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Study on Preparation and Properties of Novel Functionalized Nanomaterials

Author: WeiWenTao
Tutor: SunJing; ChenWei
School: Changchun University of Science and Technology
Course: Inorganic Chemistry
Keywords: Nanomaterials Cu Nanoclusters Pd Nanoparticles ElectrocatalysisOxygen reduction
CLC: TB383
Type: Master's thesis
Year: 2012
Downloads: 85
Quote: 0
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Abstract


Nanomaterials with unique optical, electronic, magnetic and catalytic properties can have the great potential for new or enhanced application prospects in different fields. Herein, based on bottom-up wet chemical approach, we first prepared2-mercapto-5-n-propylpyrimidine-protected copper nanoclusters with the less than eight copper atoms of metal core. We found the copper nanoclusters displayed dual-wavelength fluorescence, with dual emissions at425and593nm, respectively. And, the synthesized copper nanoclusters exhibits high electrocatalytic activity for oxygen reduction. And we discussed the size effect and two-electron catalytic oxygen reduction mechanism of copper nanoclusters’on the basis of the experimental results. In addition, well-dispersed Pd nanoparticles supported on carbon nanodots were synthesized successfully without additional any surfactant and reductant. Compared to the commercial Pd-C catalysts, the novel functionalized Pd nannomaterials exhibit much higher electrocatalytic activity for methanol oxidation.

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