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Characteristics of supported nano-TiO2/ZSM-5/silica gel (SNTZS): Photocatalytic degradation of phenol

Zainudin, Nor Fauziah and Abdullah, Ahmad Zuhairi and Mohamed, Abdul Rahman (2010) Characteristics of supported nano-TiO2/ZSM-5/silica gel (SNTZS): Photocatalytic degradation of phenol. JOURNAL OF HAZARDOUS MATERIALS . ISSN 0304-3894

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Abstract

Photocatalytic degradation of phenol was investigated using the supported nano-TiO2/ZSM-5/silica gel (SNTZS) as a photocatalyst in a batch reactor. The prepared photocatalyst was characterized using XRD, TEM, FT-IR and BET surface area analysis. The synthesized photocatalyst composition was developed using nano-TiO2 as the photoactive component and zeolite (ZSM-5) as the adsorbents, all supported on silica gel using colloidal silica gel binder. The optimum formulation of SNTZS catalyst was observed to be (nano-TiO2:ZSM-5:silica gel:colloidal silica gel = 1:0.6:0.6: 1) which giving about 90% degradation of 50 mg/L phenol solution in 180 min. The SNTZS exhibited higher photocatalytic activity than that of the commercial Degussa P25 which only gave 67% degradation. Its high photocatalytic activity was due to its large specific surface area (275.7 m(2)/g), small particle size (8.1 nm), high crystalline quality of the synthesized catalyst and low electron-hole pairs recombination rate as ZSM-5 adsorbent was used. The SNTZS photocatalyst synthesized in this study also has been proven to have an excellent adhesion and reusability.

Item Type:Article
Uncontrolled Keywords:DOPED NANO TIO2; TITANIUM-DIOXIDE; CATALYTIC DEGRADATION; ZEOLITE; PARTICLES; ANATASE; LIGHT; WATER; 4-CHLOROPHENOL; DECOMPOSITION
Subjects:Technology > Nanotechnology and environmental applications
Engineering > Nanotechnology applications in civil engineering
ID Code:8735
Deposited By:CSMNT
Deposited On:27 Mar 2010 07:30
Last Modified:27 Mar 2010 07:30

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