Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Recently, two-dimensional transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS) have attracted great attention due to their unique properties. To modulate the electronic properties and structure of TMDs, it is crucial to precisely control chalcogenide vacancies and several methods have already been suggested. However, they have several limitations such as plasma damage by ion bombardment. Herein, we introduced a novel solvent-assisted vacancy engineering (SAVE) method to modulate sulfur vacancies in MoS. Considering polarity and the Hansen solubility parameter (HSP), three solvents were selected. Sulfur vacancies can be modulated by immersing MoS in each solvent, supported by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy analyses. The SAVE method can further expand its application in memory devices representing memristive performance and synaptic behaviors. We represented the charge transport mechanism of sulfur vacancy migration in MoS. The non-destructive, scalable, and novel SAVE method controlling sulfur vacancies is expected to be a guideline for constructing a vacancy engineering system of TMDs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d3nh00201b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reversible Manipulations of Triangular-Shaped Mirror Twin Boundary Loops in Ultrathin NiTe.
Nano Lett
September 2025
School of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
High-density mirror twin boundaries (MTBs) embedded in two-dimensional (2D) transition metal dichalcogenides (TMDCs) have emerged as fascinating platforms for exploring charge density wave and Tomonaga-Luttinger liquid-related issues. However, the reversible manipulation of high-density MTBs in 2D TMDCs remains challenging. Herein, we report the first fabrication of high-density MTB loops in ultrathin 1T-NiTe on the SrTiO(001) substrate, by postannealing as-grown 1T-NiTe under Te-deficient conditions.
View Article and Find Full Text PDFSynergistic interface and oxygen/nitrogen vacancy engineering in g-CN/CuO under high pressure for efficient CO photoreduction.
J Colloid Interface Sci
September 2025
WPI, International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan; Mitsui Chemicals, Inc -.Carbon Neutral Research Center (MCI-CNRC), Kyushu University, Fukuoka 819-0395, Japan. Electronic address:
This study explores highly active nitride-based g-CN/CuO photocatalysts for CO photoconversion by synthesizing them through high-pressure torsion (HPT) straining. Data indicate that increasing the applied strain under high pressure promotes vacancy formation and improves the electronic interaction at the g-CN/CuO interphases, enabling superior charge separation and extended light absorption. The generation of dual vacancies of oxygen and nitrogen is verified by electron paramagnetic resonance and Fourier transform infrared spectroscopic methods, and the generation of a type-II heterojunction is confirmed by band structure analysis.
View Article and Find Full Text PDFDual-Motor Oxygen-Deficiency-Engineering Al-Doped WO Circular Nanorod Arrays for Parts per Billion-Level Acetone Detection.
Nano Lett
September 2025
School of Materials and Chemistry, University of Shanghai for Science & Technology, Shanghai 200093, China.
Developing low-temperature gas sensors for parts per billion-level acetone detection in breath analysis remains challenging for non-invasive diabetes monitoring. We implement dual-defect engineering via one-pot synthesis of Al-doped WO nanorod arrays, establishing a W-O-Al catalytic mechanism. Al doping induces lattice strain to boost oxygen vacancy density by 31.
View Article and Find Full Text PDFFormation of surfaces oxide vacancies in porous ZnCoO nanoflowers for enhanced energy storage performance.
Discov Nano
September 2025
Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Integrated Circuit, Ministry of Education, School of Physics, Zhengzhou University, Zhengzhou, 450052, China.
A cost-effective and large-scale method for synthesizing ZnCoO nanoflowers with surface oxygen vacancies as electrode materials for supercapacitors is presented. The existence of oxygen vacancies on the surface of the ZnCoO nanoflowers has been confirmed through X-ray photoelectron spectroscopy (XPS). The energy bands and density of states (DOS) of ZnCoO are examined using density functional theory, revealing that treatment with NaBH reduces the band gap of ZnCoO while increasing the DOS near the Fermi level compared to pristine ZnCoO.
View Article and Find Full Text PDFg-CN/BiO hetero-nanosheets as a superior electrocatalyst for nitrate reduction to ammonia.
Chem Commun (Camb)
September 2025
State Key Laboratory of New Textile Materials & Advanced Processing Technology, College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430200, China.
The faradaic efficiency of the electro-synthesis of ammonia using the nitrate reduction reaction (NORR) relies on an electrocatalyst to hydrogenate NO and simultaneously suppress the hydrogen evolution reaction (HER). Due to the formation of a heterostructure, the faradaic efficiency of g-CN/BiO reaches 91.12% at -0.
View Article and Find Full Text PDF