Ag/AgBr/graphene oxide nanocomposite synthesized via oil/water and water/oil microemulsions: a comparison of sunlight energized plasmonic photocatalytic activity.
Ag/AgBr/graphene oxide nanocomposite synthesized via oil/water and water/oil microemulsions: a comparison of sunlight energized plasmonic photocatalytic activity.
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DOI：
10.1021/la204452p
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
Mingshan Zhu;Penglei Chen;Minghua Liu
中科院分区：
文献类型：
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作者：
Mingshan Zhu;Penglei Chen;Minghua Liu
在这篇文章中，我们报告，银/AgBr纳米结构和相应的氧化石墨烯（GO）杂化纳米复合材料，银/AgBr/GO，可以方便地合成通过表面活性剂辅助组装协议，其中油/水微乳液作为合成介质。我们表明，由此产生的纳米材料可用作高效和稳定的等离子体光催化剂的光降解的甲基橙子（MO）污染物在阳光照射下。与裸Ag/AgBr纳米物种相比，Ag/AgBr/GO表现出明显增强的光催化活性。更重要的是，所制备的纳米结构表现出更高的光催化活性比相应的Ag/AgBr基纳米材料通过水/油微乳液合成，比相应的Ag/AgCl基纳米物种通过油/水微乳液合成。对这些有趣的发现提出了一种解释。我们的研究结果表明，由此制造的Ag/AgBr/GO等离子体光催化剂是有前途的替代传统的紫外光或可见光驱动的光催化剂。
In this article, we report that Ag/AgBr nanostructures and the corresponding graphene oxide (GO) hybridized nanocomposite, Ag/AgBr/GO, could be facilely synthesized by means of a surfactant-assisted assembly protocol, where an oil/water microemulsion is used as the synthesis medium. We show that thus-produced nanomaterials could be used as highly efficient and stable plasmonic photocatalysts for the photodegradation of methyl orange (MO) pollutant under sunlight irradiation. Compared with the bare Ag/AgBr nanospecies, Ag/AgBr/GO displays distinctly enhanced photocatalytic activity. More importantly, the as-prepared nanostructures exhibit higher photocatalytic activity than that of the corresponding Ag/AgBr-based nanomaterials synthesized viaa water/oil microemulsion and than that of the corresponding Ag/AgCl-based nanospecies synthesized by an oil/water microemulsion. An explanation has been proposed for these interesting findings. Our results suggest that thus-manufactured Ag/AgBr/GO plasmonic photocatalysts are promising alternatives to the traditional UV light or visible-light driven photocatalysts.