Bonding of Ammonia and Its Dehydrogenated Fragments on Ru(0001)

Maier S, Stass I, Cerda JI, Salmeron M (2012)

Publication Language: English

Publication Status: Published

Publication Type: Journal article

Publication year: 2012


Publisher: American Chemical Society

Book Volume: 116

Pages Range: 25395-25400

DOI: 10.1021/jp308835x


The adsorption and dissociation of ammonia on Ru(0001) was studied by scanning tunneling microscopy (STM), density functional theory (DFT), and STM contrast simulations. Various NHx (with x = 0-2) species were formed by controlled STM tip manipulation. Each species shows a characteristic imaging contrast in STM measurements, changing from a protrusion for NH3 and NH2, to a depression for NH and N. The adsorption sites of each species determined from the STM images and their contrast agree well with DFT calculations and STM image simulations. Ammonia was found to interact with hydrogen atoms present on the surface, leading to the formation of triangular-shaped NH3 + 3H complexes. At submonolayer coverage, ammonia dimers were also identified and their formation and dissociation were observed upon tip manipulation.

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Maier, S., Stass, I., Cerda, J.I., & Salmeron, M. (2012). Bonding of Ammonia and Its Dehydrogenated Fragments on Ru(0001). Journal of Physical Chemistry C, 116, 25395-25400.


Maier, Sabine, et al. "Bonding of Ammonia and Its Dehydrogenated Fragments on Ru(0001)." Journal of Physical Chemistry C 116 (2012): 25395-25400.

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