银基等离激元效应驱动光电催化析氢反应的应用研究
Application of silver-based surface plasmon resonance effect in photoelectrocatalytic hydrogen evolution reaction
以银作为等离激元效应供体,负载铂为助催化剂,在金属钛片基底上通过二次离子溅射法成功制备了光电催化析氢自支撑电极(Pt-Ag/Ti foil)。电极的微观形貌、晶体结构和光吸收性能采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和紫外-可见光分光光度计进行表征。对银电极和银铂复合电极进行光电催化析氢性能测试,结果表明,银的等离激元效应可有效驱动光电催化析氢反应的发生,并且负载铂纳米颗粒后加速了电极界面析氢反应动力学过程,使其光响应电流波动值增加了2.48倍。
A self-supported electrode (Pt-Ag/Ti foil) for photoelectrocatalytic hydrogen evolution reaction is successfully fabricated on a titanium-sheet substrate through secondary ion sputtering method by utilizing silver as a surface plasmon resonance effect donor and the covered platinum as a cocatalyst.The microstructure,crystal structure and light absorption properties of the prepared electrode are characterized by means of scanning electron microscopy (SEM),X-ray diffractometry (XRD),and UV-visible spectrophotometry.The photoelectrocatalytic performance of Ag/Ti foil electrode and Pt-Ag/Ti foil composite electrode are investigated in hydrogen evolution reaction.It is demonstrated that the surface plasmon resonance effect of silver can effectively drive the photoelectrocatalytic hydrogen evolution reaction,while platinum nanoparticle coverage accelerates the hydrogen evolution kinetic process at the electrode interface,and enhances the amplitude of photo-response current by 2.48 times.
silver / hydrogen evolution reaction / photoelectrocatalyst / surface plasmon resonance effect
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山西省基础研究计划资助项目(202203021222328)
山西工学院科研启动经费项目(200101)
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