期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 29, 页码 16070-16077出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b04568
关键词
titanium oxides; laser; nanospheres; visible light; photocatalytic
资金
- National Basic Research Program of China (973 Program) [2011CB302004]
- National Science Fund for Distinguished Young Scholars [61425021]
- National Natural Science Foundation of China [11134009, 61475153, 11174273, 21101146]
- 100 Talents Program of the Chinese Academy of Sciences
A facile pulse laser ablation approach for preparing black titanium oxide nanospheres, which could be Used as photocatalysts under visible light, is proposed. The black titanium oxide nanospheres are prepared by pulsed-laser irradiation of pure titanium oxide in suspended aqueous solution. The crystalline phases, morphology, and optical properties. of the obtained nanospheres are characterized by means of X-ray diffraction (XRD), field-emission scanning, electron microscopy (SEM), transmission electron microscopy (TM), selected area electron diffraction (SAED), X-ray photoelectron spectroscopy (XPS), and UV-vis-NIR diffuse reflectance spectroscopy. It is shown that high-energy laser ablation of titanium oxide suspended solution benefited the formation of Ti3+ species and surface disorder on the surface of the titanium oxide nanospheres. The laser modified black titanium oxide nanospheres could absorb the full spectrum of visible light, thus exhibiting good photo catalytic performance under visible light.
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