photocatalytic hydrogen evolution and NO removal

2022 ◽  
Vol 428 ◽  
pp. 132045
Author(s):  
Huan Feng ◽  
Houfan Li ◽  
Xingyan Liu ◽  
Yumin Huang ◽  
Qian Pan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Single Atom ◽  
No Removal ◽  
Photocatalytic Hydrogen Evolution

Optimization of the facet structure of cobalt oxide catalysts for enhanced hydrogen evolution reaction

2020 ◽  
Vol 10 (4) ◽  
pp. 1040-1047 ◽  
Author(s):  
Minghong Wu ◽  
Shuqiang Ke ◽  
Wenqian Chen ◽  
Shaomei Zhang ◽  
Min Zhu ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxide Catalysts ◽  
Photocatalytic Hydrogen Evolution ◽  
Facet Structure

The three different exposed crystal planes of Co3O4 catalysts, in which the {112} and {011} planes with abundant Co3+ sites exhibited photocatalytic hydrogen evolution activity superior to that of the {001} plane.

BDC-Zn MOF sensitization by MO/MB adsorption for photocatalytic hydrogen evolution under solar light

2020 ◽  
Vol 109 ◽  
pp. 104950 ◽  
Author(s):  
Luis Ángel Alfonso Herrera ◽  
Paola Karen Camarillo Reyes ◽  
Ali M. Huerta Flores ◽  
Leticia Torres Martínez ◽  
José María Rivera Villanueva
Keyword(s):  
Hydrogen Evolution ◽  
Solar Light ◽  
Photocatalytic Hydrogen Evolution ◽  
Mb Adsorption
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