scholarly journals Nanocellulose Hybrids with Metal Oxides Nanoparticles for Biomedical Applications

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4045 ◽  
Author(s):  
Madalina Oprea ◽  
Denis Mihaela Panaitescu
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Biomedical Applications ◽  
Metal Oxide Nanoparticles ◽  
Antibacterial Properties ◽  
Ex Situ ◽  
Current Status ◽  
Polymer Support ◽  
Synthesis Methods ◽  
Preparation Methods

Cellulose is one of the most affordable, sustainable and renewable resources, and has attracted much attention especially in the form of nanocellulose. Bacterial cellulose, cellulose nanocrystals or nanofibers may serve as a polymer support to enhance the effectiveness of metal nanoparticles. The resultant hybrids are valuable materials for biomedical applications due to the novel optical, electronic, magnetic and antibacterial properties. In the present review, the preparation methods, properties and application of nanocellulose hybrids with different metal oxides nanoparticles such as zinc oxide, titanium dioxide, copper oxide, magnesium oxide or magnetite are thoroughly discussed. Nanocellulose-metal oxides antibacterial formulations are preferred to antibiotics due to the lack of microbial resistance, which is the main cause for the antibiotics failure to cure infections. Metal oxide nanoparticles may be separately synthesized and added to nanocellulose (ex situ processes) or they can be synthesized using nanocellulose as a template (in situ processes). In the latter case, the precursor is trapped inside the nanocellulose network and then reduced to the metal oxide. The influence of the synthesis methods and conditions on the thermal and mechanical properties, along with the bactericidal and cytotoxicity responses of nanocellulose-metal oxides hybrids were mainly analyzed in this review. The current status of research in the field and future perspectives were also signaled.

A Review on Antimicrobial Properties of Metal Nanoparticles

2020 ◽  
Vol 20 (6) ◽  
pp. 3303-3339 ◽  
Author(s):  
Saee Gharpure ◽  
Aman Akash ◽  
Balaprasad Ankamwar
Keyword(s):  
Titanium Dioxide ◽  
Metal Oxide ◽  
Biomedical Applications ◽  
Antimicrobial Agents ◽  
Metal Oxide Nanoparticles ◽  
Antimicrobial Properties ◽  
Multidrug Resistant ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Micro Organisms

The field of nanotechnology elaborates the synthesis, characterization as well as application of nanomaterials. Applications of nanoparticles in various fields have interested scientists since decades due to its unique properties. Combination of pharmacology with nanotechnology has helped in development of newer antimicrobial agents in order to control the ever increasing multidrug resistant micro-organisms. Properties of metal and metal oxide nanoparticles like silver, gold, titanium dioxide as well as magnesium oxide as antimicrobial agents are very well known. This review elaborates synthesis methods and antimicrobial mechanisms of various metal as well as metal oxide nanoparticles for better understanding in order to utilize their potentials in various biomedical applications.

scholarly journals A comprehensive review on green synthesis of titanium dioxide nanoparticles and their diverse biomedical applications

2022 ◽  
Vol 11 (1) ◽  
pp. 44-63
Author(s):  
Suresh Sagadevan ◽  
Shahla Imteyaz ◽  
Baranya Murugan ◽  
Jayasingh Anita Lett ◽  
Nanthini Sridewi ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Metal Oxide ◽  
Biomedical Applications ◽  
Titanium Dioxide Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Cost Effective ◽  
Biological Synthesis ◽  
Synthesis Methods ◽  
Environmental Friendliness ◽  
Environmentally Safe

Abstract Metal oxide nanoparticles (NPs) have found a variety of applications in numerous industrial, medical, and environmental fields s, attributable to recent advances in the nanotechnology field. Titanium dioxide nanoparticles (TiO2-NPs) have gained importance as metal oxide NPs due to their potential in various fields, particularly nanomedicine and other biomedicine fields. Several studies have confirmed that NPs produced via the biosynthesis route using natural resources have significant advantages such as fewer toxic contaminants, less subsequent complex chemical synthesis, environmental friendliness, cost-effectiveness, and stability when compared to NPs produced by conventional methods, and its production with controlled shapes and sizes. Therefore, considerable effort is being expended to implement biological synthesis methods with these proven advantages. TiO2-NPs can be made using a variety of biological, chemical, and physical methods. Physicochemical methods are costly, emit high levels of toxic chemicals into the atmosphere, and consume a lot of energy. On the other hand, the biological approach is an environmentally safe, cost-effective, dependable, convenient, and easy way to synthesize TiO2-NPs. In this review, the bio-mediated synthesis, as well as various biomedical applications of TiO2-NPs, were discussed.

Pharmaceutical and Biomedical Applications of Green Synthesized Metal and Metal Oxide Nanoparticles

2020 ◽  
Vol 26 (45) ◽  
pp. 5844-5865
Author(s):  
Nabila Zafar ◽  
Ahmed Madni ◽  
Ayesha Khalid ◽  
Taous Khan ◽  
Rozina Kousar ◽  
...  
Keyword(s):  
Side Effects ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Biomedical Applications ◽  
Metal Oxide Nanoparticles ◽  
Biological Properties ◽  
Oxide Nanoparticles ◽  
Green Protocol ◽  
Biological Sources ◽  
Synthesis Of Nanomaterials

Background: Due to the rapid growth in life threatening diseases such as cancer, diabetes, chronic wound and HIV/AIDS along with rise of side effects of the current treatments, world is now focusing to utilize new treatment options. Currently, the development of green nanotechnology field seems as a potential alternate for diseases diagnosis and treatment by preparation of various sizes and shapes of nanomaterials. Objective: This review is to present the explored biological sources in synthesis of nanomaterials particularly metal and metal oxides nanoparticles and critical review of the applications of biosynthesized nanoparticles in pharmaceutical and biomedical fields. Methods: In this review, the various biological sources including bacteria, fungi, algae and plants used in synthesis of nanomaterials and mechanism involved in preparation are elaborated. In addition, biosynthesized nanomaterials applied as drug delivery system for anticancer, antibiotic, antidiabetic agent and functioned as potential diagnostic, antimicrobial, anticancer and wound healing candidates are comprehensively reviewed. Results: The synthesized metal and metal oxides from green protocol proved to have advantages such as being biocompatible, effective and cheap. Furthermore, the green synthesized metal and metal oxide nanoparticles showed to possess prominent physical, chemical and biological properties that can be efficiently utilized for pharmaceutical and biomedical applications. Conclusion: The information gathered in this review will provide a baseline for exploring more potential usage of green synthesized metal and metal oxide nanomaterials for various other applications. However, a concrete understanding of the safety of these nanomaterials is still needed to minimize the potential side effects.

Surface coating and functionalization of metal and metal oxide nanoparticles for biomedical applications

2022 ◽  
pp. 205-231
Author(s):  
Raj Kumar ◽  
Guruprasad Reddy Pulikanti ◽  
Konathala Ravi Shankar ◽  
Darsi Rambabu ◽  
Venkateswarulu Mangili ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Surface Coating ◽  
Biomedical Applications ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles

Synthesis and Antimicrobial Properties of Zinc Oxide Nanoparticles

2020 ◽  
Vol 20 (10) ◽  
pp. 5977-5996 ◽  
Author(s):  
Saee Gharpure ◽  
Balaprasad Ankamwar
Keyword(s):  
Zinc Oxide ◽  
Zno Nanoparticles ◽  
Zinc Oxide Nanoparticles ◽  
Metal Oxide Nanoparticles ◽  
Antibacterial Properties ◽  
Antimicrobial Properties ◽  
Physical Contact ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Promising Alternative

With increase in incidence of multidrug resistant pathogens, there is a demand to adapt newer approaches in order to combat these diseases as traditional therapy is insufficient for their treatment. Use of nanotechnology provides a promising alternative as antimicrobial agents as against traditional antibiotics. Metal oxides have been exploited for a long times for their antimicrobial properties. Zinc oxide nanoparticles (ZnO NPs) are preferred over other metal oxide nanoparticles because of their bio-compatible nature and excellent antibacterial potentials. The basic mechanism of bactericidal nature of ZnO nanoparticles includes physical contact between ZnO nanoparticles and the bacterial cell wall, generation of reactive oxygen species (ROS) as well as free radicals and release of Zn2+ ions. This review focuses on different synthesis methods of ZnO nanoparticles, various analytical techniques frequently used for testing antibacterial properties, mechanism explaining antibacterial nature of ZnO nanoparticles as well as different factors affecting the antibacterial properties.

scholarly journals Biocompatible Metal-Oxide Nanoparticles: Nanotechnology Improvement of Conventional Prosthetic Acrylic Resins

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Laura S. Acosta-Torres ◽  
Luz M. López-Marín ◽  
R. Elvira Núñez-Anita ◽  
Genoveva Hernández-Padrón ◽  
Victor M. Castaño
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Suspension Polymerization ◽  
Metal Oxide Nanoparticles ◽  
Physicochemical Characterization ◽  
Dental Restoration ◽  
Oxide Nanoparticles ◽  
Dental Resins ◽  
Acrylic Resins

Nowadays, most products for dental restoration are produced from acrylic resins based on heat-cured Poly(Methyl MethAcrylate) (PMMA). The addition of metal nanoparticles to organic materials is known to increase the surface hydrophobicity and to reduce adherence to biomolecules. This paper describes the use of nanostructured materials, TiO2and Fe2O3, for simultaneously coloring and/or improving the antimicrobial properties of PMMA resins. Nanoparticles of metal oxides were included during suspension polymerization to produce hybrid metal oxides-alginate-containing PMMA. Metal oxide nanoparticles were characterized by dynamic light scattering, and X-ray diffraction. Physicochemical characterization of synthesized resins was assessed by a combination of spectroscopy, scanning electron microscopy, viscometry, porosity, and mechanical tests. Adherence ofCandida albicanscells and cellular compatibility assays were performed to explore biocompatibility and microbial adhesion of standard and novel materials. Our results show that introduction of biocompatible metal nanoparticles is a suitable means for the improvement of conventional acrylic dental resins.

scholarly journals Mechanochemical synthesis of metal oxide nanoparticles

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Takuya Tsuzuki
Keyword(s):  
Metal Oxide ◽  
Mechanochemical Synthesis ◽  
Large Scale ◽  
Reaction Pathway ◽  
Metal Oxide Nanoparticles ◽  
Energy Storage And Conversion ◽  
Oxide Nanoparticles ◽  
Synthesis Methods ◽  
Scale Production ◽  
Large Scale Production

AbstractIn the last decades, mechanochemical processing has emerged as a sustainable method for the large-scale production of a variety of nanomaterials. In particular, mechanochemical synthesis can afford well-dispersed metal-oxide nanoparticles, which are used in wide-ranging applications including energy storage and conversion, environmental monitoring, or biomedical uses. This article reviews recent progress in the mechanochemical synthesis of metal-oxide nanoparticles, explores reaction mechanisms, and contrasts the influence of chosen process parameters on the properties of end products. The role of choice of reaction pathway, as well as advantages and limitations compared to other synthesis methods are discussed. A prospect for future development of this synthetic method is proposed.

scholarly journals Cobalt-Containing Nanoporous Nitrogen-Doped Carbon Nanocuboids from Zeolite Imidazole Frameworks for Supercapacitors

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1110 ◽  
Author(s):  
Yu Song ◽  
Mingyue Zhang ◽  
Tianyu Liu ◽  
Tianjiao Li ◽  
Di Guo ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Metal Oxide Nanoparticles ◽  
Negative Electrode ◽  
Cobalt Metal ◽  
Energy Storage Devices ◽  
Nitrogen Doped ◽  
Metal Metal ◽  
The Rich ◽  
Nitrogen Doped Carbon

Pyrolyzing metal–organic frameworks (MOFs) typically yield composites consisting of metal/metal oxide nanoparticles finely dispersed on carbon matrices. The blend of pseudocapacitive metal oxides and conductive metals, as well as highly porous carbon networks, offer unique opportunities to obtain supercapacitor electrodes with mutually high capacitances and excellent rate capabilities. Herein, we demonstrate nitrogen-doped carbon nanocuboid arrays grown on carbon fibers and incorporating cobalt metal and cobalt metal oxides. This composite was synthesized via pyrolysis of a chemical bath deposited MOF, cobalt-containing zeolite imidazole framework (Co–ZIF). The active materials for charge storage are the cobalt oxide and nitrogen-doped carbon. Additionally, the Co metal and the nanoporous carbon network facilitated electron transport and the rich nanopores in each nanocuboid shortened ion diffusion distance. Benefited from these merits, our Co–ZIF-derived electrode delivered an areal capacitance of 1177 mF cm−2 and excellent cycling stability of ~94% capacitance retained after 20,000 continuous charge–discharge cycles. An asymmetric supercapacitor prototype having the Co–ZIF-derived hybrid material (positive electrode) and activated carbon (negative electrode) achieved a maximal volumetric energy density of 1.32 mWh cm−3 and the highest volumetric power density of 376 mW cm−3. This work highlights the promise of metal–metal oxide–carbon nanostructured composites as electrodes in electrochemical energy storage devices.

Metal Oxide Nanoparticles: Potential Uses in Biomedical Applications

2014 ◽  
Vol 11 (2) ◽  
pp. 139-149 ◽  
Author(s):  
Denisa Ficai ◽  
Ovidiu Oprea ◽  
Anton Ficai ◽  
Alina Holban
Keyword(s):  
Metal Oxide ◽  
Biomedical Applications ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles
Sign in / Sign up

Export Citation Format

Share Document