6533b821fe1ef96bd127b64a

RESEARCH PRODUCT

Isomerization and redox tuning in ‘Maya yellow’ hybrids from flavonoid dyes plus palygorskite and kaolinite clays

Francisco M. Valle-algarraLaura Osete-cortinaMaría Teresa Doménech-carbóAntonio Doménech-carbóDavid Buti

subject

ChemistryPalygorskiteGeneral ChemistryThermal treatmentCondensed Matter PhysicsElectrochemistryRedoxCatalysisMechanics of MaterialsmedicineOrganic chemistryKaoliniteGeneral Materials ScienceHybrid materialIsomerizationmedicine.drug

description

Abstract The composition of the organic fraction of organic–inorganic hybrid materials prepared upon attachment of different natural, ‘historical’ flavonoid yellow dyes (zacatlaxcalli, fustic, marigold and cosmos) to palygorskite and kaolinite clays is described. Upon thermal treatment between 100 and 180 °C, significant isomerization and oxidation reactions occur thus resulting in the formation of polyfunctional materials potentially usable for therapeutic, catalytic and art purposes. The dye attachment to the clays would define a ‘Maya chemistry’ whose complexity could explain the versatile use of such materials in the pre-Columbian cultures.

yearjournalcountryeditionlanguage
2014-08-01Microporous and Mesoporous Materials
https://doi.org/10.1016/j.micromeso.2014.03.046