Immobilization of Organic and Inorganic Nanoparticles and Enzymes

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Biology and Medicines".

Deadline for manuscript submissions: closed (30 September 2020) | Viewed by 3711

Special Issue Editor

Special Issue Information

Dear Colleagues,

We would like to invite you to submit your work to this Special Issue of Nanomaterials on "Immobilization of Organic and Inorganic Nanoparticles and Enzymes". Nanomaterials with controllable chemical compositions and structures, large surface‐to‐volume ratios, various surface properties, and functionalities offer many opportunities for regulating the biological function of incorporated protein with interesting potential applications in catalysis, drug delivery, and biosensors. The recent combination of the disciplines of nanotechnology and biology has led to some very important theoretical and practical advances in both biology and nanoengineered materials. Bionanotechnology is an interdisciplinary area of research placed at the interface of chemistry, biology, materials science, engineering, and medicine and with applications in many technological fields. By far, immobilization of enzymes onto organic or inorganic nanomaterials, chemical conjugation of protein with synthetic polymers, in situ crosslinking of protein with polymers, and self‐assembly of protein with organic/inorganic components represent commonly used methods to prepare protein‐incorporated hybrid bionanomaterials. However, the design and synthesis of such hybrid bionanomaterials remains a challenge in terms of tailoring the structures of the bionanomaterials in response to their applications. The scope of this Special Issue on immobilization of nanoparticles and enzymes is not to focus only on biomedical applications that usually encompass the majority of the research in this field but also in the new advanced applications in all sectors, including materials, food, agriculture, energy, and the environment. In particular, the topics of interest include but are not limited to:

- Enzyme–organic/inorganic hybrid nanomaterials;
- Metal−organic frameworks (MOFs);
- Bioorganic and bioinorganic chemistry;
- Bionanotechnology in biocatalysis and drug delivery;
- Bioremediations applications;
- Nanobiosensors;
- Antimicrobial and antifouling applications;
- Applications in biotechnology, immunosensing and biomedical areas;
- Material engineering applications;
- Magnetic nanoparticle conjugates;
- Nanoparticle–protein conjugates as biolabels.

Dr. Andrea Zille
Guest Editor

Manuscript Submission Information

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Published Papers (1 paper)

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Research

15 pages, 10245 KiB  
Article
Effect of Dispersion Solvent on the Deposition of PVP-Silver Nanoparticles onto DBD Plasma-Treated Polyamide 6,6 Fabric and Its Antimicrobial Efficiency
by Ana I. Ribeiro, Martina Modic, Uros Cvelbar, Gheorghe Dinescu, Bogdana Mitu, Anton Nikiforov, Christophe Leys, Iryna Kuchakova, Mike De Vrieze, Helena P. Felgueiras, António P. Souto and Andrea Zille
Nanomaterials 2020, 10(4), 607; https://0-doi-org.brum.beds.ac.uk/10.3390/nano10040607 - 26 Mar 2020
Cited by 22 | Viewed by 3028
Abstract
Polyvinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs) dispersed in ethanol, water and water/alginate were used to functionalize untreated and dielectric barrier discharge (DBD) plasma-treated polyamide 6,6 fabric (PA66). The PVP-AgNPs dispersions were deposited onto PA66 by spray and exhaustion methods. The exhaustion method showed a higher [...] Read more.
Polyvinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs) dispersed in ethanol, water and water/alginate were used to functionalize untreated and dielectric barrier discharge (DBD) plasma-treated polyamide 6,6 fabric (PA66). The PVP-AgNPs dispersions were deposited onto PA66 by spray and exhaustion methods. The exhaustion method showed a higher amount of deposited AgNPs. Water and water-alginate dispersions presented similar results. Ethanol amphiphilic character showed more affinity to AgNPs and PA66 fabric, allowing better uniform surface distribution of nanoparticles. Antimicrobial effect in E. coli showed good results in all the samples obtained by exhaustion method but using spray method only the DBD plasma treated samples displayed antimicrobial activity (log reduction of 5). Despite the better distribution achieved using ethanol as a solvent, water dispersion samples with DBD plasma treatment displayed better antimicrobial activity against S. aureus bacteria in both exhaustion (log reduction of 1.9) and spray (methods log reduction of 1.6) due to the different oxidation states of PA66 surface interacting with PVP-AgNPs, as demonstrated by X-ray Photoelectron Spectroscopy (XPS) analysis. Spray method using the water-suspended PVP-AgNPs onto DBD plasma-treated samples is much faster, less agglomerating and uses 10 times less PVP-AgNPs dispersion than the exhaustion method to obtain an antimicrobial effect in both S. aureus and E. coli. Full article
(This article belongs to the Special Issue Immobilization of Organic and Inorganic Nanoparticles and Enzymes)
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