Agricultural waste derived silicon carbide composite nanopowders as efficient coelectrocatalysts for water splitting; Journal of Cleaner Production; Vol. 442
| Parent link: | Journal of Cleaner Production.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 442.— 2024.— Article number 140890, 13 p. |
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| Institution som forfatter: | |
| Andre forfattere: | , , , , , , , , |
| Summary: | Various silicon carbide nanostructures are attracting close attention due to their excellent performance and great potential, including utilization in a variety of catalytic applications. Approaches, utilizing different industrial wastes as a starting material for the synthesis of SiC nanoparticles, are especially distinguished due to their environmental friendliness. This paper demonstrates a new two-stage technique of the preparation of dispersed SiC/C nanocomposite. A highly mineralized carbonaceous residue obtained by thermal processing of agricultural waste was used as a precursor for the synthesis in a pulsed arc discharge plasma. Rice husks, oat husks and oat straw were chosen as agricultural wastes with a high content of silicon in the mineral component. Carbonaceous residues (biochars) were obtained from the selected wastes by oxidative carbonization in a reactor with a fluidized bed of a deep oxidation catalyst at 460 ◦C. High-energy (up to 20 kJ) treatment of the obtained biochars in a pulsed (up to 1 ms) arc discharge plasma jet resulted in synthesizing a nanodispersed material (particle size <50 nm) containing hexagonal silicon carbide α-SiC. The principal possibility of using the synthesized SiC-based composite as a catalyst and cocatalyst of platinum in the hydrogen evolution reaction (HER) of water splitting is shown. The most impressive results (η10 = 18–28 mV, η100 = 84–98 mV, b = 32–64 mV) comparable with standard commercial Pt/C samples were obtained by modifying the synthesized SiC-based composite with 5 % platinum. Thus, the developed approach allows us to convert the agricultural waste into useful high-tech products in the form of an electrocatalytically active material. Текстовый файл |
| Sprog: | engelsk |
| Udgivet: |
2024
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| Fag: | |
| Online adgang: | https://doi.org/10.1016/j.jclepro.2024.140890 |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=672637 |
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| 200 | 1 | |a Agricultural waste derived silicon carbide composite nanopowders as efficient coelectrocatalysts for water splitting |f D. S. Nikitin, I. I. Shanenkov, P. M. Yeletskyc [et al.] |d Композитные нанопорошки карбида кремния из сельскохозяйственных отходов как эффективные коэлектрокатализаторы для расщепления воды |z rus | |
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| 320 | |a References: p. 11-13 (76 tit.) | ||
| 330 | |a Various silicon carbide nanostructures are attracting close attention due to their excellent performance and great potential, including utilization in a variety of catalytic applications. Approaches, utilizing different industrial wastes as a starting material for the synthesis of SiC nanoparticles, are especially distinguished due to their environmental friendliness. This paper demonstrates a new two-stage technique of the preparation of dispersed SiC/C nanocomposite. A highly mineralized carbonaceous residue obtained by thermal processing of agricultural waste was used as a precursor for the synthesis in a pulsed arc discharge plasma. Rice husks, oat husks and oat straw were chosen as agricultural wastes with a high content of silicon in the mineral component. Carbonaceous residues (biochars) were obtained from the selected wastes by oxidative carbonization in a reactor with a fluidized bed of a deep oxidation catalyst at 460 ◦C. High-energy (up to 20 kJ) treatment of the obtained biochars in a pulsed (up to 1 ms) arc discharge plasma jet resulted in synthesizing a nanodispersed material (particle size <50 nm) containing hexagonal silicon carbide α-SiC. The principal possibility of using the synthesized SiC-based composite as a catalyst and cocatalyst of platinum in the hydrogen evolution reaction (HER) of water splitting is shown. The most impressive results (η10 = 18–28 mV, η100 = 84–98 mV, b = 32–64 mV) comparable with standard commercial Pt/C samples were obtained by modifying the synthesized SiC-based composite with 5 % platinum. Thus, the developed approach allows us to convert the agricultural waste into useful high-tech products in the form of an electrocatalytically active material. | ||
| 336 | |a Текстовый файл | ||
| 461 | 1 | |c Amsterdam |n Elsevier Science Publishing Company Inc. |t Journal of Cleaner Production | |
| 463 | 1 | |d 2024 |t Vol. 442 |v Article number 140890, 13 p. | |
| 610 | 1 | |a agricultural wastes | |
| 610 | 1 | |a silicon carbide | |
| 610 | 1 | |a nanopowders | |
| 610 | 1 | |a plasma synthesis | |
| 610 | 1 | |a oxidative carbonization | |
| 610 | 1 | |a electrocatalysis | |
| 610 | 1 | |a труды учёных ТПУ | |
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| 701 | 1 | |a Nikitin |b D. S. |c specialist in the field of electric power engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Technical Sciences |f 1991- |g Dmitry Sergeevich |9 18802 | |
| 701 | 1 | |a Shanenkov |b I. I. |c specialist in the field of electric power engineering |c Associate Professor of the Department of Tomsk Polytechnic University, Candidate of Sciences |f 1990- |g Ivan Igorevich |9 16728 | |
| 701 | 1 | |a Eletsky |b P. M. |g Petr Mikhaylovich | |
| 701 | 1 | |a Nassyrbayev (Nasyrbaev) |b A. |c Specialist in the field of electric power engineering |c Research Engineer of Tomsk Polytechnic University |f 1998- |g Artur |9 22370 | |
| 701 | 1 | |a Tabakaev |b R. B. |c specialist in the field of heat and power engineering |c researcher of Tomsk Polytechnic University, Candidate of Sciences |f 1986- |g Roman Borisovich |9 16833 | |
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| 701 | 1 | |a Ryskulov Dastan Nurbekovich |b D. N. |g Dastan Nurbekovich | |
| 701 | 1 | |a Tsimmerman (Cimmerman) |b A. I. |c electric power specialist |c engineer of Tomsk Polytechnic University |f 1996- |g Aleksandr Igorevich |9 22362 | |
| 701 | 1 | |a Sivkov |b A. A. |c Specialist in the field of electric power engineering |c Professor of Tomsk Polytechnic University, Doctor of technical sciences |f 1951- |g Aleksandr Anatolyevich |9 16262 | |
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