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Huang H.,Key Laboratory of Soft Chemistry and Functional Materials | Wang X.,Key Laboratory of Soft Chemistry and Functional Materials
Journal of Materials Chemistry A | Year: 2014

With the continuously increasing demand of energy along with depletion of conventional fossil fuel reserves and the rapidly escalating environmental problems, direct methanol fuel cells (DMFCs) as alternative green and sustainable power sources have aroused tremendous research interest in academic and engineering circles. In order to achieve high power density as well as low production cost of DMFCs, the well-designed and fabricated anode catalysts with controllable composition, architecture and morphology have been regarded as a key point for realizing high-performance. In this aspect, carbon materials, as building blocks, offer a great potential to play a key role in constructing advanced hybrid catalysts due to their exceptional physicochemical properties, such as high specific surface area, superior electronic conductivity, excellent stability and so on. This review summarizes the recent significant progress in the design and fabrication of novel carbon-based anode catalysts via various strategies and their applications in methanol oxidation reaction. Finally, perspectives on the challenges and research trends in this emerging area are also discussed. This journal is © the Partner Organisations 2014.

Hao Q.,Key Laboratory of Soft Chemistry and Functional Materials | Xie X.,Institute of Industrial Chemistry | Lei W.,Institute of Industrial Chemistry | Xia M.,Institute of Industrial Chemistry | And 2 more authors.
Journal of Physical Chemistry C | Year: 2010

Semiconducting polytriphenylene (PTP), a bright blue-green-light emitter, with good electrochemical behavior, excellent thermal stability, and the electrical conductivity of 10-3 S cm-1 was synthesized successfully by direct anodic oxidation of triphenylene (TP) in different media. The oxidation potential onset of TP in boron trifluoride diethyl etherate containing 3% concentrated sulfuric acid (SA) was reduced to 0.94 V, compared with other electrolyte media. The possible structure of the obtained PTP was investigated by ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, and 1D and 2D NMR techniques, respectively. The results showed that the PTP was grown via the coupling of the monomer mainly at the meta position of the benzene ring in TP. Fluorescence spectra indicated that the electrochemically polymerized PTP was an excellent blue-green-light-emitting material with fluorescence quantum yield as high as 0.43. In addition, the morphology and thermal stability of the polymers were also explored by means of scanning electron microscopy and thermal analyzer. The average molecular weight (19 980 g mol-1) and its polydispersity of dedoped PTP were determined by gel permeation chromatography. © 2010 American Chemical Society.

Zhu J.,Key Laboratory of Soft Chemistry and Functional Materials | Zeng G.,China Academy of Engineering Physics | Nie F.,China Academy of Engineering Physics | Xu X.,Key Laboratory of Soft Chemistry and Functional Materials | And 3 more authors.
Nanoscale | Year: 2010

A facile chemical procedure capable of aligning CuO nanoparticles on graphene oxide (GO) in a water-isopropanol system has been described. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations indicate that the exfoliated GO sheets are decorated randomly by spindly or spherical CuO nanoparticle aggregates, forming well-ordered CuO:GO nanocomposites. A formation mechanism of these interesting nanocomposites is proposed as intercalation and adsorption of Cu2+ ions onto the GO sheets, followed by the nucleation and growth of the CuO crystallites, which in return resulted in the exfoliation of GO sheets. Moreover, the obtained nanocomposites exhibit a high catalytic activity for the thermal decomposition of ammonium perchlorate (AP), due to the concerted effect of CuO and GO. © 2010 The Royal Society of Chemistry.

Huang H.,Key Laboratory of Soft Chemistry and Functional Materials | Chen H.,Changzhou University | Sun D.,Key Laboratory of Soft Chemistry and Functional Materials | Wang X.,Key Laboratory of Soft Chemistry and Functional Materials
Journal of Power Sources | Year: 2012

A soft chemical method has been developed to load Pt nanoparticles on graphene nanoplates (GNPs) without damaging their graphene structures. Our approach does not require cumbersome oxidation of graphite in advance and needs no subsequent reduction of graphene oxide (GO) with reducing agents or by thermal treatment. Transmission electron microscope observation reveals that Pt nanoparticles with an average diameter of 2.3 nm are uniformly dispersed on the GNP surface. Raman spectroscopy confirms the GNPs have a very low defect density. This graphene nanoplate-Pt (GNP/Pt) composite exhibits superior electrochemical activity and high poison tolerance toward methanol oxidation compared to reduced graphene oxide-Pt (RGO/Pt) and Vulcan XC-72-Pt (XC-72/Pt) with the same Pt content, which demonstrate that the GNPs can be used as promising electrocatalyst supports for direct methanol fuel cells. © 2012 Elsevier B.V. All rights reserved.

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