研究目的
Investigating the feasibility of forming ordered TiNT layers from Ti-Cu alloys and their photocatalytic activity for H2 evolution.
研究成果
Uniformly Cu-doped TiO2 nanotubes can be grown from TiCu alloys, forming an efficient and stable photocatalyst for H2 evolution under UV irradiation. The enhancement is due to the formation of metallic Cu nanoparticles on the TiO2 surface, facilitating charge separation and electron transfer.
研究不足
The study is limited to Cu concentrations up to 1.5 at.% for well-ordered nanotube formation. Higher Cu concentrations lead to irregular structures.
1：Experimental Design and Method Selection:
Anodization of Ti-Cu alloys in ethylene glycol containing HF/H2O to grow Cu-doped TiO2 nanotubes.
2：Sample Selection and Data Sources:
Ti-Cu alloys with varying Cu concentrations (
3：5, 9, 5, 5, and 8 at.%). List of Experimental Equipment and Materials:
SEM (Hitachi FE-SEM 4800), HRTEM (FEI TITAN G2 60-300), XRD (X′pert Philips MPD), XPS (PHI 5600), EPR (JEOL JES-X-320).
4：0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Anodization, annealing, UV irradiation, and photocatalytic H2 evolution measurement.
5：Data Analysis Methods:
SEM, XPS, EPR for nanoparticle formation analysis; photocatalytic activity measurement under different light sources.
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