Next Article in Journal
Acknowledgement to Reviewers of Inventions in 2016
Next Article in Special Issue
Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications
Previous Article in Journal
The Performance Analysis of Smartphone-Based Pedestrian Dead Reckoning and Wireless Locating Technology for Indoor Navigation Application
Article Menu

Export Article

Open AccessArticle
Inventions 2016, 1(4), 26; doi:10.3390/inventions1040026

Linking the Physicochemical Properties of Calcined Titania Nanoparticles with Their Biocidal Activity

1
Department of Biomedical, Chemical and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221-0012, USA
2
National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
3
Department of Civil Engineering, The University of Texas at Arlington, Arlington, TX 76019-0308, USA
4
National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
*
Authors to whom correspondence should be addressed.
Academic Editor: Mady Elbahri
Received: 27 October 2016 / Revised: 9 December 2016 / Accepted: 13 December 2016 / Published: 20 December 2016
(This article belongs to the Special Issue Nanomaterials and Nanocomposites for Environmental Applications)
View Full-Text   |   Download PDF [2499 KB, uploaded 20 December 2016]   |  

Abstract

Titanium dioxide nanoparticles (nTiO2) show biocidal activity when exposed to UV illumination. Modification of their physical properties can expand their photoresponse region toward visible light. In this study, such modification was made through a sol-gel synthesis followed by calcination at a range of temperatures (250–900 °C), generating a series of nTiO2 particles with different crystal phases, sizes, porosities, zeta potentials, and BET surface areas. The unique properties of nTiO2 were linked to their toxicity to the marine bacterium, Vibrio fischeri. A modified “Flash” high-through put assay was used to test the viability of these marine organisms after short term (15–60 min) exposure under visible light only to the individual groups of nTiO2 (500–2000 μg/mL). Linear regression analysis indicated that across all concentrations and time points, high biocidal activity correlated with the amorphous and anatase crystal phases, high BET surface area, high pore volume and small crystal size. The linkage between physicochemistry and nanotoxicity would be helpful for future design of more efficient and sustainable nTiO2. View Full-Text
Keywords: nanotoxicity; sustainability; TiO2 nanoparticles; titania; physicochemical; ecotoxicity; Vibrio fischeri; “Flash” assay nanotoxicity; sustainability; TiO2 nanoparticles; titania; physicochemical; ecotoxicity; Vibrio fischeri; “Flash” assay
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).

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

Han, C.; Pelaez, M.; Betancourt, D.; Choi, H.; Dionysiou, D.D.; Veronesi, B. Linking the Physicochemical Properties of Calcined Titania Nanoparticles with Their Biocidal Activity. Inventions 2016, 1, 26.

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.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Inventions EISSN 2411-5134 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top