Deposition of Au−Nanocrystals on TiO2Crystallites
Deposition of Au−Nanocrystals on TiO2Crystallites
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DOI：
10.1021/nl010088u
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发表时间：
2002-04
期刊：
影响因子：
10.8
通讯作者：
T. G. Schaaff;D. Blom
中科院分区：
文献类型：
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作者：
T. G. Schaaff;D. Blom
在特定的溶液条件下，2纳米（直径）钝化金纳米化合物显示出优先吸附在相邻的二氧化钛微晶之间的边界。这种优先吸附的程度取决于甲苯溶液中的金纳米晶体的浓度。在高溶液浓度（>0.1 mg/mL）下，纳米晶体沿着TiO 2微晶边界排列，但也非优先地在TiO 2微晶面上存款。低于0.1 mg/mL时，Au-Pd化合物的吸附几乎完全发生在相邻TiO 2微晶之间的晶界处。
Under specific solution conditions, 2 nm (diameter) passivated gold nanocrystal compounds show preferential adsorption at boundaries between adjacent TiO2 crystallites. The extent of this preferential adsorption is dependent upon the concentration of the gold nanocrystals in toluene solutions. At high solution concentrations (>0.1 mg/mL), the nanocrystals align along the TiO2 crystallite boundaries, but also deposit nonpreferentially across the TiO2 crystallite faces. Below 0.1 mg/mL, the adsorption of the Au-nanocrystal compounds occurs nearly exclusively at the grain boundaries between adjacent TiO2 crystallites.