03679nas a2200469 a 4500 20260817162215.0 230210s2021 th a ||| 000 eng d .b12399334 AIT Thesis no.ISE-21-15 Afrin, Nahid Sajia Amine-functionalized mesoporous silica coated ceramics for formaldehyde adsorption Pathum Thani : Asian Institute of Technology, 2021 79 leaves : ill. Thesis ; no. ISE-21-15 Thesis (M. Sc.) - Asian Institute of Technology, 2021 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Nanotechnology Formaldehyde is one of the highly toxic indoor air pollutants emitted from the building materials, furniture coating and food preservatives, and its removal is therefore important to ensure a safe environment for us. The current study is focused on the synthesis of amine functionalized mesoporous silica coated ceramic sorbent materials to adsorb formaldehyde. The amine functionalized mesoporous silica nanoparticles was synthesized by so-gel technique from tetraethyl orthosilicate (TEOS) as silica precursor and cetyltrimethylammonium bromide (CTAB) as template. The composition of the precursor solution was modified by varying the molar ration of H2O/TEOS and TEOS/APTES. The ceramic substrate was prepared in light casting process from micro sized alumina particles and coated with the amine functionalized silica nanoparticles in dip coating technique. Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersion X-ray Spectroscopy (EDX), Fourier transform infrared (FT-IR) spectroscopy, and N2 adsorption{u2013}desorption isotherms were used to characterize the amine functionalized mesoporous silica nanoparticles, ceramic substrate, and the functionalized mesoporous silica coated ceramic sorbent. The adsorption efficiency of the fabricated sorbent materials was evaluated by desiccator method and the equilibrium characteristics were evaluated by using Langmuir adsorption isotherm. The sample synthesized with H2O/TEOS = 45.5 and TEOS/APTES = 80/20 showed highest adsorption capacity because of its specific surface area, pore diameter and amine groups. Formaldehyde Toxicology Protective coatings Materials Nanoparticles Ceramic coating Bora, Tanujjal, Chairperson Supamas Danwittayakul, Co-Chairperson Ekbordin Winijkul, Examination committee Bhawat Traipattanakul, Examination committee His Majesty the King's Scholarships (Thailand) Scholarship Donor Asian Institute of Technology. Thesis ; no. ISE-21-15 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B18257 .b12399334 mnait m 250411 0 230210 m a m 0 mnait mnarc mnarc 40 67 20 Barcode : 30050121041916 CREATED : 2023-10-02 RECORD # : i13431596 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : - CREATED : 2023-10-02 RECORD # : i13431602 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121076516 CREATED : 2023-10-02 RECORD # : i1343195x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 2 TOT CHKOUT : 0 TOT RENEW : 0 4293 4293 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.ISE-21-15 30050121041916 2026-08-17 16:22:15 1 2026-08-17 40 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.ISE-21-15 2026-08-17 16:22:15 2026-08-17 67 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.ISE-21-15 30050121076516 2026-08-17 16:22:15 1 2026-08-17 20