000			03366nas a2200409 a 4500
005			20260818214551.0
008			230203s2022 th a ||| 000 eng d
035			_a.b12398251
099		9	_aAIT Thesis no.ISE-22-08
100	0		_aSirada Janjaochay
245	1	0	_aSol-gel synthesis of core-shell metal oxide nanoparticles and their application in NIR reflective coatings
260			_aPathum Thani : _bAsian Institute of Technology, _c2022
300			_a83 p. : _bill.
490	1		_aThesis ; _vno. ISE-22-08
502			_aThesis (M. Eng.) - Asian Institute of Technology, 2022
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Nanotechnology
520			_aWith the increasing human population, the number of human-made architectures increases along with the people. The architectures release heat slower than natural infrastructures and destroy the heat cycle leading to the collected heat, especially in the city. This occurrence is called the urban heat island effect. Along with many solutions of city design, green infrastructures, and policies, the near-infrared (NIR) reflective structures are promising solutions to the issue. Coating with NIR reflective pigments, human-made architectures can obtain the cooling effect where the absorbed heat is decreased. TiO2 is one of the most popular materials that provide high NIR reflectance to the pigments. This work reports core-shell nanostructures of metal oxides-TiO2 since the core-shell structures prevent the nanoparticles' agglomeration and enhance the pigments' NIR reflectivity. The possible metal oxides cores are Cr2O3, Al2O3, and Fe2O3 nanoparticles, which are commercially available. In addition, sol-gel synthesis of the NIR reflective pigments is a simple, low-cost, and environmentally friendly approach. The possible factors that affect the NIR reflectance of the nanoparticles are investigated, such as the thickness of the TiO2 shell, nanoparticle sizes, and fabrication conditions. The synthesized nanoparticles are then be analyzed with characterization tools, such as transmission electron microscopy, UV-vis-NIR spectrophotometer, etc., to study the properties and the cooling effect obtained from the coating of these pigments.
650		0	_aNear infrared reflectance spectroscopy
650		0	_aNanoparticles
700	1		_aBora, Tanujjal, _eChairperson
700	0		_aSitthisuntorn Supothina, _eCo-Chairperson
700	1		_aRicco, Raffaele, _eExamination committee
700	1		_aSalam, Abdul P., _eExamination Committee
710	2		_aRoyal Thai Government Fellowship, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. ISE-22-08
856	4	0	_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B18182
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902			_a250421
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909			_aBarcode : - _bCREATED : 2023-01-02 _cRECORD # : i13428986 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050121041684 _bCREATED : 2023-02-13 _cRECORD # : i13432072 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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