N-doped graphene quantum dots as an effective photocatalyst for the photochemical synthesis of silver deposited porous graphitic C3N4 nanocomposites for nonenzymatic electrochemical H2O2 sensing

作者：Jiang, Deli^*; Zhang, Yuan; Chu, Haoyu; Liu, Jie; Wan, Jin; Chen, Min

来源：RSC Advances, 2014, 4(31): 16163-16171.

DOI：10.1039/c4ra00601a

• METAL-FREE ELECTROCATALYSTS
• CARBON NITRIDE NANOSHEETS
• HYDROGEN-PEROXIDE
• AG NANOPARTICLES
• OXYGEN REDUCTION
• GREEN SYNTHESIS
• SUBSEQUENT DECORATION
• FACILE SYNTHESIS
• REDUCING AGENT
• LOW-COST

In this work, nitrogen-doped graphene quantum dots (N-GQDs) were proved to be an efficient photocatalyst for photochemical synthesis of Ag nanoparticle loaded porous graphitic C3N4 (p-g-C3N4) for the first time. The Ag nanoparticles were well-formed in high yield and closely anchored at the surface of p-g-C3N4 with uniform size distribution. Importantly, the as-prepared Ag/p-g-C3N4 nanocomposites exhibited excellent catalytic activity towards electrocatalytic reduction of hydrogen peroxide (H2O2). The cyclic voltammetry and amperometry results show that the sensor of the asprepared Ag/p-g-C3N4 composite exhibits excellent analytical response to H2O2 with fast response, wide linear range and low detection limit.

• 出版日期2014
• 单位江苏大学