METHOD FOR REMOVING ALDEHYDE AND VOLATILE ORGANIC COMPOUNDS USING METAL IONS OR NANO PARTICLES IMMOBILIZED ON CERAMIC PARTICLES

摘要

PURPOSE: To selectively adsorb hazardous compounds such as formaldehyde and volatile organic compounds (VOCs) found in indoor air, by immobilizing metal ions or nano particles, which establishes strong bonding with compounds including carbonyl group (C=O), ether group (-O-) and double or triple bonding, on ceramic particles, thereby relieving sick house syndrome due to indoor air pollution. CONSTITUTION: A 3-mercaptopropyl trimethoxysilane is added in an aqueous alkali solution in which silica particles are dispersed to chemically bond -SH group onto silica particles. In this solution, an aqueous metal salt solution is added to physically bond metal ions with sulfur atom, thereby immobilizing metal ions on the silica particles.