Degradation of methylene blue using co-dopants Mg and Se in an hydroxyapatite composite.

Autor: El-Naggar ME; Textile Research Division, National Research Center, Dokki, Cairo, Egypt., Abu Ali OA; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, Saudi Arabia., Saleh DI; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif, Saudi Arabia., Abu-Saied MA; Polymeric Materials Research Department, Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications (SRTA-CITY), New Borg El-Arab City, Alexandria, Egypt., Ahmed MK; Faculty of Nanotechnology for Postgraduate Studies, Cairo University, El-Sheikh Zayed, 12588, Egypt.; Department of Physics, Faculty of Science, Suez University, Suez, 43518, Egypt., Abdel-Fattah E; Physics Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. 173, Al-Kharj, Saudi Arabia.; Physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt., Mansour SF; Physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt.
Jazyk: angličtina
Zdroj: Luminescence : the journal of biological and chemical luminescence [Luminescence] 2022 Mar; Vol. 37 (3), pp. 399-407. Date of Electronic Publication: 2022 Jan 28.
DOI: 10.1002/bio.4183
Abstrakt: In this work, a comparative study was made of different magnesium ion content incorporated into hydroxyapatite (HAP) and modified with selenite ions, with the aim to develop the degradation performance of methylene blue. Although the dopant metal (Mg 2+ ) was present at a relatively low ratio, it induced a change in the microstructure, morphology, surface area, external surface charge, particle size, and degradation performance. The effect of magnesium and selenium binary doping on microstructure and degradation of methylene blue was evaluated. The external surface charge measured by zeta potential clarified that the highest negativity was -11.8 mV and this was accomplished in 1.0 Mg/Se-HAP. Furthermore, the roughness average increased from 36.8 nm, reaching 59.2 nm upon the addition of Mg(II). Moreover, transmission electron microscope micrographs showed that compositions were formed as rod shapes. The process of degradation was optimized, showing effectiveness in methylene blue degradation of 62.4% after 150 min of exposure to visible light. Electrostatic attraction and H-bonding, and coordination played vital roles in the adsorption process. The recyclability of the as-prepared compositions demonstrated that the effectiveness had been reduced to ~54.2% after five times of re-use.
(© 2022 John Wiley & Sons Ltd.)
Databáze: MEDLINE
Externí odkaz: