Metal Chalcogenides Janus Monolayers for Efficient Hydrogen Generation by Photocatalytic Water Splitting

2019 ◽  
Vol 2 (2) ◽  
pp. 890-897 ◽  
Author(s):  
Rafael da Silva ◽  
Rafael Barbosa ◽  
Rosana Rabelo Mançano ◽  
Nathália Durães ◽  
Renato Borges Pontes ◽  
...  
Keyword(s):  
Water Splitting ◽  
Hydrogen Generation ◽  
Metal Chalcogenides ◽  
Photocatalytic Water Splitting

scholarly journals Recent Achievements in Development of TiO2-Based Composite Photocatalytic Materials for Solar Driven Water Purification and Water Splitting

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1338 ◽  
Author(s):  
Klara Perović ◽  
Francis M. dela Rosa ◽  
Marin Kovačić ◽  
Hrvoje Kušić ◽  
Urška Lavrenčič Štangar ◽  
...  
Keyword(s):  
Water Treatment ◽  
Transition Metal ◽  
Photocatalytic Degradation ◽  
Water Splitting ◽  
Water Purification ◽  
Degradation Mechanism ◽  
Living Environment ◽  
Solar Irradiation ◽  
Metal Chalcogenides ◽  
Photocatalytic Water Splitting

Clean water and the increased use of renewable energy are considered to be two of the main goals in the effort to achieve a sustainable living environment. The fulfillment of these goals may include the use of solar-driven photocatalytic processes that are found to be quite effective in water purification, as well as hydrogen generation. H2 production by water splitting and photocatalytic degradation of organic pollutants in water both rely on the formation of electron/hole (e−/h+) pairs at a semiconducting material upon its excitation by light with sufficient photon energy. Most of the photocatalytic studies involve the use of TiO2 and well-suited model compounds, either as sacrificial agents or pollutants. However, the wider application of this technology requires the harvesting of a broader spectrum of solar irradiation and the suppression of the recombination of photogenerated charge carriers. These limitations can be overcome by the use of different strategies, among which the focus is put on the creation of heterojunctions with another narrow bandgap semiconductor, which can provide high response in the visible light region. In this review paper, we report the most recent advances in the application of TiO2 based heterojunction (semiconductor-semiconductor) composites for photocatalytic water treatment and water splitting. This review article is subdivided into two major parts, namely Photocatalytic water treatment and Photocatalytic water splitting, to give a thorough examination of all achieved progress. The first part provides an overview on photocatalytic degradation mechanism principles, followed by the most recent applications for photocatalytic degradation and mineralization of contaminants of emerging concern (CEC), such as pharmaceuticals and pesticides with a critical insight into removal mechanism, while the second part focuses on fabrication of TiO2-based heterojunctions with carbon-based materials, transition metal oxides, transition metal chalcogenides, and multiple composites that were made of three or more semiconductor materials for photocatalytic water splitting.

Quaternary two dimensional Zn–Ag–In–S nanosheets for highly efficient photocatalytic hydrogen generation

2018 ◽  
Vol 6 (25) ◽  
pp. 11670-11675 ◽  
Author(s):  
Hao Chen ◽  
Xiao-Yuan Liu ◽  
Shizhuo Wang ◽  
Xu Wang ◽  
Qi Wei ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Water Splitting ◽  
Energy Production ◽  
Hydrogen Generation ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Highly Efficient ◽  
Photocatalytic Hydrogen Generation ◽  
Promising Strategy ◽  
Renewable Energy Production

Hydrogen generation based on photocatalytic water splitting is a promising strategy for renewable energy production.

Hydrogen Generation by Graphene Oxide–Alkylamine Hybrids through Photocatalytic Water Splitting

2014 ◽  
Vol 43 (4) ◽  
pp. 486-488 ◽  
Author(s):  
Yukino Ikeda ◽  
Mohammad Razaul Karim ◽  
Hiroshi Takehira ◽  
Kazuto Hatakeyama ◽  
Takeshi Matsui ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Photocatalytic Water Splitting

Two-dimensional layered Type-II MS2/BiOCl (M = Zr, Hf) van der Waals heterostructures: A promising photocatalysts for hydrogen generation

2021 ◽  
Author(s):  
Francis Opoku ◽  
Osei Akoto ◽  
Samuel Osei-Bonsu Oppong ◽  
Anthony Apeke Adimado
Keyword(s):  
Energy Storage ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Van Der Waals ◽  
H2 Production ◽  
Type Ii ◽  
Two Dimensional ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting ◽  
Van Der Waals Heterostructure

Sustainable hydrogen (H2) production via photocatalytic water splitting is considered the most promising energy storage, where two-dimensional van der Waals heterostructure, composed of two or more 2D monolayer materials, has...

A scalable and thin film approach for solar hydrogen generation: a review on enhanced photocatalytic water splitting

2021 ◽  
Author(s):  
Chinnakonda S. Gopinath ◽  
Naresh Nalajala
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Solar Hydrogen ◽  
Photocatalytic Water Splitting

How to improve solar hydrogen generation through a thin film approach has been reviewed with known photocatalysts.

scholarly journals Constructing Co3O4/g-C3N4 Ultra-Thin Nanosheets with Z-Scheme Charge Transfer Pathway for Efficient Photocatalytic Water Splitting

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3341
Author(s):  
Yuan Guo ◽  
Wanqing Liu ◽  
Wei Duan ◽  
Siyu Wang ◽  
Liqun Jia ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Catalytic Performance ◽  
Migration Ability ◽  
Co Catalyst ◽  
Photocatalytic Water Splitting ◽  
Significant Pathway ◽  
And Migration ◽  
Thin Nanosheets

Photocatalytic water splitting for hydrogen generation is a significant pathway for sustainable energy conversion and production. The photocatalysts with a Z-scheme water splitting charge transfer pathway is superior due to the good separation and migration ability of photoexcited charge carriers. Herein, Co3O4/g-C3N4 photocatalysts with Z-scheme charge transfer pathway were successfully constructed by an electrostatic interaction-annealing method. The as-prepared Co3O4/g-C3N4 ultra-thin nanosheets were tested and analyzed by XRD, EA, ICP, SEM, TEM, AFM, XPS, UV-Vis DRS, PL and photoelectrochemical measurements. Moreover, the influences of fabrication parameters on performance of Co3O4/g-C3N4 catalysts were investigated, and 0.5% Co3O4/g-C3N4 exhibited the optimal activity. Based on the characterization and catalytic performance, the Z-scheme charge transfer pathway of Co3O4/g-C3N4 was established and put forward. To further improve the catalytic performance of Co3O4/g-C3N4, 0.5% Pt was added as a co-catalyst. The obtained Pt/0.5% Co3O4/g-C3N4 was recyclable and remained the original catalytic water splitting performance within 20 h. The modification of Co3O4 and Pt improved the separation and migration of e− and h+, and induced the increased hydrogen evolution rate of g-C3N4.

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