AUTHOR=Khan Mahreen , Ikram Muhammad , Haider Ali , Ul-Hamid Anwar , Ullah Hameed , Shahzadi Iram , Khan Sherdil , Kanoun Mohammed Benali , Goumri-Said Souraya , Medina Francisco , Nabgan Walid TITLE=Experimental and DFT study of GO-decorated CaO quantum dots for catalytic dye degradation and bactericidal potential JOURNAL=Frontiers in Environmental Science VOLUME=11 YEAR=2023 URL=https://www.frontiersin.org/journals/environmental-science/articles/10.3389/fenvs.2023.1158399 DOI=10.3389/fenvs.2023.1158399 ISSN=2296-665X ABSTRACT=

This research lays the groundwork for preparing graphene oxide (GO)-doped CaO nanocomposites for efficient antibacterial potential and dye degradation. The study aimed to reduce the recombination rate of the electron hole (e−/h+) of CaO and improve charge transfer. This issue can be minimized by doping high-surface area GO into CaO quantum dots (QDs). Herein, the one-pot co-precipitation technique has prepared various concentrations (1, 3, and 5 wt%) of GO-doped CaO. Characterization techniques were used to investigate optical, elemental analysis, microstructural, functional, and morphological properties. The addition of GO into QDs showed excellent catalytic activity (CA) to control sample CaO against methylene blue (MB) in basic and acidic media compared to the neutral media. The synergistic effect of morphological alternation attributed to an increase in the mechanism of CA upon doping. Various concentrations of GO to QDs promised remarkable bactericidal potency against Escherichia coli.