Direct Synthesis of Graphdiyne Nanowalls on Arbitrary Substrates and Its Application for Photoelectrochemical Water Splitting Cell

Researchers developed a new route to synthesize structure-controlled GDY by employing a copper envelope catalysis strategy, which was a general and simple method for the fabrication of GDY nanowalls on arbitrary substrates. In this method, the target substrates were put into a copper foil envelope borrowed from the CVD growth of grapheme, which ensured that sufficient concentrations of catalyst could diffuse into the interface between the target substrate and solution to induce the in situ growth of GDY. The as-prepared copper envelope served as the catalyst reservoir, and was used as a container for arbitrary substrates, paving the way forward for the realization of GDY growth on target substrates with versatile chemical compositions and dimensions.