Formation of Hierarchical In 2 S 3 –CdIn 2 S 4 Heterostructured Nanotubes for Efficient and Stable Visible Light CO 2 Reduction

We demonstrate rational design and fabrication of hierarchical In2S3-CdIn2S4 heterostructured nanotubes as efficient and stable photocatalysts for visible light CO2 reduction. The novel self-templated strategy, including sequential anion- and cation-exchange reactions, integrates two distinct sulfide semiconductors into hierarchical tubular hybrids with homogeneous interfacial contacts and ultrathin two-dimensional (2D) nanosheet subunits. Accordingly, the hierarchical heterostructured nanotubes facilitate separation and migration of photoinduced charge carriers, enhance the adsorption and concentration of CO2 molecules, and offer rich active sites for surface redox reactions. Benefiting from these structural…

• NR
  National Research Foundation

  Award: NRF-NRFI2016-04
• NR
  National Research Foundation Singapore

  Award: NRFI2016-04