The van der Waals CdO/PtS2 heterostructures for photocatalytic water splitting with excellent carrier separation and light absorption

2021 ◽  
Author(s):  
Iqtidar Ahmad ◽  
Ismail Shahid ◽  
Anwar Ali ◽  
Shakeel Zeb ◽  
Lei Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Fossil Fuels ◽  
Van Der Waals ◽  
Environmental Issues ◽  
Photocatalytic Water Splitting ◽  
The Core ◽  
Carrier Separation

To overcome the regular exhaustion of fossil fuels and environmental issues, the hydrogen creation by photocatalytic water splitting has turn into the core heart of modern research. Here, the van...

A direct Z-scheme PtS2/arsenene van der Waals heterostructure with high photocatalytic water splitting efficiency

Nanoscale ◽  
2020 ◽  
Vol 12 (33) ◽  
pp. 17281-17289 ◽  
Author(s):  
Kai Ren ◽  
Wencheng Tang ◽  
Minglei Sun ◽  
Yongqing Cai ◽  
Yuan Cheng ◽  
...  
Keyword(s):  
Solar Energy ◽  
Water Splitting ◽  
Energy Input ◽  
Van Der Waals ◽  
Environmental Issues ◽  
Great Promise ◽  
Photocatalytic Water Splitting ◽  
Van Der Waals Heterostructure

To overcome current serious energy and environmental issues, photocatalytic water splitting holds great promise because it requires only solar energy as an energy input to produce hydrogen.

scholarly journals Rolling the WSSe Bilayer into Double-Walled Nanotube for the Enhanced Photocatalytic Water-Splitting Performance

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 705
Author(s):  
Lin Ju ◽  
Jingzhou Qin ◽  
Liran Shi ◽  
Gui Yang ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Density Functional ◽  
Transition Metal Dichalcogenides ◽  
Density Functional Theory Calculations ◽  
Stable Configuration ◽  
Photocatalytic Water Splitting ◽  
Stacking Pattern ◽  
Metal Dichalcogenides ◽  
Photocatalytic Performances ◽  
Carrier Separation

For the emerging Janus transition metal dichalcogenides (TMD) layered water-splitting photocatalysts, stacking the monolayers to form bilayers has been predicted to be an effective way to improve their photocatalytic performances. To achieve this, the stacking pattern plays an important role. In this work, by means of the density functional theory calculations, we comprehensively estimate energetical stability, light absorption and redox capacity of Janus WSSe bilayer with different stacking patterns. Unfortunately, the Janus WSSe bilayer with the most stable configuration recover the out-of-plane symmetry, which is not in favor of the photocatalytic reactions. However, rolling the Janus WSSe bilayer into double-walled nanotube could stabilize the appropriate stacking pattern with an enhanced instinct dipole moment. Moreover, the suitable band edge positions, high visible light absorbance, outstanding solar-to-hydrogen efficiency (up to 28.48%), and superior carrier separation promise the Janus WSSe double-walled nanotube the potential for the photocatalytic water-splitting application. Our studies not only predict an ideal water-splitting photocatalyst, but also propose an effective way to improve the photocatalytic performances of Janus layered materials.

Effects of doping on photocatalytic water splitting activities of PtS2/SnS2 van der Waals heterostructure

2021 ◽  
Author(s):  
Liang Zhu ◽  
Yu-Feng Ding ◽  
Wei-Jun Yang ◽  
Shuang-Feng Yin ◽  
Meng-Qiu Cai
Keyword(s):  
Water Splitting ◽  
High Efficiency ◽  
Van Der Waals ◽  
Environmental Problems ◽  
Photocatalytic Water Splitting ◽  
Promising Technology ◽  
Van Der Waals Heterostructure

Photocatalytic water splitting is a promising technology to solve serious energy and environmental problems. PtS2 monolayer is previously predicted to be a water splitting photocatalyst. But the high efficiency of...

Versatile two-dimensional silicon diphosphide (SiP2) for photocatalytic water splitting

Nanoscale ◽  
2018 ◽  
Vol 10 (14) ◽  
pp. 6369-6374 ◽  
Author(s):  
Sri Kasi Matta ◽  
Chunmei Zhang ◽  
Yalong Jiao ◽  
Anthony O'Mullane ◽  
Aijun Du
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Band Alignment ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Highly Efficient

Two-dimensional (2D) photocatalysts with excellent light absorption and favorable band alignment are critical for highly-efficient water splitting.

Ferroelectricity in 2D metal phosphorous trichalcogenides and van der Waals heterostructures for photocatalytic water splitting

2020 ◽  
Author(s):  
Sheng Huang ◽  
Zhigang Shuai ◽  
Dong Wang
Keyword(s):  
Water Splitting ◽  
Van Der Waals ◽  
Van Der Waals Heterostructures ◽  
Photocatalytic Water Splitting

Integration of ferroelectricity into van der Waals heterostructures offers additional opportunities to control over the properties and functionalities of heterostructures by switching the direction of the polarization via an external...

Zr doped mesoporous LaTaON2 for efficient photocatalytic water splitting

2019 ◽  
Vol 7 (10) ◽  
pp. 5702-5711 ◽  
Author(s):  
Yawei Wang ◽  
Shu Jin ◽  
Guoxiang Pan ◽  
Zuxin Li ◽  
Long Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Visible Light Absorption ◽  
Photocatalytic Water Splitting ◽  
Photocatalytic Activities

Zr doping maintains the visible light absorption of LaTaON2 and contributes to enhanced photocatalytic activities for water splitting.

scholarly journals Recent Advances in WS2 and Its Based Heterostructures for Water-Splitting Applications

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1283
Author(s):  
Zeineb Thiehmed ◽  
Abdul Shakoor ◽  
Talal Altahtamouni
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
High Energy ◽  
Green Energy ◽  
High Energy Density ◽  
Photocatalytic Water Splitting ◽  
Prime Concern

The energy from fossil fuels has been recognized as a main factor of global warming and environmental pollution. Therefore, there is an urgent need to replace fossil fuels with clean, cost-effective, long-lasting, and environmentally friendly fuel to solve the future energy crisis of the world. Therefore, the development of clean, sustainable, and renewable energy sources is a prime concern. In this regard, solar energy-driven hydrogen production is considered as an overriding opening for renewable and green energy by virtue of its high energy efficiency, high energy density, and non-toxicity along with zero emissions. Water splitting is a promising technology for producing hydrogen, which represents a potentially and environmentally clean fuel. Water splitting is a widely known process for hydrogen production using different techniques and materials. Among different techniques of water splitting, electrocatalytic and photocatalytic water splitting using semiconductor materials have been considered as the most scalable and cost-effective approaches for the commercial production of sustainable hydrogen. In order to achieve a high yield of hydrogen from these processes, obtaining a suitable, efficient, and stable catalyst is a significant factor. Among the different types of semiconductor catalysts, tungsten disulfide (WS2) has been widely utilized as a catalytic active material for the water-splitting process, owing to its layered 2D structure and its interesting chemical, physical, and structural properties. However, WS2 suffers from some disadvantages that limit its performance in catalytic water splitting. Among the various techniques and strategies that have been constructed to overcome the limitations of WS2 is heterostructure construction. In this process, WS2 is coupled with another semiconducting material in order to facilitate the charge transfer and prevent the charge recombination, which will enhance the catalytic performance. This review aims to summarize the recent studies and findings on WS2 and its heterostructures as a catalyst in the electrocatalytic and photocatalytic water-splitting processes.

Sign in / Sign up

Export Citation Format

Share Document