Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-06-03T15:38:17.261Z Has data issue: false hasContentIssue false
  • English
  • Français

Using New Porous Nanocomposites for Photocatalytic Water Decontamination

Published online by Cambridge University Press:  01 February 2011

Maryam Zarei Chaleshtori ,
S. M. Sarif Masud  and
Geoffrey B. Saupe
Maryam Zarei Chaleshtori
Affiliation:
mzarei@miners.utep.edu, UTEP, Environmental Science and Engineering, El Paso, Texas, United States
S. M. Sarif Masud
Affiliation:
sarif@123.com, UTEP, 3Material Science and Engineering, El Paso, Texas, United States
Geoffrey B. Saupe
Affiliation:
geoff@123.com, UTEP, Department of Chemistry, El Paso, Texas, United States
Get access

Abstract

Heterogeneous catalysts that accelerate the photolytic destruction of organic contaminants in water are a potentially inexpensive and highly effective way to remove both trace-level and saturated harmful compounds from industrial waste streams and drinking water. Porous photocatalytic materials can have the combined qualities of high surface area and relatively large particle sizes, as compared with nanoparticulate catalyst powders like titanium dioxide . The larger particle sizes of the porous materials facilitate catalyst removal from a solution, after purification has taken place.

We have synthesized new kinds of photocatalytic porous oxide materials that can be used to purify contaminated water by accelerating the photodegradation of any kind of organic pollutant. The new materials have very large open pore structures that facilitate the diffusion, the surface contact of contaminants, and solvent flow through the catalyst. These qualities enhance surface reactions important to the process. The new catalysts have shown robust physical and chemical properties that make them candidates for real applications in polluted water decontamination.

Keywords

colloidpurificationcatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1145: Symposium MM – Application of Group IV Semiconductor Nanostructures , 2008 , 1145-MM04-36
Copyright
Copyright © Materials Research Society 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Saupe, G.B., Zhao, Y., Bang, J., Yesu, N.R., Carballo, G.A.,, Ordonez, R., Bubphamala, T., “Evaluation of a new porous titanium-niobium mixed oxide for photocatalytic water decontamination,” Microchemical Journal, 81, pp. 156–162 (2005).Google Scholar
2. Edwards, J.C., “Investigations of color removal by chemical oxidation for three reactive dyes and spent textile dye wastewater” MSc. Thesis. Virginia Polytechnic Institute and state University, Blacksburg, Virginia, 56, (2000).Google Scholar
3. Lin, S. H., Chen, M. L., “Treatment of textile wastewater by chemical methods for reuse,” Water Resources, Vol. 31, 869–876 (1997).Google Scholar
4. Robinson, T.,, McMullan, G.,, Marchant, R.,, Nigam, P., “Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative,” Bioresource Technology, 77, 247–255 (2001).Google Scholar
5. Mattioli, D., Malpei, F., Bortone, G., Rozzi, A., “Water minimization and reuse in the textile industry: In Water recycling and resource recovery in industry,” Editors Lens, P., Hulshoff Pol, L., Wilderer, P., Asano T.-IWA Publishing (2002).Google Scholar
6. Fang, M., Kim, C. H.,, Mallouk, T. E., “Dielectric properties of the lamellar niobates and titanoniobates AM2Nb3O10 and ATiNbO5 (A=H, K, M=Ca, Pb), and their condensation products Ca4Nb6O19 and Ti2Nb2O9 ,” Chem. Mater. 11, 1519 (1999).Google Scholar
7. Fang, M., Kim, C. H, Saupe, G. B., Kim, H. N., Waraksa, C. C., Miwa, T., Fujishima, A., Mallouk, T. E., “Layer-by-layer growth and condensation reactions of niobate and titanoniobate thin films,” Chem. Mater. 11, 1520 (1999).Google Scholar
8. Wadsley, A. D., “Alkali titanoniobates: the crystal structures of KTiNbO5 and KTi3NbO9,” Acta Cryst. 17 (6), 623 (1964).Google Scholar