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<p>Sodium silicate (Na<sub>2</sub>SiO<sub>3</sub>) and acetic acid (CH<sub>3</sub>COOH) were used as catalysts in a one-phase, practical, economical, and rapid sol–gel process to produce silica (SiO<sub>2</sub>) nanocrystals. The influence of the irradiation temperature using a microwave oven and the characteristics of the synthesized SiO<sub>2</sub> nanocrystals were examined to know its parameters and boundaries. The motivating factor for the investigation is to obtain a SiO<sub>2</sub> in crystalline nature which is nanoscale dimension. X-ray Diffraction (XRD), Fourier Transmission InfraRed (FTIR), UV–Visible spectroscopy, Scanning Electron Microscopy- Energy Dispersive Spectrometer (SEM–EDX), and ThermoGravimetric Analysis—Differential Scanning Calorimetry (TG-DSC) were used in the characterization technique, and its potential for performing as antibiotic enhancers are also examined and explored. Furthermore, the photocatalytic activities of the synthesized nanocrystal was investigated as photocatalyst against methylene blue (MB) dye under UV irradiation.</p>

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Fabrication of silica (SiO2) nanocrystals using sol–gel method with enhanced antimicrobial and photocatalytic activity

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • S. Venkateshwari,
  • S. Sandhiya,
  • R. Mithra

摘要

Sodium silicate (Na2SiO3) and acetic acid (CH3COOH) were used as catalysts in a one-phase, practical, economical, and rapid sol–gel process to produce silica (SiO2) nanocrystals. The influence of the irradiation temperature using a microwave oven and the characteristics of the synthesized SiO2 nanocrystals were examined to know its parameters and boundaries. The motivating factor for the investigation is to obtain a SiO2 in crystalline nature which is nanoscale dimension. X-ray Diffraction (XRD), Fourier Transmission InfraRed (FTIR), UV–Visible spectroscopy, Scanning Electron Microscopy- Energy Dispersive Spectrometer (SEM–EDX), and ThermoGravimetric Analysis—Differential Scanning Calorimetry (TG-DSC) were used in the characterization technique, and its potential for performing as antibiotic enhancers are also examined and explored. Furthermore, the photocatalytic activities of the synthesized nanocrystal was investigated as photocatalyst against methylene blue (MB) dye under UV irradiation.