Author:
Pinatti Ivo M.,Gouveia Amanda F.,Doñate-Buendía C.,Mínguez-Vega Gladys,Andrés Juan,Longo Elson
Abstract
AbstractControlling the structural organization and crystallinity of functional oxides is key to enhancing their performance in technological applications. In this work, we report a strong enhancement of the structural organization and crystallinity of Bi2WO6 samples synthetized by a microwave-assisted hydrothermal method after exposing them to femtosecond laser irradiation. X-ray diffraction, UV-vis and Raman spectroscopies, photoluminescence emissions, energy dispersive spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy were employed to characterize the as-synthetized samples. To complement and rationalize the experimental results, first-principles calculations were employed to study the effects of femtosecond laser irradiation. Structural and electronic effects induced by femtosecond laser irradiation enhance the long-range crystallinity while decreasing the free carrier density, as it takes place in the amorphous and liquid states. These effects can be considered a clear cut case of surface-enhanced Raman scattering.
Funder
Fundação de Amparo ã Pesquisa do Estado de São Paulo
Publisher
Springer Science and Business Media LLC
Reference126 articles.
1. Bordun, O. M. & Stets’kiv, A. T. Luminescence of thin films of lead and bismuth tungstates. J. Appl. Spectrosc. 68, 882–885 (2001).
2. Bordun, O. M. Luminescence centers in thin films of Lead and Bismuth Tungstates. J. Appl. Spectrosc. 65, 149–151 (1998).
3. Zhang, N., Ciriminna, R., Pagliaro, M. & Xu, Y. J. Nanochemistry-derived Bi2WO6 nanostructures: Towards production of sustainable chemicals and fuels induced by visible light. Chem. Soc. Rev. 43, 5276–5287 (2014).
4. Zhang, L., Wang, H., Chen, Z., Wong, P. K. & Liu, J. Bi2WO6 micro/nano-structures: Synthesis, modifications and visible-light-driven photocatalytic applications. Appl. Catal. B Environ. 106, 1–13 (2011).
5. Zhang, L. & Zhu, Y. A review of controllable synthesis and enhancement of performances of bismuth tungstate visible-light-driven photocatalysts. Catal. Sci. Technol. 2, 694–706 (2012).
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献