The production of solar fuels by solar energy conversion is considered to be one of major strategies for solving the global energy and environmental problems in the future. Photocatalytic H2 production by water splitting and photocatalytic hydrocarbon formation by CO2 reduction have become important and promising methods for clean, economical, and renewal production of solar fuels by using solar light. Usually, the photocatalytic H2-production performance on TiO2 is strongly dependent on the type and amount of co-catalyst because bare TiO2 has poor photocatalytic H2-Production activity. It is well-known that the loading of Pt as a co-catalyst on TiO2 significantly enhances H2-production activity for photocatalytic water splitting in the presence of sacrificial reagents. However, Pt is a rare and expensive noble metal. Therefore, alternative co-catalysts based on non-precious metals and earth-abundant materials have been intersively pursued in recent years. Graphene-based nanocpmposite photocatalysts have caused much interest as a viable alternate to increase photocatalytic H2-production and CO2-reduction performance in converting solar energy into chemical energy. The use of graphene as cocatalyst and support to enhance the H2-production and CO2-reduction activity of photocatalysts has been confirmed due to its unique two-dimensional conjugated structure and electronic properties. In this talk, I will present our recent work on the design and fabrication of graphene-based nanocomposite photocatalytic materials for H2 production and CO2 reduction. The rational designs for advanced photocatalytic materials using graphene-based materials are described. Our work also demonstrates graphene becoming a promising substitute for noble metals in photocatalytic H2 production and CO2 reduction