Work

Diatomite with TiO2 nanoparticles for the photocatalytic degradation of methylene blue

Year: 2025

Type: article

Abstract: Water pollution caused by industrial dyes, such as methylene blue (MB), poses a significant environmental challenge due to its high toxicity and persistence. This study reports the photodegradation of methylene blue using diatomite loaded with titanium dioxide (TiO 2 ) nanoparticles. The samples were characterized using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The photodegradation of methylene blue was measured using ultraviolet–visible spectroscopy. The results indicate that the porous structure of diatomite, combined with the photocatalytic properties of the anatase and rutile phases, enhances the photodegradation process of Methylene blue, achieving an efficiency of 80% in 270 min under natural sunlight. These findings highlight the potential of the diatomite-TiO 2 composite as a low-cost and effective solution for water purification and environmental remediation.

Source: Carbon Trends

DOI: 10.1016/j.cartre.2025.100488

Authors: Ariel Josue Ojeda Coba, Sarah Briceño, Karla Vizuete, Alexis Debut, Gema González

Institutions: Universidad Yachay Tech, Universidad de las Fuerzas Armadas ESPE

Language: English

Topic: TiO2 Photocatalysis and Solar Cells

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,000