Synthesis of Al/starch co-doped in CaO nanoparticles for enhanced catalytic and antimicrobial activities: experimental and DFT approaches

In this work, aluminum/starch (St)-doped CaO nanoparticles (NPs) were synthesized by a co-precipitation method to degrade harmful dyes in various pH media. Systematic characterization was performed to investigate the influence of Al/St dopants on the composition, crystal structure, functional groups...

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Bibliographic Details
Published in:	RSC advances Vol. 12; no. 5; pp. 32142 - 32155
Main Authors:	Ikram, Muhammad, Haider, Ali, Bibi, Syeda Tayaba, Ul-Hamid, Anwar, Haider, Junaid, Shahzadi, Iram, Nabgan, Walid, Moeen, Sawaira, Ali, Salamat, Goumri-Said, Souraya, Kanoun, Mohammed Benali
Format:	Journal Article
Language:	English
Published:	England Royal Society of Chemistry 09-11-2022 The Royal Society of Chemistry
Subjects:	Absorption spectra Aluminum Antiinfectives and antibacterials Chemistry Crystal structure Density functional theory Depletion Dopants E coli Energy gap Functional groups Interlayers Methylene blue Morphology Nanoparticles Optical properties Red shift Spectrum analysis
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Summary:	In this work, aluminum/starch (St)-doped CaO nanoparticles (NPs) were synthesized by a co-precipitation method to degrade harmful dyes in various pH media. Systematic characterization was performed to investigate the influence of Al/St dopants on the composition, crystal structure, functional groups present, optical characteristics, and morphology of CaO NPs. Further hybrid density functional analyses corroborated that the band gap energy was reduced as the Al concentration in starch-doped CaO is increased. Optical absorption spectra of the synthesized materials revealed a redshift upon doping, which indicated depletion in the band gap energy of Al/St-doped CaO. PL spectroscopy showed that the intensity of CaO was reduced by the incorporation of Al and St assigned to minimum electron-hole pair recombination. Interlayer spacing and morphological features were determined by HR-TEM. HRTEM revealed that the control sample has cubic NPs and the incorporation of St showed overlapping around agglomerated NPs. The d -spacing of CaO was little enhanced by the inclusion of dopants. Experimental outcomes indicated that the addition of Co-dopants improved the catalytic potential of CaO NPs. Al (4%)/St-doped CaO NPs expressed a significant reduction of methylene blue in a basic environment. The maximum bactericidal performance was observed as 10.25 mm and 4.95 mm in the inhibition zone against S. aureus and E. coli , respectively, after the addition of Al and St in CaO. In this work, aluminum/starch (St)-doped CaO nanoparticles (NPs) were synthesized by a co-precipitation method to degrade harmful dyes in various pH media.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2046-2069 2046-2069
DOI:	10.1039/d2ra06340a