Selective degradation of oxytetracycline by singlet oxygen in a Fenton-like oxidation

Recently, Professor Kong Lingtao's research group from the Hefei Institute of Physics, Chinese Academy of Sciences has prepared a hollow amorphous Co/C composite material for activating hydrogen peroxide (H2O2) to generate singlet oxygen and realizing the selection of oxytetracycline (OTC) in complex water matrices. Sexual elimination.The results were published in the journal Chemical Engineering.googletag.cmd.push(function() { googletag.display('div-gpt-ad-1449240174198-2'); });
OTC is the most common tetracycline antibiotic in animal husbandry.It can be detected in areas with strong biological stability, such as water and soil, that cannot be effectively removed by conventional technical means.
As a simple and efficient advanced oxidation technology, Fenton-like oxidation is considered as an effective method for water pollution control.As an electrophilic non-radical, singlet oxygen exhibits excellent anti-interference ability to background substrates, which is helpful for the selective removal of organic pollutants containing electron-rich groups.However, in most Fenton-like reactions, the yield of singlet oxygen is low and the contribution is small.
In this study, the researchers designed and fabricated a hollow amorphous Co/C composite with a large number of oxygen-containing functional groups such as carbonyl and hydroxyl groups distributed on the surface.
They obtained the Co/C-3 material by optimizing the ratio of cobalt and carbon, and achieved the best degradation of 20 ppm OTC by activating H2O2 at neutral pH.The catalytic degradation system exhibits excellent repeatability, stability and anti-interference ability.The results of quenching experiments and electron paramagnetic resonance confirmed that the converted singlet oxygen was the main oxidizing species, and no hydroxyl radical appeared in the system.
The synergy between cobalt and oxygen-containing functional groups within the material plays a key role in activating hydrogen peroxide in the formation of singlet oxygen.In addition, the possible degradation pathways and potential ecotoxicity of OTC and its intermediates were also revealed.
Please use this form if you encounter spelling errors, inaccuracies, or want to send an editorial request for the content of this page.For general enquiries, please use our contact form.For general feedback, please use the public comment section below (please follow the guidelines).
Your feedback is important to us.However, due to the volume of messages, we do not guarantee individual responses.
Your email address is only used to let recipients know who sent the email.Neither your address nor the recipient's address will be used for any other purpose.The information you enter will appear in your email and will not be retained by in any form.
Get weekly and/or daily updates delivered to your inbox.You can unsubscribe at any time and we will never share your details with third parties.
This website uses cookies to assist with navigation, analyze your use of our services, collect data for advertising personalization, and serve content from third parties.By using our website, you acknowledge that you have read and understood our Privacy Policy and Terms of Use.

Post time: Mar-16-2022