Gas sensitive cerium oxide-tungsten oxide core-shell nanowires are synthesized and integrated directly into micromachined platforms via aerosol assisted chemical vapor deposition. Tests to various volatile organic compounds (acetone, ethanol, and toluene) involved in early disease diagnosis demonstrate enhanced sensitivity to acetone for the core-shell structures in contrast to the non-modified materials (i.e., only tungsten oxide or cerium oxide). This is attributed to the high density of oxygen vacancy defects at the shell, as well as the formation of heterojunctions at the core-shell interface, which provide the modified nanowires with 'extra' chemical and electronic sensitization as compared to the non-modified materials.

• Klíčová slova
• acetone, gas sensors, heterojunctions, metal oxides, volatile organic compounds (VOCs),
• MeSH
• aceton metabolismus   MeSH
• cer chemie   MeSH
• nanodráty chemie   MeSH
• oxidy chemie   MeSH
• těkavé organické sloučeniny metabolismus   MeSH
• wolfram chemie   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• aceton MeSH
• cer MeSH
• ceric oxide MeSH Prohlížeč
• oxidy MeSH
• těkavé organické sloučeniny MeSH
• tungsten oxide MeSH Prohlížeč
• wolfram MeSH