Scholarlink

<p>A combined surface treatment approach of anodization and deoxidation was employed to fabricate nanoporous structures on the surfaces of tungsten (W) and oxides-dispersion-strengthened tungsten (ODS-W). Systematic investigations into the microstructures, chemical compositions, specific surface areas, and electrocatalytic activities of W and ODS-W before and after surface treatment were conducted using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) and electrochemical tests. The results demonstrated that the introduction of nanoporous structures significantly enhanced the surface activity and electrocatalytic activity of W and ODS-W. A schematic model of the nanoporous structure formation mechanism on the surfaces of W and ODS-W was proposed, discussing the interplay between metal oxidation, oxide dissolution, and chemical dissolution during the anodization process.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Surface microstructure and activity of nanoporous W-based materials via anodization and deoxidization

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月3日

查看全文
  • Yuanyuan Chen,
  • Zhang Liu,
  • Ke Liu,
  • Yuan Huang,
  • Zumin Wang

摘要

A combined surface treatment approach of anodization and deoxidation was employed to fabricate nanoporous structures on the surfaces of tungsten (W) and oxides-dispersion-strengthened tungsten (ODS-W). Systematic investigations into the microstructures, chemical compositions, specific surface areas, and electrocatalytic activities of W and ODS-W before and after surface treatment were conducted using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) and electrochemical tests. The results demonstrated that the introduction of nanoporous structures significantly enhanced the surface activity and electrocatalytic activity of W and ODS-W. A schematic model of the nanoporous structure formation mechanism on the surfaces of W and ODS-W was proposed, discussing the interplay between metal oxidation, oxide dissolution, and chemical dissolution during the anodization process.