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Atomic Force Microscope Topography of Nickel-Affected MoS2 Model Catalysts

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Published 9 November 2005 Copyright (c) 2005 The Japan Society of Applied Physics
, , Citation Hiroshi Uetsuka et al 2005 Jpn. J. Appl. Phys. 44 8116 DOI 10.1143/JJAP.44.8116

1347-4065/44/11R/8116

Abstract

Nanometer-sized particles of MoS2 were synthesized on mica and MoS2 surfaces and observed using an atomic force microscope. Molybdenum oxide was deposited on each substrate and sulfided with H2S gas to simulate catalysts used in petroleum refining. The height of the sulfided particles was regulated to be single or double layers of S–Mo–S suggesting basal-bonded, flat-lying MoS2. When Ni metal was simultaneously deposited with molybdenum oxide, the sulfided particles remained basal-bonded and the number of stacked layers increased by one or two.

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10.1143/JJAP.44.8116