Gold nanoparticles (Au NPs) were loaded on rutile (R)- and anatase (A)-TiO₂ with the mean size varied and the loading amount maintained constant by the heating temperature-varied deposition-precipitation technique. Loading Au NPs on R-TiO₂ (Au/R-TiO₂) dramatically enhances the plasmonic photocatalytic activity for the decomposition of 2-naphthol under visible-light irradiation (λ_ex > 430 nm), whereas the activity of Au/A-TiO₂ remains a low level. Also, the photocatalytic activity of Au/R-TiO₂ drastically increases with decreasing mean Au particle size or increasing Au surface area in spite that the localized surface plasmon resonance (LSPR) significantly weakens. These results are comprehensively rationalized in terms of the adsorption property of the photocatalysts for 2-naphthol. Further, mesoporous films consisting of Au/TiO₂ particles were formed on fluorine-doped tin oxide electrode (Au/TiO₂/FTO). The action spectra of the initial rate of the potential shift for a three-electrode photoelectrochemical cell using Au/TiO₂/FTO as the working electrode indicates that this reaction proceeds via the LSPR-induced hot-electron transfer mechanism.

金纳米颗粒（Au NPs）负载在金红石（R）-和锐钛矿（A）-TiO _2上，其平均尺寸变化，并且负载量通过加热温度可变的沉积沉淀技术保持恒定。在R-TiO ₂（Au / R-TiO ₂）上负载Au NPs显着增强了可见光（_λex  > 430 nm）下2-萘酚分解的等离子体光催化活性，而Au / A-的活性TiO ₂保持低水平。另外，Au / R-TiO ₂的光催化活性尽管局部表面等离子体激元共振（LSPR）明显减弱，但随着平均Au粒径的减小或Au表面积的增加而急剧增加。这些结果根据光催化剂对2-萘酚的吸附性能进行了全面合理化。此外，在掺氟氧化锡电极（Au / TiO ₂ / FTO）上形成由Au / TiO ₂颗粒组成的中孔膜。以Au / TiO ₂ / FTO为工作电极的三电极光电化学电池的电势初始速率变化谱表明，该反应是通过LSPR诱导的热电子转移机理进行的。