Synthesis, photocatalytic and antibacterial activities of a PDS-activated MgO nanocatalyst: experimental and theoretical studies

Sikdar, Suranjan; Banu, A. Afroos; Chakraborty, Shohini; Baildya, Nabajyoti; Majumdar, Sukanta

doi:10.1039/d1nj05195d

Cited by 4 publications

(2 citation statements)

References 92 publications

(112 reference statements)

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“…The band gap of a pure MgO NP is smaller than that of the bulk one, e.g., for d = 20 nm it is calculated to be 5.15 eV (see inset in Figure 7 ). A similar decrease of

in MgO nanostructures is observed in [ 18 , 61 , 62 , 63 , 64 , 65 , 66 ]. The results for Co or Fe ion-doped MgO NPs are presented in Figure 7 , curves 1 and 2.…”

Section: Numerical Results and Discussionsupporting

confidence: 77%

Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia

2023

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The influence of size and doping effects on the magnetization M, phonon ω and band gap energy Eg of MgO nanoparticles is studied using a microscopic model. The room-temperature ferromagnetism is due to surface or/and doping effects in MgO nanoparticles (NPs). The influence of the spin–phonon interaction is discussed. M increases with decreasing NP size. M and Eg can increase or decrease by different ion doping (Co, Al, La, Fe) due to the different strain that appears. It changes the lattice parameters and the exchange interaction constants. We found that MgO NP with size of 20 nm and Fe- or Co-doping concentration x = 0.1 and x = 0.2, respectively, have a Curie temperature TC = 315 K, i.e., they are appropriate for application in magnetic hyperthermia, they satisfy the conditions for that. The energy of the phonon mode ω = 448 cm−1 increases with decreasing NP size. It increases with increasing Co and Fe, or decreases with Sr ion doping.

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“…The band gap of a pure MgO NP is smaller than that of the bulk one, e.g., for d = 20 nm it is calculated to be 5.15 eV (see inset in Figure 7 ). A similar decrease of

in MgO nanostructures is observed in [ 18 , 61 , 62 , 63 , 64 , 65 , 66 ]. The results for Co or Fe ion-doped MgO NPs are presented in Figure 7 , curves 1 and 2.…”

Section: Numerical Results and Discussionsupporting

confidence: 77%

Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia

2023

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“…Due to the morphology- and structure-dependent photocatalytic properties of PCAMs, the characterization of crystal structures, electronic structures, and antimicrobial performance of PCAMs during the PCAT process is crucial for understanding their working mechanism and providing guidelines for PCAMs synthesis. − In this section, we will focus on the characterization techniques used in studies of the physical, chemical, band structure, and antimicrobial performance of PCAMs (Table ). It is hoped to provide a perspective for understanding PCAT and provide inspiration for developing new PCAMs with superior performance.…”

Section: Characterization Techniques Of Photocatalytic Antimicrobials...mentioning

confidence: 99%

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Ran,

Wang

et al. 2023

Chem. Rev.

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Nowadays, the increasing emergence of antibiotic-resistant pathogenic microorganisms requires the search for alternative methods that do not cause drug resistance. Phototherapy strategies (PTs) based on the photoresponsive materials have become a new trend in the inactivation of pathogenic microorganisms due to their spatiotemporal controllability and negligible side effects. Among those phototherapy strategies, photocatalytic antimicrobial therapy (PCAT) has emerged as an effective and promising antimicrobial strategy in recent years. In the process of photocatalytic treatment, photocatalytic materials are excited by different wavelengths of lights to produce reactive oxygen species (ROS) or other toxic species for the killing of various pathogenic microbes, such as bacteria, viruses, fungi, parasites, and algae. Therefore, this review timely summarizes the latest progress in the PCAT field, with emphasis on the development of various photocatalytic antimicrobials (PCAMs), the underlying antimicrobial mechanisms, the design strategies, and the multiple practical antimicrobial applications in local infections therapy, personal protective equipment, water purification, antimicrobial coatings, wound dressings, food safety, antibacterial textiles, and air purification. Meanwhile, we also present the challenges and perspectives of widespread practical implementation of PCAT as antimicrobial therapeutics. We hope that as a result of this review, PCAT will flourish and become an effective weapon against pathogenic microorganisms and antibiotic resistance.

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Research on synthesis and property of nano-textured Sc2O3-MgO efficient antibacterial agents

Wang

Liu

et al. 2023

J Biol Inorg Chem

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Synthesis, photocatalytic and antibacterial activities of a PDS-activated MgO nanocatalyst: experimental and theoretical studies

Abstract: MgO nanoparticles were successfully synthesized by using Azadirachta Indica leaves extract and Magnesium sulphate dihydrate via green method followed by calcination of the resulting product of the precursor. Average crystallite...

Cited by 4 publications

References 92 publications

Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia

Magnetic, Optical and Phonon Properties of Ion-Doped MgO Nanoparticles. Application for Magnetic Hyperthermia

Photocatalytic Antimicrobials: Principles, Design Strategies, and Applications

Research on synthesis and property of nano-textured Sc2O3-MgO efficient antibacterial agents

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