Abstract

Pomelo peel was firstly used as the precursor with activating agent KHCO₃ to prepare few layered graphene nanosheets (GS) through gas stripping method. The precursor graphitized and transformed to few layered graphene nanosheets gradually because of the preset temperature program and KHCO₃. GS-4-1100, possessed the highest graphitization (I_D/I_G = 0.14, I_2D/I_G = 0.923) in 2~3 layers, at the edges. Taking advantages of the excellent electronic transmission performance and unique two-dimensional structure of both graphene and porous graphitic carbon nitride (g-C₃N₄), 2D/2D graphene/g-C₃N₄ nanosheet composite was fabricated for photocatalytic hydrogen evolution. The results showed that nano-copper (Cu NPs) performed the hydrogen evolution rate of 1.09 mmol g⁻¹ h⁻¹, while that of GS/CN-2 reached 2.91 mmol g⁻¹ h⁻¹ with in situ 5.49wt% Cu NPs. GS/CN-2/Cu turned out to be a stable and clean photocatalyst for hydrogen production.

Keywords: g-C₃N₄, photocatalyst H₂ production, pomelo peel graphene nanosheets

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Li, B.; Xu, Z.; Zeng, H. Beilstein Arch. 2020, 202019. doi:10.3762/bxiv.2020.19.v1

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