TY - JOUR
T1 - Carbon-coated mesoporous silica with hydrophobicity and electrical conductivity
AU - Nishihara, Hirotomo
AU - Fukura, Yu
AU - Inde, Kouta
AU - Tsuji, Katsuyuki
AU - Takeuchi, Masataka
AU - Kyotani, Takashi
N1 - Funding Information:
We are grateful to Drs. K. Kamegawa and R. Gadiou for helpful discussions. We also thank Drs. N. Setoyama and Y. Fukushima for kindly supplying mesoporous silicas FSM-10 and FSM-16. This research was partially supported by a Grant-in-Aid for Scientific Research (A) (18201020) from the Ministry of Education, Science, Sports and Culture, Japan.
PY - 2008/1
Y1 - 2008/1
N2 - The pore surface of mesoporous silica SBA-15 was coated with 2,3-dihydroxynaphthalene (DN) through a dehydration reaction between the surface silanol groups in SBA-15 and the hydroxyl groups of the DN molecules. By the carbonization of DN in the SBA-15 pores, the pore surface was uniformly covered with an extremely thin carbon layer, which comprised only 1-2 graphene sheets. The resulting carbon-coated SBA-15 still possessed the characteristics of the original SBA-15-large surface area and pore volume, long-range ordered structure, and sharp mesopore size distribution. In addition, the carbon-coated SBA-15 showed marked hydrophobicity and high electrical conductivity, both of which are not intrinsic properties of SBA-15. The appearance of these features can be explained from the almost perfect carbon coating on the pore surface. Newly developed graphene coating technique can donate characteristic carbon properties to mesoporous silica.
AB - The pore surface of mesoporous silica SBA-15 was coated with 2,3-dihydroxynaphthalene (DN) through a dehydration reaction between the surface silanol groups in SBA-15 and the hydroxyl groups of the DN molecules. By the carbonization of DN in the SBA-15 pores, the pore surface was uniformly covered with an extremely thin carbon layer, which comprised only 1-2 graphene sheets. The resulting carbon-coated SBA-15 still possessed the characteristics of the original SBA-15-large surface area and pore volume, long-range ordered structure, and sharp mesopore size distribution. In addition, the carbon-coated SBA-15 showed marked hydrophobicity and high electrical conductivity, both of which are not intrinsic properties of SBA-15. The appearance of these features can be explained from the almost perfect carbon coating on the pore surface. Newly developed graphene coating technique can donate characteristic carbon properties to mesoporous silica.
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U2 - 10.1016/j.carbon.2007.10.024
DO - 10.1016/j.carbon.2007.10.024
M3 - Article
AN - SCOPUS:38649115004
SN - 0008-6223
VL - 46
SP - 48
EP - 53
JO - Carbon
JF - Carbon
IS - 1
ER -