Work

Influence of Dispersant and Surfactant on nZVI Characterization by Dynamic Light Scattering

Year: 2025

Type: conference-paper

Abstract: The agrifood industries generate tremendous amounts of waste, with the valorization of these wastes being of the utmost importance. The aim of this work was to synthesize green zero-valent iron nanoparticles (nZVI) using hydromethanolic extracts of spent coffee grounds (SCGs) and post-distillation residues of Cistus ladanifer L. leaves (CLL). The synthesized nZVI were then analyzed by dynamic light scattering (DLS), and their size, polydispersity index (PDI), and zeta potential (ZP) were determined. Different dispersants (water and methanol) and the impact of a surfactant (Tween® 20) were tested for DLS analysis. nZVI dispersed in water and added with Tween® 20 displayed lower agglomeration, particle size, and PDI, but higher ZP than nZVI without the addition of surfactant and methanolic suspension. These results provide further insight into the applicability of surfactants in nZVI characterization.

DOI: 10.3390/engproc2025087033

Authors: Filipe Fernandes, Ana Isabel Oliveira, Cristina Delerue-Matos, Clara Grosso

Institutions: Universidade do Porto, Rede de Química e Tecnologia, Instituto Superior de Engenharia do Porto, Universidade Técnica do Porto

Language: English

Topic: Environmental remediation with nanomaterials

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Zero hunger

Open Access status: gold

Funders: Ministério da Ciência, Tecnologia e Ensino Superior, Fundação para a Ciência e a Tecnologia