Microstructure of YBa2Cu3O
                                y
                             subjected to severe plastic deformation by high pressure torsion

Кузнецова, Е. И.; Degtyarev, M. V.; Zyuzeva, N. A.; Бобылев, И. Б.; Pilyugin, V. P.

doi:10.1134/s0031918x17080099

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The inducing ultra-SPD [ 51 ] together with fast dynamic diffusion [ 52 , 53 ] introduces the HPT method as a unique path to mechanically synthesize new materials even from immiscible systems [ 54 , 55 ]. Due to these unique features of HPT, the method was even used for the process and synthesis of hard and brittle ceramics, but the number of publications on ceramics is quite limited despite the high potential of these materials for various applications [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 ]. Published studies regarding ceramics processed or synthesized by HPT are presented in Table 1 , although there are other classic publications on HPT processing of ceramics mainly by physicists and geolog...…”

Section: Influence Of Hpt On Photocatalytic Co 2 C...mentioning

confidence: 99%

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

et al. 2023

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Excessive CO2 emission from fossil fuel usage has resulted in global warming and environmental crises. To solve this problem, the photocatalytic conversion of CO2 to CO or useful components is a new strategy that has received significant attention. The main challenge in this regard is exploring photocatalysts with high efficiency for CO2 photoreduction. Severe plastic deformation (SPD) through the high-pressure torsion (HPT) process has been effectively used in recent years to develop novel active catalysts for CO2 conversion. These active photocatalysts have been designed based on four main strategies: (i) oxygen vacancy and strain engineering, (ii) stabilization of high-pressure phases, (iii) synthesis of defective high-entropy oxides, and (iv) synthesis of low-bandgap high-entropy oxynitrides. These strategies can enhance the photocatalytic efficiency compared with conventional and benchmark photocatalysts by improving CO2 adsorption, increasing light absorbance, aligning the band structure, narrowing the bandgap, accelerating the charge carrier migration, suppressing the recombination rate of electrons and holes, and providing active sites for photocatalytic reactions. This article reviews recent progress in the application of SPD to develop functional ceramics for photocatalytic CO2 conversion.

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Section: Influence Of Hpt On Photocatalytic Co 2 C...mentioning

confidence: 99%

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

et al. 2023

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Effect of Plastic Deformation on the Formation of the YBa2Cu3O y Structure

Кузнецова

Криницина

Бобылев

et al. 2017

Phys. Metals Metallogr.

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High-Pressure Torsion for Highly-Strained and High-Entropy Photocatalysts

Akrami

Edalati

Fuji

et al. 2024

KONA

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Nowadays, the environmental crisis caused by using fossil fuels and CO 2 emissions has become a universal concern in people's life. Photocatalysis is a promising clean technology to produce hydrogen fuel, convert harmful components such as CO 2 , and degrade pollutants like dyes in water. There are various strategies to improve the efficiency of photocatalysis so that it can be used instead of conventional methods; however, the low efficiency of the process has remained a big drawback. In recent years, high-pressure torsion (HPT), as a severe plastic deformation (SPD) method, has shown extremely high potential as an effective strategy to improve the activity of conventional photocatalysts and synthesize new and highly efficient photocatalysts. This method can successfully improve the activity by increasing the light absorbance, narrowing the bandgap, aligning the band structure, decreasing the electron-hole recombination, and accelerating the electron-hole separation by introducing large lattice strain, oxygen vacancies, nitrogen vacancies, high-pressure phases, heterojunctions, and high-entropy ceramics. This study reviews the recent findings on the improvement of the efficiency of photocatalysts by HPT processing and discusses the parameters that lead to these improvements.

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Microstructure of YBa2Cu3O y subjected to severe plastic deformation by high pressure torsion

Cited by 3 publications

References 14 publications

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

Advanced Photocatalysts for CO2 Conversion by Severe Plastic Deformation (SPD)

Effect of Plastic Deformation on the Formation of the YBa2Cu3O y Structure

High-Pressure Torsion for Highly-Strained and High-Entropy Photocatalysts

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