The adhesion ability and adaptability of bacteria, coupled with constant use the same bactericides, have made increase in diversity treatments against infections necessary. Nanotechnology has played an important role search for new ways to prevent treat infections, including metallic nanoparticles antibacterial properties. In this study, we worked on design a composite silver (AgNPS) embedded poly-epsilon-caprolactone nanofibers evaluated its antimicrobial properties various Gram-positive...

In this work the green synthesis of Fe3O4 nanoparticles by cynara cardunculus leaf extract is presented. This route offers a novel and eco-friendly alternative to obtaining iron oxides nanoparticles. Functional with potential catalytic applications, particularly for water remediation containing organic dyes were synthetized. The structural characterization carried out scanning electron microscopy (SEM), X-ray diffraction, techniques. Calculation crystallite size Williamson –Hall method...

The exceptional properties of the silver nanoparticles offer several applications in biomedicine field. development antibiotics which are clinically useful against bacteria and drug resistant microorganisms, it is one main approaches nanoparticles. However, necessary to develop environmentally friendly methods for their synthesis. In this sense, objective work focused on propose a simplified efficient green synthesis with proven antibacterial properties. route based use Melissa officinalis...

Drug-resistance infections have increased extremely quickly in the past years, emerging as a serious health problem world. Novel and better antimicrobial agents are still being developed to control associated microorganisms. However, this represents great challenge for agents. The aim of study was prepare characterize polycaprolactone nanofibers containing silver nanoparticles evaluate their properties against various Gram-positive negative microorganisms with drug-resistance infections....

Antibiotic resistance by bacteria has continued to prompt research for new agents that can inhibit bacterial growth. Therefore, in this study, we described the synthesis, physicochemical characterization, and antibacterial activity of pure metal oxide nanoparticles ZrO2 ZnO their mixed ZrO2–ZnO against three Gram-positive Bacillus subtilis, Streptococcus mutans, Staphylococcus aureus, 3 Gram-negative Escherichia coli, Pseudomonas aeruginosa, Klebsiella oxytoca. The were successfully prepared...

The present study reports the green synthesis of silver nanoparticles (AgNP's) using Cynara cardunculus leaf extract in aqueous media. ions reduction was carried out by antioxidant component presents cardunculus. Transmission electron micrographs revealed that synthesized AgNP's exhibits semi-spherical morphology and particle size less than 45 nm. energy dispersive X-ray analysis (EDS) spectrum presence silver. Complementary, solution exhibited an absorption peak at 435 nm, corresponding to...

The integration of metallic or ceramic nanoparticles in polymer matrices has improved the antimicrobial and antifungal behavior, resulting search for composites with increased bactericidal antimycotic properties. A polycaprolactone fibers copper oxide was prepared. Polycaprolactone-copper (PCL- CuONPs) were prepared into two major steps situ method: (a) Synthesis CuO particles, then (b) incorporation to electrospun process. first step is reduction Cu+2 ions by gallic acid...

Innovative and improved antimicrobial agents by nanotechnology are developed to control mitigation of resistant microorganisms. Nanoparticles metals or oxide be able toxic bacteria, demonstrating biocidal behaviors at low concentrations. The integration silver nanoparticles in ceramic matrices has enhanced the performance, resulting search for new composites with bactericidal properties. aim this study was prepare characterize hydroxyapatite-silver nanocomposite evaluate its properties...

Water pollution is a worldwide environmental and health problem that requires the development of sustainable, efficient, accessible technologies. Nanotechnology very attractive alternative in remediation processes due to multiple properties are conferred on material when it at nanometric scale. This present review focuses understanding structure–physicochemical properties–performance relationships silver nanoparticles, with objective guiding selection physicochemical promote greater...

This study explores cutting-edge and sustainable green methodologies technologies for the synthesis of functional nanomaterials, with a specific focus on removal water contaminants application kinetic adsorption models. Our research adopts conscientious approach to environmental stewardship by synergistically employing eco-friendly silver nanoparticles, synthesized using Justicia spicigera extract as biogenic reducing agent, in conjunction Mexican zeolite enhance contaminant remediation,...

A ceramic-metal composite was produced by using the sol−gel method and electrospinning technique to be used as an enhancement substrate for Raman spectroscopy. The precursors were tetraethyl orthosilicate, aluminum nitrate, zirconium, polyvinylpyrrolidone added electrospun nonwoven fibrous membranes. membranes sintered, decorated with silver nanoparticles. substrates made of fibers cylindric morphology average diameter approximately 190 nm, a smooth surface 9 nm spherical particles...

The fabrication of dense alumina fibers at low cost by sol-gel and electrospinning, using aluminum nitrate as precursor is reported. Polyvinyl pyrrolidone was used spinning polymer, while Pluronic 127 additive to achieve a porous structure. material characterized different stages thermal treatment SEM, EDS, FTIR, XRD, analyses. It observed that the increase in ratio related formation more stable retain their morphology after sintering 1600 °C. obtained from solution with high mole presented...

Chemical synthesis results in the most convenient route to produce ceramics particles. In this paper, of α-Al2O3 from aluminum cans is reported. Two approaches were considered for α-Al2O3, first proposed was precipitation chloride with NaOH producing hydroxide. The second methodology consist dissolving flakes glacial acetic acid acetate. XRD analysis demonstrate that alumina powders are obtained heat treatment acetate at relative low temperature (1100 °C), and 1180 °C when starting has...

Background and Objectives: Periodontal disease (PD) is a multifactorial oral regularly caused by bacterial biofilms. Silver nanoparticles (AgNP) have offered good antimicrobial activity; moreover, there no available scientific information related to their effects in biofilms from patients with PD. This study reports the bactericidal activity of AgNP against Materials Methods: two average particle sizes were prepared characterized. Sixty collected (30 subjects) without PD subjects). Minimal...

Antimicrobial agents have been developed for drug‐resistance infections, which rapidly increasing; however, the control of involved microorganisms is still a challenge. In this work, SNP with bovine serum albumin (BSA) and chitosan (CS) coatings were prepared an aqueous reduction method, characterized using dispersion light scattering, transmission electron microscopy, thermal analysis. Antibacterial activity was tested on seven oral nonoral bacteria by microdilution test scanning...

White spot lesions (WSLs) are very frequent alterations during orthodontic treatments causing demineralization of the dental enamel. Various have been developed to prevent WSLs; prevalence and incidence these remain significantly high. Although silver nanoparticles (AgNPs) demonstrated good inhibitory effects against several microorganisms, more studies about antiadherence activity on different appliance surfaces necessary. To determine effect AgNPs adhesion S. mutans brackets wires for...

Nanoparticles of metals can be toxic to bacteria, showing biocidal activities at low concentrations. Metal, oxide, or compounds based on copper are applied like antimicrobial agents. The capacity integration metallic nanoparticles in polymer matrices has improved the behavior, resulting search for composites with increased bactericidal properties. A polycaprolactone (PCL) film oxide (CuONPs) was prepared. Dynamic light scattering analysis showed sizes from 88 97 nm CuONPs. Scanning electron...

In view of the continuous resistance to antibacterial agents by bacteria and existing problems silver nanoparticles as an agent, this study reports on synthesis pure zirconium oxide, ZrO 2 -Ag O sol-gel method. The were analyzed tested for their activity against gram-positive Bacillus subtilis, Streptococcus mutans, Staphylococcus aureus, gram-negative Escherichia coli, Pseudomonas aeruginosa, Klebsiella oxytoca. X-ray diffraction showed monoclinic , cubic Ag O, peaks corresponding in mixed...

A facile strategy for the fabrication Fe3O4 nanostructures at room temperature and with well-defined morphology is proposed. In this methodology, iron precursors were reduced by sodium borohydride. Subsequently an oxidative etching process promotes formation of Fe2O3 nanostructures. Magnetic measurements revealed a superparamagnetic behavior material. The Zero-Field-Cooled (ZFC) Field-Cooled (FC) magnetization curves reveals that critical blocking 24 350 °C respectively. characterized using...

Thermal transformation of aluminum formate sol-gel to α-Al2O3 is reported. XRD and IR spectroscopy confirmed the presence precursor at 25 °C, showed hydroxide 200 °C. After calcinations, amorphous Al2O3 η-Al2O3 were present 400 °C 800 respectively. Coordination numbers chemical interactions determined b6y MAS nuclear magnetic resonance on different elements. 27Al NMR study that sol-gels contain 6-coordinated ions. Four, five six-coordinated species after calcinations The into was observed...

(1) Background: Streptococcus mutans (S. mutans) is the principal pathogen involved in formation of dental caries. Other systemic diseases have also been associated with specific S. serotypes (c, e, f, and k). Silver nanoparticles (SNP) demonstrated to good antibacterial effects against mutans; therefore, limited studies evaluated antimicrobial activity biofunctionalized SNP on serotypes. The purpose this work was prepare characterize coated using two different organic components evaluate...