Nanosize water-soluble colloidal MnO2: an efficient oxidant for the ruthenium(III)-catalyzed degradation of metronidazole

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Savita Pataila ◽  
Bhawana Jain ◽  
Gautam Sheel Thool ◽  
Ajaya Kumar Singh
Keyword(s):  
Water Soluble ◽  
Colloidal Mno2

Kinetics of metribuzin degradation by colloidal manganese dioxide in absence and presence of surfactants

2014 ◽  
Vol 68 (1) ◽  
Author(s):  
Qamruzzaman ◽  
Abu Nasar
Keyword(s):  
Sodium Dodecyl ◽  
Oxidative Degradation ◽  
Activation Parameters ◽  
Water Soluble ◽  
Ionic Surfactant ◽  
Ammonium Bromide ◽  
Pseudo First Order Reaction ◽  
First Order ◽  
Colloidal Mno2 ◽  
Kinetics Of

AbstractThe kinetics of the degradation of metribuzin by water-soluble colloidal MnO2 in acidic medium (HClO4) were studied spectrophotometrically in the absence and presence of surfactants. The experiments were performed under pseudo-first-order reaction conditions in respect of MnO2. The degradation was observed to be of the first order in respect of MnO2 while of fractional order for both metribuzin and HClO4. The rate constant for the degradation of metribuzin was observed to decrease as the concentration of MnO2 increased. The anionic surfactant, sodium dodecyl sulphate (SDS), was observed to be ineffective whereas the non-ionic surfactant, Triton X-100 (TX-100), accelerated the reaction rate. However, the cationic surfactant, cetyltrimethyl ammonium bromide (CTAB), caused flocculation with oppositely-charged colloidal MnO2; hence further study was not possible. The catalytic effect of TX-100 was discussed in the light of the available mathematical model. The kinetic data were exploited to generate the various activation parameters for the oxidative degradation of metribuzin by colloidal MnO2 in the absence as well as the presence of the non-ionic surfactant, TX-100.

Kinetic study of oxidation of paracetamol by water-soluble colloidal MnO2 in the presence of an anionic surfactant

2016 ◽  
Vol 294 (10) ◽  
pp. 1611-1622 ◽  
Author(s):  
Ajaya Kumar Singh ◽  
Neelam Sen ◽  
Som Kumar Chatterjee ◽  
Md. Abu Bin Hasan Susan
Keyword(s):  
Kinetic Study ◽  
Anionic Surfactant ◽  
Water Soluble ◽  
Colloidal Mno2

A kinetic study of the oxidation of l-methionine by water soluble colloidal MnO2

2007 ◽  
Vol 285 (10) ◽  
pp. 1169-1173 ◽  
Author(s):  
Mohammad Ilyas ◽  
Maqsood Ahmad Malik ◽  
Zaheer Khan
Keyword(s):  
Kinetic Study ◽  
Water Soluble ◽  
Colloidal Mno2

Formation, characterization and stabilization of water-soluble colloidal MnO2 in the oxidation of methionine, thiourea and thioacetamide by permanganate

2007 ◽  
Vol 285 (13) ◽  
pp. 1479-1485 ◽  
Author(s):  
Shaeel Ahmed AL-Thabaiti ◽  
F. M. Al-Nowaiser ◽  
A. Y. Obaid ◽  
A. O. Al-Youbi ◽  
Zaheer Khan
Keyword(s):  
Water Soluble ◽  
Colloidal Mno2 ◽  
Oxidation Of Methionine

Kinetics of the reduction of water-soluble colloidal MnO2 by ascorbic acid

2005 ◽  
Vol 290 (1) ◽  
pp. 184-189 ◽  
Author(s):  
Zaheer Khan ◽  
Parveen Kumar ◽  
Kabir-ud-Din
Keyword(s):  
Ascorbic Acid ◽  
Water Soluble ◽  
Colloidal Mno2 ◽  
Kinetics Of
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