NDLI: Photocatalytic digestion of total phosphorus utilising nanotitanium dioxide photocatalyst

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Photocatalytic digestion of total phosphorus utilising nanotitanium dioxide photocatalyst

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The Journal of Engineering

Photocatalytic digestion of total phosphorus utilising nanotitanium dioxide photocatalyst

Content Provider	IET Digital Library
Author	Dong, Tian Tong, Jianhua Bian, Chao Sun, Jizhou Xia, Shanhong
Abstract	Thermal-assisted ultraviolet (UV) and H2O2-assisted UV photocatalytic oxidation methods utilizing nano-TiO2 photocatalyst are presented for the digestion of total phosphorus (TP) in water. The photocatalytic experiments for TP digestion were conducted using a 365 nm wavelength UV light, and TiO2 nanoparticles immobilized on a silicon wafer as the photocatalyst. The effects of H2O2 and temperature on the UV photocatalytic oxidation process are explained. The pseudo-first-order rate constants k of two phosphorus compounds for the UV digestion processes were obtained according to the pseudo-first-order equation. Both H2O2 and heating could improve the efficiency of the UV photocatalytic oxidation method. But by comparison, the enhancement of heating on the UV photocatalysis process is more distinctly than H2O2. In addition, the thermal-assisted UV digestion process will not lead to secondary pollution since no oxidant is needed in this digestion process, which makes it more compatible with electrochemical detection of TP. The thermal-assisted UV digestion method was employed for the digestion of real water samples. Compared with the conventional thermal digestion method for TP detection, this thermal-assisted UV digestion process decreased the digestion temperature from 120°C to 60°C within the same time, which enable the digestion process work at normal pressure.
Starting Page	582
Ending Page	586
Page Count	5
Volume Number	8
e-ISSN	17500443
Issue Number	Issue 10, Oct (2013)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/mnl/8/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/mnl.2013.0279
Journal	Micro & Nano Letters
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Activation Energies Catalysis Electrochemical Detection H2O2-assisted UV Photocatalytic Oxidation Method Heat And Thermomechanical Treatments Heat Treatment Heterogeneous Catalysis at SurFace And Other Surface Reactions Measurement of Chemical Rate Constants Nanostructured Material Nanotitanium Dioxide Photocatalyst Oxidation Phosphomolybdenum Blue Reaction Photocatalytic Digestion Photochemistry Photolysis And Photodissociation by IR Pseudo-first-order Equation Pseudo-first-order Rate Constants Reaction Cross Sections Reaction Mechanisms Reaction Rate Constants Real Water Sample Silicon Wafer Sodium Glycerophosphate Sodium Tripolyphosphate Specific Chemical Reactions Spectrophotometry Temperature 120 DegC to 60 DegC Thermal Digestion Method Thermal-assisted Ultraviolet Photocatalytic Oxidation Method TiO2 NanoParticle TiO2-Si Titanium Compound Total Phosphorus UV And Visible Radiation Wavelength 365 Nm
Content Type	Text
Resource Type	Article

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