Controllable Synthesis Of Nanomaterials And Their Application For Coupling Reaction

Owing to the unique physical and chemical properties that different from bulkmaterials, nanomaterials have been widely applied in catalysis, sensor, energy, andmedical remedy. Nanocatalysis have attracted much more attention for cross-couplingreaction, they exhibit superior properties compare to traditional catalysts, such as highactivity, easy separation, fine recyclability, cheap and low toxic. In this manuscript, thecontrollable synthesis of nanocatalysts, and their catalytic properties were investigated,including:(1) We synthesized CuO and Cu2O nanomaterials, and systematically investigatethe influence of size, morphology and oxidation state difference for C-N couplingreaction, a possible mechanism for CuO nanoparticles catalyzed coupling reaction wasproposed. And we proposed a feasible method for nanocatalysts design.(2) In light of the respective merits of metal nanoparticles and silicon nanowires,we synthesize copper nanoparticles decorated silicon nanowires. This hybridnanomaterial exhibit excellent catalytic activity for Ullmann reaction, especially whenapplying deactived benzene chlorides.(3) We improved the preparation of carbon nanospheres under hydrothermalconditions. Glucose was used as carbon precursor, and polyoxometalates as additive.The acidic and oxidizing properties of polyoxometalates to catalyze and control thegrowth of carbon nanosphere, with desired size and morphology. Further, we usecysteine modified carbon nanosphere for heavy metal ions detection.