聚乙烯吡咯烷酮对纳米多孔铜的细化以及 Cu2O 纳米线和纳米多孔铜光催化剂对甲基橙的光降解作用

IF 0.7 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science Pub Date : 2024-03-23 DOI:10.5755/j02.ms.35363

Zhuxu Xu, Yun LI, Fengxiang Qin, Z. Dan

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引用次数: 0

摘要

研究了在 Ti40.6Zr9.4Cu40.6Ni6.3Sn3.1 非晶带的脱合金过程中通过在高频溶液中加入聚乙烯吡咯烷酮（PVP）对纳米多孔铜（NP Cu）的细化，以及将 NP Cu 浸入脱水乙醇中得到的 Cu2O 纳米线的表面覆盖对甲基橙（MO）污染物光降解的影响。随着脱合金溶液中 PVP 浓度的增加，NP Cu 的孔隙和韧带尺寸显著减小，同时表面扩散率和位错缺陷密度急剧下降。随着 PVP 试剂的增加，Cu2O 纳米线的表面覆盖率越来越高。Cu2O 纳米线@纳米多孔铜（Cu2O@NP Cu）催化剂在纳米尺度的 Cu2O 纳米线和铜韧带之间存在大量异质结，因此在阳光下对 MO 的降解具有优异的光催化活性。

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Refinement of Nanoporous Cu by Polyvinylpyrrolidone and Photodegradation of Methyl Orange by Cu2O Nanowires and Nanoporous Cu Photocatalysts

Refinement of nanoporous Cu (NP Cu) by the addition of Polyvinylpyrrolidone (PVP) in HF solution during dealloying of Ti40.6Zr9.4Cu40.6Ni6.3Sn3.1 amorphous ribbons and effect of the surface coverage of Cu2O nanowires obtained by immersing NP Cu in dehydrated ethanol on the photodegradation of methyl orange (MO) pollutants were investigated. The sizes of pores and ligaments of NP Cu decrease significantly with the increase of PVP concentration in the dealloying solutions, accompanied by a drastic decrease in the surface diffusivity and the dislocation defect densities. The surface coverage of Cu2O nanowires becomes higher with an increase of the PVP reagents. The Cu2O nanowires@nanoporous Cu (Cu2O@NP Cu) catalysts show excellent photocatalytic activity towards the degradation of MO under the sunlight due to the existence of large amounts of heterojunctions between Cu2O nanowires and Cu ligaments in nanoscale.

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来源期刊

Materials Science 工程技术-材料科学：综合

CiteScore

1.60

自引率

44.40%

发文量

审稿时长

4-8 weeks

期刊介绍： Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.