A review of the advances in catalyst modification using nonthermal plasma: Process, Mechanism and Applications

Ye, Zhiping; Zhao, Liang; Nikiforov, Anton; Giraudon, Jean‐Marc; Chen, Yue; Wang, Jiade; Tu, Xin

doi:10.1016/j.cis.2022.102755

Cited by 31 publications

(25 citation statements)

References 163 publications

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“…The oxidizing gas can induce a changed valence state of the metal and a different number of surface oxygen vacancies. 9 With the lowest excited state energy of only 220 kcol mol À1 , the generated oxygen radicals can break have strong oxidizing abilities. They have great application potential in organic decomposition, and impurity removal.…”

Section: Regulating Redox Properties By Non-thermal Plasmamentioning

confidence: 99%

“…Thus, the applications of plasma in material synthesis and modification have been reviewed by several researchers. 1,[6][7][8][9] Compared with the traditional methods for material synthesis, the plasma-involved processes can facilely active the surface reactivity of photocatalysts in a short reaction time without the addition of extra impurities. 10 In the past few years, the combination of plasma technology and photocatalysis has attracted much attention and great progresses have been made in this research field.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the applications of plasma in material synthesis and modification have been reviewed by several researchers. 1,6–9 Compared with the traditional methods for material synthesis, the plasma-involved processes can facilely active the surface reactivity of photocatalysts in a short reaction time without the addition of extra impurities. 10…”

Section: Introductionmentioning

confidence: 99%

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Combining non-thermal plasma technology with photocatalysis: a critical review

Zhou

Wei

2023

Phys. Chem. Chem. Phys.

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Section: Regulating Redox Properties By Non-thermal Plasmamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combining non-thermal plasma technology with photocatalysis: a critical review

Zhou

Wei

2023

Phys. Chem. Chem. Phys.

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“…High-temperature plasma achieves ultra-high outputs and temperatures up to 10 8 K, and, accordingly, any contact with a solid body leads to its destruction. The most widely used today in the synthesis of new materials and coatings is cold plasma at a maximum temperature of up to 10 2 K, which makes it possible to modify a surface, its porosity, chemistry, adsorption, and catalytic characteristics without significant thermal action [ 2 , 3 ]. An intermediate position is occupied by a low-temperature thermal quasi-equilibrium plasma at a temperature of up to 10 4 K. In this case, the plasma can be used as both a universal coolant and reagent at the same time.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness

2022

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Using the multifunctional material barium hexaferrite as an example, the prospects for treatment at a quasi-equilibrium low temperature in an open atmosphere to form superhydrophobic magnetic coatings with pronounced crystalline and magnetic anisotropy have been demonstrated for the first time. The relationship between plasma treatment conditions, structural-phase composition, morphology, and superhydrophobic properties of (0001) films of barium hexaferrite BaFe12O19 on C-sapphire is studied. X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), as well as magnetometry and moisture resistance analysis, were used as research methods. During plasma treatment with a mass-average temperature of 8–10 kK, intense evaporation and surface melting were observed, and texturing of the deposit along (0001) is found. When the treatment temperature was reduced to 4–5 kK, the evaporation of the material was minimized and magnetic and crystal anisotropy increased. However, the increase in the size of crystallites was accompanied by the transition of oxygen atoms from lattice nodes to interstitial positions. All samples exhibited low coercive fields below 500 Oe, associated with the frustration of the magnetic subsystem. Features of growth of materials with a wurtzite structure were used to form a superhydrophobic coating of barium hexaferrite. Plasma treatment regimes for obtaining self-cleaning coatings are proposed. The use of magnetically hard barium hexaferrite to radically change the properties of a coating is demonstrated herein as an example.

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“…Cold plasma with an elevated temperature is used to modify the surface of materials. It is used, for example, to activate the surface of catalysts, to control the topography and physical and chemical properties of the surface of materials [ 8 ]. Low-temperature plasma nitriding at a temperature of 450 °C is used to improve the hardness and wear resistance of steel [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Plasma Treatment Parameters on the Structural-Phase Composition, Hardness, Moisture-Resistance, and Raman-Enhancement Properties of Nitrogen-Containing Titanium Dioxide

2022

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The paper shows, for the first time, the prospects of treatment with a quasi-equilibrium low-temperature nitrogen plasma in an open atmosphere for the formation of super-hard, super-hydrophobic TiN/TiO2 composite coatings with pronounced Raman-enhancement properties. X-ray diffractometry (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and Raman spectroscopy, as well as the analysis of hardness and moisture-resistance properties, are used as analytical research methods. During plasma treatment of titanium films on sapphire with a mass average temperature of 4–6 kK, an X-ray amorphous hydrophilic titanium oxide film with a low nitrogen content is formed. The nitrogen content in titanium oxide films increases with increasing treatment temperature up to 6–7 kK. In this case, an X-ray amorphous hydrophobic film is formed. With a further increase in temperature to 7–10 kK, a TiN/TiO2 composite structure based on polycrystalline rutile is formed with increased hydrophobicity and pronounced Raman enhancement properties due to the effective excitation of surface plasmon polaritons. The presence of the crystalline phase increases the dephasing time, which determines the quality of the resonance and the achievable amplification of the electromagnetic field near the TiN inclusions. All treated films on sapphire have a super-hardness above 25 GPa (Vickers hardness test) due to high grain size, the presence of nitrogen-containing inclusions concentrated along grain boundaries, and compressive stresses.

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A review of the advances in catalyst modification using nonthermal plasma: Process, Mechanism and Applications

Cited by 31 publications

References 163 publications

Combining non-thermal plasma technology with photocatalysis: a critical review

Combining non-thermal plasma technology with photocatalysis: a critical review

Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness

Influence of Plasma Treatment Parameters on the Structural-Phase Composition, Hardness, Moisture-Resistance, and Raman-Enhancement Properties of Nitrogen-Containing Titanium Dioxide

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