Carbon nanostructures in enhancing ranitidine drug degradation by zinc hexacyanoferrate

Author(s)

Nossol, Arlene B. S. ; Souto, Deborah E. M. ; Silva, Murillo N. T. ; Catto, Ariadne C. ; Longo, Elson ; V. Gelamo, Rogerio ; Nossol, Edson ; Batista, Alex D.

• Document type: Journal article
• Source: SURFACES AND INTERFACES; v. 38, p. 12-pg., 2023-03-16.

Abstract

Here we describe the synthesis and characterization of zinc hexacyanoferrate (ZnHCF) and their respective composites, zinc hexacyanoferrate/graphene oxide (ZnHCF/GO) and zinc hexacyanoferrate/carbon nanotubes (ZnHCF/CNT) aiming the application of these materials as photocatalysts in the degradation of ranitidine. The results showed that all samples have the same rhombohedral crystal structure indexed to the Zn-3(II)[Fe-III(CN)(6)](2) formula, containing ZnHCF microparticles of similar to 2.0 mu m, which decrease in size in the presence of carbon nanomaterials. The pH value and mass of the catalysts during the degradation of the ranitidine were evaluated using a triplicate central point factorial design 22. The best experimental condition obtained for pure ZnHCF led to a degradation of 73% of ranitidine, applying 5.0 mg and pH= 6.0. However, for ZnHCF/GO and ZnHCF/CNT nanocomposites results superior than 90% of degradation for the drug was achivied. The excellent degradation results may originate from the high surface area presented by ZnHCF (896 m(2) g(-1)) and the respective ZnHCF/GO (692 m(2) g(-1)) and ZnHCF/CNT (473 m(2) g(-1)) nanocomposites, high adsorption capacity of the carbon materials and also to an increase of the electronic transfer rate, with consequent enhancing of the redox process and higher efficiency in the electron/hole pair separation. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC