Reaction mechanisms of nano-sized AlN powders synthesized from dicyandiamide and its optical property

Cheng, Yong; Li, Kexu; Wei, Shihong; Zhang, Hainan; Yang, Shengkai; Huang, Xin; Lin, Sidney; Plucknett, Kevin P.; Lin, Hua‐Tay

doi:10.1016/j.matchemphys.2020.123376

Cited by 12 publications

(6 citation statements)

References 34 publications

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“…[40] The binding energies of 73 eV for Al 2p3/2 and 76.8 eV for Al 2p1/2 were detected in the study. [41] The appearance of a characteristic double-peak structure in the XPS spectra may be ascribed to spin-orbit interaction at the atomic level, which causes the separation of the 2p3/2 and 2p1/2 peaks. This discovery is congruent with Näslund et al's [42] findings, emphasizing the significance of a solid grasp of the underlying concepts of XPS for appropriate data processing and interpretation.…”

Section: Surficial and Elemental Characterizationmentioning

confidence: 99%

Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition

Gul,

Ahmad,

Thomas

et al. 2024

Can J Chem Eng

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The objective of this study is to thoroughly investigate the synthesis and application of a thin film MnS2:CoS:Al2S3. To produce the thin film, diethyldithiocarbamate as a source of sulphur through a technique called physical vapour deposition was utilized. A wide range of analytical techniques were used to examine the structural, morphological, and optical properties of the fabricated material. X‐ray diffraction (XRD) analysis revealed the crystallite size 26.4 nm with a crystallinity of 77%. The optical properties determined the band gap energy to be 4.02 eV. Cabbage‐like assemblies were confirmed through scanning electron microscopy (SEM). X‐ray photoelectron spectroscopy unveiled distinct core level peaks associated with Mn 2p, Al 2p, Co 2p, and S 2p. To evaluate the electrochemical properties of the material, voltammetry measurements were conducted. The results from these experiments revealed an exceptional specific capacitive performance with a value of 792.6 Fg−1. This outstanding performance, coupled with the notable stability of the thin film during multiple cycles, positions it as a highly promising candidate for various energy storage applications. Furthermore, an extensive investigation was carried out to assess the photocatalytic capabilities of the fabricated material. Its efficiency in degrading different environmental pollutants was carefully evaluated.

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Section: Surficial and Elemental Characterizationmentioning

confidence: 99%

Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition

Gul,

Ahmad,

Thomas

et al. 2024

Can J Chem Eng

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“…The morphologies of these nanostructures can be finely tuned with the simple adjustment of the process conditions such as the reaction time, the reaction temperature and the reaction pressure [ 56 ]. In a typical synthesis of MNs, thermal annealing of metal oxide or other forms of the metal precursor is carried out in the presence of nitrogen-rich precursors (gases) such as ammonia [ 57 ], urea [ 58 ], and dicyanamide [ 59 , 60 ]. These metal oxides or other precursors are usually synthesized using hydrothermal [ 61 ], sol-gel [ 62 ], chemical precipitation [ 43 ], electrospinning [ 63 , 64 ], electrodeposition [ 65 ], or solvothermal methods [ 66 ].…”

Section: Synthesis Of Mnsmentioning

confidence: 99%

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Gujral

Singh

Baskar

et al. 2022

Science and Technology of Advanced Materials

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The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.

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“…[22][23][24][25][26] These experiments usually use Al(NO 3 ) 3 as the aluminum source, urea or citric acid as the fuel, and glucose as the carbon source to prepare AlN nanopowder through redox reaction. [27][28][29][30] However, the thermal decomposition process of urea is very complex, 31 and it cannot be completely decomposed before 750 • C. At the same time, it is easy to produce some white crystals during citric acid decomposition, which brings some difficulties to powder dispersion.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, a new type called low‐temperature combination synthesis has been adopted, and the prepared AlN has a small and uniform particle size 22–26 . These experiments usually use Al(NO 3 ) 3 as the aluminum source, urea or citric acid as the fuel, and glucose as the carbon source to prepare AlN nanopowder through redox reaction 27–30 . However, the thermal decomposition process of urea is very complex, 31 and it cannot be completely decomposed before 750°C.…”

Section: Introductionmentioning

confidence: 99%

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

Wang

et al. 2023

Int J Applied Ceramic Tech

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Uniformly dispersed nano‐sized aluminum nitride powders were prepared by the sol–gel foaming method using aluminum nitrate as the aluminum source, sucrose as the carbon source, and ammonium chloride as the foaming agent. The effects of ammonium chloride content on the particle size and the sintering properties of aluminum nitride were investigated. The results showed that when the molar ratio of ammonium chloride to aluminum nitrate was .5, the colloidal foams were uniform, large, and fluffy, and amorphous alumina precursors with uniform particles could be prepared. Aluminum nitride powder with a particle size of 22–27 nm can be obtained by calcining these precursors in nitrogen atmosphere at 1400°C for 2 h. At the same time, aluminum nitride bulk material with a relative density of 95% can be obtained by sintering the compact samples in nitrogen atmosphere at 1700°C for 2 h.

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Reaction mechanisms of nano-sized AlN powders synthesized from dicyandiamide and its optical property

Cited by 12 publications

References 34 publications

Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition

Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

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Reaction mechanisms of nano-sized AlN powders synthesized from dicyandiamide and its optical property

Cited by 12 publications

References 34 publications

Empowering energy‐water nexus with cutting‐edge MnS2:CoS:Al2S3 thin film deposited through physical vapour deposition

Empowering energy‐water nexus with cutting‐edge MnS2:CoS:Al2S3 thin film deposited through physical vapour deposition

Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production

Preparation of nano‐AlN powder by sol–gel foaming and its sintering properties

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Product

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Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition

Empowering energy‐water nexus with cutting‐edge MnS₂:CoS:Al₂S₃ thin film deposited through physical vapour deposition