Optical near-field induced visible response photoelectrochemical water splitting on nanorod TiO2
Optical near-field induced visible response photoelectrochemical water splitting on nanorod TiO2
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DOI：
10.1063/1.3663632
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发表时间：
2011-11
影响因子：
4
通讯作者：
T. Le;K. Mawatari;Y. Pihosh;T. Kawazoe;T. Yatsui;M. Ohtsu;M. Tosa;T. Kitamori
中科院分区：
文献类型：
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作者：
T. Le;K. Mawatari;Y. Pihosh;T. Kawazoe;T. Yatsui;M. Ohtsu;M. Tosa;T. Kitamori
本文报道了一种利用纳米棒TiO2上产生的光学近场（ONF）诱导非掺杂TiO2在光催化电化学水分解中产生可见光响应的方法。可见光响应归因于onf诱导的声子辅助激发过程，其中TiO2被子带隙光子通过声子能量激发。我们的方法直接参与激发过程，不需要对材料进行化学修饰；因此，它在光催化性能上几乎没有缺点。该研究可能为太阳能收集材料的发展提供另一种视角。
Here we report a way to induce the visible response of non-doped TiO2 in the photocatalytic electrochemical water splitting, which is achieved by utilizing the optical near-field (ONF) generated on nanorod TiO2. The visible response is attributed to the ONF-induced phonon-assisted excitation process, in which TiO2 is excited by sub-bandgap photons via phonon energy. Our approach directly gets involved in the excitation process without chemical modification of materials; accordingly it is expected to have few drawbacks on the photocatalytic performance. This study may offer another perspective on the development of solar harvesting materials.