Journal of Sol-Gel Science and Technology

Items from 1 to 20 out of 27 results

article

SBA-type mesoporous materials with cylindrical and spherical structures for the controlled loading and release of ibuprofen

G. Porras Quevedo, A. Campero Celis, C. Velasquez Ordonez, M. L. Ojeda Martinez

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 486-494

In this work, three kinds of mesoporous silica materials: SBA-15, SBA-16, and DIM (mixture of two type of mesopores) with different morphologies and array of mesopores (hexagonal, cubic, and hexagonal-cubic, respectively) were prepared, characterized and employed as ibuprofen (IBU) carriers to study the influence of mesoporous structure on drug delivery property. The results obtained indicated that...

article

Hybrid vinyl silane and P123 template sol−gel derived carbon silica membrane for desalination

Hong Yang, David K. Wang, Julius Motuzas, João C. Diniz da Costa

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 280-289

Mesoporous, interlayer-free, hybrid carbon-silica membranes based on organosilica of triethoxyvinylsilane (TEVS) and pluronic triblock copolymer poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (P123) were successfully prepared by modified acid-base catalysed sol–gel method. Xerogels and membranes were pyrolyzed under inert conditions in vacuum and nitrogen to form the hybrid carbon...

article

Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/boric acid/poly(N-methyl benzamide)-b-poly(propylene oxide) block copolymer nanocomposites – no weight loss behavior of the block copolymer in the nanocomposites even after calcination at 800 °C

Yuta Aomi, Yoshiyuki Oishi, Yuji Shibasaki, Yuki Aikawa, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 318-329

Fluoroalkyl end-capped vinyltirimethoxysilane oligomeric silica/boric acid nanocomposites [R_F-(VM-SiO₂)_n-R_F/B(OH)₃] were prepared by the composite reaction of the corresponding fluorinated oligomer [R_F-(CH₂CHSi(OMe)₃)_n-R_F, n = 2, 3; R_F = CF(CF₃)OC₃F₇: R_F-(VM)_n-R_F] with boric acid. The nanocomposites thus obtained were tried to interact with the thermoplastic elastomers such as poly(N-methyl benzamide)-...

article

Chemical substitution-induced structure transition and enhanced magnetic and optical properties of sol–gel synthesized multiferroic BiFeO₃ nanoparticles

Ting Wang, S. -H. Song, X. -L. Wang, J. -J. Chen, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 356-368

Substitution-induced modifications in structural, magnetic and optical properties of Nb doped and Sm–Nb co-doped BiFeO₃ nanoparticles are reported. X-ray diffraction and Raman analyses indicate that the phase transforms from a rhombohedral to orthorhombic one due to Nb doping and Sm–Nb co-doping. The Nb doping and Sm–Nb co-doping both can lead to a decrease in particle size and an enhancement in magnetic...

article

New porphyrin-doped silica monolith: an effective adsorbent for heavy metal ions in aqueous solution

Seyede Sara Khalili, Hossein Dehghani, Malihe Afrooz

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 290-301

A series of inorganic-organic hybrid materials, incorporating of 5,15-bis[4-(carboxyphenyl)]-10,20-bis[4-(isopropylphenyl)] porphyrin (trans-porphyrin) in the silica matrices were prepared by a sol–gel method. The effect of amine groups in the monolith and concentration of porphyrin in hybrid nanostructures on the adsorption amount of the toxic inons from aqueous solution was investigated. The experimental...

article

Ferroelectric behavior of La and Mn co-doped BiFeO₃–PbTiO₃ thin films prepared by sol–gel method

Dongfang Chen, Jinrong Cheng

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 431-435

Solid solution films of 0.7BiFeO₃–0.3PbTiO₃, 0.7(Bi_0.97La_0.03)FeO₃–0.3PbTiO₃, 0.7Bi(Fe_0.96Mn_0.04)O₃–0.3PbTiO₃ and 0.7(Bi_0.97La_0.03)(Fe_0.96Mn_0.04)O₃–0.3PbTiO₃ on Pt/Si structures were fabricated by sol–gel process. Effects of La and Mn doping on microstructures, ferroelectric behavior and leakage current of BiFeO₃–PbTiO₃ films were investigated. It was found that the coercive field of the BLFPT thin...

article

Assembly of Ni(OH)₂-based electrodes without material synthesis step for application in supercapacitors

Min Shi, Yanhong Li, Li Wang, Jing Li, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 349-355

In this work, a facile material synthesis step-free strategy for the cost-effective assembly of Ni(OH)₂-based electrodes was reported. The Ni(OH)₂/MWCNTs composite electrodes for application in supercapacitors were assembled through the in-situ reaction of NiCl₂·6H₂O in nickel foam as current collector with alkaline electrolyte. The characterization results indicated that NiCl₂·6H₂O as raw material...

article

Study of thermal and flame behavior of phosphorus-based silica for epoxy composites

Vibha Shree, A. K. Sen

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 269-279

Phosphorous-containing silica was prepared by acid hydrolysis of sodium silicate via a cost-effective sol–gel method. Phosphorus was incorporated during synthesis of silica by adding three different phosphorus compounds namely di-sodium hydrogen orthophosphate, orthophosphoric acid, and hypophosphorous acid. The silica powder was analyzed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric...

article

Egg albumin-assisted sol–gel synthesis and photo-catalytic activity of SnO₂ micro/nano-structured biscuits

Xiuying Tian, Shixun Lian, Jin Wen, Zhanjun Chen, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 402-412

SnO₂ micro/nano-structured biscuits had been successfully prepared via egg albumin-assisted sol–gel procedure. The typical sample calcined at 900 °C was pure SnO₂ with a tetragonal rutile structure, constructed by the numerous pomegranate seed-like irregular nanoparticles in the range of ~100 to ~400 nm. The complexation of egg albumin and tin ions and the bonding characteristics of functional groups...

article

Sol–gel solvothermal route to synthesize anatase/brookite/rutile TiO₂ nanocomposites with highly photocatalytic activity

Xin Qian, Huanre Han, Yulong Chen, Ye Yuan

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 394-401

In this study, an attempt is done to synthesize anatase/brookite/rutile TiO₂ nanocomposites via a simple solvothermal method with hydrochloric acid, dehydrated ethanol, and titanium butoxide in a sol−gel environment. The effect of preparation temperature on the content of each phase, crystallite size, morphology, and photocatalytic activity was systemically studied. The structures of the products...

article

Modified crystal structure, dielectric properties, and magnetic phase transition temperature of Ca doped BiFeO₃ ceramic

Gui Lin Song, Jian Su, Haigang Yang, Na Zhang, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 421-430

This paper deals with the preparation of multiferroic Bi_1−xCa_xFeO₃(x = 0–0.2) ceramics with the sol–gel method and a study on the influence of Ca²⁺ doping on the structure, dielectric, and ferromagnetic properties of BiFeO₃ ceramics. The result shows that the XRD analysis reveals a phase transition in Ca-doped BiFeO₃ from rhombohedral to orthorhombic when x is greater than 0.1. The dielectric constant...

article

Dielectric, piezo and ferroelectric properties of microwave sintered PbTiO₃ synthesized by sol–gel method

C. Pavithra, W. Madhuri

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 437-445

Of all the piezoelectric ceramics, lead titanate (PbTiO₃) has an important place as an electromechanical transducer. In the present article PbTiO₃ synthesized by sol–gel technique and microwave processed is presented. The sintered PbTiO₃ is found to be of high density. The sintered PbTiO₃ crystal structure and crystallinity confirmed by powder X-ray diffraction and sample weight loss and decomposition...

article

Structure and transmittance behavior of sol–gel silica nanoparticles synthesized using pH-stable alkanolamines

Joo Yeon Sung, Bong-Ki Ryu, Dae-Ho Lee

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 495-503

Although sol–gel silica nanoparticles are widely used in academic and industrial applications, only a few studies have focused on amine catalysts other than ammonia to control the particle size. In this study, we systematically investigated how the particle size is affected by various amine catalysts such as ammonia (NH₃), ethanolamine (EOA), diethanolamine (DEOA), and triethanolamine (TEOA) in a...

article

Analysis of structural and UV photodetecting properties of ZnO nanorod arrays grown on rotating substrate

R. Shakernejad, A. Khayatian, A. Ramazani, S. F. Akhtarianfar, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 458-469

ZnO nanorods (NRs) were successfully synthesized on seed layered substrate by a novel rotational hydrothermal method. The effect of substrate rotational speed on the growth of ZnO NRs were systematically characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). With an increase of the rotational speed, the mean diameter of the ZnO NRs decreased from ~ 43 nm...

article

Synthesis and characterization of pectin/SiO₂ hybrid materials

Nadezhda Rangelova, Lyubomir Aleksandrov, Sanchi Nenkova

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 330-339

Amorphous hybrid materials with participation of water soluble biopolymer (pectin from apple-AP) and silica derived from tetraethoxy silane (TEOS) were synthesized by sol–gel method. The influence of biopolymer content was determined. The principles of the hybrids formation were developed using structural data from Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Differential...

article

Black ZnO/C nanocomposite photocatalytic films formed by one-step sol–gel technique

N. M. Denisov, E. B. Chubenko, V. P. Bondarenko, V. E. Borisenko

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 413-420

We developed a facile one-step sol–gel technique for fabrication of black zinc oxide/carbon (ZnO/C) nanocomposite films demonstrating an enhanced photocatalytic activity. Amorphous carbon covering ZnO grains inside the films was reduced from organic components of the zinc acetate based sol calcinated at 500 °C. The amount of carbon in the films can be controlled by varying the amount of zinc chloride...

article

Role of oxalic acid in structural formation of sodium silicate-based silica aerogel by ambient pressure drying

Ha-Yoon Nah, Vinayak G. Parale, Hae-Noo-Ree Jung, Kyu-Yeon Lee, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 302-310

Recently, the demand of sodium silicate-based silica aerogels has decreased due to its inadequate physical properties when compared to those made by other silicon alkoxides. To avoid this problem, introduction of a drying control chemical additive (DCCA) in the sol has received great attention. DCCA is one of the additives that can control the rate of hydrolysis and the condensation reaction in sol...

article

Hybrid sol–gel silica adsorbent materials synthesized by molecular imprinting for tannin removal

Jaqueline Benvenuti, Larissa Brentano Capeletti, Mariliz Gutterres, João Henrique Zimnoch Santos

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 446-457

This study reports the development of a functional adsorbent synthesized by the molecular imprinting method in a sol–gel matrix. The adsorption capacity of the organic-inorganic hybrid adsorbent material was tested on tannin compounds, i.e., phenolic substances that are among the most difficult compounds to remove in industrial wastewater. The specific surface area obtained by nitrogen porosimetry...

article

Polymerization behavior of silicic acid with Fe³⁺, Al³⁺, and Ca²⁺ coexisting ions

Xingmei Shen, Jun Ge, Ping Wang, Xingrong Wu, more

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 480-485

Silicic acid was prepared by acid hydrolysis of water-quenched calcium silicate, and Ca²⁺, Al³⁺, and Fe³⁺ were added to investigate the polymerization behavior. Effect order of the three ions on the polymerization was Fe³⁺ > Al³⁺ > Ca²⁺. Due to decreased polymerization rate caused by Fe³⁺ at pH < 3, average diameter of the colloidal particles at pH = 2 was larger than that at pH = 3. New...

article

Correction to: Ferroelectric behavior of La and Mn co-doped BiFeO₃–PbTiO₃ thin films prepared by sol–gel method

Dongfang Chen, Jinrong Cheng

Journal of Sol-Gel Science and Technology > 2018 > 85 > 2 > 436-436

Correction to: J Sol-Gel Sci Technol https://doi.org/10.1007/s10971-017-4549-y.In the original publication of the article, there is an error in the grant number of the National Natural Science Foundation of China in the acknowledgement section. The correct acknowledgement text has given below:Acknowledgements This work was supported by the National Natural Science Foundation of China (Grant no. 51672169)...

Number:
2
Volume:
85
Year:
2018

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Keywords

SILICA (5)
SOL–GEL (4)
DIELECTRIC PROPERTIES (2)
NANOCOMPOSITE (2)
PHOTOCATALYSIS (2)
SEM (2)
SOL–GEL METHOD (2)
SOL–GEL TECHNIQUE (2)
3-AMINOPROPYLTRIETHOXYSILANE-APTES (1)
ADDITIVES (1)
ALKANOLAMINE (1)
AMBIENT PRESSURE DRYING (1)
BACTERICIDAL ACTIVITY (1)
BIFEO3–PBTIO3 THIN FILMS (1)
BIO-ETHANOL (1)
BIOPOLYMERS (1)
BORIC ACID (1)
CADMIUM WATER TREATMENT (1)
CADMIUM-IODINE CERAMICS (1)
CARBON SILICA (1)
CATALYST (1)
CBD METHOD (1)
CDO (1)
CDSE (1)
CERAMIC (1)
CIPROFLOXACIN (1)
CO-SUBSTITUTION (1)
COALESCENCE (1)
COEXISTING (1)
CONTROLLED RELEASE (1)
CRYSTAL STRUCTURE (1)
CUO–ZNO–AL2O3–ZRO2 CATALYST (1)
DESALINATION MEMBRANE (1)
DIAMETER (1)
DRUG RELEASE (1)
DRYING CONTROL CHEMICAL ADDITIVE (1)
ELECTROSPINNING (1)
FERROELECTRIC PROPERTIES (1)
FERROELECTRICITY (1)
FLAME RETARDANT (1)
FLOWER-LIKE MICROSPHERES (1)
FLUORINATED OLIGOMER (1)
GEL-TIME (1)
HYBRID ORGANIC-INORGANIC MATERIALS (1)
I-DOPED CDO (1)
IBUPROFEN (1)
IN-SITU REACTION (1)
INTERLAYER-FREE (1)
ION IMPRINT (1)
KONJAC GLUCOMANNAN (1)
LEAD TITANATE (1)
LEAKAGE (1)
MAGNETIC HYSTERESIS LOOPS (1)
MAGNETIC PROPERTIES (1)
MESOPOROUS (1)
MESOPOROUS MATERIALS (1)
MESOPOROUS SILICA/HYDROXYAPATITE COMPOSITE (1)
METAL IONS ADSORBENT (1)
MILD PH (1)
MOLECULAR IMPRINTING (1)
MULTIFERROIC (1)
MULTIFERROICS (1)
NANOFIBER MEMBRANE (1)
NANOSHEETS (1)
NI(OH)2 (1)
NO WEIGHT LOSS (1)
ONE-POT SYNTHESIS (1)
OPTICAL BAND GAP (1)
OPTICAL PROPERTIES (1)
ORGANIC-INORGANIC MATERIALS (1)
OXALATE GEL-COPRECIPITATION (1)
OXALIC ACID (1)
OXALIPLATIN (1)
P123 TEMPLATE (1)
PARTICLE SIZE (1)
PECTIN (1)
PH-STABLE (1)
PHOSPHORUS (1)
PHOTOCATALYTIC ACTIVITY (1)
PHOTOLUMINESCENT (1)
POLYDOPAMINE (1)
POLYMERIZATION (1)
POLYPHENOLICS REMOVAL (1)
PTD (1)
RAMAN (1)
SBA-15 (1)
SBA-TYPE MESOPOROUS MATERIALS (1)
SEMICONDUCTORS (1)
SILICA AEROGEL (1)
SILICA MONOLITH (1)
SILICA NANOPARTICLE (1)
SILICIC ACID (1)
SI–O–EU (1)
SM AND NB CO-DOPING (1)
SODIUM SILICATE (1)
SOLVOTHERMAL (1)
SOL–GEL CHEMISTRY (1)
STRUCTURE TRANSITION (1)
SUBSTRATE ROTATIONAL SPEEDS (1)
SUPERCAPACITORS (1)
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Journal of Sol-Gel Science and Technology

SBA-type mesoporous materials with cylindrical and spherical structures for the controlled loading and release of ibuprofen

Hybrid vinyl silane and P123 template sol−gel derived carbon silica membrane for desalination

Preparation of fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/boric acid/poly(N-methyl benzamide)-b-poly(propylene oxide) block copolymer nanocomposites – no weight loss behavior of the block copolymer in the nanocomposites even after calcination at 800 °C

Chemical substitution-induced structure transition and enhanced magnetic and optical properties of sol–gel synthesized multiferroic BiFeO₃ nanoparticles

New porphyrin-doped silica monolith: an effective adsorbent for heavy metal ions in aqueous solution

Ferroelectric behavior of La and Mn co-doped BiFeO₃–PbTiO₃ thin films prepared by sol–gel method

Assembly of Ni(OH)₂-based electrodes without material synthesis step for application in supercapacitors

Study of thermal and flame behavior of phosphorus-based silica for epoxy composites

Egg albumin-assisted sol–gel synthesis and photo-catalytic activity of SnO₂ micro/nano-structured biscuits

Sol–gel solvothermal route to synthesize anatase/brookite/rutile TiO₂ nanocomposites with highly photocatalytic activity

Modified crystal structure, dielectric properties, and magnetic phase transition temperature of Ca doped BiFeO₃ ceramic

Dielectric, piezo and ferroelectric properties of microwave sintered PbTiO₃ synthesized by sol–gel method

Structure and transmittance behavior of sol–gel silica nanoparticles synthesized using pH-stable alkanolamines

Analysis of structural and UV photodetecting properties of ZnO nanorod arrays grown on rotating substrate

Synthesis and characterization of pectin/SiO₂ hybrid materials

Black ZnO/C nanocomposite photocatalytic films formed by one-step sol–gel technique

Role of oxalic acid in structural formation of sodium silicate-based silica aerogel by ambient pressure drying

Hybrid sol–gel silica adsorbent materials synthesized by molecular imprinting for tannin removal

Polymerization behavior of silicic acid with Fe³⁺, Al³⁺, and Ca²⁺ coexisting ions

Correction to: Ferroelectric behavior of La and Mn co-doped BiFeO₃–PbTiO₃ thin films prepared by sol–gel method

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