Visible and near-infrared (NIR) light-induced water splitting has received considerable attention in terms of solar energy conversion and hydrogen energy storage. Single-walled carbon nanotubes (SWCNTs) are potentially strong optical absorbers with tunable absorption wavelengths between 500 and 1350 nm depending on their chiral indices (n,m). However, their application for solar energy conversion is difficult because of the large binding energy (> 100 meV) of excitons. In order to make SWCNTs act as a H₂-evolving photocatalyst, we have developed coaxial p-n heterojunction systems consisting of a SWCNT and fullerodendrons, such as SWCNT/fullerodendron, SWCNT/fullerodendron/SiO₂, SWCNT/fullerodendron/Pt(II), SWCNT/fullerodendron/TiO_x. This paper describes fabrication of several SWCNT photocatalysts and their photocatalytic activity for H₂ evolution from water by the use of a three-component system and an interconnecting system including Z-scheme (Figure 1).