Enhancing electrocatalytic water splitting by surface defect engineering in two-dimensional electrocatalysts

Nanoscale ◽  
2020 ◽  
Author(s):  
Tong Wu ◽  
Chenlong Dong ◽  
Du Sun ◽  
Fu Qiang Huang
Keyword(s):  
Band Structure ◽  
Environmental Pollution ◽  
Water Splitting ◽  
Surface Defect ◽  
2D Materials ◽  
Energy Crisis ◽  
Hydrogen Energy ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Unique Band

The electrocatalytic overall water splitting can efficiently and sustainably produce clean hydrogen energy to alleviate the global energy crisis and environmental pollution. Two-dimensional (2D) materials with unique band structure and...

Impact of structure, doping and defect- engineering in 2D materials for CO2 capture and conversion

2021 ◽  
Author(s):  
E. J. Jelmy ◽  
Nishanth Thomas ◽  
Dhanu Treasa Mathew ◽  
Jesna Louis ◽  
Nisha T Padmanabhan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
2D Materials ◽  
Vital Role ◽  
Energy Crisis ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Anthropogenic Carbon ◽  
2D Nanomaterials ◽  
Carbon Dioxide Co2

The investigations on anthropogenic carbon dioxide (CO2) capture and conversion have a vital role in eradicating the global warming and energy crisis. In this context, defect- engineered two-dimensional (2D) nanomaterials...

Surface Defect Engineering on Perovskite Oxides as Efficient Bifunctional Electrocatalysts for Water Splitting

2021 ◽  
Vol 13 (36) ◽  
pp. 42852-42860
Author(s):  
RuoQi Zong ◽  
YeGui Fang ◽  
Changrong Zhu ◽  
Xiang Zhang ◽  
Lei Wu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Surface Defect ◽  
Perovskite Oxides ◽  
Defect Engineering ◽  
Bifunctional Electrocatalysts

β-SnS/GaSe heterostructure: a promising solar-driven photocatalyst with low carrier recombination for overall water splitting

2022 ◽  
Author(s):  
Jie Meng ◽  
Jiajun Wang ◽  
Jianing Wang ◽  
Qunxiang Li ◽  
Jinlong Yang
Keyword(s):  
Water Splitting ◽  
High Efficiency ◽  
2D Materials ◽  
Two Dimensional ◽  
Practical Application ◽  
Overall Water Splitting ◽  
Carrier Recombination ◽  
High Carrier

Various two-dimensional (2D) materials have been well investigated as promising high-efficiency photocatalysts for solar-driven water splitting, while the high carrier recombination greatly hinders their practical application. One effective route to...

scholarly journals Emerging 2D Materials and Their Van Der Waals Heterostructures

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 579 ◽  
Author(s):  
Antonio Di Bartolomeo
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
State Of The Art ◽  
2D Materials ◽  
Van Der Waals ◽  
Functional Materials ◽  
Building Blocks ◽  
Theoretical Research ◽  
Two Dimensional ◽  
Tremendous Amount

Two-dimensional (2D) materials and their van der Waals heterojunctions offer the opportunity to combine layers with different properties as the building blocks to engineer new functional materials for high-performance devices, sensors, and water-splitting photocatalysts. A tremendous amount of work has been done thus far to isolate or synthesize new 2D materials as well as to form new heterostructures and investigate their chemical and physical properties. This article collection covers state-of-the-art experimental, numerical, and theoretical research on 2D materials and on their van der Waals heterojunctions for applications in electronics, optoelectronics, and energy generation.

scholarly journals Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1192
Author(s):  
Zixin Xiong ◽  
Lei Zhong ◽  
Haotian Wang ◽  
Xiaoyan Li
Keyword(s):  
2D Materials ◽  
Structural Defects ◽  
Monolayer Graphene ◽  
Fracture Mechanisms ◽  
Two Dimensional ◽  
Mechanical Behaviors ◽  
Defect Engineering ◽  
Practical Applications ◽  
Atomic Structures ◽  
Deformation And Fracture

Since the success of monolayer graphene exfoliation, two-dimensional (2D) materials have been extensively studied due to their unique structures and unprecedented properties. Among these fascinating studies, the most predominant focus has been on their atomic structures, defects, and mechanical behaviors and properties, which serve as the basis for the practical applications of 2D materials. In this review, we first highlight the atomic structures of various 2D materials and the structural and energy features of some common defects. We then summarize the recent advances made in experimental, computational, and theoretical studies on the mechanical properties and behaviors of 2D materials. We mainly emphasized the underlying deformation and fracture mechanisms and the influences of various defects on mechanical behaviors and properties, which boost the emergence and development of topological design and defect engineering. We also further introduce the piezoelectric and flexoelectric behaviors of specific 2D materials to address the coupling between mechanical and electronic properties in 2D materials and the interactions between 2D crystals and substrates or between different 2D monolayers in heterostructures. Finally, we provide a perspective and outlook for future studies on the mechanical behaviors and properties of 2D materials.

scholarly journals Recent Progress on Irradiation-Induced Defect Engineering of Two-Dimensional 2H-MoS2 Few Layers

2019 ◽  
Vol 9 (4) ◽  
pp. 678 ◽  
Author(s):  
Guang-Yi Zhao ◽  
Hua Deng ◽  
Nathaniel Tyree ◽  
Michael Guy ◽  
Abdellah Lisfi ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Heavy Ions ◽  
2D Materials ◽  
X Rays ◽  
Two Dimensional ◽  
Infrared Irradiation ◽  
Defect Engineering ◽  
Magnetic Performance ◽  
Particle Irradiation ◽  
Two Dimensional Materials

Atom-thick two-dimensional materials usually possess unique properties compared to their bulk counterparts. Their properties are significantly affected by defects, which could be uncontrollably introduced by irradiation. The effects of electromagnetic irradiation and particle irradiation on 2H MoS 2 two-dimensional nanolayers are reviewed in this paper, covering heavy ions, protons, electrons, gamma rays, X-rays, ultraviolet light, terahertz, and infrared irradiation. Various defects in MoS 2 layers were created by the defect engineering. Here we focus on their influence on the structural, electronic, catalytic, and magnetic performance of the 2D materials. Additionally, irradiation-induced doping is discussed and involved.

scholarly journals Two-dimensional polarized MoTe2/GeS heterojunction with an intrinsic electric field for photocatalytic water-splitting

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 34048-34058
Author(s):  
Di Gu ◽  
Xiaoma Tao ◽  
Hongmei Chen ◽  
Yifang Ouyang ◽  
Weiling Zhu ◽  
...  
Keyword(s):  
Electric Field ◽  
Water Splitting ◽  
Hydrogen Energy ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Highly Efficient

The 2D polarized material-based MoTe2/GeS heterojunction would be a highly efficient photocatalyst for producing hydrogen energy.

Band structure engineering of SnS2/polyphenylene van der Waals heterostructure via interlayer distance and electric field

2019 ◽  
Vol 21 (3) ◽  
pp. 1521-1527 ◽  
Author(s):  
Qian Zhang ◽  
Xueping Li ◽  
Tianxing Wang ◽  
Zhenduo Geng ◽  
Congxin Xia
Keyword(s):  
Band Structure ◽  
Electric Field ◽  
2D Materials ◽  
Van Der Waals ◽  
Interlayer Distance ◽  
Two Dimensional ◽  
Effective Strategy ◽  
Van Der Waals Heterostructure ◽  
Structure Engineering

Constructing a van der Waals heterostructure (vdWH) by stacking different two-dimensional (2D) materials has been considered to be an effective strategy to obtain the desired properties.

Penta-MS2 (M = Mn, Ni, Cu/Ag and Zn/Cd) monolayers with negative Poisson's ratios and tunable bandgaps as water-splitting photocatalysts

2021 ◽  
Author(s):  
Xiaodong Lv ◽  
Linke Yu ◽  
Fengyu Li ◽  
Jian Gong ◽  
Yong He ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
High Stability ◽  
2D Materials ◽  
Two Dimensional ◽  
Novel Materials ◽  
Poisson's Ratios ◽  
Poisson’S Ratios

Seeking novel materials with specific applications is always an attractive theme in developing two-dimensional (2D) materials. Here 10 2D pentagonal transition metal dichalcogenids are identified with high stability and their promising applications.

scholarly journals Review of two-dimensional materials for photocatalytic water splitting from a theoretical perspective

2017 ◽  
Vol 7 (3) ◽  
pp. 545-559 ◽  
Author(s):  
Yunguo Li ◽  
Yan-Ling Li ◽  
Baisheng Sa ◽  
Rajeev Ahuja
Keyword(s):  
Water Splitting ◽  
2D Materials ◽  
Theoretical Perspective ◽  
Two Dimensional ◽  
Photocatalytic Water Splitting ◽  
Two Dimensional Materials

Two-dimensional (2D) materials have shown extraordinary performances as photocatalysts compared to their bulk counterparts.

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