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用水热法在二氧化钛纳米管上负载纳米铂微粒,制备出大比表面积、高表面原子数的载铂二氧化钛纳米管电极。SEM和XRD分析证明纳米管上已负载20～30nm的铂微粒。循环伏安测试结果表明:不含染料的体系中,载铂二氧化钛纳米管电极在0.13V处的氧化峰电流密度为Pt片电极的10倍;含染料的体系中,载铂二氧化钛纳米管电极上对酸性大红GR的氧化峰电流密度达到Pt片电极上的4.2倍。对酸性大红GR的降解实验表明,载铂二氧化钛纳米管电极催化活性高、降解快速高效。
Titanium dioxide nanotubes were loaded with nano-sized platinum particles by hydrothermal method to prepare platinum-supported titania nanotube electrodes with large specific surface area and high surface atomic number. SEM and XRD analysis proved that the nanotubes have been loaded platinum particles 20 ~ 30nm. Cyclic voltammetry test results show that: in the dye-free system, the oxidation peak current density of Pt-loaded nanotubes at 0.13V is 10 times that of Pt electrode; in dye-containing systems, The oxidation peak current density of acid red GR reaches 4.2 times of that of Pt sheet electrode. Degradation of acid red GR shows that the catalytic activity of platinum-loaded titania nanotubes is high and the degradation is rapid and efficient.