Porous Nanosized Particles: Preparation, Properties, and Applications

Valtchev, Valentin; Tosheva, Lubomira

doi:10.1021/cr300439k

Cited by 531 publications

(355 citation statements)

References 325 publications

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“…The high interest in the nanosized porous materials at the beginning of the new millennium is a part of the revolution in the nanotechnology. It is known that the driving force for many processes is the local environment of atoms exposed at solid surfaces compared to that in the bulk [30]. Therefore in order to increase the number of surface atoms in the solids, two main approaches are applied: (a) decrease the size of dense particles or (b) create an open pore network within the bulk solid.…”

Section: Nanosized Zeolitesmentioning

confidence: 99%

“…The approaches applied toward nanosized molecular sieves are (i) synthesis from clear precursor suspensions in the presence of organic template, (ii) low temperature synthesis from highly alkaline organic-template-free hydrogels, and (iii) alternative methods including ionothermal, seed-induced and confined space synthesis [29][30][31][32][33]. In general the subdivision of any material into fine particles leads to immense specific surface areas that affect their properties.…”

Section: Nanosized Zeolitesmentioning

confidence: 99%

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Progress in zeolite synthesis promotes advanced applications

Zaarour

Dong

Naydenova³

et al. 2014

Microporous and Mesoporous Materials

156

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a b s t r a c tThis article outlines the importance of zeolite synthesis and their unique physicochemical characteristics promoting advanced applications. The main strategies for preparation of zeolites including organic-template assisted, organic-template free and alternative procedures are considered for synthesis of crystallites offering control and fine-tuning of their properties. Besides, rational design of zeolites with pre-determined structure, porosity, size, morphology, and composition are more viable by studying carefully the chemical and physical parameters controlling the zeolite synthesis and understanding the crystallization mechanism. Finally, a particular attention to the preparation of zeolites with nanosized dimensions and their utilization in innovative applications including photovoltaic, medicine and holographic sensors are presented.

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Section: Nanosized Zeolitesmentioning

confidence: 99%

Section: Nanosized Zeolitesmentioning

confidence: 99%

Progress in zeolite synthesis promotes advanced applications

Zaarour

Dong

Naydenova³

et al. 2014

Microporous and Mesoporous Materials

156

View full text Add to dashboard Cite

show abstract

“…MSNs can be synthesized through several approaches such as a modified Stöber method, fast-self assembly, soft and hard templating, dissolving-reconstruction and modified aerogels [8,9]. However, among all these syntheses, the modified Stöber method is most frequently utilized.…”

Section: Introductionmentioning

confidence: 99%

Monodispersed mesoporous silica nanospheres based on pyridinium ionic liquids

2018

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In the past decades, ionic liquids (ILs) have garnered a lot of attention especially in the field of green chemistry due to their unique properties which help to solve the problems posed by organic solvents. Interestingly, their applications are not limited to that only as ILs have the potential to become alternative templates in the development of mesoporous silica nanoparticles (MSNs). This work reported the usage of a series of pyridinium ILs as template in the synthesis of monodispersed mesoporous silica nanosphere (MNSs) via two methods. Both syntheses utilize triethanolamine (TEA) as the base catalyst where in one method the TEA undergoes pre-treatment process while the other did not. Besides that, the effects of pyridinium ILs alkyl chain length were also investigated. MNSs generated via both methods exhibit spherical morphology and decreasing average particles size with increasing alkyl chain length of pyridinium ILs. The MNSs porosity were further analyzed through nitrogen sorption analysis where the surface area were in between 71.85 and 525.02 m 2 g −1 and the pore volume was up to 1 cm 3 g −1 .

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“…1,2 For example, porous carbon, Ni 1·5 Co 1·5 S 4 , aluminum oxide (Al 2 O 3 ), magnesium oxide (MgO) and copper (II) oxide (CuO) have been fabricated with excellent performance. [3][4][5][6][7] Among them, porous copper (II) oxide, as an important p-type semiconductor with a narrow bandgap(1·2 eV), has attracted much attention due to its low cost, high stability and non-toxicity.…”

Section: Introductionmentioning

confidence: 99%

Preparation of porous Mn-doped CuO microplates and enhanced adsorption performance

LiYao-yin

WangXin-yue

ZhuJian-fei

et al. 2017

Surface Innovations

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Porous manganese (Mn)-doped copper (II) oxide (CuO) microplates were synthesized by a facile hydrothermal method. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller N 2 adsorption-desorption analysis and Fourier transform infrared spectroscopy. It is shown that the morphologies of samples can be transformed from hierarchical porous microspheres to microplates by doping with manganese ions. The manganese-doped copper (II) oxide (10%) has a wide pore size distribution from micropore to macropore, and its surface area is 16·82 m 2 /g, which is 2·4 times that of copper (II) oxide microspheres (6·92 m 2 /g). It shows excellent adsorption properties for potassium ethyl xanthate. The saturated adsorption capacity of porous manganese-doped copper (II) oxide (10%) microplates for potassium ethyl xanthate is 5219 mg/g, which is 6·4 times that of copper (II) oxide microspheres (813 mg/g). The excellent adsorption property is mainly attributed to the intrinsic structure and the large specific surface area. This approach is expected to be extended to the preparation of other porous materials.Langmuir constrants m mass of the sample (g) q e adsorption capacity (mg/g) V volume of solution

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Porous Nanosized Particles: Preparation, Properties, and Applications

Cited by 531 publications

References 325 publications

Progress in zeolite synthesis promotes advanced applications

Progress in zeolite synthesis promotes advanced applications

Monodispersed mesoporous silica nanospheres based on pyridinium ionic liquids

Preparation of porous Mn-doped CuO microplates and enhanced adsorption performance

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