Agricultural Waste Derived Silicon Carbide Composite Nanopowders as Efficient Coelectrocatalysts for Water Splitting
Научная публикация
Журнал |
Journal of Cleaner Production
ISSN: 0959-6526
|
Вых. Данные |
Год: 2024,
Том: 442,
Номер статьи
: 140890,
Страниц
: 13
DOI:
10.1016/j.jclepro.2024.140890
|
Ключевые слова |
Agricultural wastes; Silicon carbide; Nanopowders; Plasma synthesis; Oxidative carbonization; Electrocatalysis |
Авторы |
Nikitin Dmitriy S.
1,2
,
Shanenkov Ivan I.
1,2
,
Yeletsky Petr M.
3
,
Nassyrbayev Artur
2
,
Tabakaev Roman B.
1,2
,
Shanenkova Yuliya L.
2
,
Ryskulov Dastan N.
2
,
Tsimmerman Alexander I.
1,2
,
Sivkov Aleksandr A.
4,2
|
Организации |
1 |
Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 6 Volodarskogo St., Tyumen, 625003, Russian Federation
|
2 |
School of Energy and Power Engineering, Tomsk Polytechnic University, 30 Lenin Av., Tomsk, 634050, Russian Federation
|
3 |
Federal Research Center Boreskov Institute of Catalysis SB RAS, 5 Lavrentieva Av., Novosibirsk, 630090, Russian Federation
|
4 |
College of Communication Engineering, Jilin University, 2699 Qianjin st., Changchun, 130023, PR China
|
|
Информация о финансировании (1)
1
|
Министерство науки и высшего образования Российской Федерации
|
FEWZ-2024-0013
|
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.