Synthesis and characterization of boron carbon oxynitride films with tunable composition using methane, boric acid and ammonia

Matsoso, Boitumelo J.; Ranganathan, K.; Mutuma, Bridget K.; Lerotholi, T. J.; Jones, Glenn; Coville, Neil J.

doi:10.1039/c7nj01886j

Cited by 106 publications

(72 citation statements)

References 48 publications

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“…The D' peak is ascribed to the lattice vibration mode of the G peak at the surface of the carbon structure [31,32]. A similar D' peak has also been observed in boron carbon oxynitride films due to lattice distortions [33]. The existence of amorphous carbon in the nanomaterials was nonetheless further confirmed from the Raman spectra as shown in Figure 2 with the characteristic D, G and D' bands.…”

Section: Resultssupporting

confidence: 63%

“…The D' peak is ascribed to the lattice vibration mode of the G peak at the surface of the carbon structure [31,32]. A similar D' peak has also been observed in boron carbon oxynitride films due to lattice distortions [33]. The high ID/IG ratio of the C-V2NO@800 °C recorded in Table 1 suggests that the presence of defects could result from the nitrogen incorporated in the carbon lattice and also the strong interaction between the metal oxynitride and the carbon.…”

Section: Resultssupporting

confidence: 54%

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Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

et al. 2019

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In this work, porous carbon-vanadium oxynitride (C-V 2 NO) nanostructures were obtained at different nitridation temperature of 700, 800 and 900 • C using a thermal decomposition process. The X-ray diffraction (XRD) pattern of all the nanomaterials showed a C-V 2 NO single-phase cubic structure. The C-V 2 NO obtained at 700 • C had a low surface area (91.6 m 2 g −1 ), a moderate degree of graphitization, and a broader pore size distribution. The C-V 2 NO obtained at 800 • C displayed an interconnected network with higher surface area (121.6 m 2 g −1 ) and a narrower pore size distribution. In contrast, at 900 • C, the C-V 2 NO displayed a disintegrated network and a decrease in the surface area (113 m 2 g −1 ). All the synthesized C-V 2 NO yielded mesoporous oxynitride nanostructures which were evaluated in three-electrode configuration using 6 M KOH aqueous electrolyte as a function of temperature. The C-V 2 NO@800 • C electrode gave the highest electrochemical performance as compared to its counterparts due to its superior properties. These results indicate that the nitridation temperature not only influences the morphology, structure and surface area of the C-V 2 NO but also their electrochemical performance. Additionally, a symmetric device fabricated from the C-V 2 NO@800 • C displayed specific energy and power of 38 W h kg −1 and 764 W kg −1 , respectively, at 1 A g −1 in a wide operating voltage of 1.8 V. In terms of stability, it achieved 84.7% as capacity retention up to 10,000 cycles which was confirmed through the floating/aging measurement for up to 100 h at 10 A g −1 . This symmetric capacitor is promising for practical applications due to the rapid and easy preparation of the carbon-vanadium oxynitride materials.

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Section: Resultssupporting

confidence: 63%

“…The D' peak is ascribed to the lattice vibration mode of the G peak at the surface of the carbon structure [31,32]. A similar D' peak has also been observed in boron carbon oxynitride films due to lattice distortions [33]. The high ID/IG ratio of the C-V2NO@800 °C recorded in Table 1 suggests that the presence of defects could result from the nitrogen incorporated in the carbon lattice and also the strong interaction between the metal oxynitride and the carbon.…”

Section: Resultssupporting

confidence: 54%

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

et al. 2019

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“…From Table 1 it can be observed that doping with boron and nitrogen atoms increased the defect density ratio (I D /I G ; 0.97) value in comparison with the moderate degree of graphitization of the CSs (i.e., I D /I G ≈ 0.91). This can be attributed to the presence of more defects associated with the incorporation of B and N atoms into the carbon structure [58,59]. A shift in the G bands of activated CSs and BN-CSs with respect to the non-activated CSs can be ascribed to structural defects [60] incorporated in the carbon matrix resulting in an increase in the I D /I G ratio values to 0.98 and 1.04, respectively (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Deciphering the Structural, Textural, and Electrochemical Properties of Activated BN-Doped Spherical Carbons

et al. 2019

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In this study, the effect of K2CO3 activation on the structural, textural, and electrochemical properties of carbon spheres (CSs) and boron and nitrogen co-doped carbon spheres (BN-CSs) was evaluated. Activation of the CSs and BN-CSs by K2CO3 resulted in increased specific surface areas and ID/IG ratios. From the X-ray photoelectron spectroscopy (XPS) results, the BN-CSs comprised of 64% pyridinic-N, 24% pyrrolic-N and 7% graphitic-N whereas the activated BN-CSs had 19% pyridinic-N, 40% pyrrolic-N and 22% graphitic-N displaying the effect of activation on the type of N configurations in BN-CSs. A possible BN-co-doping and activation mechanism for the BN-CSs is proposed. Electrochemical analysis of the electrode materials revealed that BN doping, carbon morphology, structure, and porosity played a crucial role in enhancing the capacitive behavior of the CSs. As a proof of concept, a symmetric device comprising the activated BN-CSs displayed a specific power of 800 W kg−1 at a specific current of 1 A g−1 within an operating cell potential of 1.6 V in a 3 M KNO3 electrolyte. The study illustrated for the first time the role of K2CO3 activation in influencing the physical and surface properties of template-free activated BN-CSs as potential electrode materials for energy storage systems.

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“…By the 500°C anneal the boron has become fully oxidised by forming B 2 O 3 . The corresponding component peaks in both the B 1s (193.3 eV) and O 1s (532.9eV) are now in the correct binding energy position for B 2 O 3 [9,10].…”

Section: A Characterisation Of Eld Co Filmsmentioning

confidence: 99%

“…Initial data from the as-received sample reveals the Si to Fig.4 The normalised N 1s and C 1s, show a deterioration in the signal to noise for the N 1s and the decomposition of the C 1s with increasing anneal temperature comprise of several different components which have been assigned to the bulk Si at 1839.1 eV, two Co silicide phases, one at 1839.5eV and the other at 1838.7eV, SiO 2 at 1843.7eV and sub oxide states on the HBE side of the bulk peak. The silicide phase on the HBE side has been attributed to CoSi [9,10] while the silicide on the LBE side has been attributed to Co 2 Si [11,12]. There is also a "pre-peak" observed on the LBE side.…”

Section: B the Si-co Interfacementioning

confidence: 99%

Characterisation of Electroless Deposited Cobalt by Hard and Soft X-ray Photoemission Spectroscopy

O’Connor

Armini

Selvaraju

et al. 2018

2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO)

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Electroless deposited (ELD) cobalt with palladium as a catalyst, and an underlying self-assembled monolayer (SAM) was investigated for potential use in advanced complementary metal oxide semiconductor (CMOS) applications using both hard (HAXPES) and soft (XPS) x-ray photoelectron spectroscopy. HAXPES spectra established the uniformity of the deposited Co film and the nature of the buried Co-Si interface ~20nm below the surface. The Pd is seen to diffuse through the Co following thermal annealing. While the deposited Co film is predominantly metallic, Co-silicide forms at the Co-Si interface upon deposition and decomposes with thermal anneal up to 500°C.

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Synthesis and characterization of boron carbon oxynitride films with tunable composition using methane, boric acid and ammonia

Abstract: This study highlights the synthesis and characterization of 2D BCNO films using the atmospheric pressure CVD technique.

Cited by 106 publications

References 48 publications

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

Nitridation Temperature Effect on Carbon Vanadium Oxynitrides for a Symmetric Supercapacitor

Deciphering the Structural, Textural, and Electrochemical Properties of Activated BN-Doped Spherical Carbons

Characterisation of Electroless Deposited Cobalt by Hard and Soft X-ray Photoemission Spectroscopy

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