期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 10, 页码 6490-6494出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp212303q
关键词
-
资金
- National Basic Research Program of China [2011CB935704, 2010CB934700]
- National Natural Science Foundation of China [11079002, 50725208, 20973019]
- Tsinghua University
- Innovation Foundation of BUAA for PhD Graduates (BUAA = Beijing University of Aeronautics and Astronautics)
- China Ministry of Education
The enhanced near-field amplitude of localized surface plasmon resonance in the proximity of metal nanoparticles can boost the photocatalytic activity of the neighboring semiconductor, which has been proven and has attracted wide interest recently. Since the plasmon resonance energy strongly depends on the metal particle size and shape, interparticle spacing, and dielectric property of the surrounding medium, it is available to improve the photocatalytic activity of the neighboring semiconductor by designing and synthesizing targeted metal nanoparticles or assembled nanostructures. In this paper, we propose a Au/TiO2/Au nanostructure with the thickness of the middle layer TiO2 nanosheets around 5 nm, which satisfies the distance needed for the coupling effect between the opposite and nearly touching Au nanoparticles, and thus, it can be used as a plasmonic coupling photocatalyst. Compared with the bare TiO2 nanosheet films, the photocurrent density of this favorable nanostructure exhibited a significant improvement in the visible region. The three-dimensional finite-difference time domain was used to quantitatively account for the electromagnetic enhancement of this Au/TiO2/Au heterostructure and substantiated the plasmonic enchancement photocatalytic mechanism further.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据