Functionalization of a clay mineral with Sn species for anti-inflammatory removal
Source abstract
Abstract
Diclofenac is one of the most detected drugs in aquatic environments, however, it can be removed through adsorption. In the present study, sodium bentonite (Na-Bent) was functionalized with an Sn species by reaction between the clay and aqueous SnCl solutions (0.01, 0.05 and 0.10 mol L), and used as new adsorbents for diclofenac. X-ray diffraction patterns with Rietveld refinement analysis indicated the presence of hydrated SnO or Sn(OH) nanoparticles in the samples. SnO content in the samples were 12.8, 32.4, and 45.0 % for Sn0.01-, Sn0.05- and Sn0.10-Bent, respectively. The specific surface area of the samples increased, reaching 194 m g for Sn0.1-Bent. X-ray photoelectron spectroscopy (XPS) suggested the presence of Sn(IV) species in Sn-Bent. The adsorption isotherms indicated high drug adsorption, reaching 106.1 and 105.5 mg g for Sn0.05- and Sn0.10-Bent samples, respectively. Fourier transform infrared (FT-IR) spectroscopy and XPS analyses showed an interaction between the carboxylate group of diclofenac sodium and the Sn species in the Sn-Bent samples. Artemia salina tests indicated that Sn0.10-Bent was not toxic, and all samples showed good stability during diclofenac adsorption at pH 6. Therefore, Sn-Bent samples behaved as environmentally friendly adsorbents for the removal of diclofenac.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Adsorption and biosorption for pollutant removal · Clay minerals and soil interactions · Hydrogels: synthesis, properties, applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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