Boron-rich boron carbide from soot: a low-temperature green synthesis approach

Swapna, M. S.; Devi, H. V. Saritha; Sankararaman, S.

doi:10.1007/s43207-020-00066-5

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…The XRD pattern of the chlorinated B-CNTs showed additional diffraction peaks together with the graphitic peaks at 30 and 50 °, which revealed that boron was successfully incorporated into the CNTs (Figure 5A). The peaks corresponding to boron carbide (B 8 C) were observed at 19.2, 28, 32, 36, 45, 48, and 51 with lattice planes (800), ( 901), ( 841), ( 461), ( 090), (1,080), and (1831), respectively (JCPDS card no: 00-026-0232) (Swapna et al, 2020).…”

Section: Figurementioning

confidence: 99%

Nitrogen inclusion in carbon nanotubes initiated by boron doping and chlorination: Their use as electrocatalysts for oxygen reduction reaction

Maboya

Maubane‐Nkadimeng

Jijana³

et al. 2022

Front. Mater.

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The use of carbon nanostructures doped with heteroatoms as electrocatalysts for oxygen reduction reaction (ORR) has attracted intense research in recent years because they are highly conductive, have good durability, and are highly electro-active. One of the strategies to modify the characteristics of carbon nanomaterials (CNMs) to render them suitable for certain applications is to dope them with boron (B) and nitrogen (N). The effect of doping CNMs with boron has been a subject of little study, and hence, it is not well understood, as compared to nitrogen doping studies. In this study, nitrogen was unintentionally doped into carbon nanotubes (CNTs) by chlorination and decomposition of triphenylborane in a catalytic vapor deposition (CVD) reactor. N-doping resulted from the use of nitrogen as a carrier gas. Microscopic and spectroscopic techniques revealed that N bonding of carbon nanostructures together with the presence of defects played pivotal roles in determining the extent of ORR performance of produced CNMs. The introduction of N in the carbon matrix during B molecule decomposition resulted in the reduction in the amount of B doped into the matrix, due to competitive incorporation of N which inhibited B introduction. The presence of pyridinic N species was responsible for a 2e− ORR performance.

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Section: Figurementioning

confidence: 99%

Nitrogen inclusion in carbon nanotubes initiated by boron doping and chlorination: Their use as electrocatalysts for oxygen reduction reaction

Maboya

Maubane‐Nkadimeng

Jijana³

et al. 2022

Front. Mater.

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“…Synthesis methods, crystal structure, and sintering of boron carbide were extensively studied [ 3 , 26 ]. It can be synthesized from its elements at high temperatures and pressures [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Optimum pyrolysis conditions to prepare the most crystalline boron carbide powder from boric acid–mannitol complex ester

PEKDEMİR,

ÖNAL,

SARIKAYA

2023

Turkish Journal of Chemistry

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A weak acidic complex ester (CE) in solid form was prepared by a condensation reaction between very weak boric acid (BA: H 3 BO 3 ) and (D)-mannitol (MA: C 6 H 14 O 6 ) by the molar ratio of BA/MA = 2. A boron carbide (B 4 C) precursor was obtained from heating of the CE at 400 °C for 4 h. The precursor was pyrolyzed under argon flow in the interval of 1300–1550 °C for 4 h and at 1400 °C for 1–4 h, respectively. The materials were examined using several techniques such as X-ray diffraction analysis, thermal analysis, scanning electron microscopy, particle size distribution, and nitrogen adsorption/desorption. The optimum pyrolysis temperature and duration were 1400 °C and 4 h, respectively. The most crystalline B 4 C particles were distributed between 1 and 100 μm with a mean particle size of 20 μm. The specific surface area and specific pore volume were 13.5 m 2 g −1 and 0.09 cm 3 g −1 , respectively. The size of the pores was between 2 and 36 nm with a mean size of 14 nm.

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RF-sputtered boron carbide thin film for UVB and UVC shielding: a greener approach

Devi

Krishna

Swapna

et al. 2022

J Mater Sci: Mater Electron

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Boron-rich boron carbide from soot: a low-temperature green synthesis approach

Cited by 5 publications

References 37 publications

Nitrogen inclusion in carbon nanotubes initiated by boron doping and chlorination: Their use as electrocatalysts for oxygen reduction reaction

Nitrogen inclusion in carbon nanotubes initiated by boron doping and chlorination: Their use as electrocatalysts for oxygen reduction reaction

Optimum pyrolysis conditions to prepare the most crystalline boron carbide powder from boric acid–mannitol complex ester

RF-sputtered boron carbide thin film for UVB and UVC shielding: a greener approach

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