Effect of APC addition on precursors properties during synthesis of B4C nano powder by a sol–gel process

Najafi, Abolhassan; Golestani‐Fard, F.; Rezaie, Hamid Reza; Ehsani, N.

doi:10.1016/j.jallcom.2011.06.103

Cited by 28 publications

(18 citation statements)

References 21 publications

(24 reference statements)

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“…6 ), which correspond to out-of-plane B–N–B bending and in-plane B–N stretching vibrations, respectively [ 18 – 19 ]. The absorbance bands observed in the range of 800–1100 cm −1 were assigned to B–C and B–O–C bonds [ 20 – 22 ]. A small peak at 535 cm −1 in the FTIR spectrum of CVD BN/Ag HNMs ( Fig.…”

Section: Resultsmentioning

confidence: 99%

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

Firestein¹,

Leybo²,

Steinman³

et al. 2018

Beilstein J. Nanotechnol.

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BN/Ag hybrid nanomaterials (HNMs) and their possible applications as novel active catalysts and antibacterial agents are investigated. BN/Ag nanoparticle (NP) hybrids were fabricated using two methods: (i) chemical vapour deposition (CVD) of BN NPs in the presence of Ag vapours, and (ii) ultraviolet (UV) decomposition of AgNO 3 in a suspension of BN NPs. The hybrid microstructures were studied by high-resolution transmission electron microscopy (HRTEM), high-angular dark field scanning TEM imaging paired with energy dispersion X-ray (EDX) mapping, X-ray photoelectron spectroscopy (XPS), and infrared spectroscopy (FTIR). They were also characterized in terms of thermal stability, Ag + ion release, catalytic and antibacterial activities. The materials synthesized via UV decomposition of AgNO 3 demonstrated a much better catalytic activity in comparison to those prepared using the CVD method. The best catalytic characteristics (100% methanol conversion at 350 °C) were achieved using the UV BN/Ag HNMs without preliminary annealing at 600 °C in an oxidizing atmosphere. Both types of the BN/Ag HNMs possess a profound antibacterial effect against Escherichia coli K-261 bacteria.

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Section: Resultsmentioning

confidence: 99%

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

Firestein¹,

Leybo²,

Steinman³

et al. 2018

Beilstein J. Nanotechnol.

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“…From Figure 1, it can be seen that the sepiolite nanofibers after modification with the coupling agent ( -(2,3-epoxypropoxy)propyltrimethoxysilane) addition amount of 5% have the lowest surface free energy. When powders are dispersed into media, the lower the surface free energy, the better their dispersion [30][31][32]. According to the above analysis, 5% is selected as the coupling agent ( -(2,3-epoxypropoxy)propyltrimethoxysilane) addition amount for the sepiolite nanofibers in order to obtain the best modification effect of sepiolite nanofibers and the optimal properties of composite materials.…”

Section: Resultsmentioning

confidence: 99%

Effect of Modified Sepiolite Nanofibers on Properties of cis‐Polybutadiene Rubber Composite Nanomaterials

Wang

Feng²,

Tang

et al. 2013

Journal of Nanomaterials

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In order to use sepiolite nanofibers ascis-polybutadiene rubber fillers, the hydrophilic character of sepiolite nanofibers should be modified by grafting organic group and controlling surface free energy for improving compatibility of sepiolite nanofibers in rubber matrix. The relationship between the performance of thecis-polybutadiene rubber filled with sepiolite and the coupling modification was investigated, and the influence of coupling agentγ-(2,3-epoxypropoxy)propyltrimethoxysilane dosage on mechanical properties ofcis-polybutadiene rubber materials was also studied. The results showed that the mechanical properties could be improved obviously after reinforcement by modified sepiolite nanofibers. The optimum dosage of coupling agentγ-(2,3-epoxypropoxy)propyltrimethoxysilane was 7%, and the tensile strength and tearing strength increased by 108.3% and 74.1%, respectively. On this basis, the reinforcement mechanism of the composite rubber materials was also discussed.

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“…The group of authors synthesized nanoparticles 12,13 and nanowhiskers 14 of boron carbide, using phenolic resin and trimethylborate as the starting materials. It was prepared a multicomponent system of "water-solvent (DMF) -catalyst (HCl) -dispergator (ammonium polycarboxylate)" type.…”

Section: Authorsmentioning

confidence: 99%

Issues of Carbothermic Synthesis of Submicron and Nanostructured Boron Carbide (A Review)

Antipov¹,

Antipova²,

Wozniak³

et al. 2016

Orient. J. Chem

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This review shows the important role of nanoscale and submicron boron carbide B4C for modern science and technology. Various procedures of the carbothermic synthesis of nanoscale and submicron forms of boron carbide are reviewed and compared. The paper shows the variety of possible forms and morphology of the products. Particular attention is paid to the influence of the synthesis method on the content of residual free carbon in the product.

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Effect of APC addition on precursors properties during synthesis of B4C nano powder by a sol–gel process

Cited by 28 publications

References 21 publications

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents

Effect of Modified Sepiolite Nanofibers on Properties of cis‐Polybutadiene Rubber Composite Nanomaterials

Issues of Carbothermic Synthesis of Submicron and Nanostructured Boron Carbide (A Review)

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