【摘要】 制备了Ag负载于质子化g-C₃N₄（pCN）的纳米棒材料（Ag/pCN）,对比了g-C₃N₄（CN）、表面负载Ag的CN（Ag/CN）、pCN和Ag/pCN在可见光条件下光催化降解亚甲蓝（MB）溶液的效果。结果表明,Ag/pCN光催化效率最高（92.63%）,并且具有良好的稳定性;通过光电流-时间（I-t）曲线、Nyquist曲线、Mott-Schokkty曲线和捕获实验探究了Ag/pCN光催化降解MB的机理:虽然pCN的π共轭体系较CN发生变化,但由于形成了纳米棒,其比表面积的增加以及Ag负载的协同效应致使Ag/pCN具有优异的光催化性能。光催化过程中羟基自由基（·OH）是起主要作用的活性物质,其由光生电子（e^-）与表面吸附的O₂反应产生以及光生空穴（h⁺）与H₂O或OH^-反应产生。更多还原

【Abstract】 Protonated g-C₃N₄ nanorod loaded with Ag（Ag/pCN） materials were prepared. The photocatalytic degradation of methylene blue（MB） solution was compared between g-C₃N₄（CN）, CN loaded with Ag（Ag/CN）, pCN, and Ag/pCN under visible light. Ag/pCN had the highest photocatalytic efficiency of 92.63% and exhibited good stability.The mechanism of photocatalytic degradation of MB by Ag/pCN was investigated through the photocurrent-time（I-t）curve, Nyquist curve, Mott-Schokkty curve, and capture experiment. Although the π conjugated system of pCN was disrupted, the synergistic effect of forming nanorods, increasing specific surface area, and loading Ag resulted in the excellent photocatalytic performance of Ag/pCN. Hydroxyl radicals（·OH） are the main active substances in the photocatalytic process. The active substance ·OH is produced by the reaction of photo-generated electrons（e^-） with O₂,as well as photo-generated holes（h⁺） with H₂O or OH^-.更多还原