Synthesis of TiO2/carbon aerogel composite and its photocatalytic degradation of gaseous formaldehyde
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https://doi.org/10.54939/1859-1043.j.mst.92.2023.63-70Keywords:
Photocatalyst; TiO2/Carbon aerogel; Formaldehyde treatment.Abstract
In this study, TiO2 was modified with carbon aerogel (CA) derived from organic polymer to form a photocatalyst material to remove formaldehyde vapor in the air. TiO2/CA samples were synthesized under different calcination temperatures and different TiO2 and CA ratios by sol-gel method. Modern methods like scanning electron microscopy(SEM), Energy Dispersive X-Ray Analysis (EDS), Powder X-ray diffraction (XRD), N2 adsorption-desorption isotherm were used to analyze surface morphology, crystal structure, and surface area characteristics. The results indicate that TiO2 with CA modification enhances surface area and minimizes clumping in synthesis. The formaldehyde vapor treatment test was performed with 0.1g of the catalyst dispersed on the surface with dimensions of 5 ×20 cm under UV lamp (365 nm, 36 Watts), gas flow 1.5 l/min. The highest efficiency of the TiO2/CA sample was about 61% compared with 49% of the pure TiO2 sample.
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