Synthesis and photocatalytic activity of ZnO-Au25 nanocomposites
Synthesis and photocatalytic activity of ZnO-Au25 nanocomposites
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DOI：
10.1007/s11426-015-5487-6
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发表时间：
2016-03
期刊：
影响因子：
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通讯作者：
Junjie Hu;Hai Yuan;Peng Li;J. Wang;Qiankun Liu;Hui Wang;Qilin Wang;Xiaoyou Yuan
中科院分区：
文献类型：
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作者：
Junjie Hu;Hai Yuan;Peng Li;J. Wang;Qiankun Liu;Hui Wang;Qilin Wang;Xiaoyou Yuan
通过在多孔ZnO纳米球中掺杂Au25纳米团簇，合成了ZnO-Au25纳米复合材料。结果表明，纳米Au25纳米团簇在多孔ZnO载体上具有均匀的粒径和良好的分散性。发现负载Au25纳米团簇与光催化活性之间存在相当大的相关性。与纯ZnO纳米球相比，ZnO- au25纳米复合材料在降解罗丹明B （Rhodamine B, RhB）方面表现出更有效的光催化活性。此外，本文还讨论了可能的光催化机理。该方法对制备其他结构明确、性能优越的新型杂化纳米复合材料具有一定的指导意义。
ZnO-Au25 nanocomposites were synthesized by doping Au25 nanoclusters into the porous ZnO nanospheres. It was notable that the ultrasmall Au25 nanoclusters possessed uniform sizes and fine dispersibility on the porous ZnO supports. A considerable correlation between the loading of Au25 nanoclusters and the photocatalytic activity was found. Compared with the pure ZnO nanospheres, the ZnO-Au25 nanocomposites exhibited more efficient photocatalytic activity in terms of degradation of Rhodamine B (RhB) in an aqueous solution. In addition, the possible photocatalytic mechanisms are discussed in this work. This strategy may be helpful for preparing other novel hybrid nanocomposites with well-defined structures and superior performances.