Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature

Guo, Yang; Jian, Xian; Zhang, Li; Mu, Chunlai; Xie, Jianliang; Mahmood, Nasir; Dou, Shi Xue; Che, Renchao; Deng, Longjiang

doi:10.1016/j.cej.2019.123371

Cited by 186 publications

(58 citation statements)

References 51 publications

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“…As for FGN-6, the diffraction peaks displayed at 30.1°, 35.6°, 57.3°, and 62.9°could be assigned to (220), (311), (422), and (440) planes of the cubic spinel crystal of Fe 3 O 4 (JPCDS No. 19-0629)[27,43]. After raising the annealing temperature and acid leaching, FGN-7 shows only two peaks at around 41.1°and 43.2°, corresponding to the (002) and (111) reflections of Fe 3 N (JPCDS No.…”

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confidence: 99%

Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Jiang

Liang

et al. 2020

Nanotechnology Reviews

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Although Fe–N/C catalysts have received increasing attention in recent years for oxygen reduction reaction (ORR), it is still challenging to precisely control the active sites during the preparation. Herein, we report FexN@RGO catalysts with the size of 2–6 nm derived from the pyrolysis of graphene oxide and 1,1′-diacetylferrocene as C and Fe precursors under the NH3/Ar atmosphere as N source. The 1,1′-diacetylferrocene transforms to Fe3O4 at 600°C and transforms to Fe3N and Fe2N at 700°C and 800°C, respectively. The as-prepared FexN@RGO catalysts exhibited superior electrocatalytic activities in acidic and alkaline media compared with the commercial 10% Pt/C, in terms of electrochemical surface area, onset potential, half-wave potential, number of electrons transferred, kinetic current density, and exchange current density. In addition, the stability of FGN-8 also outperformed commercial 10% Pt/C after 10000 cycles, which demonstrates the as-prepared FexN@RGO as durable and active ORR catalysts in acidic media.

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confidence: 99%

Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Jiang

Liang

et al. 2020

Nanotechnology Reviews

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“…As indicated in the curve, as light change in mass occurs below 370 8C, followedb yarapid mass loss from 370 8C to 580 8C, which might be related to the removal of carbon from the composite in air. [39][40][41][42] Therefore, the weight percentage of Si in Si/C-300 is 15 %, which ultimately leads to al ow capacityf or Si/C.…”

Section: Resultsmentioning

confidence: 99%

Simplified Synthesis of Biomass‐Derived Si/C Composites as Stable Anode Materials for Lithium‐Ion Batteries

Majeed

Saleem

Wang

et al. 2020

Chemistry A European J

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Synthesis of silicon/carbon (Si/C) composites from biomass resources could enable the effective utilization of agricultural products in the battery industry with economical as well as environmental benefits. Herein, a simplified process was developed to synthesize Si/C from biomass, by using a low‐cost agricultural byproduct “rice husk (RH)” as a model. This process includes the calcination of RH for SiO2/C and the reduction of SiO2/C by Al in molten salts at a moderate temperature. This process does not need the removal of carbon before thermal reduction of SiO2, which is thought to be necessary to avoid the formation of SiC at elevated temperatures. Thus, carbon derived from biomass can be directly used for Si/C composites for anode materials. The resultant Si/C shows a high reversible capacity of 1309 mAh g−1 and long cycle life (300 cycles). This research advocates a new and simplified strategy for the synthesis of RH‐based biomass‐derived Si/C, which is beneficial for low‐cost, environmentally friendly, and green energy storage applications.

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“…As this is an oscillating field, molecules become extremely agitated, producing the dissipation the energy of the radiation and the increase of the inner temperature of the object subjected to microwaves. Many susceptor materials have been developed to efficiently convert microwaves into heat, and different composites with improved features, such as resistance to oxidation, has been produced [ 19 , 20 ]. As a result, the interaction of microwaves with matter produces a temperature gradient profile that is inverted compared to conventional heating [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Microwave-Assisted Synthesis of Silica Materials

Greñu

Reyes²,

Costero

et al. 2020

Nanomaterials

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Microwaves are a source of energy of great interest for chemical synthesis. Among nanomaterials, few are as versatile as silica—it forms mesoporous materials and nanoparticles, it can be incorporated as shells or loaded in composites, it can also be functionalized. Despite the relevant properties of silica, and the advantages of the use of microwave as energy source, its use in silica-based materials is not frequent. We report herein a compilation of the research results published in the last 10 years of microwave assisted synthesis of silica based materials. This review includes examples of mesoporous materials for waste removal, catalysis, drug release, and gas adsorption applications, together with examples based in the optimization of the synthesis conditions. In the case of non-porous materials, examples of analytical applications, coating of metallic nanoparticles, and SiOx-C materials have been collected.

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Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature

Cited by 186 publications

References 51 publications

Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Simplified Synthesis of Biomass‐Derived Si/C Composites as Stable Anode Materials for Lithium‐Ion Batteries

Recent Progress of Microwave-Assisted Synthesis of Silica Materials

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Plasma-induced FeSiAl@Al2O3@SiO2 core–shell structure for exceptional microwave absorption and anti-oxidation at high temperature

Cited by 186 publications

References 51 publications

Superior Fe x N electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Superior Fe x N electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Simplified Synthesis of Biomass‐Derived Si/C Composites as Stable Anode Materials for Lithium‐Ion Batteries

Recent Progress of Microwave-Assisted Synthesis of Silica Materials

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Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media

Superior Fe_xN electrocatalyst derived from 1,1′-diacetylferrocene for oxygen reduction reaction in alkaline and acidic media