Sol-gel hot injection synthesis of ZnO nanoparticles into a porous silica matrix and reaction mechanism

Barhoum, Ahmed; Assche, Guy Van; Rahier, Hubert; Fleisch, Manuel; Bals, Sara; Delplancked, Marie-Paule; Leroux, Frédéric R.; Bahnemann, Detlef W.

doi:10.1016/j.matdes.2017.01.059

Cited by 47 publications

(21 citation statements)

References 35 publications

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“…It appears that the particles were irregular with an average particle size of approximately 30 to 50 nm. Similarly, the research group of Guy Van Assche [ 40 ] reported the cost-effective green synthetic route “sol-gel injection” to incorporate ZnO NPs onto porous silica matrix. They also confirmed that by enclosing ZnO NPs in the silica matrix, there is a way to monitor the size of the particles, the size distribution, and the NPs’ ability to aggregate and open up a new possibility to explore the application for catalysis and optical detection.…”

Section: Green Synthesis Methods Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

et al. 2021

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Over the last two decades, oxide nanostructures have been continuously evaluated and used in many technological applications. The advancement of the controlled synthesis approach to design desired morphology is a fundamental key to the discipline of material science and nanotechnology. These nanostructures can be prepared via different physical and chemical methods; however, a green and ecofriendly synthesis approach is a promising way to produce these nanostructures with desired properties with less risk of hazardous chemicals. In this regard, ZnO and TiO2 nanostructures are prominent candidates for various applications. Moreover, they are more efficient, non-toxic, and cost-effective. This review mainly focuses on the recent state-of-the-art advancements in the green synthesis approach for ZnO and TiO2 nanostructures and their applications. The first section summarizes the green synthesis approach to synthesize ZnO and TiO2 nanostructures via different routes such as solvothermal, hydrothermal, co-precipitation, and sol-gel using biological systems that are based on the principles of green chemistry. The second section demonstrates the application of ZnO and TiO2 nanostructures. The review also discusses the problems and future perspectives of green synthesis methods and the related issues posed and overlooked by the scientific community on the green approach to nanostructure oxides.

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Section: Green Synthesis Methods Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

et al. 2021

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“…The sol-gel process is a wet chemistry method often used to produce metal oxide NPs, nanofibers, and nanostructured thin films. This method involves the conversion of monomers into a sol (colloidal solution) that acts as the precursor for a gel (an integrated network) of discrete particles or network polymers [103]. Metal alkoxides are typical precursors.…”

Section: Wet Chemical Fabrication Techniquesmentioning

confidence: 99%

“…Metal alkoxides are typical precursors. The sol-gel method includes two main reaction steps: (i) hydrolysis of the precursor, and then (ii) polycondensation and polymerization of the hydrolyzed products [103]. Polymer/metal oxide nanofibers have been produced by combining the sol-gel and electrospinning techniques [104].…”

Section: Wet Chemical Fabrication Techniquesmentioning

confidence: 99%

Nanofibers as new-generation materials: From spinning and nano-spinning fabrication techniques to emerging applications

Barhoum

Pal

Rahier

et al. 2019

Applied Materials Today

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336

185

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Nanofiber unique characteristics and potential applications offer innovative strategies and opportunities for sustainable energy production, and for creative solutions to biomedical, healthcare, and environmental problems. This review summarizes the history and development of nanofiber technology, their unique properties, fabrication techniques (using spinning and nonspinning approaches), and emerging applications in energy harvesting and storage, environmental protection and improvement, and biomedical technology and healthcare.Nanofibers are currently used as electrode and membrane materials for batteries, supercapacitors, fuel cells, and solar cells. Nanofiber membranes are also successfully used for ultra-high air filtration, wastewater treatment, water purification, and blood purification at low pressure. This review will describe the different types of nanostructured fibers (e.g., solid, mesoporous, hollow, core-shell nanofibers) fabricated from natural and synthetic polymers, metal and metal oxides, carbon-based, inorganic-organic hybrid nanofibers and their potential applications. Moreover, it will highlight the current and future research needs in nanofiber-based materials to improve and broaden their applications and commercialization.

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“…Meanwhile, chemical approach involves synthesis of ZnONPs using several reducing agents, costly metal salts, toxic solvents, and reductants. These physical and chemical methods are not only expensive at industrial level production, but also possess potential environmental and biological hazards [15][16][17][18]. In contrast, biological/biogenic synthesis of NPs is an emerging area and economically feasible option in the field of "green chemistry" [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Bioactivities of Geranium wallichianum Leaf Extracts Conjugated with Zinc Oxide Nanoparticles

et al. 2019

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This study attempts to obtain and test the bioactivities of leaf extracts from a medicinal plant, Geranium wallichianum (GW), when conjugated with zinc oxide nanoparticles (ZnONPs). The integrity of leaf extract-conjugated ZnONPs (GW-ZnONPs) was confirmed using various techniques, including Ultraviolet–visible spectroscopy, X-Ray Diffraction, Fourier Transform Infrared Spectroscopy, energy-dispersive spectra (EDS), scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The size of ZnONPs was approximately 18 nm, which was determined by TEM analysis. Additionally, the energy-dispersive spectra (EDS) revealed that NPs have zinc in its pure form. Bioactivities of GW-ZnONPs including antimicrobial potentials, cytotoxicity, antioxidative capacities, inhibition potentials against α-amylase, and protein kinases, as well as biocompatibility were intensively tested and confirmed. Altogether, the results revealed that GW-ZnONPs are non-toxic, biocompatible, and have considerable potential in biological applications.

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Sol-gel hot injection synthesis of ZnO nanoparticles into a porous silica matrix and reaction mechanism

Cited by 47 publications

References 35 publications

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

Nanofibers as new-generation materials: From spinning and nano-spinning fabrication techniques to emerging applications

Bioactivities of Geranium wallichianum Leaf Extracts Conjugated with Zinc Oxide Nanoparticles

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