多孔与双层空心结构Cu2O粉末的制备及其光电化学制氢性能对比研究
Comparative Study on Preparation and Photoelectrochemical Hydrogen Production Performance of Porous and Double-Layer Hollow Structured Cu2O Powders
DOI: 10.12677/ms.2026.166136, PDF,    科研立项经费支持
作者: 朱雪娅, 刘大明, 安 文：兴义民族师范学院物理与工程技术学院，贵州 兴义；郝艳玲*：兴义民族师范学院物理与工程技术学院，贵州 兴义；黔西南州微纳功能材料重点实验室，贵州 兴义
关键词: 氧化亚铜；多孔结构；双层空心球；光电化学性能；Cuprous Oxide； Porous Structure； Double-Layer Hollow Spheres； Photoelectrochemical Performance
摘要: 氧化亚铜(Cu2O)作为一种典型的p型半导体材料，在光催化分解水制氢领域展现出巨大的应用潜力。然而，其严重的光生载流子复合和易光腐蚀问题限制了其实际光电转化效率。本文分别采用液相还原法与溶剂热法，成功制备了形貌规整的多孔Cu2O纳米球与双层空心Cu2O纳米球，最终收集的产物均为高纯度的粉末样品，通过对比研究发现，双层空心结构能够诱导能带窄化(Eg ≈ 2.02 eV)，且其内部空腔产生的“光限域效应”通过多重反射显著增强了光子捕捉概率。电化学测试显示，该结构具有更小的电荷转移阻抗和更强的瞬态光电流响应，这归功于其薄壳层缩短了载流子传输路径。然而，由于较高的缺陷密度加剧了载流子复合，其IPCE表现逊于多孔纳米球。本研究揭示了形貌调控对Cu2O光吸收与载流子动力学行为的协同影响规律。
Abstract: Cuprous oxide (Cu2O), as a typical p-type semiconductor material, shows great potential in the field of photocatalytic water splitting for hydrogen production. However, its severe photogenerated carrier recombination and susceptibility to photo-corrosion limit its actual photoelectric conversion efficiency. In this study, porous Cu2O nanospheres and double-layer hollow Cu2O nanospheres with regular morphologies were successfully prepared using liquid-phase reduction and solvothermal methods, respectively. The final collected products were all high-purity powder samples. Comparative studies revealed that the double-layer hollow structure can induce band narrowing (Eg ≈ 2.02 eV), and the “light confinement effect” generated by the internal cavity significantly enhances the probability of photon capture through multiple reflections. Electrochemical tests show that this structure has smaller charge transfer resistance and stronger transient photocurrent response, which is attributed to its thin shell shortening the carrier transport path. However, due to the higher defect density exacerbating carrier recombination, its IPCE performance is inferior to that of porous nanospheres. This study reveals the synergistic impact of morphology regulation on Cu2O light absorption and carrier dynamics behavior.
文章引用：朱雪娅, 刘大明, 安文, 郝艳玲. 多孔与双层空心结构Cu2O粉末的制备及其光电化学制氢性能对比研究[J]. 材料科学, 2026, 16(6): 39-46. https://doi.org/10.12677/ms.2026.166136

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