光催化
材料科学
漫反射红外傅里叶变换
可见光谱
表面等离子共振
光化学
异质结
光谱学
等离子体子
催化作用
纳米颗粒
纳米技术
光电子学
化学
有机化学
物理
量子力学
作者
Jinjuan Xue,Shuaishuai Ma,Yuming Zhou,Zewu Zhang,Min He
标识
DOI:10.1021/acsami.5b01212
摘要
A novel plasmonic photocatalyst, Au/Pt/g-C3N4, was prepared by a facile calcination-photodeposition technique. The samples were characterized by X-ray diffraction, energy-dispersive spectroscopy, transmission electron microscopy, and UV–vis diffuse reflectance spectroscopy, and the results demonstrated that the Au and Pt nanoparticles (7–15 nm) were well-dispersed on the surfaces of g-C3N4. The Au/Pt codecorated g-C3N4 heterostructure displayed enhanced photocatalytic activity for antibiotic tetracycline hydrochloride (TC-HCl) degradation, and the degradation rate was 3.4 times higher than that of pure g-C3N4 under visible light irradiation. The enhancement of photocatalytic activity could be attributed to the surface plasmon resonance effect of Au and electron-sink function of Pt nanoparticles, which improve the optical absorption property and photogenerated charge carriers separation of g-C3N4, synergistically facilitating the photocatalysis process. Finally, a possible photocatalytic mechanism for degrading TC-HCl by Au/Pt/g-C3N4 heterostructure was tentatively proposed.
科研通智能强力驱动
Strongly Powered by AbleSci AI