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  • 标题:One-step synthesis of visible light CO 2 reduction photocatalyst from carbon nanotubes encapsulating iodine molecules
  • 本地全文:下载
  • 作者:Ayar Al-zubaidi ; Kenta Kobayashi ; Yosuke Ishii
  • 期刊名称:Scientific Reports
  • 电子版ISSN:2045-2322
  • 出版年度:2021
  • 卷号:11
  • DOI:10.1038/s41598-021-89706-2
  • 语种:English
  • 出版社:Springer Nature
  • 摘要:We describe the synthesis and visible-light CO 2 photoreduction catalytic properties of a three-component composite consisting of AgI, AgIO 3, and single-walled carbon nanotubes (SWCNTs). The catalyst is synthesized by immersing SWCNTs encapsulating iodine molecules in AgNO 3 aqueous solution, during which neutral iodine (I 2) molecules encapsulated in SWCNTs transform disproportionately to I 5+ (AgIO 3) and I − (AgI), as revealed from the characterization of the composite by Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. In addition, photoirradiation experiments using a solar-simulator (AM1.5G) showed that the obtained three-component composite works as a CO 2 photoreduction catalyst under visible light despite the wide band gap of AgIO 3, suggesting possible transfer of the visible light-excited electron from AgI via SWCNTs.
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