Kinetic Study of the Electrochemical Oxidation of Salicylic Acid and Salicylaldehyde Using UV/vis Spectroscopy and Multivariate Calibration

2009 ◽  
Vol 113 (33) ◽  
pp. 9348-9353 ◽  
Author(s):  
Nelson Matyasovszky ◽  
Min Tian ◽  
Aicheng Chen
Keyword(s):  
Salicylic Acid ◽  
Kinetic Study ◽  
Electrochemical Oxidation ◽  
Multivariate Calibration ◽  
Vis Spectroscopy

scholarly journals One-step preparation of antimicrobial silicone materials based on PDMS and salicylic acid: insights from spatially and temporally resolved techniques

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Luca Barbieri ◽  
Ioritz Sorzabal Bellido ◽  
Alison J. Beckett ◽  
Ian A. Prior ◽  
Jo Fothergill ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Laser Scanning ◽  
Pathogenic Bacteria ◽  
Pharmaceutical Products ◽  
Laser Scanning Microscopy ◽  
Wound Dressings ◽  
Confocal Laser ◽  
Vis Spectroscopy ◽  
Wide Range ◽  
One Step

AbstractIn this work, we introduce a one-step strategy that is suitable for continuous flow manufacturing of antimicrobial PDMS materials. The process is based on the intrinsic capacity of PDMS to react to certain organic solvents, which enables the incorporation of antimicrobial actives such as salicylic acid (SA), which has been approved for use in humans within pharmaceutical products. By combining different spectroscopic and imaging techniques, we show that the surface properties of PDMS remain unaffected while high doses of the SA are loaded inside the PDMS matrix. The SA can be subsequently released under physiological conditions, delivering a strong antibacterial activity. Furthermore, encapsulation of SA inside the PDMS matrix ensured a diffusion-controlled release that was tracked by spatially resolved Raman spectroscopy, Attenuated Total Reflectance IR (ATR-IR), and UV-Vis spectroscopy. The biological activity of the new material was evaluated directly at the surface and in the planktonic state against model pathogenic bacteria, combining confocal laser scanning microscopy, electron microscopy, and cell viability assays. The results showed complete planktonic inhibition for clinically relevant strains of Staphylococcus aureus and Escherichia coli, and a reduction of up to 4 orders of magnitude for viable sessile cells, demonstrating the efficacy of these surfaces in preventing the initial stages of biofilm formation. Our approach adds a new option to existing strategies for the antimicrobial functionalisation of a wide range of products such as catheters, wound dressings and in-dwelling medical devices based on PDMS.

Elucidating the secondary effect in the Lewis acid mediated anodic shift of electrochemical oxidation of a Cu(ii) complex with a N2O2 donor unsymmetrical ligand

2019 ◽  
Vol 48 (39) ◽  
pp. 14898-14913 ◽  
Author(s):  
Souvik Maity ◽  
Soumavo Ghosh ◽  
Ashutosh Ghosh
Keyword(s):  
Cyclic Voltammetry ◽  
Electrochemical Oxidation ◽  
Lewis Acid ◽  
Linear Dependence ◽  
Lewis Acidity ◽  
Secondary Effect ◽  
Vis Spectroscopy ◽  
Electrochemical Signal

The causes behind the fluctuations from a linear dependence of the electrochemical signal of a guest bound metalloligand [CuL] with the Lewis acidity of redox-inactive cations were established by using UV-vis spectroscopy and cyclic voltammetry.

Kinetic study on the photocatalytic degradation of salicylic acid using ZnO catalyst

2009 ◽  
Vol 166 (2-3) ◽  
pp. 1357-1361 ◽  
Author(s):  
A. Nageswara Rao ◽  
B. Sivasankar ◽  
V. Sadasivam
Keyword(s):  
Salicylic Acid ◽  
Photocatalytic Degradation ◽  
Kinetic Study

Multivariate calibration in UV-vis spectroscopy

2005 ◽  
Vol 3 (S1) ◽  
pp. 241-247 ◽  
Author(s):  
C. Pizarro ◽  
L. A. Sarabia ◽  
J. López Palacios
Keyword(s):  
Multivariate Calibration ◽  
Vis Spectroscopy

Electrochemical oxidation of COD from real textile wastewaters: Kinetic study and energy consumption

Chemosphere ◽  
2017 ◽  
Vol 171 ◽  
pp. 332-338 ◽  
Author(s):  
Jiaxiu Zou ◽  
Xiaolan Peng ◽  
Miao Li ◽  
Ying Xiong ◽  
Bing Wang ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Kinetic Study ◽  
Electrochemical Oxidation ◽  
Textile Wastewaters
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