Functional Materials based on Nanoparticle Modified Polypropylene Fibers

Background: The formation and modification of the surface of polypropylene fibers provides a versatile material for a variety of applications. Objective: This research examines the production of new materials by pneumatic spraying of a polypropylene melt jet, on the surface of which metal and metal oxide nanoparticles are prepared using the sol-gel technique and photoreduction followed by ultra-high frequency processing. We used the obtained materials to remove Bisphenol A in the photoreactor. Method: Based on an analysis of the obtained values of the numerical characteristics in the spray zone and the physical essence of the criteria under consideration, a mechanism for the destruction of the melt jet from the formation of a fiber-forming system is proposed. Analysis of the degradation of Bisphenol A was carried out by electron spectroscopy and fluorescence. Results: A composite active layer, “polymer – inorganic nanoparticles”, on the surface of polypropylene fibers has been demonstrated to create new photocatalytic materials. Bisphenol A in water was examined as a toxicant. Conclusion: Based on the analysis of the obtained values of the numerical characteristics in the spray zone and the physical essence of the considered criteria, it was found that the pressure drop in the nozzle, the nozzle critical section area, and the rheological properties of the melt are dominating factors in the influence on the morphology and size of the ultra-fine fibers obtained by pneumatic spraying. It was determined that materials based on a polypropylene carrier with the largest diameter of 6.71 μm have the best sorption capacity for Bisphenol A. A decrease in the concentration of bisphenol A in water by more than two times in 30 minutes of UV irradiation in the presence of polypropylene was achieved without additional injection of oxidants.

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Application of Nanosols in Textile Industry

International Journal of Green Nanotechnology ◽

10.1177/1943089213506814 ◽

2013 ◽

Vol 1 ◽

pp. 194308921350681 ◽

Cited By ~ 3

Author(s):

Amirhosein Berendjchi ◽

Ramin Khajavi ◽

Mohammad Esmaeil Yazdanshenas

Keyword(s):

Titanium Dioxide ◽

Metal Oxide ◽

Textile Industry ◽

Metal Oxide Nanoparticles ◽

Sol Gel ◽

Inorganic Nanoparticles ◽

Oxide Nanoparticles ◽

Oxide Coatings ◽

Metallic Oxide ◽

Sol Gel Process

Inorganic metal oxide nanoparticles are mainly synthesized by sol–gel process. The most important beneficial advantage of mentioned process is facile and the time-consuming route. The resultant meta-stable synthesized inorganic nanoparticles can easily modify different substrates and alter their performance. The presented review investigates the possible applications of nanosols (especially silica and titanium dioxide sols) in the field of textile industry, including the formation of hydrophobic, bioactive or protective metallic oxide coatings on textiles by physical or chemical modifying of nanosols.

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Inorganic Nanoparticles for Electrochemical Applications Synthesized Using Supercritical Carbon Dioxide

INEOS OPEN ◽

10.32931/io2021r ◽

2020 ◽

Vol 3 ◽

Author(s):

I. V. Elmanovich ◽

◽

Keyword(s):

Carbon Dioxide ◽

Supercritical Carbon Dioxide ◽

Metal Oxide Nanoparticles ◽

Functional Materials ◽

Polymer Electrolyte Membranes ◽

Inorganic Nanoparticles ◽

Electrochemical Applications ◽

Electrolyte Membranes ◽

Supported Metal Nanoparticles ◽

Supercritical Carbon

The review briefly outlines some of the main areas of using supercritical carbon dioxide in the synthesis and modification of functional materials for electrochemical applications. The synthesis of supported metal nanoparticles as well as metal oxide nanoparticles/aerogels and modification of polymer electrolyte membranes are considered. This work attempts to highlight the key benefits associated with the supercritical state of the solvent specifically for every listed application.

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Preparation and Deposition of Hydroxyapatite on Biomaterials by Sol-Gel Technique-A Review

Chitkara Chemistry Review ◽

10.15415/ccr.2013.12011 ◽

2013 ◽

Vol 1 (2) ◽

pp. 59-69 ◽

Cited By ~ 6

Author(s):

Sarbjit Kaur ◽

Niraj Bala ◽

Charu Khosla

Keyword(s):

Sol Gel ◽

Gel Technique

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Sol - Gel Technique Applied for Biomaterials Achievement

Recent Patents on Materials Science ◽

10.2174/1874464811104030224 ◽

2011 ◽

Vol 4 (3) ◽

pp. 224-237 ◽

Cited By ~ 3

Author(s):

Aurica P. Chiriac ◽

Loredana E. Nita ◽

Iordana Neamtu ◽

Manuela T. Nistor

Keyword(s):

Sol Gel ◽

Gel Technique

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Structural and thermal properties of monolithic silica–phosphate (SiO2–P2O5) gel glasses prepared by sol–gel technique

Journal of Sol-Gel Science and Technology ◽

10.1007/s10971-011-2420-0 ◽

2011 ◽

Vol 58 (2) ◽

pp. 507-517 ◽

Cited By ~ 14

Author(s):

M. Kamal ◽

I. K. Battisha ◽

M. A. Salem ◽

A. M. S. El Nahrawy

Keyword(s):

Thermal Properties ◽

Sol Gel ◽

Monolithic Silica ◽

Gel Technique ◽

Gel Glasses

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Yttrium Oxide Nanoparticle Synthesis: An Overview of Methods of Preparation and Biomedical Applications

Applied Sciences ◽

10.3390/app11052172 ◽

2021 ◽

Vol 11 (5) ◽

pp. 2172

Author(s):

Govindasamy Rajakumar ◽

Lebao Mao ◽

Ting Bao ◽

Wei Wen ◽

Shengfu Wang ◽

...

Keyword(s):

Yttrium Oxide ◽

Metal Oxide Nanoparticles ◽

Sol Gel ◽

Antioxidant Properties ◽

Nanoparticle Synthesis ◽

Synthetic Methods ◽

Host Material ◽

Solid State Reactions ◽

Oxide Nanoparticles ◽

Advantages And Disadvantages

Metal oxide nanoparticles demonstrate uniqueness in various technical applications due to their suitable physiochemical properties. In particular, yttrium oxide (Y2O3) nanoparticle is familiar for technical applications because of its higher dielectric constant and thermal stability. It is widely used as a host material for a variety of rare-earth dopants, biological imaging, and photodynamic therapies. Y2O3 has also been used as a polarizer, phosphor, laser host material, and in the optoelectronic fields for cancer therapy, biosensor, and bioimaging. Yttrium oxide nanoparticles have attractive antibacterial and antioxidant properties. This review focuses on the promising applications of Y2O3, its drawbacks, and its modifications. The synthetic methods of nanoparticles, such as sol-gel, emulsion, chemical methods, solid-state reactions, combustion, colloid reaction techniques, and hydrothermal processing, are recapitulated. Herein, we also discuss the advantages and disadvantages of Y2O3 NPs based biosensors that function through various detection modes including colorimetric, electrochemistry, and chemo luminescent regarding the detection of small organic chemicals, metal ions, and biomarkers.

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Effect of alkali metal (Na, K) ion ratio on structural, optical and photoluminescence properties of K0.5Na0.5NbO3 ceramics prepared by sol–gel technique

Bulletin of Materials Science ◽

10.1007/s12034-020-02341-x ◽

2021 ◽

Vol 44 (1) ◽

Author(s):

SHAMMI KUMAR ◽

NAGESH THAKUR

Keyword(s):

Alkali Metal ◽

Sol Gel ◽

Photoluminescence Properties ◽

Gel Technique

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Tailoring Mesoporous Titania Features by Ultrasound-Assisted Sol-Gel Technique: Effect of Surfactant/Titania Precursor Weight Ratio

Nanomaterials ◽

10.3390/nano11051263 ◽

2021 ◽

Vol 11 (5) ◽

pp. 1263

Author(s):

Elvira Mahu ◽

Cristina Giorgiana Coromelci ◽

Doina Lutic ◽

Iuliean Vasile Asaftei ◽

Liviu Sacarescu ◽

...

Keyword(s):

Photocatalytic Activity ◽

Sol Gel ◽

Weight Ratio ◽

Soft Template ◽

Synthesis Process ◽

Mesoporous Titania ◽

Cavitation Effect ◽

Titania Precursor ◽

Gel Technique ◽

Ultrasound Assisted

A mesoporous titania structure has been prepared using the ultrasound-assisted sol-gel technique in order to find out a way to tailor its structure. The TiO2 obtained was compared to the same version of titania but synthesized by a conventional sol-gel method with the objective of understanding the effect of ultrasound in the synthesis process. All synthesis experiments were focused on the preparation of a titania photocatalyst. Thus, the anatase photocatalytic active phase of titania was proven by X-ray diffraction. Additionally, the ultrasonation treatment proved to increase the crystallinity of titania samples, being one of the requirements to having good photocatalytic activity for titania. The influence of surfactant/titania precursor weight ratio on the structural (XRD), textural (N2-sorption measurements), morphological (TEM), surface chemistry (FTIR) and optical properties (UVDR) was investigated. It was observed that the crystallite size, specific surface area, band gap energy and even photocatalytic activity was affected by the synergism occurring between cavitation effect and the surfactant/titania precursor weight ratio. The study yielded interesting great results that could be considered for further application of ultrasound to tailor mesoporous titania features via sol-gel soft template synthesis, against conventional sol-gel process.

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Elucidation of the Crystal Growth Characteristics of SnO2 Nanoaggregates Formed by Sequential Low-Temperature Sol-Gel Reaction and Freeze Drying

Nanomaterials ◽

10.3390/nano11071738 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1738

Author(s):

Saeid Vafaei ◽

Alexander Wolosz ◽

Catlin Ethridge ◽

Udo Schnupf ◽

Nagisa Hattori ◽

...

Keyword(s):

Crystal Growth ◽

Low Temperature ◽

Photoelectron Spectroscopy ◽

High Performance ◽

Freeze Drying ◽

Sno2 Nanoparticles ◽

Sol Gel ◽

Functional Materials ◽

Cost Effective ◽

High Concentration

SnO2 nanoparticles are regarded as attractive, functional materials because of their versatile applications. SnO2 nanoaggregates with single-nanometer-scale lumpy surfaces provide opportunities to enhance hetero-material interfacial areas, leading to the performance improvement of materials and devices. For the first time, we demonstrate that SnO2 nanoaggregates with oxygen vacancies can be produced by a simple, low-temperature sol-gel approach combined with freeze-drying. We characterize the initiation of the low-temperature crystal growth of the obtained SnO2 nanoaggregates using high-resolution transmission electron microscopy (HRTEM). The results indicate that Sn (II) hydroxide precursors are converted into submicrometer-scale nanoaggregates consisting of uniform SnO2 spherical nanocrystals (2~5 nm in size). As the sol-gel reaction time increases, further crystallization is observed through the neighboring particles in a confined part of the aggregates, while the specific surface areas of the SnO2 samples increase concomitantly. In addition, X-ray photoelectron spectroscopy (XPS) measurements suggest that Sn (II) ions exist in the SnO2 samples when the reactions are stopped after a short time or when a relatively high concentration of Sn (II) is involved in the corresponding sol-gel reactions. Understanding this low-temperature growth of 3D SnO2 will provide new avenues for developing and producing high-performance, photofunctional nanomaterials via a cost-effective and scalable method.

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