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035 _a.b12399334
099 9 _aAIT Thesis no.ISE-21-15
100 1 _aAfrin, Nahid Sajia
245 1 0 _aAmine-functionalized mesoporous silica coated ceramics for formaldehyde adsorption
260 _aPathum Thani :
_bAsian Institute of Technology,
_c2021
300 _a79 leaves :
_bill.
490 1 _aThesis ;
_vno. ISE-21-15
502 _aThesis (M. Sc.) - Asian Institute of Technology, 2021
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Nanotechnology
520 _aFormaldehyde 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.
650 0 _aFormaldehyde
_xToxicology
650 0 _aProtective coatings
_xMaterials
650 0 _aNanoparticles
650 0 _aCeramic coating
700 1 _aBora, Tanujjal,
_eChairperson
700 0 _aSupamas Danwittayakul,
_eCo-Chairperson
700 0 _aEkbordin Winijkul,
_eExamination committee
700 0 _aBhawat Traipattanakul,
_eExamination committee
710 2 _aHis Majesty the King's Scholarships (Thailand)
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. ISE-21-15
856 4 0 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B18257
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