Hybrid CuO-TiO(2-x)N(x) hollow nanocubes for photocatalytic conversion of CO2 into methane under solar irradiation.

Methane-producing hollow nanocubes: Hybrid CuO-TiO(2-x)N(x) hollow nanocubes have been synthesized by first depositing TiO(2) onto Cu(3)N nanocube templates, then heating in air to oxidize the Cu(3)N to CuO while concomitantly incorporating nitrogen into the TiO(2). The nanostructured CuO-TiO(2-x)N(x) material photocatalytically converts CO(2) into methane under solar irradiation.