Preparation and Characterization of Chiral Transition-Metal Dichalcogenide Quantum Dots and Their Enantioselective Catalysis

2018 ◽  
Vol 10 (36) ◽  
pp. 30680-30688 ◽  
Author(s):  
Huan Zhang ◽  
Hui He ◽  
Xuemei Jiang ◽  
Zhining Xia ◽  
Weili Wei
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Enantioselective Catalysis ◽  
Transition Metal Dichalcogenide ◽  
Chiral Transition

Characterization of Graphene and Transition Metal Dichalcogenide at the Atomic Scale

2015 ◽  
Vol 84 (12) ◽  
pp. 121005 ◽  
Author(s):  
Zheng Liu ◽  
Yung-Chang Lin ◽  
Jamie H. Warner ◽  
Po-Yuan Teng ◽  
Chao-Hui Yeh ◽  
...  
Keyword(s):  
Transition Metal ◽  
Atomic Scale ◽  
Transition Metal Dichalcogenide

Observation of quantum-confined exciton states in monolayer WS2 quantum dots by ultrafast spectroscopy

Nanoscale ◽  
2021 ◽  
Author(s):  
Shuwen Zheng ◽  
Lei Wang ◽  
Hai-yu Wang ◽  
chenyu Xu ◽  
Yang Luo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Edge Effect ◽  
Quantum Confinement ◽  
Ultrafast Spectroscopy ◽  
Photophysical Properties ◽  
Quantum Confinement Effect ◽  
Confinement Effect ◽  
Transition Metal Dichalcogenide ◽  
Fundamental Study

Monolayer transition metal dichalcogenide quantum dots (TMDC QDs) could exhibit unique photophysical properties, because of both lateral quantum confinement effect and edge effect. However, there is little fundamental study on...

scholarly journals Exciton g-factors in monolayer and bilayer WSe2 from experiment and theory

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jonathan Förste ◽  
Nikita V. Tepliakov ◽  
Stanislav Yu. Kruchinin ◽  
Jessica Lindlau ◽  
Victor Funk ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition ◽  
General Terms ◽  
Indirect Excitons ◽  
Metal Dichalcogenides ◽  
Experimental Findings ◽  
Experimental And Theoretical Studies

Abstract The optical properties of monolayer and bilayer transition metal dichalcogenide semiconductors are governed by excitons in different spin and valley configurations, providing versatile aspects for van der Waals heterostructures and devices. Here, we present experimental and theoretical studies of exciton energy splittings in external magnetic field in neutral and charged WSe2 monolayer and bilayer crystals embedded in a field effect device for active doping control. We develop theoretical methods to calculate the exciton g-factors from first principles for all possible spin-valley configurations of excitons in monolayer and bilayer WSe2 including valley-indirect excitons. Our theoretical and experimental findings shed light on some of the characteristic photoluminescence peaks observed for monolayer and bilayer WSe2. In more general terms, the theoretical aspects of our work provide additional means for the characterization of single and few-layer transition metal dichalcogenides, as well as their heterostructures, in the presence of external magnetic fields.

The chemical synthesis in solution and characterization of transition metal dichalcogenide MX2 (M = Mo, W; X = S, Se) nanoparticles

2004 ◽  
Vol 15 (7) ◽  
pp. 828-832 ◽  
Author(s):  
D Duphil ◽  
S Bastide ◽  
J C Rouchaud ◽  
J L Pastol ◽  
B Legendre ◽  
...  
Keyword(s):  
Transition Metal ◽  
Chemical Synthesis ◽  
Transition Metal Dichalcogenide ◽  
Se Nanoparticles

Fast preparation of ultrafine monolayered transition-metal dichalcogenide quantum dots using electrochemical shock for explosive detection

2016 ◽  
Vol 52 (76) ◽  
pp. 11442-11445 ◽  
Author(s):  
Zhigang Chen ◽  
Zhengxu Tao ◽  
Shan Cong ◽  
Junyu Hou ◽  
Dengsong Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Explosive Detection ◽  
Fast Method ◽  
Transition Metal Dichalcogenide ◽  
Average Thickness ◽  
Average Size

A simple, general and fast method called “electrochemical shock” is developed to prepare monolayered transition-metal dichalcogenide (TMD) QDs with an average size of 2–4 nm and an average thickness of 0.85 ± 0.5 nm with only about 10 min of ultrasonication.

Boosted electrochemical ammonia synthesis by high-percentage metallic transition metal dichalcogenide quantum dots

Nanoscale ◽  
2020 ◽  
Vol 12 (20) ◽  
pp. 10964-10971 ◽  
Author(s):  
Jian Zhang ◽  
Chongyi Ling ◽  
Wenjie Zang ◽  
Xiaoxia Li ◽  
Shaozhuan Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transition Metal ◽  
Electrochemical Method ◽  
Ammonia Synthesis ◽  
Value Added ◽  
Transition Metal Dichalcogenide ◽  
Ambient Conditions ◽  
Bosch Process

The electrochemical method can directly convert N2 into the high-value-added NH3 under ambient conditions and is considered to be a green and sustainable alternative to the traditional Haber–Bosch process.

Hyper–Rayleigh scattering in 2D redox exfoliated semi-metallic ZrTe2 transition metal dichalcogenide

2020 ◽  
Vol 22 (47) ◽  
pp. 27845-27849
Author(s):  
Manoel L. da Silva-Neto ◽  
Renato Barbosa-Silva ◽  
Cid B. de Araújo ◽  
Christiano J. S. de Matos ◽  
Ali M. Jawaid ◽  
...  
Keyword(s):  
Transition Metal ◽  
Rayleigh Scattering ◽  
Transition Metal Dichalcogenides ◽  
Optical Characterization ◽  
Basic Knowledge ◽  
Transition Metal Dichalcogenide ◽  
Fundamental Interest ◽  
Metal Dichalcogenides ◽  
Layered Transition Metal

Nonlinear optical characterization of nanostructured layered transition metal dichalcogenides (LTMDs) is of fundamental interest for basic knowledge and applied purposes.

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