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Author Okamoto, Minoru ♦ Fujigaya, Tsuyohiko ♦ Nakashima, Naotoshi
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley-VCH
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences ♦ Life sciences; biology ♦ Physiology & related subjects ♦ Biochemistry ♦ Technology ♦ Medicine & health ♦ Human physiology ♦ Pharmacology and therapeutics ♦ Diseases ♦ Manufacture for specific uses ♦ Precision instruments & other devices
Subject Domain (in MeSH) Inorganic Chemicals ♦ Heterocyclic Compounds ♦ Chemicals and Drugs ♦ Investigative Techniques ♦ Equipment and Supplies ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment ♦ Chemical Phenomena ♦ Biological Sciences ♦ Natural Science Disciplines ♦ Physical Sciences
Subject Keyword Discipline Nanotechnology ♦ Azoles ♦ Chemistry ♦ Crystallization ♦ Methods ♦ Electric Power Supplies ♦ Microelectrodes ♦ Nanotechnology ♦ Instrumentation ♦ Nanotubes, Carbon ♦ Platinum ♦ Catalysis ♦ Equipment Design ♦ Equipment Failure Analysis ♦ Materials Testing ♦ Journal Article ♦ Research Support, Non-u.s. Gov't
Abstract A newly designed and fabricated novel nanocomposite composed of multiwalled carbon nanotubes (MWNTs), poly(benzimidazole) (PBI), and Pt nanoparticles. This composite is fabricated by the preparation of PBI-wrapped MWNTs (MWNT/PBI), followed by Pt loading onto the MWNT/PBI. As a result of the PBI wrapping, the loading efficiency of the Pt nanoparticles onto the MWNTs is dramatically improved up to 58.8% compared to that of the pristine MWNTs (41.0%). The process also allows homogeneous Pt immobilization onto the surface of MWNTs without any strong oxidation process for the MWNTs that is typically used for metal supporting on carbon nanotubes. Far-IR spectroscopy of the composite shows a peak from the Pt--N bonding, indicating that these improvements are derived from the coordination of the Pt ion with the PBI molecules. Cyclic voltammogram measurements reveal that the Pt nanoparticles deposited on the MWNT/PBI shows higher utilization efficiency (74%) for electrocatalysts compared to that on the pristine MWNT (39%).
Description Author Affiliation: Okamoto M ( Department of Applied Chemistry Graduate School of Engineering, Kyushu University 744 Motooka, Fukuoka 819-0395 (Japan).)
ISSN 16136810
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2009-03-01
Publisher Place Germany
e-ISSN 16136829
Journal Small
Volume Number 5
Issue Number 6

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Source: WHO-Global Index Medicus