Pulsed-laser-deposited TiO2 nanocrystalline films supporting Au nanoparticles for visible-light-operating plasmonic photocatalysts
Pulsed-laser-deposited TiO2 nanocrystalline films supporting Au nanoparticles for visible-light-operating plasmonic photocatalysts
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DOI：
10.1007/s00339-016-0035-6
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发表时间：
2016-04
期刊：
影响因子：
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通讯作者：
Takehito Yoshida;Tei Watanabe;Fumito Kikuchi;Takeru Tabuchi;I. Umezu;M. Haraguchi
中科院分区：
文献类型：
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作者：
Takehito Yoshida;Tei Watanabe;Fumito Kikuchi;Takeru Tabuchi;I. Umezu;M. Haraguchi
我们采用脉冲激光沉积法（PLD）制备了负载Au纳米颗粒的TiO 2纳米晶薄膜。在PLD制备的TiO 2纳米晶薄膜上沉积了质量厚度为4 nm的Au薄膜。沉积态的Au薄膜具有岛状结构。在空气中300 °C退火180 min后，在PLD TiO 2纳米晶薄膜上形成平均直径为19 nm的岛状Au薄膜。我们证实了球形Au纳米粒子在510-600 nm范围内具有局域表面等离子体共振吸收带。采用亚甲基蓝分解法评价了Au负载TiO 2纳米晶薄膜的光催化活性。我们澄清了Au负载的TiO 2纳米晶薄膜表现出可见光驱动的光催化活性，在过滤（490-500 nm）弧光灯照射。
We have synthesized pulsed-laser-deposited (PLD) TiO2nanocrystalline films supporting Au nanoparticles. Au films were deposited on the PLD TiO2nanocrystalline films with the mass thickness of 4 nm. The as-deposited Au films had island structures. After furnace annealing at 300 °C for 180 min in air, the as-deposited island-structured Au films were balled with the mean diameter of 19 nm on the PLD TiO2nanocrystalline films. We confirmed that the balled Au nanoparticles had the localized surface plasmonic resonance absorption band in the range of 510–600 nm. Photocatalytic activities of the Au-supporting TiO2nanocrystalline films were evaluated by a methylene blue decomposition method. We clarified that the Au-supporting TiO2nanocrystalline films demonstrated visible-light-driven photocatalytic activities, under the filtered (490–500 nm) Xe arc lamp irradiation.