What Does Nitric Acid Really Do to Carbon Nanofibers?

Tutkimustuotos: Lehtiartikkeli

Standard

What Does Nitric Acid Really Do to Carbon Nanofibers? / Sainio, Sami; Nordlund, Dennis; Gandhiraman, Ramprasad; Jiang, Hua; Koehne, Jessica; Koskinen, Jari; Meyyappan, M.; Laurila, Tomi.

julkaisussa: Journal of Physical Chemistry C, Vuosikerta 120, 6b06353, 15.09.2016, s. 22655-22662.

Tutkimustuotos: Lehtiartikkeli

Harvard

APA

Vancouver

Author

Sainio, Sami ; Nordlund, Dennis ; Gandhiraman, Ramprasad ; Jiang, Hua ; Koehne, Jessica ; Koskinen, Jari ; Meyyappan, M. ; Laurila, Tomi. / What Does Nitric Acid Really Do to Carbon Nanofibers?. Julkaisussa: Journal of Physical Chemistry C. 2016 ; Vuosikerta 120. Sivut 22655-22662.

Bibtex - Lataa

@article{67b7b9ecf3ed4d86a5686d025aac0709,
title = "What Does Nitric Acid Really Do to Carbon Nanofibers?",
abstract = "Understanding the chemical nature of the surface of carbon nanofibers (CNF) is critical in assessing their fundamental properties and tailoring them for the right application. To gain such knowledge, we present here a detailed X-ray adsorption spectroscopy (XAS) study accompanied by high resolution transmission electron microscopy (TEM) micrographs of two morphologically different CNF pairs (tetrahedral amorphous carbon (ta-C) grown “open structured” fibers and traditional bamboo-like “closed structured” fibers), where the surface chemical properties and structural features of the fibers are investigated in depth and the effects of nitric acid treatment on the fibers are revealed. The morphology of the fiber and/or the original seed- and adhesion layers markedly affect the response of the fibers to the acid treatment. Results also show that the nitric acid treatment increases the observed sp2 intensity and modifies the two types of fibers to become more-alike both structurally and with respect to their oxygen functionalities. The XAS and HRTEM results confirm that a short nitric acid treatment does not remove the Ni catalyst particle but, instead, oxidizes their surfaces, especially in the case of ta-C grown fibers.",
author = "Sami Sainio and Dennis Nordlund and Ramprasad Gandhiraman and Hua Jiang and Jessica Koehne and Jari Koskinen and M. Meyyappan and Tomi Laurila",
year = "2016",
month = "9",
day = "15",
doi = "10.1021/acs.jpcc.6b06353",
language = "English",
volume = "120",
pages = "22655--22662",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "AMERICAN CHEMICAL SOCIETY",

}

RIS - Lataa

TY - JOUR

T1 - What Does Nitric Acid Really Do to Carbon Nanofibers?

AU - Sainio, Sami

AU - Nordlund, Dennis

AU - Gandhiraman, Ramprasad

AU - Jiang, Hua

AU - Koehne, Jessica

AU - Koskinen, Jari

AU - Meyyappan, M.

AU - Laurila, Tomi

PY - 2016/9/15

Y1 - 2016/9/15

N2 - Understanding the chemical nature of the surface of carbon nanofibers (CNF) is critical in assessing their fundamental properties and tailoring them for the right application. To gain such knowledge, we present here a detailed X-ray adsorption spectroscopy (XAS) study accompanied by high resolution transmission electron microscopy (TEM) micrographs of two morphologically different CNF pairs (tetrahedral amorphous carbon (ta-C) grown “open structured” fibers and traditional bamboo-like “closed structured” fibers), where the surface chemical properties and structural features of the fibers are investigated in depth and the effects of nitric acid treatment on the fibers are revealed. The morphology of the fiber and/or the original seed- and adhesion layers markedly affect the response of the fibers to the acid treatment. Results also show that the nitric acid treatment increases the observed sp2 intensity and modifies the two types of fibers to become more-alike both structurally and with respect to their oxygen functionalities. The XAS and HRTEM results confirm that a short nitric acid treatment does not remove the Ni catalyst particle but, instead, oxidizes their surfaces, especially in the case of ta-C grown fibers.

AB - Understanding the chemical nature of the surface of carbon nanofibers (CNF) is critical in assessing their fundamental properties and tailoring them for the right application. To gain such knowledge, we present here a detailed X-ray adsorption spectroscopy (XAS) study accompanied by high resolution transmission electron microscopy (TEM) micrographs of two morphologically different CNF pairs (tetrahedral amorphous carbon (ta-C) grown “open structured” fibers and traditional bamboo-like “closed structured” fibers), where the surface chemical properties and structural features of the fibers are investigated in depth and the effects of nitric acid treatment on the fibers are revealed. The morphology of the fiber and/or the original seed- and adhesion layers markedly affect the response of the fibers to the acid treatment. Results also show that the nitric acid treatment increases the observed sp2 intensity and modifies the two types of fibers to become more-alike both structurally and with respect to their oxygen functionalities. The XAS and HRTEM results confirm that a short nitric acid treatment does not remove the Ni catalyst particle but, instead, oxidizes their surfaces, especially in the case of ta-C grown fibers.

U2 - 10.1021/acs.jpcc.6b06353

DO - 10.1021/acs.jpcc.6b06353

M3 - Article

VL - 120

SP - 22655

EP - 22662

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

M1 - 6b06353

ER -

ID: 8711726