Synthesis, Characterization and Adsorptive Properties of Activated Carbon/KFeP2O7 Composite
DOI:
https://doi.org/10.29356/jmcs.v66i3.1687Keywords:
Activated carbon, potassium-iron diphosphate, composite, adsorptive propertiesAbstract
Abstract. This work deals with the synthesis of nanoparticles of iron-potassium diphosphate, KFeP2O7, implanted on activated carbon produced from corncob debris. The chemical composition and structure of activated carbon/potassium-iron diphosphate (AC/KFP) composite was analyzed by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). Complementary tests were conducted to determine surface characteristics such as surface area and point of zero charge (pHpzc). Further, the acid-base titration enabled to determine the surface sites density of AC/KFP composite. Adsorptive properties of AC/KFP composite vis à vis U(VI) was then tested using the batch method.
Resumen. Este trabajo presenta la síntesis de nanopartículas de difosfato de potasio-hierro, KFeP2O7, implantadas sobre carbón activado preparado a partir de restos de olote de maíz. La composición química y la estructura del compósito de carbono activado/difosfato de potasio-hierro (AC/KFP) se analizó mediante Difracción de Rayos X, Microscopía Electrónica de Barrido y Microscopía Electrónica de Transmisión. Se realizaron pruebas complementarias para determinar las características de la superficie, como el área de la superficie y el punto de carga cero (pHpzc). Además, la valoración ácido-base permitió determinar la densidad de sitios de superficie del compósito AC/KFP. Adicionalmente, las propiedades adsortivas del compósito AC/KFP frente a U (VI) fueron evaluadas utilizando el método de lotes.
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