Effective antimicrobial activity of ZnO and Yb-doped ZnO nanoparticles against Staphylococcus aureus and Escherichia coli.
TL;DR: In this article, the effect of the ytterbium doping content on the structural, morphological, optical and antimicrobial properties of Zn1-xYbxO nanoparticles was analyzed.
About: This article is published in Materials Science and Engineering: C.The article was published on 2021-03-02. It has received 23 citations till now. The article focuses on the topics: Ytterbium & Wurtzite crystal structure.
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TL;DR: In this article, the influence of lanthanide ions dopant on the structure-optical properties of ZnO is discussed and the performance of Ln-ZnO towards the degradation of organic pollutants is discussed encompassing both the materials properties and photocatalytic reaction conditions under UV/visible and solar light.
22 citations
TL;DR: In this article , structural and morphological modifications leading to alternation of magneto-optical properties as well as antimicrobial activities of doped ZnO NPs were investigated.
14 citations
TL;DR: In this paper, a thiostannate possessing a three-dimensional porous framework, K2Sn2S5 (KTS-2), was chosen as an ion exchange material for capturing rare-earth elements (REEs) from an aqueous solution.
Abstract: Rare-earth elements (REEs) in industrial wastewaters have great value for recycling and reuse, but their characteristic of low concentration poses a challenge to an efficient enrichment from wastewaters. In recent years, thiometallates featuring two-dimensional layers have shown great potential in the enrichment of REEs via the ion-exchange process. However, investigations on thiometallates featuring three-dimensional anionic frameworks for the recovery of REEs have not been reported. Herein, K2Sn2S5 (KTS-2), a thiostannate possessing a three-dimensional porous framework, was chosen as an ion-exchange material for capturing REEs from an aqueous solution. Indeed, KTS-2 exhibited excellent ion-exchange performance for all 16 REEs (except Pm). Specifically, KTS-2 displayed a high capture capacity (232.7 ± 7.8 mg/g) and a short equilibrium time (within 10 min) for Yb3+ ions. In addition, KTS-2 had a high distribution coefficient for Yb3+ ions (Kd > 105 mL/g) in the presence of excessive interfering ions. Impressively, KTS-2 could reach removal rates of above 95% for all 16 REEs in a large quantity of wastewater with low initial concentration (∼7 mg/L). Moreover, KTS-2 could be used as an eco-friendly material for ion exchange of REEs, since the released K+ cations would not cause secondary pollution to the water solution.
10 citations
TL;DR: In this article , the influence of erbium content in structural, optical, and antimicrobial activity of Zn1-xErxO (0, 1, 5, 10 at%) nanoparticles was analyzed.
8 citations
TL;DR: In this paper , Zn1-x(Co, Fe, XO)xO nanoparticles (NPs) were synthesized by sol-gel combustion method and XRD pattern confirmed the formation of single-phase hexagonal (wurtzite) structure in all samples with P63mc space group.
Abstract: Zn1-x(Co, Fe)xO nanoparticles (NPs) were synthesized by sol-gel combustion method. XRD pattern confirmed the formation of single-phase hexagonal (wurtzite) structure in all samples with P63mc space group. The average crystallite sizes varied between 20 and 28 nm. All samples were optically activated under ultraviolet light. The optical band gap values varied between 3.33 and 3.82 eV. The PL study revealed the reduction of the recombination of charge carriers due to (Co, Fe) co-doping into ZnO. Enhancement of the antibacterial activity was observed due to (Co, Fe) co-doping. Zn0.95Co0.025Fe0.025 NPs exhibited excellent antibacterial activity against E. coli and S. aureus bacteria.
8 citations
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TL;DR: Mise au point comportant des definitions generales et la terminologie, la methodologie utilisee, les procedes experimentaux, les interpretations des donnees d'adsorption, les determinations de l'aire superficielle, and les donnes sur la mesoporosite et la microporosite.
Abstract: Mise au point comportant des definitions generales et la terminologie, la methodologie utilisee, les procedes experimentaux, les interpretations des donnees d'adsorption, les determinations de l'aire superficielle, et les donnees sur la mesoporosite et la microporosite
20,347 citations
TL;DR: The biochemistry of ROS and their production sites, and ROS scavenging antioxidant defense machinery are described, which protects plants against oxidative stress damages.
8,259 citations
TL;DR: This review comprehensively covers the epidemiology, pathophysiology, clinical manifestations, and management of S. aureus as a leading cause of bacteremia and infective endocarditis as well as osteoarticular, skin and soft tissue, pleuropulmonary, and device-related infections.
Abstract: Staphylococcus aureus is a major human pathogen that causes a wide range of clinical infections. It is a leading cause of bacteremia and infective endocarditis as well as osteoarticular, skin and soft tissue, pleuropulmonary, and device-related infections. This review comprehensively covers the epidemiology, pathophysiology, clinical manifestations, and management of each of these clinical entities. The past 2 decades have witnessed two clear shifts in the epidemiology of S. aureus infections: first, a growing number of health care-associated infections, particularly seen in infective endocarditis and prosthetic device infections, and second, an epidemic of community-associated skin and soft tissue infections driven by strains with certain virulence factors and resistance to β-lactam antibiotics. In reviewing the literature to support management strategies for these clinical manifestations, we also highlight the paucity of high-quality evidence for many key clinical questions.
3,054 citations
TL;DR: In this paper, the authors present an overview of the current knowledge of the determinants (both human and bacterial) and risks of S aureus nasal carriage, and summarise the population dynamics of SA.
Abstract: Staphylococcus aureus is a frequent cause of infections in both the community and hospital. Worldwide, the increasing resistance of this pathogen to various antibiotics complicates treatment of S aureus infections. Effective measures to prevent S aureus infections are therefore urgently needed. It has been shown that nasal carriers of S aureus have an increased risk of acquiring an infection with this pathogen. The nose is the main ecological niche where S aureus resides in human beings, but the determinants of the carrier state are incompletely understood. Eradication of S aureus from nasal carriers prevents infection in specific patient categories-eg, haemodialysis and general surgery patients. However, recent randomised clinical trials in orthopaedic and non-surgical patients failed to show the efficacy of eliminating S aureus from the nose to prevent subsequent infection. Thus we must elucidate the mechanisms behind S aureus nasal carriage and infection to be able to develop new preventive strategies. We present an overview of the current knowledge of the determinants (both human and bacterial) and risks of S aureus nasal carriage. Studies on the population dynamics of S aureus are also summarised.
2,280 citations
TL;DR: In this paper, the authors used the Williamson-Hall analysis and size-strain plot method to study the individual contributions of crystallite sizes and lattice strain on the peak broadening of ZnO-NPs.
1,784 citations