A novel study on enhancing ascorbic acid colorimetric detection: Green synthesis-driven crystallinity, stability, and catalytic performance of iron oxide nanoparticles in Mo(VI)/FeNPs-based biosensors.

The goal of this study is to investigate how the green synthesis influences the crystallinity, stability, and catalytic performance of green-synthesized iron oxide nanoparticles (FeNPs) in Mo(VI)/FeNPs-based biosensors for ascorbic acid (AA) colorimetric detection. By examining the correlation between total antioxydant capacity (TAC) and FeNPs' structural properties, phase composition, and defect levels, the study aims to establish how plant-mediated synthesis drives FeNPs' catalytic efficiency, ultimately enhancing biosensor sensitivity and lowering detection limits (LOD and LOQ). Statistical analyses, including ANOVA and Pearson correlation, are applied to validate the relationship between TAC and FeNPs' characteristics, reinforcing the role of green synthesis in enhancing biosensor performance.

Correction: A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity.

[This corrects the article DOI: 10.1039/D2NA00302C.].

A novel study on the preferential attachment of chromophore and auxochrome groups in azo dye adsorption on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity.

In this paper, the adsorption of Evans blue (EB) and methyl orange (MO) azo dyes on four greenly synthesized magnetite nanoparticles has been studied to investigate the effect of the mediating plant extract's acidity on magnetite surface reactivity in azo dye adsorption. Magnetite surface reactivity has been studied through the analysis of preferential attachment of dye chromophore and auxochrome groups on magnetite nanoparticles, and adsorption yields. According to the contents of chromophore and auxochrome groups in dye structures, the mediating plant extract's acidity effect on acid site types and densities was also deduced.

Preferential and enhanced adsorption of methyl green on different greenly synthesized magnetite nanoparticles: investigation of the influence of the mediating plant extract's acidity.

Four magnetite nanoparticle (NP) samples have been greenly synthesized using four aqueous plant extracts, which are (L), (L), (L), and (L). The pH of these extracts are acidic (5.25, 5.