Tuning the photocatalytic water-splitting capability of two-dimensional α-In2Se3 by strain-driven band gap engineering

2020 ◽  
Vol 22 (6) ◽  
pp. 3520-3526 ◽  
Author(s):  
Erik F. Procopio ◽  
Renan N. Pedrosa ◽  
Fábio A. L. de Souza ◽  
Wendel S. Paz ◽  
Wanderlã L. Scopel
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Band Gap ◽  
Electronic Properties ◽  
Water Splitting ◽  
Density Functional ◽  
Single Layer ◽  
Two Dimensional ◽  
Functional Theory ◽  
Band Gap Engineering

In this work, we have investigated the effects of in-plane mechanical strains on the electronic properties of single-layer α-In2Se3 by means of density functional theory (DFT) calculations.

scholarly journals Tunable spin-polarized band gap in Si2/NiI2 vdW heterostructure

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8927-8935 ◽  
Author(s):  
Douglas Duarte de Vargas ◽  
Rogério José Baierle
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Band Gap ◽  
Electronic Properties ◽  
Density Functional ◽  
Van Der Waals ◽  
Functional Theory ◽  
Spin Polarized ◽  
Structural And Electronic Properties ◽  
Vdw Heterostructure

Using density functional theory (DFT) calculations we investigate the structural and electronic properties of a heterogeneous van der Waals (vdW) structure consisting of silicene and NiI2 single layers.

Electronic properties of porous graphene, α-graphyne, graphene-like, and graphyne-like BN sheets

2016 ◽  
Vol 94 (3) ◽  
pp. 305-309 ◽  
Author(s):  
Roya Majidi
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Electronic Properties ◽  
Density Functional ◽  
Two Dimensional ◽  
Functional Theory ◽  
Nanoelectronic Devices ◽  
Porous Graphene ◽  
Semiconducting Properties

We have used density functional theory to investigate the electronic properties of two-dimensional porous sheets. The porous C and BN sheets based on graphene and α-graphyne are studied. It is found that the porous graphene is an insulator while porous α-graphyne has semiconducting properties. By substitution of C atoms by B and N atoms, the band gap becomes larger. The porous graphene-like and porous graphyne-like BN sheets show insulating behaviors. The nonzero band gap of these porous C and BN sheets may provide an opportunity to use them in nanoelectronic devices.

Understanding the advantage of hexagonal WO3 as an efficient photoanode for solar water splitting: a first-principles perspective

2016 ◽  
Vol 4 (29) ◽  
pp. 11498-11506 ◽  
Author(s):  
Taehun Lee ◽  
Yonghyuk Lee ◽  
Woosun Jang ◽  
Aloysius Soon
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Water Splitting ◽  
Anode Material ◽  
First Principles ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Good Alternative ◽  
Functional Theory ◽  
Solar Water Splitting

Using first-principles density-functional theory calculations, we investigate the advantage of using h-WO3 (and its surfaces) over the larger band gap γ-WO3 phase for the anode in water splitting. We demonstrate that h-WO3 is a good alternative anode material for optimal water splitting efficiencies.

Prediction of Beryllium Clusters from First Principles: Be17 as a Promising New Material for Water Splitting

2021 ◽  
Author(s):  
Behnaz Abyaz ◽  
Zabiollah Mahdavifar ◽  
Georg Schreckenbach ◽  
Yang Gao
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Water Splitting ◽  
First Principles ◽  
Density Functional ◽  
Global Minimum ◽  
Functional Theory ◽  
New Material ◽  
Universal Structure

Evolutionary searches using the USPEX method (Universal Structure Predictor: Evolutionary Xtallography) combined with density functional theory (DFT) calculations were performed to obtain the global minimum structures of beryllium (Ben, n=3-25)...

scholarly journals Hydration Dependent Band Gap Tunability of Self-Assembled Phenylalanine-Tryptophan Nanotubes

2020 ◽  
Author(s):  
Hugo Souza ◽  
Antonio Chaves Neto ◽  
Francisco Sousa ◽  
Rodrigo Amorim ◽  
Alexandre Reily Rocha ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Band Gap ◽  
Electronic Properties ◽  
Building Block ◽  
Density Functional ◽  
Tight Binding ◽  
Water Molecules ◽  
Confined Water ◽  
Functional Theory ◽  
Tight Binding Method

In this work, we investigate the effects of building block separation of Phenylalanine-Tryptophan nanotube induced by the confined water molecules on the electronic properties using density-functional theory based tight-binding method. <div><br></div>

Low-dimensional HfS2 as SO2 adsorbent and gas sensor: Effect of water and sulfur vacancies

2021 ◽  
Author(s):  
Amina Bouheddadj ◽  
Tarik Ouahrani ◽  
Gbèdodé Wilfried KANNHOUNON ◽  
Boufatah Reda ◽  
Sumeya Bedrane ◽  
...  
Keyword(s):  
Climate Change ◽  
Density Functional Theory ◽  
Dft Calculations ◽  
Gas Sensor ◽  
First Principles ◽  
Density Functional ◽  
Two Dimensional ◽  
Functional Theory ◽  
Sensor Effect ◽  
Low Dimensional

First-principles based on density functional theory (DFT) calculations were performed to investigate the interaction of two-dimensional (2D) HfS2 with SO2, a harmful gas with implications for climate change. In particular,...

scholarly journals Tuning the electronic properties of transition-metal trichalcogenides via tensile strain

Nanoscale ◽  
2015 ◽  
Vol 7 (37) ◽  
pp. 15385-15391 ◽  
Author(s):  
Ming Li ◽  
Jun Dai ◽  
Xiao Cheng Zeng
Keyword(s):  
Density Functional Theory ◽  
Transition Metal ◽  
Electronic Properties ◽  
Electronic Structures ◽  
Density Functional ◽  
Tensile Strain ◽  
Two Dimensional ◽  
Functional Theory ◽  
Comprehensive Study

A comprehensive study of the effect of tensile strain (ε = 0% to 8%) on the electronic structures of two-dimensional (2D) transition-metal trichalcogenide (TMTC) monolayers MX3 (M = Ti, Zr, Hf, Nb; X = S, Se Te) is performed on the basis of density functional theory (DFT) computation.

Influence of the adsorption of toxic agents on the optical and electronic properties of B12N12 fullerene in the presence and absence of an external electric field

2020 ◽  
Vol 44 (34) ◽  
pp. 14513-14528
Author(s):  
Alireza Soltani ◽  
Mohammad Ramezanitaghartapeh ◽  
Masoud Bezi Javan ◽  
Mohammad T. Baei ◽  
Andrew Ng Kay Lup ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Electric Field ◽  
Dft Calculations ◽  
Electronic Properties ◽  
External Electric Field ◽  
Density Functional ◽  
Interaction Energies ◽  
Functional Theory ◽  
Toxic Agents ◽  
Optical And Electronic Properties

The interaction energies and optoelectronic properties of sarin (SF) and chlorosarin (SC) on the B12N12 with and without the presence of an electric field have been studied using density functional theory (DFT) calculations.

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