Hierarchical mesoporous SrCO3 submicron spheres derived from reaction-limited aggregation induced “rod-to-dumbbell-to-sphere” self-assembly

Zhu, Wancheng; Zhang, Guanglei; Li, Jing; Zhang, Qiang; Piao, Xianglan; Zhu, Shenlin

doi:10.1039/b923169b

Cited by 24 publications

(22 citation statements)

References 81 publications

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“…The BET specific surface area is 14.9 m 2 g −1 , which is smaller than those of the mesoporous SrCO 3 [15] and hierarchical mesoporous SrCO 3 submicron spheres [16]. The reason can be ascribed to the relative larger diameter of the constructing particles and the larger total pore volume of 0.18 cm 3 g −1 .…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Lin

Tong

et al. 2012

Nanoscale Res Lett

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Highly dispersive strontium carbonate (SrCO3) nanostructures with uniform dumbbell, ellipsoid, and rod-like morphologies were synthesized in methanol solution without any additives. These SrCO3 were characterized by X-ray diffraction, field emission scanning electron microscopy, and N2 adsorption-desorption. The results showed that the reaction temperature and the methanol/water ratio had important effects on the morphologies of SrCO3 particles. The dumbbell-like SrCO3 exhibited a Broader-Emmett-Teller surface area of 14.9 m2 g−1 and an average pore size of about 32 nm with narrow pore size distribution. The formation mechanism of the SrCO3 crystal was preliminary presented.

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Section: Resultsmentioning

confidence: 99%

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Lin

Tong

et al. 2012

Nanoscale Res Lett

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“…As a consequence, peanut-like β-FeOOH/α-Fe 2 O 3 assemblies were obtained (Figure 5b). This process was very analogous to the ‘rod-to-dumbbell-to-sphere’ transformation phenomenon, which had been found in the formation of some other hierarchical architectures, such as carbonates (CaCO 3 , BaCO 3 , SrCO 3 , MnCO 3 , CdCO 3 ) [8,54,55], fluoroapatite (Ca 5 (PO 4 ) 3 OH) [56], etc. Like the dumbbell transition structure, the present peanut-type assembly was also believed to be formed due to the reaction-limited aggregation.…”

Section: Resultsmentioning

confidence: 65%

“…Mesoporous materials are generally synthesized via a soft- or hard-template-aided process, which usually, however, suffers from the removal of templates and resultant structural collapse, although hydrothermal synthesis or treatment has been extensively investigated at various stages with the attempt to improve the hydrothermal stability of the as-synthesized mesoporous products. Consequently, great effort has been made to directly grow mesoporous inorganic materials in the absence of any templates in recent years [7,8]. Most recently, the hydrothermal method has emerged as a thriving technique for the facile fabrication of the nanoarchitectures [9-12], such as AlOOH cantaloupe [13], Co(OH) 2 and Co 3 O 4 nanocolumns [14], ZnSe nanoflowers [15], Ni(OH) 2 and NiO microspheres [16], and even mesoporous SrCO 3 microspheres [8].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures

et al. 2013

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Hollow or porous hematite (α-Fe2O3) nanoarchitectures have emerged as promising crystals in the advanced materials research. In this contribution, hierarchical mesoporous α-Fe2O3 nanoarchitectures with a pod-like shape were synthesized via a room-temperature coprecipitation of FeCl3 and NaOH solutions, followed by a mild hydrothermal treatment (120°C to 210°C, 12.0 h). A formation mechanism based on the hydrothermal evolution was proposed. β-FeOOH fibrils were assembled by the reaction-limited aggregation first, subsequent and in situ conversion led to compact pod-like α-Fe2O3 nanoarchitectures, and finally high-temperature, long-time hydrothermal treatment caused loose pod-like α-Fe2O3 nanoarchitectures via the Ostwald ripening. The as-synthesized α-Fe2O3 nanoarchitectures exhibit good absorbance within visible regions and also exhibit an improved performance for Li-ion storage with good rate performance, which can be attributed to the porous nature of Fe2O3 nanoarchitectures. This provides a facile, environmentally benign, and low-cost synthesis strategy for α-Fe2O3 crystal growth, indicating the as-prepared α-Fe2O3 nanoarchitectures as potential advanced functional materials for energy storage, gas sensors, photoelectrochemical water splitting, and water treatment.

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“…7(a 1 , b 1 )) on one hand and further growth of the constitutional nanorods during the high-temperature annealing on the other hand. 48 The BET surface area of the present hierarchical γ-BaB 2 O 4 hollow microspheres was somehow smaller than that of the hierarchical porous MgBO 2 (OH) microspheres (57.22 m 2 g -1 ), 6 whereas larger than that of the porous Ca(BO 2 ) 2 microspheres (42.7 m 2 g -1 ), 12 flower-like Bi 2 MoO 6 hollow spheres (40.0 m 2 g -1 ), 36 CoFe 2 O 4 microspheres (32.3 m 2 g -1 ), 37 and SrCO 3 submicron spheres (40.2 m 2 g -1 ), 38 suggesting potential applications of the present hollow microspheres in catalysis, adsorption and etc. Fig.…”

Section: Hierarchical Porous Structure Of the γ-Bab 2 O 4 And β-Bab 2mentioning

confidence: 99%

Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

Chen

Zhai

et al. 2016

RSC Adv.

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Three-dimensional (3D) hierarchical metal borates nanoarchitectures have attracted extensive concern for their wide employment owing to the versatile compositions and unique properties, whose rational design and facile synthesis with high uniformity and complex interiors have been long remained a great challenge. In this contribution, hierarchical γ-BaB 2 O 4 hollow microspheres assembled by one-dimensional (1D) nanorods were successfully synthesized by a facile ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) assisted hydrothermal method (180 ºC, 12 h), using Ba(OH) 2 ·8H 2 O and H 3 BO 3 as the raw materials. The effects of process parameters were investigated in detail, and based on which a feasible formation mechanism was proposed. The hierarchical γ-BaB 2 O 4 hollow microspheres exhibited a specific surface area of 46.25 m 2 g -1 . The subsequent mild phase conversion (700 ºC, 3.0 h) led to the β-BaB 2 O 4 hollow microspheres with well-preserved spherical morphology and high crystallinity, indicating the hierarchical γ-BaB 2 O 4 and β-BaB 2 O 4 hollow microspheres of excellent thermostability. Both the hierarchical γ-BaB 2 O 4 and β-BaB 2 O 4 hollow microspheres exhibited a transparent characteristic from the ultraviolet to the visible region. Moreover, when employed as adsorbents, the hierarchical γ-BaB 2 O 4 hollow microspheres presented satisfactory adsorption properties for the removal of Pb 2+ from mimic waste water, suggesting that the great potential applications of the 3D * Corresponding authors. Tel.2 hierarchical porous or hollow nanoarchitectures of metal borates in future.

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Hierarchical mesoporous SrCO3 submicron spheres derived from reaction-limited aggregation induced “rod-to-dumbbell-to-sphere” self-assembly

Cited by 24 publications

References 81 publications

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures

Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

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Hierarchical mesoporous SrCO3 submicron spheres derived from reaction-limited aggregation induced “rod-to-dumbbell-to-sphere” self-assembly

Cited by 24 publications

References 81 publications

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Facile synthesis of SrCO3 nanostructures in methanol/water solution without additives

Hydrothermal evolution, optical and electrochemical properties of hierarchical porous hematite nanoarchitectures

Hierarchical γ-BaB2O4 hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

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Hierarchical γ-BaB₂O₄ hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents