TY - JOUR
T1 - Fabrication of a Pt film with a well-defined hierarchical pore system via "solvent-evaporation-mediated direct physical casting"
AU - Yamauchi, Yusuke
AU - Kuroda, Kazuyuki
N1 - Funding Information:
We acknowledge Profs. T. Osaka and T. Momma (Applied Physical Chemistry Laboratory, Waseda University) for critical suggestion on the electrochemical processes and continuous encouragement. We also acknowledge Prof. T. Ohsuna (Waseda University) for critical comments on structural characterization, Dr. A. Shimojima (University of Tokyo), Mr. Y. Kuroda, Ms. M. Sakurai (Waseda University) for helpful discussion on colloidal crystal templating, Ms. M. Abe (Waseda University) for experimental supports, and Mr. Y. Morioka (Waseda University) for illustration of Scheme 1 . This work is supported by the Encouraging Development Strategic Research Centers Program (Super COE) “Establishment of Consolidated Research Institute for Advanced Science and Medical Care” from Ministry of Education, Culture, Sports, Science and Technology (MEXT). This work is also supported by A3 Foresight Program “Synthesis and Structural Resolution of Novel Mesoporous Materials” from Japan Society for the Promotion of Science (JSPS). One of the present authors (Y.Y.) is grateful for financial support via a Grant-in-Aid for JSPS Fellows from MEXT.
PY - 2006/10
Y1 - 2006/10
N2 - We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.
AB - We fabricated a well-ordered Pt thin film with a bimodal pore system by combining the modified liquid crystal templating method (solvent-evaporation-mediated direct physical casting, SEDPC) with colloidal crystal templating. The direct observation of the film by high-resolution scanning microscopy (HR-SEM) showed the formation of a hierarchical porous structure. The resulting Pt film possesses macropores (ca. 460 nm), interconnected windows (ca. 100 nm), and mesopores (ca. 3-4 nm). Macropore wall consists of small nanoparticles of ca. 3 nm in size. These nanoparticles are interconnected to create mesoporosity. The cyclic voltammogram of the resulting Pt film in sulfuric acid revealed a typical feature which can identify the clean Pt surface.
KW - Colloidal crystal templating
KW - Electrode material
KW - Hierarchical structure
KW - Lyotropic liquid crystal
KW - Mesoporous metal
KW - Platinum
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U2 - 10.1016/j.elecom.2006.08.005
DO - 10.1016/j.elecom.2006.08.005
M3 - Article
AN - SCOPUS:33749513181
SN - 1388-2481
VL - 8
SP - 1677
EP - 1682
JO - Electrochemistry Communications
JF - Electrochemistry Communications
IS - 10
ER -