Chemical structural analysis of diamond-like carbon by X-ray

photoelectron spectroscopy

Susumu Takabayashia, Keishi Okamotoa,b, Tatsuyuki Nakatanib,

Hiroyuki Sakauea, Takayuki Takahagia

a Department of Quantum Matter, Graduate School of Advanced

Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-

Hiroshima, Hiroshima 739-8530, Japanb Toyo Advanced Technologies Co. Ltd., 5-3-38 Ujina-Higashi,

Minami-ku, Hiroshima 734-8501, Japan

Diamond-like carbon (DLC) is an amorphous carbonaceous

material composed of sp2 carbon, sp3 carbon, and hydrogen. We

have analyzed the chemical structure of DLC using X-ray photo-

electron spectroscopy (XPS). The C 1s spectra of the DLC films

were analyzed using the Doniach–Sunjic function convoluted

with a Gaussian function. The spectra were decomposed into four

components as follows: sp3 carbon with carbon–carbon bonds (C–

C sp3 carbon, 283.8 eV), sp2 carbon with carbon–carbon bonds (C–C

sp2 carbon, 284.3 eV), sp2 carbon with hydrogen–carbon bonds (H–

C sp2 carbon, 284.8 eV), and sp3 carbon with hydrogen–carbon

bonds (H–C sp3 carbon, 285.3 eV).

[TANSO 2008;(235):280–9.]

doi:10.1016/j.carbon.2008.11.023

Carbons stabilizing nanometals

Hirofumi Kanoh

Graduate School of Science, Chiba University, 1-33 Yayoi-cho, Inage,

Chiba 263-8522, Japan

Nanoporous metals and nanometals need stabilizers which

prevent them from sintering or oxidizing. Nanoporous Pt, Ni, or

Pd, which were prepared by using silica nanoparticles or PVA

films as templates, can be stabilized by a trace amount of car-

bons, which coats the surfaces of the metals. Single wall carbon

nanohorns can also be a good stabilizer and catalyst support.

The properties of such nanocarbons are reviewed for the stabil-

ization of nanometals.

[TANSO 2008;(235):290–5.]

doi:10.1016/j.carbon.2008.11.024

Characteristics of the interface in porous carbon materials and its

applied technology

Hirokazu Oda

Faculty of Engineering, Kansai University, High Technology Center,

3-3-35, Yamate-cho, Suita 564-8680, Japan

It is considered that the total performance of porous carbon

materials have been appraised almost entirely by specific surface

area, pore-size and its distribution, while little attention has been

paid to the problems of the interface chemistry and the physico-

chemical nature of the surface of carbon materials. The proce-

dures for the modification of the various kind of carbons are

described and a standardization of the formed functional groups

and pore structure of carbons was demonstrated. The quantita-

tive effect of functional groups of activated carbon electrodes

on the electric double layer and removal of various electrolytes

from aqueous solution and/or recycling operation characteristics

are reported as its application.

[TANSO 2008;(235):296–306.]

doi:10.1016/j.carbon.2008.11.025

Synthesis of nano-carbons by using the template method

Takashi Kyotani, Hironori Orikasa, Hirotomo Nishihara

Institute for Multidisciplinary Research for Advanced Materials, Tohoku

University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

[TANSO 2008;(235):307–15.]

doi:10.1016/j.carbon.2008.11.026

Metallurgical coke

Izumi Shimoyama, Kiyoshi Fukada

Ironmaking Research Department, Steel Research Laboratory, JFE Steel

Corp., 1 Kokan-cho Fukuyama 721-8510, Japan

[TANSO 2008;(235):316–24.]

doi:10.1016/j.carbon.2008.11.027

1208 C A R B O N 4 7 ( 2 0 0 9 ) 1 2 0 7 – 1 2 0 8