Spectroscopic study of supramolecular systems assembled from zeolite l nanocrystals and their use in water decontamination with sunlight

• Grant number: 12/02955-5
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2012
• End date: June 30, 2014
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Principal Investigator: Rodrigo Queiroz de Albuquerque
• Grantee: Rodrigo Queiroz de Albuquerque
• Host Institution: Instituto de Química de São Carlos (IQSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Host-guest supramolecular systems with Zeolite L can be used in luminescent devices exhibiting several technological applications. In particular, the photoirradiation of organic dyes encapsulated into nanocrystals of Zeolite L can be used to trigger the energy transfer to phthalocyanines functionalized on the outer part of those crystals. Once in the excited state, the phthalocyanine generates the citotoxic singlet oxygen and therefore this hybrid system will be able to photoinactivate pathogens present in, for example, contamined water. The sunlight can be used to excite directly and indirectly the phthalocyanine, resulting in the intensification of the singlet-oxygen generation. The simplicity of this system and the fact that the materials are cheap and the solar energy has zero cost, suggest that it may be used in large scale and it may strongly contribute to maintain the most precious resource of future societies: the potable water. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LEITAO, RENAN C. F.; TRUJILLO, LOREN N.; LEITAO, ANDREI; ALBUQUERQUE, RODRIGO Q.. On the use of porous nanomaterials to photoinactivate E. coli with natural sunlight irradiation. Solar Energy, v. 122, p. 1117-1122, DEC 2015. (12/02955-5, 13/18009-4)

GOMES, JANAINA F.; GARCIA, AMANDA C.; PIRES, CLEITON; FERREIRA, EDUARDO B.; ALBUQUERQUE, RODRIGO Q.; TREMILIOSI-FILHO, GERMANO; GASPAROTTO, LUIZ H. S.. Impact of the AuAg NPs Composition on Their Structure and Properties: A Theoretical and Experimental Investigation. Journal of Physical Chemistry C, v. 118, n. 49, p. 28868-28875, DEC 11 2014. (12/02955-5, 12/10856-7, 14/02071-5, 09/08511-9)

CAPELO, RENATO G.; LEPPERT, LINN; ALBUQUERQUE, RODRIGO Q.. The Concept of Localized Atomic Mobility: Unraveling Properties of Nanoparticles. Journal of Physical Chemistry C, v. 118, n. 37, p. 21647-21654, SEP 18 2014. (12/02955-5, 14/02071-5, 14/01174-5)