Tuning Effect of N<sub>2</sub>on Atmospheric-Pressure Cold Plasma CVD of TiO<sub>2</sub>Photocatalytic Films

Di, Lanbo; Li, Xiaosong; Zhao, Tianliang; Chang, Da-Lei; Liu, Qianqian; Zhu, Ai‐Min

doi:10.1088/1009-0630/15/1/11

Cited by 11 publications

(8 citation statements)

References 31 publications

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“…This may be due to the fast gas–liquid plasma preparation process (just 12 min), which is not beneficial to the formation of compact materials. This is consistent with previous work for plasma‐enhanced chemical vapor deposition of TiO 2 films …”

supporting

confidence: 93%

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Duan

Zhan

et al. 2016

Adv Materials Inter

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A facile, fast and environmentally friendly gas–liquid plasma method for synthesizing Cu2(OH)3NO3 nanosheets is reported for the first time. The preparation process just takes 12 min using Cu(NO3)2 aqueous solution without any other chemical agents. The Cu2(OH)3NO3 nanosheets exhibit much higher methyl orange (MO) adsorption capacity (428.8 mg MO g−1) than that prepared by the solvothermal method (212.8 mg MO g−1).

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supporting

confidence: 93%

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Duan

Zhan

et al. 2016

Adv Materials Inter

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“…Due to the relatively mild nature, PECVD has also been used to prepare films on heatsensitive substrates, and to improve film quality. Factors influencing PECVD consist of input power, reactor geometry, and size, negative bias, ion energy, substrate temperature, working pressure, working gas, etc [159].…”

Section: Cold Plasma Deposition Of Catalytic Materialsmentioning

confidence: 99%

Cold plasma treatment of catalytic materials: a review

Di¹,

Zhang²,

Zhang³

et al. 2021

J. Phys. D: Appl. Phys.

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Catalytic materials play important roles in chemical, energy, and environmental fields. The exhaustion of fossil fuels and the resulting deteriorative environment have become worldwide problems to be solved urgently. Therefore, treatment of catalytic materials by a green process is required for a sustainable future, and the atom efficiency of the catalytic materials should be improved at the same time. Cold plasma is rich in high-energy electrons and active species, and the gas temperature can be close to room temperature. It has been proved to be a fast, facile, and environmentally friendly novel method for treating catalytic materials, and has aroused increasing research interests. First, plasma treatment can achieve the reduction, deposition, combination, and decomposition of active components during the preparation of catalytic materials. The fast, low-temperature plasma process with a strong electric field in it leads to different types of nucleation and crystal growth compared to conventional thermal methods. Correspondingly, the synthesized catalytic materials generally possess smaller particle sizes and controlled structure depending on the plasma processing parameters and the materials to be treated, which can enhance their activity and stability. Second, plasma treatment can achieve the modification, doping, etching, and exfoliation of the catalytic materials, which can tune the surface properties and electronic structures of the catalytic materials to expose more active sites. Third, plasma treatment can regenerate deactivated catalytic materials by removing the carbon deposits or other poisons, and reconstruction of the destroyed structure. This work reviews the current status of research on cold plasma treatment of catalytic materials. The focus is on physical and chemical processes during plasma processing, the processing mechanism of the catalytic materials, as well as the future challenges in this filed.

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“…Each treatment just took 4 min. In our previous work [29] , it was found that the gas temperature estimated in Ar+N 2 was about the same as that in pure Ar gas. In this work, CuO could not be reduced when pure Ar was used as the working gas.…”

Section: Reduction Mechanismmentioning

confidence: 74%

Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism

Di¹,

Zhang²,

Xu³

2014

Plasma Sci. Technol.

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Dielectric barrier discharge (DBD) cold plasma at atmospheric pressure was used for preparation of copper nanoparticles by reduction of copper oxide (CuO). Power X-ray diffraction (XRD) was used to characterize the structure of the copper oxide samples treated by DBD plasma. Influences of H2 content and the treating time on the reduction of copper oxide by DBD plasma were investigated. The results show that the reduction ratio of copper oxide was increased initially and then decreased with increasing H2 content, and the highest reduction ratio was achieved at 20% H2 content. Moreover, the copper oxide samples were gradually reduced by DBD plasma into copper nanoparticles with the increase in treating time. However, the average reduction rate was decreased as a result of the diffusion of the active hydrogen species. Optical emission spectra (OES) were observed during the reduction of the copper oxide samples by DBD plasma, and the reduction mechanism was explored accordingly. Instead of high-energy electrons, atomic hydrogen (H) radicals, and the heating effect, excited-state hydrogen molecules are suspected to be one kind of important reducing agents. Atmospheric-pressure DBD cold plasma is proved to be an efficient method for preparing copper nanoparticles.

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Tuning Effect of N₂on Atmospheric-Pressure Cold Plasma CVD of TiO₂Photocatalytic Films

Cited by 11 publications

References 31 publications

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Cold plasma treatment of catalytic materials: a review

Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism

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Tuning Effect of N2on Atmospheric-Pressure Cold Plasma CVD of TiO2Photocatalytic Films

Cited by 11 publications

References 31 publications

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Gas–Liquid Cold Plasma for Synthesizing Copper Hydroxide Nitrate Nanosheets with High Adsorption Capacity

Cold plasma treatment of catalytic materials: a review

Preparation of Copper Nanoparticles Using Dielectric Barrier Discharge at Atmospheric Pressure and its Mechanism

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Product

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Tuning Effect of N₂on Atmospheric-Pressure Cold Plasma CVD of TiO₂Photocatalytic Films