Shape-Controlled Synthesis of Hollow Silica Colloids

Wang, Yong; Su, Xiaowen; Ding, Panshuang; Lü, Shuang; Yu, Huaping

doi:10.1021/la402769u

Cited by 60 publications

(50 citation statements)

References 35 publications

(56 reference statements)

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“…Several synthetic routes have been reported to fabricate particles with non‐spherical geometries. These approaches make use of self‐assembly,2 photolithography,3 microfluidics,4 non‐wetting template molding,5 stretching polymer‐embedded particle films,6 thermal sintering of spherical particles at an oil–water interface,7 template methods,1g, 8 metal–organic frameworks,9 and seeded emulsion polymerization 10. Collectively, these methods have produced particles of several distinct shapes, including metal‐based polyhedral particles.…”

mentioning

confidence: 78%

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

2014

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Particle shape is a critical parameter that plays an important role in self-assembly, for example, in designing targeted complex structures with desired properties. Over the last decades, an unprecedented range of monodisperse nanoparticle systems with control over the shape of the particles have become available. In contrast, the choice of micrometersized colloidal building blocks of particles with flat facets, that is, particles with polygonal shapes, is significantly more limited. This can be attributed to the fact that in contrast to nanoparticles, the larger colloids are significantly harder to synthesize as single crystals. It is now shown that a very simple building block, such as a micrometer-sized polymeric spherical colloidal particle, is already enough to fabricate particles with regularly placed flat facets, including completely polygonal shapes with sharp edges. As an illustration that the yields are high enough for further self-assembly studies, the formation of three-dimensional rotator phases of fluorescently labelled, micrometer-sized, and charged rhombic dodecahedron particles was demonstrated. This method for fabricating polyhedral particles opens a new avenue for designing new materials.

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confidence: 78%

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

2014

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“…Silica hollow cubes were prepared as described in our previous study [27]. The synthesis of silica hollow cubes was achieved by a solution process using the pre-fabricated hematite colloidal cubes as sacrificial templates.…”

Section: Preparation Of Silica Hollow Cubesmentioning

confidence: 99%

“…Recently, our group has reported the synthesis of hollow silica cubes [27]. In this work, the as-prepared hollow silica cubes are used as effective sacrificial templates to synthesize MnO 2 hollow cubes with nanosheets as the in situ formed building units (Fig.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and lithium storage properties of MnO2 hierarchical hollow cubes

Wang

Ding

Wang

2016

Journal of Alloys and Compounds

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“…27 The synthesis of hollow silica colloids with different shapes, including hollow peanuts, hollow capsules and hollow pseudocubes, was achieved by a solution process using the prefabricated hematite colloidal particles with different shapes as sacricial templates. Silica hollow colloids with different shapes were prepared as described in our previous study.…”

Section: Preparation Of Silica Hollow Colloids With Different Shapesmentioning

confidence: 99%

Shape-controlled synthesis and lithium storage properties of SnO₂ nonspherical hollow structures

Wang

Ding

2015

RSC Adv.

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In this work, a variety of uniform SnO 2 nonspherical hollow structures, such as peanuts, capsules and pseudocubes, can be synthesized by using monodisperse hollow silica nonspherical colloids with different shapes as templates. The method is based on a polycrystalline SnO 2 coating on the surface of the hollow silica colloidal template with different shapes and the sequential HF-dissolution of the silica. It is noted that the shapes of these SnO 2 nonspherical hollow structures are similar to those of the colloidal templates. By virtue of the hollow interior voids, the SnO 2 hollow structures with different shapes exhibit improved lithium storage properties compared to SnO 2 solid spheres. Electronic supplementary information (ESI) available: FESEM and TEM images of monodisperse SiO 2 hollow colloids with different shapes; EDX spectra and TEM images of double-shelled SiO 2 @SnO 2 hollow structures with different shapes; EDX spectra and TEM images of SnO 2 hollow structures with different shapes; TEM, SAED and HRTEM images of SnO 2 solid spheres and SnO 2 hollow structures with different shapes; Coulombic efficiency of SnO 2 solid spheres and SnO 2 hollow structures with different shapes; SEM images of SnO 2 hollow structures with different shapes aer 60 cycles. See

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Shape-Controlled Synthesis of Hollow Silica Colloids

Cited by 60 publications

References 35 publications

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

Fabrication and lithium storage properties of MnO2 hierarchical hollow cubes

Shape-controlled synthesis and lithium storage properties of SnO₂ nonspherical hollow structures

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Shape-Controlled Synthesis of Hollow Silica Colloids

Cited by 60 publications

References 35 publications

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

Fabrication of Polyhedral Particles from Spherical Colloids and Their Self‐Assembly into Rotator Phases

Fabrication and lithium storage properties of MnO2 hierarchical hollow cubes

Shape-controlled synthesis and lithium storage properties of SnO2 nonspherical hollow structures

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Shape-controlled synthesis and lithium storage properties of SnO₂ nonspherical hollow structures