Laser-Induced photothermal activation of multilayer MoS2 with spatially controlled catalytic activity; Journal of Colloid and Interface Science; Vol. 654, Pt. A

Laser-Induced photothermal activation of multilayer MoS2 with spatially controlled catalytic activity; Journal of Colloid and Interface Science; Vol. 654, Pt. A

Bibliographische Detailangaben
Parent link:Journal of Colloid and Interface Science.— .— Amsterdam: Elsevier Science Publishing Company Inc.
Vol. 654, Pt. A.— 2024.— P. 114-123
Körperschaft: National Research Tomsk Polytechnic University
Weitere Verfasser: Tran Tuan Hoang, Rodriguez (Rodriges) Contreras R. D. Raul David, Villa Pineda N. E. Nelson Enrrique, Shchadenko S. V. Sergey Vladimirovich, Averkiev A. A. Andrey Alekseevich, Hou Yang, Zhang Tao, Matkovic A. Aleksandar, Sheremet E. S. Evgeniya Sergeevna
Zusammenfassung:Title screen
This study investigates the effects of high-power laser irradiation on multilayer MoS2, a promising material for catalysis, optoelectronics, and energy applications. In addition to previously reported sculpting of MoS2 layers, we discovered a novel effect of laser-induced photothermal heating that drives the chemical activation of MoS2. The photothermal effect was confirmed by temperature-dependent experiments, in situ temperature measurements with nanolocalized probes, and simulations. Remarkably, we observed the reduction of Ag+ ions on laser-irradiated MoS2 layers, forming plasmonic nanostructures without external stimuli such as photons or chemical reducing agents. We attribute this phenomenon to the significant defect density within the laser-carved region and the surrounding area induced by photothermal effects. Further functionalization of the laser-modified MoS2 with 4-nitrobenzenethiol self-assembled monolayers demonstrated a significant increase in photocatalytic activity, close to 100% yield compared to the negligible activity of pristine material. Our findings contribute to a deeper understanding of the light-induced modification of MoS2 properties and introduce a novel method for spatially controlling the chemical activation of MoS2. This advancement holds significant potential in developing high-performance 2D semiconductors as nano-engineered catalytic materials
Текстовый файл
Sprache:Englisch
Veröffentlicht: 2024
Schlagworte:
электронный ресурс
труды учёных ТПУ
MoS2
laser-engineered nanostructures
chemical activation
photocatalytic activity
nano-engineering
Online-Zugang:https://doi.org/10.1016/j.jcis.2023.10.027
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=672623

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