Microwave-assisted synthesis of TiO2 nanoparticles: photocatalytic activity of powders and thin films
Source abstract
Abstract
A simple, rapid, and effective synthesis methodology for the preparation of high-performance TiO2 nanoparticles and thin films by combining colloidal sol-gel and microwave-assisted hydrothermal synthesis was developed. The obtained results indicate that the heating with microwaves at 180 °C for 20 min was enough to synthesize crystalline TiO2 nanoparticles, presenting anatase as a major phase with a crystal size of ~ 7 nm and a specific surface area of 220 m2 g−1. A secondary thermal treatment improved the crystallinity and induced the anatase-to-rutile transformation. The highest photocatalytic activity was found for the as-synthesized powder without any additional thermal treatment. Thin films were also prepared by dip-coating and its high photocatalytic activity showed a kinetic curve comparable to that of a thin film of commercial TiO2 powder prepared under similar conditions.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (40)
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