Molten Intermediate Transportation-Oriented Synthesis of Amino-Rich g-C3N4 Nanosheets for Efficient Photocatalytic H2O2 Production
To eliminate the additional assistance of previously reported strategies for the synthesis of g-C3N4 nanosheets such as templates,strong acids and alkalis,in this study,an innovative pattern for transportation of molten g-C3N4 intermediates,without any additional substance assistance,has been resoundingly established to produce amino-rich g-C3N4 nanosheets.The innovative pattern concretely contains the preliminary placement of melamine onto the top platform of an inverted crucible and their subsequent one-step calcination.During the calcination process,melamine and its subsequently formed g-C3N4 intermediate can transform into a molten state and gradually stream down along the outer surface of inverted crucible.This molten intermediate transportation pattern contributes to remarkably resist severe aggregation,resulting in the final polymerization into amino-rich g-C3N4 nanosheets in sequence.Moreover,the resultant amino-rich g-C3N4 nanosheets exhibit an evidently enhanced photocatalytic H2O2-production rate of ca.85.8 μmol·L-1·h-1,over 2 times superior to bulk g-C3N4,mainly due to the fact that in addition to their nanosheet structures with enhanced specific surface areas,their amino-rich structures can efficiently reinforce the adsorption of O2 and *OOH intermediates to accelerate their effective transformation into H2O2.This work delivers an innovative pattern to synthesize amino-rich g-C3N4 nanosheets with an insight into the photocatalytic mechanism.
Photocatalysisg-C3N4 nanosheetsAmino-richIntermediate transportationH2O2 production
国家科技期刊平台
NSTL
万方数据
