Fabrication of TiO2@Yeast-Carbon Hybrid Composites with the Raspberry-Like Structure and Their Synergistic Adsorption-Photocatalysis PerformanceReport as inadecuate




Fabrication of TiO2@Yeast-Carbon Hybrid Composites with the Raspberry-Like Structure and Their Synergistic Adsorption-Photocatalysis Performance - Download this document for free, or read online. Document in PDF available to download.

Journal of NanomaterialsVolume 2013 2013, Article ID 851417, 8 pages

Research ArticleEnvironmental Science & Engineering College, Chang’an University, Xi’an 710054, China

Received 17 July 2013; Revised 27 August 2013; Accepted 28 August 2013

Academic Editor: Mengnan Qu

Copyright © 2013 Dang Yu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the present work, we report the preparation and photocatalytic properties of TiO2@yeast-carbon with raspberry-like structure using a pyrolysis method. The products are characterized by field emission scanning electron microscopy FE-SEM, energy dispersive spectrometry EDS, X-ray diffraction XRD, thermal gravimetric and differential thermal analysis TGA-DTA, Fourier transformed infrared spectroscopy FT-IR, and ultraviolet visible spectroscopy UV-VIS, respectively. The results show that the hybrid TiO2@yeast-carbon microspheres have ordered elliptic shapes of uniform size length =   μm; width =   μm. UV-VIS ascertains that the as-prepared microspheres possess an obvious light response in a wide range of 250–400 nm. In the decomposition of typical model pollutants including methylene blue and congo red, the hybrid composites exhibited excellent photocatalytic activity for the methylene blue due to the enhanced adsorption ability. Further investigation reveals that the combined effect of adsorption from the yeast-carbon core and photocatalytic degradation from the attached TiO2 nanoparticles were responsible for the improvement of the photocatalytic activities. Hereby, the raspberry-like TiO2@yeast-carbon has promising applications in water purification.





Author: Dang Yu, Bai Bo, and He Yunhua

Source: https://www.hindawi.com/



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