Antibacterial property improvement of nano-MgO prepared by lithium doping under nitrogen calcination
Source abstract
Abstract
Abstract MgO nanomaterial (nano-MgO) is a promising candidate in the antibacterial field owing to its large reserves, low cost, high stability, and safety to both the environment and human beings. However, the actual application of nano-MgO is restricted by its relatively low antibacterial activity. In the present work, we report the fabrication of modified nano-MgO via lithium (Li) ion doping and an oxygen-deficient calcination process. The antibacterial ratio of Li/MgON at 100 μg/mL was about 99.6% against 108 CFU/mL Escherichia coli (E. coli, ATCC 25922), suggesting that the antibacterial activity was successfully enhanced compared with that of pure MgO and Li/MgO calcined in air. This superior activity mainly originated from the increased number of oxygen vacancies based on the synergetic effects of Li doping and N2 calcination, resulting in more •O2− generation. The disinfection of drinking water tests showed that Li/MgON quickly killed E. coli in 1 h and retained high activity over 30 days. These results indicated that the formation of modified nano-MgO by Li doping and N2 calcination is a novel and effective approach to obtain a promising MgO-based antibacterial agent with highly effective antibacterial property and durability.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Oxide Properties and Applications · Nanoparticles: synthesis and applications · Bone Tissue Engineering Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (36)
Show source-provided references
1. Preparation of an antibacterial chitosan-coated biochar-nanosilver composite for drinking water purification10.1016/j.carbpol.2019.05.017 ↗
2. Exploring the use of ceramic disk filter coated with Ag/ZnO nanocomposites as an innovative approach for removing Escherichia coli from household drinking water10.1016/j.chemosphere.2019.125545 ↗
3. Microbial contamination in drinking water at public outdoor recreation facilities in New Zealand
4. Enteropathogenic and enterohemorrhagic Escherichia coli infections: translocation, translocation, translocation10.1128/IAI.73.5.2573-2585.2005 ↗
5. Controllable preparation of nano-MgO and investigation of its bactericidal properties10.1016/j.jinorgbio.2004.12.022 ↗
6. Highly active MgO nanoparticles for simultaneous bacterial inactivation and heavy metal removal from aqueous solution10.1016/j.cej.2016.11.134 ↗
7. Synthesis of silver-cerium titanate nanotubes and their surface properties and antibacterial applications10.1016/j.msec.2020.111051 ↗
8. Facile synthesis, antibacterial mechanisms and cytocompatibility of Ag-MnFe2O4 magnetic nanoparticles10.1016/j.ceramint.2020.05.085 ↗
9. Effect of ceramic powder slurry on spores of bacillus subtilis10.1252/jcej.28.556 ↗
10. Antibacterial characteristics of magnesium oxide powder10.1023/A:1008916209784 ↗
11. Antibacterial activity of MgO nanoparticles based on lipid peroxidation by oxygen vacancy10.1007/s11051-012-1063-6 ↗
12. Synthesis of (111) facet-exposed MgO with surface oxygen vacancies for reactive oxygen species generation in the dark10.1021/acsami.6b16856 ↗
13. Fewer defects in the surface slows the hydrolysis rate, decreases the ROS generation potential, and improves the non-ROS antimicrobial activity of MgO
14. Sol-gel preparation and antibacterial properties of Li-doped MgO nanoplates10.1016/j.ceramint.2014.06.035 ↗
15. Highly effective antibacterial activity and synergistic effect of Ag-MgO nanocomposite against Escherichia coli10.1016/j.jallcom.2016.05.179 ↗
16. Study of the microstructure and antibacterial properties of MgO with doped defects10.1142/S0219633618500189 ↗
17. Biogenic mediated Ag/ZnO nanocomposites for photocatalytic and antibacterial activities towards disinfection of water10.1016/j.jcis.2019.12.079 ↗
18. Phytoextract mediated ZnO/MgO nanocomposites for photocatalytic and antibacterial activities10.1016/j.jphotochem.2019.112049 ↗
19. Calcination-dependent surface defect variation and antibacterial activity of magnesium oxide nanoplates10.1002/slct.201904853 ↗
20. Facile fabrication of mesoporous MgO microspheres and their enhanced adsorption performance for phosphate from aqueous solutions10.1016/j.colsurfa.2010.11.050 ↗
21. Novel surfactant-free synthesis of MgO nanoflakes10.1016/j.jallcom.2009.04.129 ↗
22. Characterization of Li-doped MgO catalysts for oxidative coupling of methane by means of Mg K-edge XANES10.1021/jp000291y ↗
23. Activity enhancement of Li/MgO catalysts by lithium chloride as a lithium precursor for the oxidative coupling of methane10.1007/s11144-013-0600-3 ↗
24. Specific defect sites creation by doping MgO with lithium and titanium10.1016/S0169-4332(00)00908-9 ↗
25. The solid reaction of lithium hydride and lithium hydroxide in lithium hydride pellet under normal condition and the application of CO2 for long-time storage10.1016/j.apsusc.2018.04.024 ↗
26. Thermal stability of Li2O2 and Li2O for Li-Air batteries: in situ XRD and XPS studies10.1149/2.069306jes ↗
27. Identifying an O2 supply pathway in CO oxidation on Au/TiO2 (110): a density functional theory study on the intrinsic role of water10.1021/ja056801p ↗
28. The preparation and characterization of ZnO ultrafine particles10.1016/S0921-5093(01)01801-9 ↗
29. Catalytic decomposition of gaseous ozone over manganese dioxides with different crystal structures10.1016/j.apcatb.2016.02.055 ↗
30. Chiang · 1997
31. Single electron traps at the surface of polycrystalline MgO: assignment of the main trapping sites10.1021/jp044783c ↗
32. Effect of morphology and concentration on crossover between antioxidant and pro-oxidant activity of MgO nanostructures10.1021/acs.inorgchem.8b01938 ↗
33. Influence of different ions doping on the antibacterial properties of MgO nanopowders10.1016/j.apsusc.2013.08.001 ↗
34. Influence of copper doping on chlorine adsorption and antibacterial behavior of MgO prepared by co-precipitation method10.1016/j.materresbull.2014.10.067 ↗
35. I Highly effective antibacterial activity of lithium-dopedmagnesium oxide particles synthesized by the microwave-assisted hydrothermal route10.1016/j.powtec.2020.05.031 ↗
36. World Health Organization (WHO) · 2004