Construction of heterojunctions between ReS2 and twin crystal ZnxCd1-xS for boosting solar hydrogen evolution

2021 ◽  
Author(s):  
Luyan Guo ◽  
Guiyang Yu ◽  
Haitao Zhao ◽  
Chuanwang Xing ◽  
Yujia Hu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Charge Separation ◽  
Redox Reactions ◽  
Hydrogen Generation ◽  
Solar Hydrogen ◽  
Twin Crystal ◽  
Photocatalytic Hydrogen Generation ◽  
Highly Active ◽  
Surface Redox

Facilitating charge separation as well as surface redox reactions is considered to be an efficient way to improving semiconductor-based photocatalytic hydrogen generation. In this contribution, we developed a highly active...

scholarly journals Few-layered CuInP2S6 nanosheet with sulfur vacancy boosting photocatalytic hydrogen evolution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Peng Yu ◽  
Fengmei Wang ◽  
Jun Meng ◽  
Tofik Ahmed Shifa ◽  
Marshet Getaye Sendeku ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Sulfur Vacancy ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

Uniform few-layered CuInP2S6 nanosheets and microsheets were initially synthesized and utilized as photocatalysts towards photocatalytic hydrogen generation.

A multi-stacked hyperporous silicon flake for highly active solar hydrogen production

2016 ◽  
Vol 52 (67) ◽  
pp. 10221-10224 ◽  
Author(s):  
Youn Jeong Jang ◽  
Jaegeon Ryu ◽  
Dongki Hong ◽  
Soojin Park ◽  
Jae Sung Lee
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Chemical Reduction ◽  
Production Performance ◽  
Natural Clay ◽  
Solar Hydrogen ◽  
Highly Active ◽  
Selective Chemical ◽  
Solar Hydrogen Production

3D multi-stacked Si flakes have been successfully fabricatedviathe selective chemical reduction of natural clay on the strength of an inherently negative catalyst. Their solar-driven hydrogen production performance scored as the highest Si-based photocatalyst for hydrogen evolution with superior stability.

Carbon-encapsulated multi-phase nanocomposite of W2C@WC1−x as a highly active and stable electrocatalyst for hydrogen generation

Nanoscale ◽  
2018 ◽  
Vol 10 (45) ◽  
pp. 21123-21131 ◽  
Author(s):  
Inha Kim ◽  
Sung-Woo Park ◽  
Dong-Wan Kim
Keyword(s):  
Tungsten Carbide ◽  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Highly Active ◽  
New Strategy ◽  
Multi Phase

A new strategy for the synthesis of carbon-encapsulated tungsten carbide nanoparticles is demonstrated for highly stable electrocatalysis for hydrogen evolution.

CdSe-sensitized branched CdS hierarchical nanostructures for efficient photoelectrochemical solar hydrogen generation

2016 ◽  
Vol 18 (16) ◽  
pp. 11460-11466 ◽  
Author(s):  
Zonghu Han ◽  
Meng Wang ◽  
Xiangyan Chen ◽  
Shaohua Shen
Keyword(s):  
Optical Absorption ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Photoelectrochemical Performance ◽  
Solar Hydrogen ◽  
Hierarchical Nanostructures

CdSe-sensitized branched CdS hierarchical nanostructures showed an improved photoelectrochemical performance for solar hydrogen generation as a result of the synergy of improved optical absorption and promoted charge separation.

An on-demand solar hydrogen-evolution system for unassisted high-efficiency pure-water splitting

2019 ◽  
Vol 7 (29) ◽  
pp. 17315-17323 ◽  
Author(s):  
Wei Che ◽  
Hui Su ◽  
Xu Zhao ◽  
Yuanli Li ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Charge Separation ◽  
High Efficiency ◽  
Pure Water ◽  
Evolution System ◽  
Solar Hydrogen ◽  
On Demand ◽  
Surface Hydroxylation

A surface hydroxylation structure of g-C3N3.5(O0.5H0.5) photocatalyst was designed to concurrently increase the toxicity resistance and maximize the charge separation for H2 evolution.

Hydroxyapatite-nanosphere supported ruthenium(0) nanoparticle catalyst for hydrogen generation from ammonia-borane solution: kinetic studies for nanoparticle formation and hydrogen evolution

RSC Advances ◽  
2014 ◽  
Vol 4 (55) ◽  
pp. 28947-28955 ◽  
Author(s):  
Halil Durak ◽  
Mehmet Gulcan ◽  
Mehmet Zahmakiran ◽  
Saim Ozkar ◽  
Murat Kaya
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Generation ◽  
Active Catalyst ◽  
Kinetic Studies ◽  
Ammonia Borane ◽  
Highly Active ◽  
Solution Kinetic ◽  
Hydrolysis Of ◽  
Nanoparticle Catalyst

Nanohydroxyapatite-supported ruthenium(0) nanoparticles formed in situ during the hydrolysis of AB have been found to be a highly active catalyst in the generation of hydrogen from aqueous AB solution.

scholarly journals A Facile and Waste-Free Strategy to Fabricate Pt-C/TiO2Microspheres: Enhanced Photocatalytic Performance for Hydrogen Evolution

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Hui Li ◽  
Xiaoyan Zhang ◽  
Xiaoli Cui
Keyword(s):  
Hydrogen Evolution ◽  
Photoelectron Spectroscopy ◽  
Hydrogen Generation ◽  
Synthesis Method ◽  
Diffraction Field ◽  
Light Illumination ◽  
Thermal Synthesis ◽  
X Ray ◽  
Photocatalytic Hydrogen Generation ◽  
Transmission Electron

A facile and waste-free flame thermal synthesis method was developed for preparing Pt modified C/TiO2microspheres (Pt-C/TiO2). The photocatalysts were characterized with X-ray diffraction, field emission scanning electron microscopy, transmission electron microscope, ultraviolet-visible (UV-vis) diffuse reflectance spectra, X-ray photoelectron spectroscopy, and thermogravimetry analysis. The photocatalytic activity was evaluated by hydrogen evolution from water splitting under UV-vis light illumination. Benefitting from the electron-hole separation behavior and reduced overpotential of H+/H2, remarkably enhanced hydrogen production was demonstrated and the photocatalytic hydrogen generation from 0.4 wt% Pt-C/TiO2increased by 22 times. This study also demonstrates that the novel and facile method is highly attractive, due to its easy operation, requiring no post treatment and energy-saving features.

scholarly journals Rational design of isostructural 2D porphyrin-based covalent organic frameworks for tunable photocatalytic hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rufan Chen ◽  
Yang Wang ◽  
Yuan Ma ◽  
Arindam Mal ◽  
Xiao-Ya Gao ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Rational Design ◽  
Hydrogen Generation ◽  
Structure Design ◽  
Molecular Engineering ◽  
Valuable Insight ◽  
Covalent Organic Frameworks ◽  
Structure Property ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic Hydrogen Generation

AbstractCovalent organic frameworks have recently gained increasing attention in photocatalytic hydrogen generation from water. However, their structure-property-activity relationship, which should be beneficial for the structural design, is still far-away explored. Herein, we report the designed synthesis of four isostructural porphyrinic two-dimensional covalent organic frameworks (MPor-DETH-COF, M = H2, Co, Ni, Zn) and their photocatalytic activity in hydrogen generation. Our results clearly show that all four covalent organic frameworks adopt AA stacking structures, with high crystallinity and large surface area. Interestingly, the incorporation of different transition metals into the porphyrin rings can rationally tune the photocatalytic hydrogen evolution rate of corresponding covalent organic frameworks, with the order of CoPor-DETH-COF < H2Por-DETH-COF < NiPor-DETH-COF < ZnPor-DETH-COF. Based on the detailed experiments and calculations, this tunable performance can be mainly explained by their tailored charge-carrier dynamics via molecular engineering. This study not only represents a simple and effective way for efficient tuning of the photocatalytic hydrogen evolution activities of covalent organic frameworks at molecular level, but also provides valuable insight on the structure design of covalent organic frameworks for better photocatalysis.

Iron polypyridyl catalysts assembled on metal oxide semiconductors for photocatalytic hydrogen generation

2018 ◽  
Vol 54 (26) ◽  
pp. 3290-3293 ◽  
Author(s):  
N. A. Race ◽  
W. Zhang ◽  
M. E. Screen ◽  
B. A. Barden ◽  
W. R. McNamara
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Hydrogen Generation ◽  
Metal Oxide Semiconductors ◽  
Oxide Semiconductors ◽  
Photocatalytic Hydrogen Generation ◽  
Highly Active

Iron-polypyridyl functionalized metal oxides are highly active for photocatalytic hydrogen generation.

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