scholarly journals The Development of Graphene/Silica Hybrid Composites: A Review for Their Applications and Challenges

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1337
Author(s):  
Murni Handayani ◽  
Nurin Nafi’ah ◽  
Adityo Nugroho ◽  
Amaliya Rasyida ◽  
Agus Budi Prasetyo ◽  
...  
Keyword(s):  
Hybrid Composites ◽  
Sol Gel ◽  
Synthesis Method ◽  
Future Research ◽  
Future Prospects ◽  
Practical Application ◽  
Encapsulation Methods ◽  
Application Prospects ◽  
Biomedical Fields ◽  
Silica Hybrid

Graphene and silica are two materials that have wide uses and applications because of their unique properties. Graphene/silica hybrid composite, which is a combination of the two, has the good properties of a combination of graphene and silica while reducing the detrimental properties of both, so that it has promising future prospects in various fields. It is very important to design a synthesis method for graphene/silica composite hybrid materials to adapt to its practical application. In this review, the synthesis strategies of graphene, silica, and hybrid graphene/silica composites such as hydrothermal, sol-gel, hydrolysis, and encapsulation methods along with their results are studied. The application of this composite is also discussed, which includes applications such as adsorbents, energy storage, biomedical fields, and catalysts. Furthermore, future research challenges and futures need to be developed so that hybrid graphene/silica composites can be obtained with promising new application prospects.

Synthesis and characterization of acrylic rubber/silica hybrid composites prepared by sol-gel technique

2004 ◽  
Vol 93 (6) ◽  
pp. 2579-2589 ◽  
Author(s):  
Abhijit Bandyopadhyay ◽  
Anil K. Bhowmick ◽  
Mousumi De Sarkar
Keyword(s):  
Hybrid Composites ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Gel Technique ◽  
Silica Hybrid

Facile method for synthesis of polyaniline/silica hybrid composites by simultaneous sol–gel process and “in situ” polymerization of aniline

2012 ◽  
Vol 63 (3) ◽  
pp. 373-381 ◽  
Author(s):  
Mayra González ◽  
Bluma G. Soares ◽  
Matheus Magioli ◽  
Jéssica A. Marins ◽  
Jacques Rieumont
Keyword(s):  
In Situ Polymerization ◽  
Hybrid Composites ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Silica Hybrid

scholarly journals Aluminate-Based Nanostructured Luminescent Materials: Design of Processing and Functional Properties

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4591
Author(s):  
Rocío Estefanía Rojas-Hernandez ◽  
Fernando Rubio-Marcos ◽  
José Francisco Fernandez ◽  
Irina Hussainova
Keyword(s):  
Light Exposure ◽  
Sol Gel ◽  
Synthesis Method ◽  
Glass Ceramics ◽  
High Strength ◽  
Salt Flux ◽  
Future Research ◽  
Luminescent Materials ◽  
Exposure Limits ◽  
Potential Methods

Interest in luminescent materials has been continuously growing for several decades, looking for the development of new systems with optimized optical properties. Nowadays, research has been focused on the development of materials that satisfy specific market requirements in optoelectronics, radioelectronics, aerospace, bio-sensing, pigment applications, etc. Despite the fact that several efforts have made in the synthesis of organic luminescent materials, their poor stability under light exposure limits their use. Hence, luminescent materials based on inorganic phosphors are considered a mature topic. Within this subject, glass, glass-ceramics and ceramics have had great technological relevance, depending on the final applications. Supposing that luminescent materials are able to withstand high temperatures, have a high strength and, simultaneously, possess high stability, ceramics may be considered promising candidates to demonstrate required performance. In an ongoing effort to find a suitable synthesis method for their processing, some routes to develop nanostructured luminescent materials are addressed in this review paper. Several ceramic families that show luminescence have been intensively studied in the last few decades. Here, we demonstrate the synthesis of particles based on aluminate using the methods of sol-gel or molten salts and the production of thin films using screen printing assisted by a molten salt flux. The goal of this review is to identify potential methods to tailor the micro-nanostructure and to tune both the emission and excitation properties, focusing on emerging strategies that can be easily transferred to an industrial scale. Major challenges, opportunities, and directions of future research are specified.

scholarly journals Synthesis of novel adsorbent based on tetrasulfide-functionalized fibrous silica KCC-1 for removal of Hg(II) cations

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Azam Marjani ◽  
Reza Khan Mohammadi
Keyword(s):  
Effective Interaction ◽  
Sol Gel ◽  
Aqueous Media ◽  
Synthesis Method ◽  
Mercury Ions ◽  
Toxic Heavy Metals ◽  
Uptake Capacity ◽  
Hydrothermal Preparation ◽  
Ultrasonic Assisted ◽  
First Time

AbstractHg(II) has been identified to be one of the extremely toxic heavy metals because of its hazardous effects and this fact that it is even more hazardous to animals than other pollutants such as Ag, Au, Cd, Ni, Pb, Co, Cu, and Zn. Accordingly, for the first time, tetrasulfide-functionalized fibrous silica KCC-1 (TS-KCC-1) spheres were synthesized by a facile, conventional ultrasonic-assisted, sol–gel-hydrothermal preparation approach to adsorb Hg(II) from aqueous solution. Tetrasulfide groups (–S–S–S–S–) were chosen as binding sites due to the strong and effective interaction of mercury ions (Hg(II)) with sulfur atoms. Hg(II) uptake onto TS-KCC-1 in a batch system has been carried out. Isotherm and kinetic results showed a very agreed agreement with Langmuir and pseudo-first-order models, respectively, with a Langmuir maximum uptake capacity of 132.55 mg g–1 (volume of the solution = 20.0 mL; adsorbent dose = 5.0 mg; pH = 5.0; temperature: 198 K; contact time = 40 min; shaking speed = 180 rpm). TS-KCC-1was shown to be a promising functional nanoporous material for the uptake of Hg(II) cations from aqueous media. To the best of our knowledge, there has been no report on the uptake of toxic Hg(II) cations by tetrasulfide-functionalized KCC-1 prepared by a conventional ultrasonic-assisted sol–gel-hydrothermal synthesis method.

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