Laser-Induced photothermal activation of multilayer MoS2 with spatially controlled catalytic activity

Tran, Tuan-Hoang; Rodriguez, Raul D.; Villa, Nelson E.; Shchadenko, Sergey; Averkiev, Andrey; Hou, Yang; Zhang, Tao; Matkovic, Aleksandar; Sheremet, Evgeniya

doi:10.1016/j.jcis.2023.10.027

Journal of Colloid and Interface Science

2024

DOI: 10.1016/j.jcis.2023.10.027

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Laser-Induced photothermal activation of multilayer MoS2 with spatially controlled catalytic activity

Tuan-Hoang Tran,

Raul D. Rodriguez,

Nelson E. Villa

et al.

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2024

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Cited by 3 publications

References 66 publications

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Laser‐Induced Transformation of ZIF‐8 into Highly Luminescent N‐Doped Nanocarbons for Flexible Sensors

Tran,

Garcia,

Kogolev

et al. 2024

Advanced Optical Materials

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Metal–organic frameworks (MOFs) like the zeolitic imidazolate framework (ZIF‐8) have a high surface area, tunable porosity, and robust thermal and chemical stability, making them attractive candidates for various applications. Here, a strategy is shown that spans that functionality and provides strong photoluminescence (PL) emission, unlocking ZIF‐8‐based materials for chemical and temperature sensors based on PL. The approach is based on laser processing that dramatically boosts the PL response of laser‐irradiated ZIF‐8 (LI ZIF‐8), achieving a 70‐fold increase in intensity relative to the pristine material. The PL characteristics of the irradiated material can be easily tuned by varying the laser power and irradiation time with in situ and real‐time spectroscopic analysis providing insights into the process dynamics. It is found that the observed PL enhancement is primarily due to the laser‐induced transformation of ZIF‐8 into nitrogen‐doped nanocarbons and ZnO nanostructures. The versatility of this laser processing approach is leveraged to create flexible electronics by integrating the LI ZIF‐8/nanocarbon architectures into thermoplastic polyurethane (TPU). The multifunctional composite material shows excellent performance as flexible electrodes for human‐body monitoring applications, as well as both temperature and flexure sensors with remarkable mechanical resilience.

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Laser‐Induced Transformation of ZIF‐8 into Highly Luminescent N‐Doped Nanocarbons for Flexible Sensors

Tran,

Garcia,

Kogolev

et al. 2024

Advanced Optical Materials

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Construction of 3D MoSx/Zn2In2S5 nanoflower heterojunction for boosted photothermal-assisted photocatalytic hydrogen evolution in biomass solution

Yan,

Zhou,

Song

et al. 2024

International Journal of Hydrogen Energy

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Photochemistry dominates over photothermal effects in the laser-induced reduction of graphene oxide by visible light

Fatkullin,

Cheshev,

Averkiev

et al. 2024

Nat Commun

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Graphene oxide (GO) possesses specific properties that are revolutionizing materials science, with applications extending from flexible electronics to advanced nanotechnology. A key method for harnessing GO’s potential is its laser-induced reduction, yet the exact mechanisms — photothermal versus photochemical effects — remain unclear. Herein, we discover the dominant role of photochemical reactions in the laser reduction of GO under visible light, challenging the prevailing assumption that photothermal effects are dominant. Employing a combination of Raman thermometry, X-ray photoelectron and photoluminescence spectroscopies, and electrical atomic force microscopy, we quantify the temperature and map the reduction process across micro and nano scales. Our findings demonstrate that the photochemical cleavage of oxygen-containing groups below a reduction threshold temperature is a decisive factor in GO reduction, leading to distinct characteristics that cannot be replicated by heating alone. This work clarifies the fundamental mechanisms of GO transformation under visible laser irradiation, highlighting the dominant role of photochemical processes. Distinguishing these subtleties enables the development of laser-reduced GO platforms for graphene-based applications compatible with industrial scales. We illustrate this potential by encoding information on GO surfaces as optical storage, allowing us to write binary sequences in long-term memory encoding invisible even through an optical microscope.

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Laser-Induced photothermal activation of multilayer MoS2 with spatially controlled catalytic activity

Cited by 3 publications

References 66 publications

Laser‐Induced Transformation of ZIF‐8 into Highly Luminescent N‐Doped Nanocarbons for Flexible Sensors

Laser‐Induced Transformation of ZIF‐8 into Highly Luminescent N‐Doped Nanocarbons for Flexible Sensors

Construction of 3D MoSx/Zn2In2S5 nanoflower heterojunction for boosted photothermal-assisted photocatalytic hydrogen evolution in biomass solution

Photochemistry dominates over photothermal effects in the laser-induced reduction of graphene oxide by visible light

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