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Increase of Fluorescence of Humic-Like Substances in Interaction with Cd(II): a Photoinduced Charge Transfer Approach

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Author(s):
Santos, Vinicius S. ; Moura, Bernardo R. ; Metzker, Gustavo ; Cornelio, Marinonio L. ; Ferreira, Odair P. ; Mounier, Stephane J. L. ; Hajjoul, Houssam ; Boscolo, Mauricio ; Bisinoti, Marcia C. ; Moreira, Altair B.
Total Authors: 10
Document type: Journal article
Source: Journal of Fluorescence; v. N/A, p. 7-pg., 2022-06-09.
Abstract

Described is the enhancement of fluorescence intensity due to the interaction of a humic-like substance ( HLS 1%) extracted from process water (PW) and Cd(II) ions in aqueous solution. Using Canonical Polyadic/Parallel Factor Analysis (CP/PARAFAC), two main components were seen that contributed to fluorescence, the first one increased it and the second one kept it constant in both static and dynamic fluorescence studies. Two-dimensional FTIR analysis indicated that the interaction of HLS 1% and Cd(II) ions occurred in the following order of affinity with the groups: C-O bonds in polysaccharides > C-O bonds in carboxylic acid. The results obtained suggest that the increase in fluorescence intensity and lifetime suggest a photoinduced charge transfer (PCT) between Cd(II) ions and carboxylic acid groups present in HLS 1%. (AU)

FAPESP's process: 18/05673-7 - Interactions of nutrients with humic material extracted from process water of sugarcane bagasse with vinasse hydrothermal carbonization
Grantee:Vinicius Sarracini Santos
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 21/09126-3 - Activation of carbon magnetic nanocomposites for adsorption of inorganic and organic compounds
Grantee:Márcia Cristina Bisinoti
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
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Support Opportunities: Regular Research Grants
FAPESP's process: 14/22400-3 - Evaluation of the potential reuse of the Bittern and hidrochar obtained from hydrothermal carbonization of vinasse and sugar bagasse with a view to agricultural application
Grantee:Altair Benedito Moreira
Support Opportunities: Regular Research Grants
FAPESP's process: 19/18831-2 - Humic-like substances from process water: complexation capacity and characterization using molecular fluorescence
Grantee:Vinicius Sarracini Santos
Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
FAPESP's process: 18/15733-7 - Evaluation of the use of hydrochar for agricultural purposes and of magnetic coal as adsorbent material
Grantee:Márcia Cristina Bisinoti
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 17/26718-6 - Humic Substances of Hydrochar and soils Amazon Dark Earth: Interactions with Macro and Micronutrients
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Support Opportunities: Regular Research Grants
FAPESP's process: 19/17918-7 - Study of the interactions of copper (II) with humic-like substances extracted from hydrochar from sugarcane bagasse and vinasse
Grantee:Bernardo Ribeiro de Moura
Support Opportunities: Scholarships in Brazil - Scientific Initiation