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Semiconducting WS2 nanohybrids with different sizes of silver nanoparticles are designed via amine-assisted in situ reduction and growth of Ag(+) ions. These nanohybrids exhibit characteristic photocatalytic activity for the reduction of 4-nitrophenol as a function of their structure.
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http://dx.doi.org/10.1039/c6cc00708b | DOI Listing |
Small
January 2025
Inter-university Semiconductor Research Center, Seoul National University, Seoul, 08826, Republic of Korea.
Nanoscale
October 2023
School of Materials Science, Indian Association for the Cultivation of Science, Kolkata 700032, India.
Broadband photodetection including deep UV using Si is technically challenging due to its negligible optical absorption at 254 nm and the requirement of heterogeneous integration with very high bandgap photoactive materials. However, monolithic integration of high-bandgap semiconductors on Si is not possible due to CMOS fabrication incompatibility. Comprehensive experimental studies to achieve broadband photodetection including deep UV on Si are lacking in the literature.
View Article and Find Full Text PDFUltrason Sonochem
January 2023
Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey. Electronic address: a_khataee@tab
Here, we investigate the band structure, density of states, photocatalytic activity, and heterojunction mechanism of WS with CeO (CeO@WS) as a photoactive heterostructure. In this heterostructure, CeO's growth within WS layers is achieved through ultrasonicating WS and intercalating CeO's precursor within the WS interlayers, followed by hydrothermal treatment. Through a set of density functional calculations, we demonstrate that CeO and WS form an interface through a covalent bonding that can be highly stable.
View Article and Find Full Text PDFAdv Mater
January 2023
Center for Van der Waals Quantum Solids, Institute for Basic Science (IBS), Pohang, 37673, Republic of Korea.
A new type of atomically thin synaptic network on van der Waals (vdW) heterostructures is reported, where each ultrasmall cell (≈2 nm thick) built with trilayer WS semiconductor acts as a gate-tunable photoactive synapse, i.e., a photo-memtransistor.
View Article and Find Full Text PDFACS Nano
April 2022
Department of Physics, National Taiwan University, Taipei 106, Taiwan.
The clean production of hydrogen from water using sunlight has emerged as a sustainable alternative toward large-scale energy generation and storage. However, designing photoactive semiconductors that are suitable for both light harvesting and water splitting is a pivotal challenge. Atomically thin transition metal dichalcogenides (TMD) are considered as promising photocatalysts because of their wide range of available electronic properties and compositional variability.
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