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Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements

หน่วยงาน จุฬาลงกรณ์มหาวิทยาลัย

รายละเอียด

ชื่อเรื่อง : Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements
นักวิจัย : Ratchadaporn Ninpetch
คำค้น : Titanium dioxide , Catalysts , Photocatalysis , Sol-gel process
หน่วยงาน : จุฬาลงกรณ์มหาวิทยาลัย
ผู้ร่วมงาน : Akawat Sirisuk , Chulalongkorn University. Faculty of Engineering
ปีพิมพ์ : 2547
อ้างอิง : 9745314226 , http://cuir.car.chula.ac.th/handle/123456789/1606
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Thesis (M.Eng.)--Chulalongkorn University, 2004

Titania nanoparticles were prepared via a sol-gel method using titanium isopropoxide as a precursor and underwent calcination at various conditions. Titania was evaluated for its photocatalytic activity in photocatalytic oxidation of ethylene in gas phase. Various characterization techniques, including XRD, XRF, FTIR and nitrogen adsorption, were employed. Effects of calcination conditions, namely, temperature and holding time in the furnace, on properties of titania nanoparticles were investigated. Titania that was calcined at 200 degree celcius for one hour exhibited the highest photocatalytic activity because of its large specific surface area and absence of rutile phase in the photocatalyst. Four different metal oxides, namely, SiO[subscript 2], ZrO[subscript 2], SnO[subscript 2], and CeO[subscript 2], were added to TiO[subscript 2] to form binary metal oxides. The amount of second metal oxide added was 10 wt%. The mixed oxides were calcined at 200 degree celcius for one hour and were then tested for activities. Addition of the second metal oxide appeared to lower photocatalytic activity of the photocatalyst, when compared to that of pure titania.

บรรณานุกรม :
Ratchadaporn Ninpetch . (2547). Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements.
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย.
Ratchadaporn Ninpetch . 2547. "Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements".
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย.
Ratchadaporn Ninpetch . "Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements."
    กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย, 2547. Print.
Ratchadaporn Ninpetch . Effect of calcination conditions on properties and photocatalytic activities of titanium dioxide and mixtures of titanium dioside and oxide of group IVA and IVB elements. กรุงเทพมหานคร : จุฬาลงกรณ์มหาวิทยาลัย; 2547.