Anchoring Semiconductor and Metal Nanoparticles on a Two-Dimensional Catalyst Mat. Storing and Shuttling Electrons with Reduced Graphene Oxide
Anchoring Semiconductor and Metal Nanoparticles on a Two-Dimensional Catalyst Mat. Storing and Shuttling Electrons with Reduced Graphene Oxide
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DOI：
10.1021/nl9035109
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发表时间：
2010-02-01
期刊：
影响因子：
10.8
通讯作者：
Kamat, Prashant V.
中科院分区：
文献类型：
--
作者：
Lightcap, Ian V.;Kosel, Thomas H.;Kamat, Prashant V.
使用还原氧化石墨烯（RGO）作为二维支撑，我们已经成功地在不同的网站选择性锚定半导体和金属纳米粒子。来自UV照射的TiO 2的光生电子穿过RGO传输，以在不同于TiO 2锚定位点的位置处将银离子还原成银纳米颗粒。RGO存储和穿梭电子的能力，如通过逐步电子转移过程可视化的，证明了其作为催化剂纳米垫和按需将电子转移到吸附物质的能力。这些发现为下一代催化剂系统的开发铺平了道路，并可以刺激石墨烯基复合材料用于化学和生物传感器的进步。
Using reduced graphene oxide (RGO) as a two-dimensional support, we have succeeded in selective anchoring of semiconductor and metal nanoparticles at separate sites. Photogenerated electrons from UV-irradiated TiO2 are transported across RGO to reduce silver ions into silver nanoparticles at a location distinct from the TiO2 anchored site. The ability of RGO to store and shuttle electrons, as visualized via a stepwise electron transfer process, demonstrates its capability to serve as a catalyst nanomat and transfer electrons on demand to adsorbed species. These findings pave the way for the development of next generation catalyst systems and can spur advancements in graphene-based composites for chemical and biological sensors.