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采用水热法和光沉积法制备了Au/SrTiO_3纳米等离子体光催化剂。通过XRD、XPS、SEM、TEM、EDS和DRS等技术对光催化剂的结构、组成、形貌、粒子大小和光吸收性质等进行了表征,考察了Au/SrTiO_3纳米光催化剂在可见光照下的制氢性能。结果表明,采用水热法成功合成了SrTiO_3纳米粒子,通过负载Au纳米粒子后,由于表面等离子体共振效应,增强了其对可见光的吸收。此外,测试了不同Au负载量对SrTiO_3光催化剂在可见光照下制氢活性的影响,其中,5%Au/SrTiO_3光催化剂在可见光照下制氢活性最高,并对其光催化反应机理进行了进一步的探讨。
Au / SrTiO_3 nano-plasma photocatalysts were prepared by hydrothermal method and photo-deposition method. The structure, composition, morphology, particle size and optical absorption properties of the photocatalyst were characterized by XRD, XPS, SEM, TEM, EDS and DRS techniques. The photocatalytic activity of Au / SrTiO_3 photocatalyst under visible light irradiation was investigated. performance. The results show that the SrTiO_3 nanoparticles were successfully synthesized by hydrothermal method and their absorption of visible light was enhanced by surface plasmon resonance after they were loaded with Au nanoparticles. In addition, the effect of different Au loadings on the hydrogen production activity of SrTiO_3 photocatalysts under visible light was tested. Among them, 5% Au / SrTiO_3 photocatalysts exhibited the highest hydrogen production activity in visible light and the photocatalytic reaction mechanism was further improved Discussion.