GOND is synthesized through amidation reaction with graphene oxide nanosheets(GO)as a basic carrier and N,N-diethyl ethylenediamine(ND)as a modifier,and used as solid particles for stabilizing Pickering emulsion.GOND is used as a carrier for Pd to prepare Pd/GOND,which is used in the selective oxidation of benzyl alcohol to make benzaldehyde.The prepared GOND is characterized by means of SEM,FT-IR,zeta potential,and XPS.Results show that the ND modification is the main reason that the emulsifier is able to adsorb stably at the oil/water interface.The material still exhibits high emulsion stability at pH＞7 when the mass ratio of GO to ND is 1:4.GOND at a low mass concentration(1 mg·mL-1)can be stabilized to form Pickering emulsion with uniform size(140 μm).In addition,the Pd/GOND emulsion catalyst can effectively improve the conversion of benzyl alcohol.The conversion rates of benzyl alcohol catalyzed by Pd/GO and Pd/GOND are 0％and 76％,respectively.
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