Authors:
Ekkachai Kanchanatip Department of Chemical Engineering, Thammasat University, Pathumthani 12120, Thailand

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Nurak Grisdanurak Department of Chemical Engineering, Thammasat University, Pathumthani 12120, Thailand
NCE for Environmental and Hazardous Waste Management, Thammasat University, Pathumthani 12120, Thailand

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Raumporn Thongruang Department of Physics, Thammasat University, Pathumthani 12120, Thailand

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Arthit Neramittagapong Department of Chemical Engineering, KhonKaen University, KhonKaen 40002, Thailand

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Abstract

V-TiO2 and C60/V-TiO2 photocatalysts were synthesized by titanium(IV) isopropoxide using a chelation sol–gel and impregnation method. All catalysts were calcined at 450 °C for 5 h, which resulted in them being in the anatase phase. The catalysts were characterized by thermogravimetric analysis and differential thermal analysis (TGA–DTA), X-ray diffractometry (XRD), UV–vis diffuse reflectance (UV–DR) spectra, Brunauer–Emmett–Teller (BET) surface area analyses, photoluminescence (PL) spectra, and zeta potential, and tested for their paraquat photodegradation ability under visible light. An insignificant decrease in surface area was observed in the modified catalysts. The modified photocatalysts exhibited higher visible light responses, ranking them as follows: 1C60/1 V-TiO2 > 1 V-TiO2 > TiO2 (composition in wt%). 1wt% C60/1wt% V-TiO2 performed higher activity than 1wt% V-TiO2. The kinetics of paraquat photocatalytic degradation was expressed by the Langmuir–Hinshelwood (LH) model with a rate constant of 0.171 mg/L min−1.

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
1
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)