Photolytic and photocatalytic decomposition of fenitrothion by PW12O403- and TiO2: a comparative study was written by Kormali, P.;Dimoticali, D.;Tsipi, D.;Hiskia, A.;Papaconstantinou, E.. And the article was included in Applied Catalysis, B: Environmental in 2004.Category: ethers-buliding-blocks This article mentions the following:
The photocatalytic degradation of fenitrothion under UV and near visible light in the presence of the polyoxometallate (POM) photocatalyst PW12O403- in aqueous solutions has been studied and compared with the photodegradation by TiO2 suspensions. Fenitrothion is effectively degraded in the presence of both photocatalysts following pseudo-first-order kinetics. Complete mineralization of fenitrothion is achieved using both photocatalysts, leading to the formation of CO2 and inorganic ions (PO43-, SO42-, NO2–, and NO3–) as final products. Various intermediates, identical in the presence of both photocatalysts, have been detected and identified using HPLC and gas chromatog.-mass spectrometry (GC-MS) techniques. The similarity of the intermediates by these two methods, i.e., PW12O403- and TiO2, tends to suggest that the photodegradation mechanism of fenitrothion in as other cases as well takes place mainly via a common reagent, i.e., OH radicals. A photodegradation mechanism is proposed. Photolysis of fenitrothion, i.e., in the absence of catalysts, is very slow and far from producing complete mineralization. A relatively large number of intermediates is observed, most of which are not detected in the photocatalytic processes. In the experiment, the researchers used many compounds, for example, 3-Methyl-4-nitroanisole (cas: 5367-32-8Category: ethers-buliding-blocks).
3-Methyl-4-nitroanisole (cas: 5367-32-8) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethers feature bent C閳ユ彊閳ユ弲 linkages. In dimethyl ether, the bond angle is 111鎺?and C閳ユ彊 distances are 141 pm. The barrier to rotation about the C閳ユ彊 bonds is low. The bonding of oxygen in ethers, alcohols, and water is similar. In the language of valence bond theory, the hybridization at oxygen is sp3.Category: ethers-buliding-blocks
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem