Effect of Surface Hydrogenation on the Adsorption and Thermal Evolution of Nitrogen Species on Diamond(001) by Microwave N2 Plasma

Yusen Zheng; Mohan Kumar Kuntumalla; Mohammed Attrash; Alon Hoffman; Kai Huang

doi:10.1021/acs.jpcc.1c09514

Effect of Surface Hydrogenation on the Adsorption and Thermal Evolution of Nitrogen Species on Diamond(001) by Microwave N2 Plasma

Yusen Zheng, Mohan Kumar Kuntumalla, Mohammed Attrash, Alon Hoffman^*, Kai Huang^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We describe the adsorption and thermal evolution of nitrogen species on the hydrogenated diamond(001) surface impacted by microwave N2 plasma, as studied by X-ray photoelectron spectroscopy, temperature-programmed desorption, and density functional theory simulations. The experiment and theory are in accord with the formation of two adsorption states of nitrogen species; that is, a horizontal molecular state, h-N2(ad), spanning over two substrate dimers, and a vertical state, v-N2(ad), centered at one substrate dimer. Upon annealing the as-nitrided substrate up to 1000 °C, we find the loss of surface nitrogen species, as resulted from the h-N2(ad) to v-N2(ad) conversion accompanied by the desorption of v-N2(ad) into gaseous N2. While hydrogenated diamond surfaces are generally inert to chemical modification, our findings demonstrate the role that surface hydrogenation plays in stabilizing nitrogen species adsorbed on diamond(001) by nitrogen plasma.

Original language	English
Journal	Journal of Physical Chemistry C
DOIs	https://doi.org/10.1021/acs.jpcc.1c09514
State	Published - 16 Dec 2021

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title = "Effect of Surface Hydrogenation on the Adsorption and Thermal Evolution of Nitrogen Species on Diamond(001) by Microwave N2 Plasma",

abstract = "We describe the adsorption and thermal evolution of nitrogen species on the hydrogenated diamond(001) surface impacted by microwave N2 plasma, as studied by X-ray photoelectron spectroscopy, temperature-programmed desorption, and density functional theory simulations. The experiment and theory are in accord with the formation of two adsorption states of nitrogen species; that is, a horizontal molecular state, h-N2(ad), spanning over two substrate dimers, and a vertical state, v-N2(ad), centered at one substrate dimer. Upon annealing the as-nitrided substrate up to 1000 °C, we find the loss of surface nitrogen species, as resulted from the h-N2(ad) to v-N2(ad) conversion accompanied by the desorption of v-N2(ad) into gaseous N2. While hydrogenated diamond surfaces are generally inert to chemical modification, our findings demonstrate the role that surface hydrogenation plays in stabilizing nitrogen species adsorbed on diamond(001) by nitrogen plasma.",

author = "Yusen Zheng and Kuntumalla, {Mohan Kumar} and Mohammed Attrash and Alon Hoffman and Kai Huang",

year = "2021",

month = dec,

day = "16",

doi = "10.1021/acs.jpcc.1c09514",

language = "英语",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Effect of Surface Hydrogenation on the Adsorption and Thermal Evolution of Nitrogen Species on Diamond(001) by Microwave N2 Plasma

AU - Zheng, Yusen

AU - Kuntumalla, Mohan Kumar

AU - Attrash, Mohammed

AU - Hoffman, Alon

AU - Huang, Kai

PY - 2021/12/16

Y1 - 2021/12/16

N2 - We describe the adsorption and thermal evolution of nitrogen species on the hydrogenated diamond(001) surface impacted by microwave N2 plasma, as studied by X-ray photoelectron spectroscopy, temperature-programmed desorption, and density functional theory simulations. The experiment and theory are in accord with the formation of two adsorption states of nitrogen species; that is, a horizontal molecular state, h-N2(ad), spanning over two substrate dimers, and a vertical state, v-N2(ad), centered at one substrate dimer. Upon annealing the as-nitrided substrate up to 1000 °C, we find the loss of surface nitrogen species, as resulted from the h-N2(ad) to v-N2(ad) conversion accompanied by the desorption of v-N2(ad) into gaseous N2. While hydrogenated diamond surfaces are generally inert to chemical modification, our findings demonstrate the role that surface hydrogenation plays in stabilizing nitrogen species adsorbed on diamond(001) by nitrogen plasma.

AB - We describe the adsorption and thermal evolution of nitrogen species on the hydrogenated diamond(001) surface impacted by microwave N2 plasma, as studied by X-ray photoelectron spectroscopy, temperature-programmed desorption, and density functional theory simulations. The experiment and theory are in accord with the formation of two adsorption states of nitrogen species; that is, a horizontal molecular state, h-N2(ad), spanning over two substrate dimers, and a vertical state, v-N2(ad), centered at one substrate dimer. Upon annealing the as-nitrided substrate up to 1000 °C, we find the loss of surface nitrogen species, as resulted from the h-N2(ad) to v-N2(ad) conversion accompanied by the desorption of v-N2(ad) into gaseous N2. While hydrogenated diamond surfaces are generally inert to chemical modification, our findings demonstrate the role that surface hydrogenation plays in stabilizing nitrogen species adsorbed on diamond(001) by nitrogen plasma.

U2 - 10.1021/acs.jpcc.1c09514

DO - 10.1021/acs.jpcc.1c09514

M3 - 文章

SN - 1932-7447

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

ER -

Effect of Surface Hydrogenation on the Adsorption and Thermal Evolution of Nitrogen Species on Diamond(001) by Microwave N2 Plasma

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