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Jurnal Institusi
Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst
Indonesian Journal of Chemistry; Vol 15, No 1 (2015); 36-42
This article describes the synthesis of titania-silica composites by a sol-gel method using a mixture of silica of rice husk and titanium butoxide sols. Microstructures were examined at calcination temperature in the range of 500 to 700 °C, with tem...
Jurnal Institusi
L-Arginine-Modified Silica for Adsorption of Gold(III)
Indonesian Journal of Chemistry; Vol 15, No 2 (2015); 108-115
In this research, L-arginine-modified silica (SiO2-Arg) with 3-glycidoxypropyl-trimethoxysilane (GPTMS) as the linking agent has been synthesized through sol gel process for adsorption of Au(III) in aqueous solution. Tetraethyl orthosilicate (TEOS) a...
Jurnal Institusi
Adsorption of Ca(II), Mg(II), Zn(II), and Cd(II) on Chitosan Membrane Blended with Rice Hull Ash Silica and Polyethylene Glycol
Indonesian Journal of Chemistry; Vol 16, No 1 (2016); 45-52
In this research, chitosan based membrane blended with rice hull ash (RHA) silica and polyethylene glycol (PEG) has been applied as adsorbent of Ca(II), Mg(II), Zn(II) and Cd(II) in an aqueous solution. Membrane was synthesized by blending RHA silica...
Jurnal Institusi
Functionalization of Fe3O4/SiO2 with N-(2-Aminoethyl)-3-aminopropyl for Sorption of [AuCl4]-
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 130-137
Synthesis of Fe3O4/SiO2 modified with N-(2-aminoethyl)-3-aminopropyl group (Fe3O4/SiO2/ED) via coating method and its application for adsorption-desorption of anionic gold in aqueous solution have been conducted. The synthesized product was character...
Jurnal Institusi
Wormhole-Like Mesoporous Carbons from Gelatine as Multistep Infiltration Effect
Indonesian Journal of Chemistry; Vol 16, No 3 (2016); 239-242
Wormhole-like mesoporous carbon from gelatine (WMCG) with two different pore diameters have been synthesized by adopting a modified infiltration treatment. The infiltration effect on the morphology was investigated. The results show that the WMCG sam...
Jurnal Institusi
The Phenolic Compound from Kalanchoe blossfeldiana (Crassulaceae) Leaf and Its Antiplasmodial Activity against Plasmodium falciparum 3D7
Indonesian Journal of Chemistry; Vol 16, No 2 (2016); 156-161
Various species of Kalanchoe plants have been widely used as raw materials in traditional medicines. This study was the continuation of the researches on secondary metabolites from Indonesia Kalanchoe plants, focused on Kalanchoe blossfeldiana. Fresh...
Jurnal Institusi
Analytical Method Validation and Determination of Pyridoxine, Nicotinamide, and Caffeine in Energy Drinks Using Thin Layer Chromatography-Densitometry
Indonesian Journal of Chemistry; Vol 15, No 1 (2015); 9-15
Food supplement which contains vitamins and stimulants such as caffeine were classified as energy drink. TLC-densitometry method was chosen to determine the pyridoxine, nicotinamide, and caffeine in the energy drink sample. TLC plates of silica gel 6...
PubMed
Effects of BET Surface Area and Silica Hydrophobicity on Natural Rubber Latex Foam Using the Dunlop Process
Polymers (Basel)
To reinforce natural rubber latex foam, fumed silica and precipitated silica are introduced into latex foam prepared using the Dunlop process as fillers. Four types of silica, including Aerosil 200 (hydrophilic fumed silica), Reolosil DM30, Aerosil R...
PubMed
Silica Deposition in Abaxial Epidermis before the Opening of Leaf Blades of Pleioblastus chino (Poaceae, Bambusoideae)
Ann Bot
• Background and Aims Silica deposition is one of the important characteristics of the family Poaceae. The distribution, deposition process and physiology of silica in this family have been extensively investigated. Bamboos among members of Poaceae...
PubMed
Superiority of biomimetic micelle-entrapped nanoporous silica xerogel to deliver poorly water-soluble itraconazole
RSC Adv
Micelle-entrapped silica xerogel (M-Silica xerogel) was biomimetically synthesized to combine the advantages of micelles and silica xerogel to load poorly water-soluble drug itraconazole (ITZ). Tween 20, tween 40, and tween 80 were applied to prepare...
PubMed
Brief History, Preparation Method, and Biological Application of Mesoporous Silica Molecular Sieves: A Narrative Review
Molecules
It has been more than 30 years since the first ordered mesoporous silica molecular sieve (MCM-41) was reported, but the enthusiasm for exploiting mesoporous silica is still growing due to its superior properties, such as its controllable morphology, ...
PubMed
Rubber Rail Pad Reinforced by Modified Silica Using GPTMS and Sulfenamide Accelerator
Polymers (Basel)
The interaction between silica and rubber is very important for the production of high performance rubber. Silica surface modification with silane is a general method that aims to enhance the reinforcement efficiency of silica. In this study, a new s...
PubMed
Supported Ionic Liquid Silica as Curing Agent for Epoxy Composites with Improved Mechanical and Thermal Properties
Polymers (Basel)
The present study aims to improve the mechanical properties of epoxy composite by incorporating supported ionic liquid silica (IL-silica). The IL-silica not only showed improved interfacial interaction and reinforcement, but also served as cure agent...
PubMed
Silica-Coated Micrometer-Sized Latex Particles
Langmuir
[Image: see text] A series of silica-coated micrometer-sized poly(methyl methacrylate) latex particles are prepared using a Stöber silica deposition protocol that employs tetraethyl orthosilicate (TEOS) as a soluble silica precursor. Given the relat...
PubMed
Surface Energy Mapping of Modified Silica Using IGC Technique at Finite Dilution
ACS Omega
[Image: see text] The reinforcing silica filler, which can be more than 40% of an elastomer composite, plays a key role to achieve the desired mechanical properties in elastomer vulcanizates. However, the highly hydrophilic nature of silica surface c...
PubMed
Binding Properties of Methyltrimethoxysilane-Modified Silica Sol Particle Surfaces and Their Molecular Dynamics Simulations
Materials (Basel)
The surface bonding of silica sol particles modified by methyltrimethoxysilane (MTMS) at different temperatures was investigated. Following modification, MTMS hydrolysis products react with silica hydroxyl groups on the surface of silica particles to...
PubMed
Control over Silica Particle Growth and Particle-Biomolecule Interactions Facilitates Silica Encapsulation of Mammalian Cells with Thickness Control
ACS Biomater Sci Eng
Over the last twenty years, many strategies utilizing sol-gel chemistry to integrate biological cells into silica-based materials have been reported. One such strategy, Sol-Generating Chemical Vapor into Liquid (SG-CViL) deposition, shows promise as ...
PubMed
Crystalline silica-exposed human lung epithelial cells presented enhanced anchorage-independent growth with upregulated expression of BRD4 and EZH2 in autocrine and paracrine manners
PLoS One
Crystalline silica-induced inflammation possibly facilitates carcinogenesis. Here, we investigated its effect on lung epithelium damage. We prepared conditioned media of immortalized human bronchial epithelial cell lines (hereinafter bronchial cell l...
PubMed
Seeded-Growth of Silica Rods from Silica-Coated Particles
Langmuir
[Image: see text] Seeded growth of silica rods from colloidal particles has emerged as a facile method to develop novel complex particle structures with hybrid compositions and asymmetrical shapes. However, this seeded-growth technique has been so fa...
PubMed
Inorganic process for wet silica-doping of calcium phosphate
RSC Adv
Silica is not only a biocompatible trace element but also an essential element for bone formation and metabolism. Therefore, it is often doped into bioceramics such as calcium phosphate and calcium carbonate for enhancing biomaterial ability. Heretof...
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