Structural and optical studies of hydrothermally synthesized MoS2 nanostructures

Chacko, Levna; Swetha, A. K.; Anjana, R; Aneesh, P. M.

doi:10.1063/1.4946671

Cited by 1 publication

(2 citation statements)

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“…Finally, the CNT-MoS 2 composite network was annealed in a tube furnace at 900 • C under Ar atmosphere for 2 h with a heating rate of 2 • C/min. The reaction routes can be expressed as follows [35]:…”

Section: Preparation Of the Cnt-mos 2 Composite Networkmentioning

confidence: 99%

“…In comparison, the CNT-MoS 2 composite network shows five peaks at 14.4 • , 22.8 • , 32.7 • , 39.5 • , and 58.3 • . The diffraction peak at 2θ = 22.8 • corresponds to the CNTs [42] and the other peaks can be attributed to the (002), ( 100), (103), and (110) crystal planes of the hexagonal phase MoS 2 , respectively [30,35,43]. The sharp peaks reveal that MoS 2 has a well-developed crystalline structure [41].…”

Section: Materials Synthesis and Structural Characterizationmentioning

confidence: 99%

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Preparation and Bolometric Responses of MoS2 Nanoflowers and Multi-Walled Carbon Nanotube Composite Network

Wang

Deng

et al. 2022

Nanomaterials

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Due to their broadband optical absorption ability and fast response times, carbon nanotube (CNT)-based materials are considered promising alternatives to the toxic compounds used in commercial infrared sensors. However, the direct use of pure CNT networks as infrared sensors for simple resistance read-outs results in low sensitivity values. In this work, MoS2 nanoflowers are composited with CNT networks via a facile hydrothermal process to increase the bolometric performance. The thermal diffusivity (α) against temperature (T) is measured using the transient electro-thermal (TET) technique in the range of 320 K to 296 K. The α-T curve demonstrates that the composite containing MoS2 nanoflowers provides significant phonon scattering and affects the intertube interfaces, decreasing the α value by 51%. As the temperature increases from 296 K to 320 K, the relative temperature coefficient of resistance (TCR) increases from 0.04%/K to 0.25%/K. Combined with the enhanced light absorption and strong anisotropic structure, this CNT–MoS2 composite network exhibits a more than 5-fold greater surface temperature increase under the same laser irradiation. It shows up to 18-fold enhancements in resistive responsivity ((Ron − Roff)/Roff) compared with the pure CNT network for a 1550 nm laser at room temperature (RT).

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Section: Preparation Of the Cnt-mos 2 Composite Networkmentioning

confidence: 99%