Synthesis And Performance Of Copper/h-bn Core-shell Structure

Recently,two-dimensional materials gain new momentum with the discovery of graphene due to their superior physical chemistry properties.Among them,hexagonal boron nitride(h-BN),a wide band gap and chemical inertness,has wide application prospects in the fields of photoelectricity device,protective agent,and lubricant,etc.However,the lack of prepare methods and the complicated proceed of h-BN nanoplates makes its prepare method still need to be improved,which is mainly due to the stronger Van der Waals' force than graphite results that difficult exfoliation by traditional method.In addition,it is a challenging issue in how to enhance stability of active metallic through take advantage of h-BN chemistry inertness.This paper main studied the prepare method and functionalization application of h-BN nanoplates,and acquired the following major conclusions:1.Successfully developed a feasible strategy to synthesize Cu nanoparticles covered and highly dispersed by h-BN layers via one-step thermal decomposition.The Cu nanoparticles remain very stable in air at room temperature without any obvious oxidation.Furthermore,high anti-oxidation Cu nanoparticles exhibit remarkable promoting activity for the thermal decomposition of perchlorate ammonium(AP),and excellent performance of catalysis reduction p-nitrophenol to p-aminophenol,indicating the coating of h-BN layers does not impede catalytic reactions occurred on the metal surface.The encapsulation by h-BN thus not only stabilizes Cu nanoparticles but also maintains their high activity.This approach can potentially be extended to other metal nanoparticles.2.A simple method of synthesizing h-BN nanoplates was using the modified above prepare method.The obtained h-BN nanoplates measure ca.50nm in diameter and 1.6 nm in thickness.Moreover,we showed that aqueous colloid of h-BN nanoplates can be successfully prepared without stabilizer/co-solvent and the concentration up to ca.20 mg/mL.3.Found the photoluminescence of h-BN nanoplates at 440 and 800 nm.What's more,the narrow emission range is important for the high precision photoelectricity device.The cathodoluminescene of h-BN nanoplates was found at 350 nm.