scholarly journals Recent Progress of Microwave-Assisted Synthesis of Silica Materials

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1092 ◽  
Author(s):  
Borja Díaz de Greñu ◽  
Ruth de los Reyes ◽  
Ana M. Costero ◽  
Pedro Amorós ◽  
Jose Vicente Ros-Lis
Keyword(s):  
Energy Source ◽  
Drug Release ◽  
Mesoporous Materials ◽  
Metallic Nanoparticles ◽  
Recent Progress ◽  
Gas Adsorption ◽  
Microwave Assisted Synthesis ◽  
Synthesis Conditions ◽  
Microwave Assisted ◽  
Silica Materials

Microwaves are a source of energy of great interest for chemical synthesis. Among nanomaterials, few are as versatile as silica—it forms mesoporous materials and nanoparticles, it can be incorporated as shells or loaded in composites, it can also be functionalized. Despite the relevant properties of silica, and the advantages of the use of microwave as energy source, its use in silica-based materials is not frequent. We report herein a compilation of the research results published in the last 10 years of microwave assisted synthesis of silica based materials. This review includes examples of mesoporous materials for waste removal, catalysis, drug release, and gas adsorption applications, together with examples based in the optimization of the synthesis conditions. In the case of non-porous materials, examples of analytical applications, coating of metallic nanoparticles, and SiOx-C materials have been collected.

Microwave-assisted synthesis of (S)Fe/TiO2 systems: Effects of synthesis conditions and dopant concentration on photoactivity

2013 ◽  
Vol 140-141 ◽  
pp. 213-224 ◽  
Author(s):  
K. Esquivel ◽  
R. Nava ◽  
A. Zamudio-Méndez ◽  
M. Vega González ◽  
O.E. Jaime-Acuña ◽  
...  
Keyword(s):  
Dopant Concentration ◽  
Microwave Assisted Synthesis ◽  
Synthesis Conditions ◽  
Microwave Assisted

Composition and Spectral Investigation for Tetranitro Iron Phthalocyanine

2016 ◽  
Vol 859 ◽  
pp. 175-178 ◽  
Author(s):  
Shu Ying Li ◽  
Zhao Yang Zeng ◽  
Shan Shan Du
Keyword(s):  
Optimal Synthesis ◽  
Microwave Assisted Synthesis ◽  
Iron Phthalocyanine ◽  
Single Variable ◽  
Green Color ◽  
Synthesis Conditions ◽  
Microwave Assisted ◽  
Green Vegetation ◽  
Dark Green ◽  
Green Paint

Because of the dark green color similar to vegetation, tetranitro iron phthalocyanine has great potentiality in military camouflage application. Tetranitro iron phthalocyanine was synthesized in the method of improved microwave-assisted synthesis. By single-variable controlling principle, the optimal synthesis conditions in laboratory for tetranitro iron phthalocyanine composing was determined. The spectra difference under different conditions between tetranitro iron phthalocyanine and green vegetation was analyzed. The possibility for using tetranitro iron phthalocyanine as green paint in camouflage was discussed

Microwave-Assisted Synthesis of 2-(2-Nitroethenly)thiophene from 2-Thiophenecarboxaldehyde and Nitromethane

2012 ◽  
Vol 268-270 ◽  
pp. 500-503
Author(s):  
Jun De Xing ◽  
Zhi Liu ◽  
Zhao Yu Zhang ◽  
Xiao Fei Jia
Keyword(s):  
Energy Source ◽  
Reaction Time ◽  
Microwave Irradiation ◽  
Knoevenagel Condensation ◽  
Microwave Assisted Synthesis ◽  
Beta Alanine ◽  
Microwave Assisted ◽  
Reaction Condition ◽  
Efficient Access

2-(2-Nitroethenly)thiophene can be obtained from 2-thiophenecarboxaldehyde and nitromethane under Knoevenagel condensation conditions. We used beta-alanine as a catalyst and microwave irradiation as the energy source. Different reaction condition, such as beta-alanine consumption and reaction time were studied. The results indicate that the application of microwave irradiation increases the yield of desired compound. beta-Alanine-catalyzed activation of 2-thiophenecarboxaldehyde provides an efficient access to 2-(2-nitroethenly)thiophene with reusability of the catalyst.

Microwave Assisted Preparation and Characterization of Ionic Liquid [Bmim]PF6 and Synthesis and Characterization of Titanium Dioxide Using [Bmim]PF6 as Medium

2011 ◽  
Vol 183-185 ◽  
pp. 1662-1666 ◽  
Author(s):  
Ya Rui Wu ◽  
Wei Sheng Guan ◽  
Shu Lin
Keyword(s):  
Ionic Liquid ◽  
Titanium Dioxide ◽  
Influence Factors ◽  
Microwave Oven ◽  
Synthesis And Characterization ◽  
Microwave Assisted Synthesis ◽  
Synthesis Conditions ◽  
Microwave Assisted ◽  
Degradation Ratio

[Bmim]PF6ionic liquid was synthesized through two-step reaction in the unmodified microwave oven and ionic liquid synthesis conditions were optimized, the influence factors of microwave-assisted synthesis ionic liquid was discussed. Titanium dioxide photo-catalysts using [Bmim]PF6ionic liquid as medium were prepared. Result indicated that the nanoparticle titanium dioxide obtained in [Bmim]PF6by microwave radiation exhibited higher photocatalytic activity than that by traditional methods, with the degradation ratio of phenol of 99.23% within 16 h.

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