高光敏、低带隙的 TiO2 纳米粒子被石墨烯包裹。
Highly photoactive, low bandgap TiO2 nanoparticles wrapped by graphene.
机构信息
Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon, Republic of Korea.
出版信息
Adv Mater. 2012 Feb 21;24(8):1084-8. doi: 10.1002/adma.201104110. Epub 2012 Jan 24.
Highly photoactive, graphene-wrapped anatase TiO(2) nanoparticles are synthesized through one-step hydrothermal reduction of graphene oxide (GO) and TiO(2) crystallization from GO-wrapped amorphous TiO(2) NPs. Graphene-TiO(2) nanoparticles exhibit a red-shift of the band-edge and a significant reduction of the bandgap (2.80 eV). Graphene-TiO(2) nanoparticles possess excellent photocatalytic properties under visible light for the degradation of methylene blue.
通过一步水热还原氧化石墨烯（GO）和 GO 包裹的无定形 TiO2 NPs 的 TiO2 结晶，合成了高光敏性的石墨烯包裹锐钛矿 TiO2 纳米粒子。石墨烯-TiO2 纳米粒子表现出带边缘的红移和带隙的显著减小（2.80 eV）。在可见光下，石墨烯-TiO2 纳米粒子具有优异的光催化性能，可用于降解亚甲基蓝。
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