Two-step Synthesis of MoS2 Nanotubes using Shock Waves with Lead as Growth Promoter

Brontvein, Olga and Jayaram, Vishakantaiah and Reddy, KPJ and Gordon, Jeffrey M and Tenne, Reshef (2014) Two-step Synthesis of MoS2 Nanotubes using Shock Waves with Lead as Growth Promoter. In: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 640 (6, SI). pp. 1152-1158.

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Abstract

A new two-step procedure for the synthesis of MoS2 nanotubes using lead as a growth promoter is reported. In the first step, molybdenum suboxide nanowhiskers containing a small amount of lead atoms were created by exposing a pressed MoS2+Pb mixture to highly compressed shock-heated argon gas, with estimated temperatures exceeding 9900 K. In the second step, these molybdenum suboxide nanowhiskers served as templates for the sulfidization of the oxide into MoS2 nanotubes (by using H2S gas in a reducing atmosphere at 820 degrees C). Unlike the case of WS2 nanotubes, the synthesis of a pure phase of MoS2 nanotubes from molybdenum oxide has proven challenging, due mostly to the volatile nature of the latter at the high requisite reaction temperatures (>800 degrees C). In contrast, the nature and apparent reaction mechanism of the method reported herein are amenable to future scale-up. The high-temperature shockwave system should also facilitate the synthesis of new nanostructures from other layered materials.

Item Type:	Journal Article
Publication:	ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Publisher:	WILEY-V C H VERLAG GMBH
Additional Information:	copyright for this article belongs to WILEY-V C H VERLAG GMBH, BOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANY
Keywords:	Inorganic nanotubes; Shockwave; Lead; MoS2
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	27 Jun 2014 04:58
Last Modified:	27 Jun 2014 04:58
URI:	http://eprints.iisc.ac.in/id/eprint/49385

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