Synthesis of silica–silver wires by a sol–gel technique

Gutiérrez-Wing, C.; Pérez-Hernández, R.; Mondragón‐Galicia, G.; Villa-Sánchez, Gerardo; Fernández-García, M. E.; Arenas-Alatorre, Jesús; Mendoza-Anaya, D.

doi:10.1016/j.solidstatesciences.2009.05.022

Cited by 10 publications

(6 citation statements)

References 18 publications

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“…The hybrid SiWs were washed with ethanol, air-dried for 2 days, and finally used to prepare a suspension of 20 mg/mL silica in ethanol. 30 Samples denoted as S 1 and S 2 were obtained using two different amounts, i.e., 30 and 60 μL, of surfactant C 8 TMOS by the above method. The silica films were coated on glass slides by the dip-coating method (as mentioned above) and cotton fabric by immersing the fabric in the final solution for 5 min with stirring and then drying in an oven at 80 °C for 3 min.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…On the glass slide, a thin layer of silica wires was deposited. The excess liquid was removed from the surface by shaking the glass slide for a few seconds. , The mixture was shaken for 5 min immediately and left static for 22 h at 37 °C to grow silica wires (SiWs). The sample was then sonicated (DSA100-SK1-2.8L, V = 220 V, P = 100 W, 50 Hz) for 1 h and centrifuged (PLC-3, P = 220 V/50 Hz, 0.65 A) at 4500 rpm for 60 min to separate SiWs in a 15 mL centrifugation tube.…”

Section: Experimentationmentioning

confidence: 99%

“…The sample was then sonicated (DSA100-SK1-2.8L, V = 220 V, P = 100 W, 50 Hz) for 1 h and centrifuged (PLC-3, P = 220 V/50 Hz, 0.65 A) at 4500 rpm for 60 min to separate SiWs in a 15 mL centrifugation tube. The hybrid SiWs were washed with ethanol, air-dried for 2 days, and finally used to prepare a suspension of 20 mg/mL silica in ethanol . Samples denoted as S 1 and S 2 were obtained using two different amounts, i.e., 30 and 60 μL, of surfactant C 8 TMOS by the above method.…”

Section: Experimentationmentioning

confidence: 99%

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Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

et al. 2022

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Alkyl silica membranes and wires were synthesized by a sol−gel method, which has the capacity to control the size of the particles or membranes by controlling the reactions. Trimethoxyoctylsilane (C 8 TMOS) was used as a chemical surfactant; poly(vinylpyrrolidone) (PVP) as an emulsifier, dissolved in butanol for emulsion; and tetraethylorthosilicate (TEOS) as a precursor and a source of silica. An assembly of silica wires was fabricated on glass and cotton substrates by the dipcoating technique. Porous membranes and silica wires were observed using scanning electron microscopy (SEM) images. The contact angles of all of the samples were in the range of 140−154°as measured by ImageJ software, which confirmed the hydrophobic nature of the samples. The contact angle was increased by increasing the amount of the surfactant. Phase changes of silica wires and membranes were investigated by thermogravimetric analysis. Chemical bonds of the sample were studied using Fourier transform infrared (FTIR) spectroscopy. The band gap of silica nanowires was measured to be 3.8−3.4 eV using the UV−visible spectrum and decreased as compared to that of bulk silica. These silica-based porous membranes with enhanced transport properties can be used in filtration and separation techniques. This fabricated hybrid silica membrane showed ∼96% salt rejection within a permeation flux of 3.04 L/m 2 h.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Experimentationmentioning

confidence: 99%

Section: Experimentationmentioning

confidence: 99%

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Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

et al. 2022

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“…[ 115 ] The proposed mechanism for AgNW formation is summarized in Figure 3. Alongside these methods, AgNWs can also be prepared via electrochemical deposition, [ 116 ] the sol–gel method, [ 117 ] and so on; these are also listed in Table S1 (Supporting Information).…”

Section: Preparation Of Agnwsmentioning

confidence: 99%

Silver Nanowire Synthesis and Applications in Composites: Progress and Prospects

Yang

Wang

et al. 2022

Adv Materials Technologies

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Silver nanowires (AgNWs) have gained increased interest as highly conductive and transparent nanomaterials with numerous applications across various fields. Owing to their unique properties (e.g., optical transparency, electrical conductivity, mechanical characteristics, and ease of processing), AgNWs have been extensively investigated for application in light‐emitting diodes, solar cells, electrocatalysis, liquid crystal displays, wearable electronic devices, flexible nanosensors, and supercapacitors. In this review, recent advances in the synthesis of AgNWs (including the polyol, template, wet chemical, and photoreduction methods) are discussed, with a focus on their advantages and disadvantages in terms of AgNW structural regulation. Furthermore, the advantages and applications of AgNW composites, are comprehensively reviewed and analyzed, with a focus on energy storage and optoelectronics, sensors, electromagnetic interference shielding and absorbing materials, nanogenerators, and other applications. The prospects and challenges of AgNW composites in emerging applications are also proposed.

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“…A serious drawback of Ag NWs is aging, which leads to the deterioration of these attractive properties. Aging could be inhibited by coating Ag NWs with protective layers like SiO 2 − or TiO 2 via a relatively simple sol–gel process . The coating can be partly removed from the ends of the NWs in order to form nanocables and to serve as interconnects in nanoscale electronic circuits.…”

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confidence: 99%

Shape Restoration Effect in Ag–SiO₂ Core–Shell Nanowires

et al. 2014

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The combination of two different materials in a single composite core-shell heterostructure can lead to improved or even completely novel properties. In this work we demonstrate the enhancement of the mechanical properties of silver (Ag) nanowires (NW) achieved by coating them with a silica (SiO2) shell. In situ scanning electron microscope (SEM) nanomechanical tests of Ag-SiO2 core-shell nanowires reveal an improved fracture resistance and an electron-beam induced shape restoration effect. In addition, control experiments are conducted separately on uncoated Ag NWs and on empty SiO2 shells in order to gain deeper insight into the peculiar properties of Ag-SiO2. Test conditions are simulated using finite-element methods; possible mechanisms responsible for the shape restoration and the enhanced fracture resistance are discussed.

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Synthesis of silica–silver wires by a sol–gel technique

Cited by 10 publications

References 18 publications

Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

Silver Nanowire Synthesis and Applications in Composites: Progress and Prospects

Shape Restoration Effect in Ag–SiO₂ Core–Shell Nanowires

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Synthesis of silica–silver wires by a sol–gel technique

Cited by 10 publications

References 18 publications

Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

Alkyl Silica Hybrid Nanowire Assembly in Improved Superhydrophobic Membranes for RO Filtration

Silver Nanowire Synthesis and Applications in Composites: Progress and Prospects

Shape Restoration Effect in Ag–SiO2 Core–Shell Nanowires

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Product

Resources

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Shape Restoration Effect in Ag–SiO₂ Core–Shell Nanowires