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Eco-friendly Syntheses of Biomass and Polymer Derived Porous Carbon Based Nanocomposites: Biosensors, and Energy Storage Applications [10月28日(金)福岡工業大学]

2016/09/14

【科目種別】電気エネルギー講座Ⅱ(英語科目)

■講 師: Dr. Vediyappan Veeramani
■ご所属: Department of Chemical Engineering, National Taiwan University

■演 題: Eco-friendly Syntheses of Biomass and Polymer Derived Porous Carbon Based Nanocomposites: Biosensors, and Energy Storage Applications

■日 時: 平成 28年 10 月 28 日 (金) 13:00~14:30
■場 所: 福岡工業大学 A棟6階 電気工学専攻大学院ゼミ室
      http://www.fit.ac.jp/shisetsu/campus/map/index

■主 催: 福岡工業大学 大学院工学研究科
■共 催: 九州パワーアカデミー
■申込/お問合せ: 福岡工業大学大学院事務室 master[at]fit.ac.jp

■概要
  The existing carbon materials can be classified into activated carbon (0-dimensional), carbon nanotubes (CNT) (1-dimensional), graphene (2-dimensional) and carbon foams (3-dimensional). Among these, graphene is well known to be the top candidate; However, preparation of graphene from graphite is an intricate procedure that can lead to an explosion during the oxidation of graphite. Fascinatingly, the preparation of ACs is simple, environmentally friendly and cost-effective. Likewise, nitrogen-containing carbons have attracted increasing interest among the scientific community over the past few years as they improve the properties of bulk carbon for use in various applications. The incorporated nitrogen functional groups have a deep effect on the carbon properties. Hence, the polymer-derived AC offer truly outstanding specific capacitance approaching few hundreded frad/gram due to their electrical conductivity, basicity, oxidation stability, and catalytic activity are directly affected and often enhanced when nitrogen is introduced into the carbon structure. High surface area with graphene sheet-like porous activated carbon (GPAC) is prepared by a general and facile chemical activation method from bougainvillea spectabilis as selected precusors for the first time. Notably, the as-synthesized GPAC exhibited a maximum specific capacitance of 235 F g-1 at 1.6 A g-1 with excellent cyclic stability of about 98% at 5 A g-1 after 2000 charge discharge cycles. Moreover, the GPAC modified glassy carbon electrode (GCE) exhibit a significant performance for the highly sensitive detection of catechin (CA). Heteroatom-enriched high-surface area of activated carbons (HAC) derived from abundant banana-stem and its nanocomposites were prepared by the electrochemical deposition of NiO-NPs on porous HAC surface for the enzyme-free, highly sensitive electrochemical glucose sensors. Remarkably, the glucose detection exhibit a notable sensitivity and excellent detection limit (55 nM) with desirable selectivity, stability, even for practical analysis of real samples. Highly open space flower-and leaf-like nickel-cobalt oxide nanostructured materials with and without dopamine as a carbon source (D-NiCo2O4 and D- free NiCo2O4) is prepared by a low temperature chemical synthesis method with improved electrical conductivity, and surface area for high performance supercapacitors. Notably, the as-synthesized flower-like D-NiCo2O4 nanocomposite exhibited a maximum specific capacitance of 667 F g-1, which is superior to D- free NiCo2O4 viz. 202 F g-1 at 5 A g-1 with excellent cyclic stability of about 95% and 86% at 10 A g-1 after 2000 charge discharge cycles. These highly porous biomass and polymer derived carbons modified electrodes, which can be facily fabricated by the eco-friendly and cost-effective route, should have great potentials for practical applications in energy storage, biosensing.
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