Enhanced photocatalytic performance of titanium dioxide-carbon composite coatings embedded with silver nanoparticles
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2024
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BRAZIL MRS MEETING, 22nd
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In the quest for efficient solutions for environmental remediation, titanium dioxide-carbon
(TiO2-C) composite coatings with silver have emerged as promising candidates due to their
nanostructural, morphological, and photocatalytic properties under visible light
irradiation[1]. This study investigates the synthesis, characterization, and photocatalytic
performance of these coatings, produced using the sol-gel technique followed by heat
treatment at 500°C for 30 minutes. The uniform application of the coatings onto a glass
substrate was confirmed through scanning electron microscopy (SEM) analysis, which
demonstrated a homogeneous dispersion of the metal across the expanded graphite
surface.The integration of silver into the coatings, achieved through immersion in a silver
nitrate solution and subsequent exposure to ultraviolet (UV) light, resulted in a significant
enhancement of photocatalytic activity. Photocatalysis curves showed up to 80%
degradation of methyl orange dye under visible light irradiation over a period of six hours,
with substantial degradation observed within the first two hours. This rapid degradation
kinetics underscores the practical potential of these coatings in wastewater treatment and
environmental remediation processes.The characterization techniques employed, including
X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Raman
spectroscopy, provided insights into the crystal structure, chemical composition, and
functional groups present in the coatings. The results indicate the successful incorporation
of silver into the TiO2-C matrix, which may lead to the formation of silver nanoparticles or
silver oxide species, known for their photocatalytic properties.In conclusion, the
comprehensive analysis of the TiO2-C composite coatings embedded with silver suggests
their potential as efficient photocatalysts for environmental remediation applications.
Como referenciar
SANTOS, CAMILA M.G. Enhanced photocatalytic performance of titanium dioxide-carbon composite coatings embedded with silver nanoparticles. In: BRAZIL MRS MEETING, 22nd, September 29 - October 3, 2024, Santos, SP. Abstract... São Carlos, SP: Aptor Software, 2024. p. 1123-1123. Disponível em: https://repositorio.ipen.br/handle/123456789/48949. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.