Photocatalysis of environmental organic pollutants and antioxidant activity of flavonoid conjugated gold nanoparticles was written by Pradhan, Sweta Priyadarshini;Swain, Sunsita;Sa, Nishigandha;Pilla, Satya Narayan;Behera, Anindita;Sahu, Pratap Kumar;Chandra Si, Sudam. And the article was included in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy in 2022.COA of Formula: C16H18ClN3S This article mentions the following:
The unique properties of nanomaterials have the potential application in different fields of biomedical application along with the management of environmental pollutants. This research work involved the isolation of hesperidin from the orange peel and the preparation of hesperidin gold nanoparticles by the chem. reduction method. The high substrate specificity and lower band gap enable the excitation of gold nanoparticles in visible light. Hence gold nanoparticles are chosen nowadays for the management and removal of organic pollutants. The efficacy of hesperidin gold nanoparticles was evaluated by the photocatalytic activity on organic dyes and pollutants like methyl orange, methylene blue, bromocresol green, and 4 – nitro phenol with sodium borohydride as reducing agent and the antioxidant study by scavenging of free radicals of DPPH, ABTS, and hydroxyl free radicals of hydrogen peroxide. The kinetics of photocatalytic degradation of organic dyes and 4 – nitro phenol was found to follow the first order with rate constants of 10 x 10-3, 37 x 10-3, 23 x 10-3 and 49 x 10-3 min-1 for methyl orange, methylene blue, bromocresol green and 4 – nitro phenol resp. The hesperidin gold nanoparticles showed significant antioxidant activity as compared to ascorbic acid as standard The flavonoid conjugated gold nanoparticles can be an efficient antioxidant and photocatalyst for the management of different diseases and wastewater treatment resp. In the experiment, the researchers used many compounds, for example, 3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4COA of Formula: C16H18ClN3S).
3,7-Bis(dimethylamino)phenothiazin-5-ium chloride (cas: 61-73-4) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.COA of Formula: C16H18ClN3S
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics