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Photocatalytic Growth of Hierarchical Au Needle Clusters on Highly Active TiO2 Thin Film
Advanced Materials Interfaces ( IF 5.4 ) Pub Date : 2018-06-26 , DOI: 10.1002/admi.201800465
Salih Veziroglu 1 , Muhammad Zubair Ghori 1 , Marius Kamp 2 , Lorenz Kienle 2 , Horst-Günter Rubahn 3 , Thomas Strunskus 1 , Jacek Fiutowski 3 , Jost Adam 3 , Franz Faupel 1 , Oral Cenk Aktas 1
Affiliation  

Hierarchical gold (Au) structures with sharp edges garner a strong interest for nanoelectronics, nanoenergy harvesting devices, and nano‐biomedical applications due the exceptional strong electric field (hot spot) enhancement at their tips. Herein, a facile method to synthesize hierarchical Au needle clusters (HAuNCs) on highly active titanium oxide (TiO2) thin film is reported. Different from surfactant‐directed photochemical‐assisted synthesis methods, a photocatalytic deposition approach is demonstrated, which allows positioning and patterning of HAuNCs on TiO2 target without using any surfactant or stabilizer. This green synthesis approach enables to control the size and the geometry of deposited HAuNCs by simply altering the photocatalytic activity of TiO2 target, UV light intensity, and irradiation time.

中文翻译:

高活性TiO2薄膜上光催化生长金针簇的研究

具有尖锐边缘的分层金(Au)结构在纳米电子学,纳米能量采集设备和纳米生物医学应用中引起了浓厚的兴趣,这是由于其尖端的异常强电场(热点)增强作用。在此,报道了一种在高活性氧化钛(TiO 2)薄膜上合成分层金针簇(HAuNCs)的简便方法。与表面活性剂指导的光化学辅助合成方法不同,本文展示了一种光催化沉积方法,该方法无需使用任何表面活性剂或稳定剂就可以在TiO 2靶上定位和构图HAuNCs 。这种绿色合成方法可通过简单地改变TiO 2的光催化活性来控制沉积的HAuNC的尺寸和几何形状 目标,紫外线强度和照射时间。
更新日期:2018-06-26
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