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A surface-fluorinated-TiO"2-KMnO"4 photocatalytic system for [An article from: Analytica Chimica Acta]
Book Details
PublisherElsevier
ISBN / ASINB000P6NZXS
ISBN-13978B000P6NZX6
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MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Analytica Chimica Acta, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A new method for chemical oxygen demand (COD) determination has been developed, based on photocatalytic oxidative degradation by using a fluorinated-TiO"2-KMnO"4 system. In such a system, a linear correlation is observed between the amount of oxidizable dissolved organic matter and the amount of MnO"4^- consumed by the coupled reduction process. Thus, the COD determination is transformed to a simple and direct determination of the deletion of MnO"4^-. The surface fluorination of TiO"2 nanoparticles can enhance the rate of photocatalytic oxidation of organic matter and the rate of coupled photocatalytic reduction of MnO"4^-. This makes the method be rapid, environment friendly and easy for operation. Under optimized conditions, this method can respond linearly to COD of potassium hydrogen phthalate (KHP) in the range of 0.1-280mgL^-^1, with a detection limit of 0.02mgL^-^1 COD. The COD in samples of tap water, lake water and paper industry sewage has been determined satisfactorily by using this method.
Description:
A new method for chemical oxygen demand (COD) determination has been developed, based on photocatalytic oxidative degradation by using a fluorinated-TiO"2-KMnO"4 system. In such a system, a linear correlation is observed between the amount of oxidizable dissolved organic matter and the amount of MnO"4^- consumed by the coupled reduction process. Thus, the COD determination is transformed to a simple and direct determination of the deletion of MnO"4^-. The surface fluorination of TiO"2 nanoparticles can enhance the rate of photocatalytic oxidation of organic matter and the rate of coupled photocatalytic reduction of MnO"4^-. This makes the method be rapid, environment friendly and easy for operation. Under optimized conditions, this method can respond linearly to COD of potassium hydrogen phthalate (KHP) in the range of 0.1-280mgL^-^1, with a detection limit of 0.02mgL^-^1 COD. The COD in samples of tap water, lake water and paper industry sewage has been determined satisfactorily by using this method.
