Congo Red Degradation in Anode and Sunlight/derivative Persulfate Composite Oxidation System

2012 ◽  
Vol 15 (1) ◽  
Author(s):  
Naidong Zhang ◽  
Zhengjiang Zhu ◽  
Wanli Luan

AbstractAnodic oxidation and sulphate radical oxidation were combined in the study for degradation of refractory organics. The degradation reaction of organic compounds and persulfate generation reaction occur simultaneously in Pt anodic oxidation system with electrolyte of Na

Biomolecules ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 501
Author(s):  
Ptak-Kaczor Magdalena ◽  
Kwiecińska Klaudia ◽  
Korchowiec Jacek ◽  
Chłopaś Katarzyna ◽  
Banach Mateusz ◽  
...  

In the search for new carriers capable of transporting toxic drugs to a target, particular attention has been devoted to supramolecular systems with a ribbon-like micellar structure of which Congo red is an example. A special promise of the possible use of such systems for directing drugs to a target emerges from their particular affinity to immune complexes and as an independent property, binding many organic compounds including drugs by intercalation. Serum albumin also appeared able to bind micellar particles of such systems. It may protect them against dilution in transport. The mathematical tool, which relies on analysis of the distribution of polarity and hydrophobicity in protein molecules (fuzzy oil drop model), has been used to find the location of binding area in albumin as well as anchorage site for Congo red in heated IgG light chain used as a model presenting immunoglobulin-like structures. Results confirm the suggested formerly binding site of Congo red in V domain of IgG light chain and indicated the cleft between pseudo-symmetric domains of albumin as the area of attachment for the dye.


1973 ◽  
Vol 26 (8) ◽  
pp. 1791 ◽  
Author(s):  
RS Dickson ◽  
LJ Michel

The thermal decomposition of Co2(CO)6(PhC2Ph) has been investigated in detail. Differential scanning calorimetry was used to determine the most suitable temperature range for the study. At 180�, Co2(CO)6(PhC2Ph) decomposes to form cobalt, carbon monoxide, tetraphenylcyclopentadienone, hexaphenylbenzene, and other organic compounds. Variation in the temperature, the time, and the solvent used for the degradation reaction causes significant changes in the yields of the organic products. An investigation of the effects of adding stoichiometric amounts of free alkyne, tetra-phenylcyclopentadienone, and hexaphenylbenzene has been initiated in an attempt to understand the degradation mechanism.


2017 ◽  
Vol 118 ◽  
pp. 1-11 ◽  
Author(s):  
Clément Trellu ◽  
Nihal Oturan ◽  
Yoan Pechaud ◽  
Eric D. van Hullebusch ◽  
Giovanni Esposito ◽  
...  

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1347 ◽  
Author(s):  
Baluk ◽  
Kobylański ◽  
Lisowski ◽  
Trykowski ◽  
Klimczuk ◽  
...  

One of the most important challenges in the fabrication of ordered tantalum pentaoxide (Ta2O5) nanotube arrays (NTs) via the electrochemical method is the formation of nanotubes that adhere well to the Ta substrate. In this paper, we propose a new protocol that allows tight-fitting Ta2O5 nanotubes to be obtained through the anodic oxidation of tantalum foil. Moreover, to enhance their activity in the photocatalytic reaction, in this study, they have been decorated by nontoxic bismuth sulfide (Bi2S3) quantum dots (QDs) via a simple successive ionic layer adsorption and reaction (SILAR) method. Transmission electron microscopy (TEM) analysis revealed that quantum dots with a size in the range of 6–11 nm were located both inside and on the external surfaces of the Ta2O5 NTs. The effect of the anodization time and annealing conditions, as well as the effect of cycle numbers in the SILAR method, on the surface properties and photoactivity of Ta2O5 nanotubes and Bi2S3/Ta2O5 composites have been investigated. The Ta2O5 nanotubes decorated with Bi2S3 QDs exhibit high photocatalytic activity in the toluene degradation reaction, i.e., 99% of toluene (C0 = 200 ppm) was degraded after 5 min of UV-Vis irradiation. Therefore, the proposed anodic oxidation of tantalum (Ta) foil followed by SILAR decorating allows a photocatalytic surface, ready to use for pollutant degradation in the gas phase, to be obtained.


1970 ◽  
Vol 48 (10) ◽  
pp. 1533-1535 ◽  
Author(s):  
N. L. Weinberg

A ring expanded lactone is obtained on electrochemical oxidation of t-BuOOH in presence of tetracyclone. The same product is formed on chemical oxidation of a mixture of t-BuOOH and tetracyclone with cerie ammonium sulfate or on heating the mixture to dryness.


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