On the use of porous nanomaterials to photoinactivate E. coli with natural sunlight irradiation

Author(s)

Leitao, Renan C. F. ^[1] ; Trujillo, Loren N. ^[1] ; Leitao, Andrei ^[1] ; Albuquerque, Rodrigo Q. ^[1]

Affiliation

^[1] Univ Sao Paulo, Silo Carlos Inst Chem, BR-13560970 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Solar Energy; v. 122, p. 1117-1122, DEC 2015.
• Web of Science Citations: 1

Abstract

An organic inorganic hybrid material based on nanocrystals of zeolite L functionalized with silicon phthalocyanine can develop interesting properties when activated by natural sunlight. Cell viability tests show that this nanomaterial is able to photoinactivate mouse cells and Escherichia coli (E. coli) bacteria, and is also very efficient against the self-defense mechanisms of E. coli during the first minutes of solar irradiation. The results suggest that Gram-negative E. coli become more resistant to singlet oxygen-based disinfection treatments at higher temperatures. The present work contributes to the development of new functional materials for a range of important sunlightbased applications. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 12/02955-5 - Spectroscopic study of supramolecular systems assembled from zeolite l nanocrystals and their use in water decontamination with sunlight
• Grantee: Rodrigo Queiroz de Albuquerque
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/18009-4 - Molecular design, synthesis and trypanocidal activity of cruzain reversible covalent inhibitors
• Grantee: Carlos Alberto Montanari
• Support Opportunities: Research Projects - Thematic Grants