开发高性能、低成本的非贵金属光电水解制氢电极,有助于推动地方能源结构转型,助力我国实现“双碳”战略目标。采用阳极氧化法和电化学沉积法在金属钛基底上制备了负载钼镍合金非贵金属助催化剂的二氧化钛光电析氢自支撑电极(MoNix-TiO2/Ti foil)。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(UV-Vis)对复合电极的微观结构及光吸收性能进行表征。光电催化析氢性能测试结果表明,钼镍合金颗粒的负载可有效提升二氧化钛电极(TiO2/Ti foil)的光电催化性能,所制备的MoNix-TiO2/Ti foil复合电极的光电析氢性能是TiO2/Ti foil电极的近13倍。这种通过使用非贵金属催化剂来增强半导体光电极性能的方法,促进了光电催化制氢技术的商业化进程。
The development of high-performance,low-cost non-precious metal photoelectrocatalytic electrodes for water splitting hydrogen production would accelerate regional energy transformation and significantly support China's “dual carbon” goals.In this paper,a self-supporting photo-electrode (MoNix-TiO2/Ti foil) coated with a molybdenum-nickel alloy non-precious metal co-catalyst was fabricated on a titanium substrate through anodic oxidation and electrochemical deposition techniques.The microstructure and light absorption properties of the composite electrode were characterized using scanning electron microscopy (SEM),X-ray diffraction (XRD),and ultraviolet-visible spectrophotometry (UV-Vis).The experimental results demonstrated that the incorporation of molybdenum nickel alloy particles significantly enhanced the photoelectrocatalytic performance of titanium oxide electrodes (TiO2/Ti foil).Specifically,the photoelectrochemical hydrogen evolution performance of the as-prepared MoNix-TiO2/Ti foil composite electrode was nearly 13 times that of the TiO2/Ti foil electrode.The utilization of non-precious metal catalysts to enhance the performance of semiconductor photoelectrodes substantially enhanced the commercial viability of photocatalytic hydrogen production technology.
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基金资助
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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