The preparation of high-adsorption, spherical, hexagonal boron nitride by template method

Zhang, Ning; Liu, Huan; Kan, Hong Min; Wang, Xiaoyang; Long, Haibo; Zhou, Yonghui

doi:10.1016/j.jallcom.2014.05.161

Cited by 19 publications

(15 citation statements)

References 8 publications

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“…The shape of PCB however changes in the presence of surfactant depending on surfactant type. For the PCB synthesized with TW20, it produces a macroporous honeycomb structure due to the hexagonal formation of TW20 . The carbazole monomers are attracted to each hexagonal micelle.…”

Section: Resultsmentioning

confidence: 99%

“…The carbazole monomers are attracted to each hexagonal micelle. For the PCB synthesized with CTAB, it produces a connected hollow sphere structure because the reverse micelles generate some pore spaces within the system and produce a fusion and aggregation of the hollow spheres . For the PCB synthesized with SDS, it produces small hollow spheres due to the vesicles formed from carbazole micelles.…”

Section: Resultsmentioning

confidence: 99%

“…In a system with CTAB concentration equal to the CMC (monomer‐to‐CTAB mole ratio of 1:0.0068; Fig. (c)), the CTAB molecules form reverse micelles . The formation of the spherical PCB occurs outside the reverse micelles.…”

Section: Resultsmentioning

confidence: 99%

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Polycarbazole by chemical oxidative interfacial polymerization: morphology and electrical conductivity based on synthesis conditions

Sangwan

Paradee

Sirivat

2016

Polymer International

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Polycarbazole (PCB) was synthesized via an interfacial polymerization method using carbazole monomer and ammonium persulfate as the oxidizing agent. The effects of surfactant type (non‐ionic Tween 20, cationic cetyltrimethylammonium bromide (CTAB) and anionic sodium dodecylsulfate) and concentration on the synthesized PCB were investigated based on the roles of micelle formation. Electron microscopy images revealed various PCB morphologies depending on the surfactant type and concentration. The newly found morphological structures of the PCB were macroporous honeycomb, connected hollow sphere and smaller hollow sphere depending on the surfactant type. The highest electrical conductivity of doped PCB_CTAB obtained was 11.3 ± 0.36 S cm−1. The electrical conductivity values of the doped PCB synthesized with CTAB were higher than that without a surfactant by three orders of magnitude. © 2016 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Polycarbazole by chemical oxidative interfacial polymerization: morphology and electrical conductivity based on synthesis conditions

Sangwan

Paradee

Sirivat

2016

Polymer International

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“…[67,142] The template method can achieve a perfect copy of the original template topography. [143] A typical example is that Wang et al [144] recently used biomass such as dandelion, pappus fiber and fleabane flower as carbon source templates, and B 2 O 3 as boron source, which were placed on the up and low layers of separable graphite crucible, through bottom-up passage of 2 L/min N 2 and reaction at 1500°C for 5 h, the BN nanomaterials with the original biomass morphologies were successfully prepared. The experimental device and the obtained morphology of BN are shown in Figure 9.…”

Section: Template Methodsmentioning

confidence: 99%

“…The characteristic of template method is that some materials with specific structures are used as template agents, the precursor is mixed with the template agent, and the target product is obtained by etching the template at a high temperature [67,142] . The template method can achieve a perfect copy of the original template topography [143] . A typical example is that Wang et al [144] .…”

Section: The Synthetic Methods For Boron Nitride Nanomaterialsmentioning

confidence: 99%

The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Pan

Liu

et al. 2020

The Chemical Record

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Due to special non-metallic polar bond between the III group (with certain metallic properties) element boron (B) and the V group element nitrogen (N), boron nitride (BN) has unique physical and chemical properties such as strong high-temperature resistance, oxidation resistance, heat conduction, electrical insulation and neutron absorption. Its unique lamellar, reticular and tubular morphologies and physicochemical properties make it attractive in the fields of adsorption, catalysis, hydrogen storage, thermal conduction, insulation, dielectric substrate of electronic devices, radiation protection, polymer composites, medicine, etc. Therefore, the synthesis and properties of BN derived materials become the main research hotspots of lowdimensional nanomaterials. This paper reviews the synthetic methods, overall properties, and applications of BN nanostructures and nanocomposites. In addition, challenges and prospect of this kind of materials are discussed.

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Synthesis of Spherical Hexagonal Boron Nitride via Precursor Morphology Control

Nam,

Yun,

Cho

et al. 2024

Adv Eng Mater

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The growing demand for high‐performance semiconductors, driven by the advancement of emerging industries such as artificial intelligence (AI), necessitates the development of novel materials for thermal management. In this respect, hexagonal boron nitride (h‐BN) has emerged as a promising candidate due to its unique properties. However, challenges arise from its two‐dimensional layered structure, resulting in thermal transfer anisotropy and poor fluidity when mixed with polymers for thermal management. To address these challenges, researchers have attempted to fabricate h‐BN into spherical shapes. In this study, a two‐step synthesis method of spherical h‐BN (s‐BN) particles via control of the precursor morphology and a subsequent thermal reaction is proposed. Therefore, as‐fabricated s‐BN exhibits solid spherical shapes with a uniform size distribution, with a median particle size of 0.955 μm. These s‐BN particles, when integrated into epoxy resin, disperse homogeneously, forming efficient heat transfer networks that achieve a 138% improvement in thermal conductivity compared to h‐BN particles with similar diameters, even at lower viscosities. This can overcome the limitations found in the conventional particle shapes while preserving the advantages of h‐BN. Furthermore, it is anticipated that the s‐BN will be applied in thermal management systems, thereby accelerating advancements in electronic technology.

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The preparation of high-adsorption, spherical, hexagonal boron nitride by template method

Cited by 19 publications

References 8 publications

Polycarbazole by chemical oxidative interfacial polymerization: morphology and electrical conductivity based on synthesis conditions

Polycarbazole by chemical oxidative interfacial polymerization: morphology and electrical conductivity based on synthesis conditions

The Properties and Preparation Methods of Different Boron Nitride Nanostructures and Applications of Related Nanocomposites

Synthesis of Spherical Hexagonal Boron Nitride via Precursor Morphology Control

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