Next Article in Journal
Electrochemical Corrosion Behavior of Ta2N Nanoceramic Coating in Simulated Body Fluid
Next Article in Special Issue
Extensive Characterization of Oxide-Coated Colloidal Gold Nanoparticles Synthesized by Laser Ablation in Liquid
Previous Article in Journal
Flow Chamber System for the Statistical Evaluation of Bacterial Colonization on Materials
Previous Article in Special Issue
Synthesis of Mixed Cu/Ce Oxide Nanoparticles by the Oil-in-Water Microemulsion Reaction Method
Article Menu
Issue 9 (September) cover image

Export Article

Open AccessFeature PaperArticle
Materials 2016, 9(9), 771; doi:10.3390/ma9090771

Enhancement of TiO2 NPs Activity by Fe3O4 Nano-Seeds for Removal of Organic Pollutants in Water

1
Department of Chemistry and Industrial Chemistry, University of Genoa, Genoa 16146, Italy
2
Department of Chemistry, University of Pavia, Pavia 27100, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Andrea P. Reverberi
Received: 28 July 2016 / Revised: 30 August 2016 / Accepted: 5 September 2016 / Published: 10 September 2016
View Full-Text   |   Download PDF [1463 KB, uploaded 10 September 2016]   |  

Abstract

The enhancement of the photocatalytic activity of TiO2 nanoparticles (NPs), synthesized in the presence of a very small amount of magnetite (Fe3O4) nanoparticles, is here presented and discussed. From X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses, the crystallinity of TiO2 nanoparticles (NPs) seems to be affected by Fe3O4, acting as nano-seeds to improve the tetragonal TiO2 anatase structure with respect to the amorphous one. Photocatalytic activity data, i.e., the degradation of methylene blue and the Ofloxacin fluoroquinolone emerging pollutant, give evidence that the increased crystalline structure of the NPs, even if correlated to a reduced surface to mass ratio (with respect to commercial TiO2 NPs), enhances the performance of this type of catalyst. The achievement of a relatively well-defined crystal structure at low temperatures (Tmax = 150 °C), preventing the sintering of the TiO2 NPs and, thus, preserving the high density of active sites, seems to be the keystone to understand the obtained results. View Full-Text
Keywords: titania; photocatalysis; methylene blue; Ofloxacin; fluoroquinolone titania; photocatalysis; methylene blue; Ofloxacin; fluoroquinolone
Figures

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. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Villa, S.; Caratto, V.; Locardi, F.; Alberti, S.; Sturini, M.; Speltini, A.; Maraschi, F.; Canepa, F.; Ferretti, M. Enhancement of TiO2 NPs Activity by Fe3O4 Nano-Seeds for Removal of Organic Pollutants in Water. Materials 2016, 9, 771.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top