Tunable Plasmon Resonance and Enhanced Photocatalytic Activity of Au –CdS Core–Shell Nanodogbones
Tunable Plasmon Resonance and Enhanced Photocatalytic Activity of Au –CdS Core–Shell Nanodogbones
复制标题
Au-CdS 核-壳纳米狗骨的可调谐等离子共振和增强光催化活性
DOI：
10.1007/s11468-017-0498-0
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发表时间：
2017
期刊：
影响因子：
3
通讯作者：
Xionggui Tang
中科院分区：
文献类型：
--
作者：
Shan Liang;Jian-Bo Li（李建波）;Min Li;Xionggui Tang
采用一锅法制备了壳层厚度可控的Au-CdS核壳纳米狗骨。用紫外-可见光谱和时域有限差分法研究了它们的可调谐光学性质。随着CdS壳层厚度的增加，表面等离子体共振峰红移增强，同时在可见光区逐渐出现一个新的T-SPR峰，两个T-SPR峰相互重叠，拓宽了太阳光谱中相应组分的吸收带。此外，Au-CdS NDBs在罗丹明B的光催化降解实验中表现出良好的光催化性能，且其光催化活性随CdS壳层厚度的增加而增强。我们相信，这一发现将在太阳能领域具有巨大的应用潜力。
Au-CdS core-shell nanodogbones with controllable shell thickness were facilely synthesized by one-pot method. Their tunable optical properties have been investigated with UV-Vis spectra and finite-difference time-domain method. With CdS shell thickness increasing, the red-shifted and enhanced SPR peak is observed as expected, while a new T-SPR gradually appeared at the visible region and two T-SPR bands overlap with each other, which broaden absorption band of the corresponding components in the solar spectrum. In addition, Au-CdS NDBs exhibited excellent photocatalytic performance in the photodegradation tests of rhodamine B, and their photocatalystic activities enhanced with CdS shell thicknesses increasing. We believe that the finding will have great potential applications in the solar energy fields.