Nanotechnology

Heterojunction

Chemistry

Materials science

Optoelectronics

Photochemistry

Joule

A heterojunction material involving highly crystalline carbon nitride nanorods with ordered alignment on graphene is successfully synthesized, and it shows a comparably high selectivity of CO2/N2 up to 44, with an isosteric heat of adsorption of 55.2 kJ/mol for CO2. This material also shows remarkable improvements of light absorption, exciton splitting, and charge transport, which enables the efficient photochemical reduction of wet CO2 in the gas phase and without any sacrificial agent.

Highly Selective CO2 Capture and Its Direct Photochemical Conversion on Ordered 2D/1D Heterojunctions