H₂ could be the most promising, sustainable, and alternative energy source in the foreseeable future. In this study, a gel-like Ag-containing dicyandiamide metal–organic supramolecular network (MOSN) has been prepared as a precursor to synthesize g-C₃N₄ for photocatalytic H₂ evolution under light irradiation. Ag can be well incorporated into the g-C₃N₄ structure by using Ag-containing dicyandiamide MOSN as a precursor to produce a metal–semiconductor interface, thereby promoting the charge separation (evidenced by electrochemical impedance spectroscopy and photocurrent density measurement) and ultraviolet–visible light absorption (UV–vis absorption spectroscopy) and photocatalytic activity for H₂ evolution. g-C₃N₄ derived from the Ag-containing dicyandiamide MOSN exhibits high H₂ evolution after Pt loadings under light irradiation (λ > 400, 450, and 550 nm) in the presence of triethanolamine. In summary, g-C₃N₄ synthesized from Ag-containing dicyandiamide supramolecules can be used as an effective photocatalyst for H₂ production.

中文翻译：

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凝胶状Ag-双氰胺金属-有机超分子网络衍生g-C3N4用于光催化制氢

在可预见的未来， H ₂可能是最有前途、最可持续的替代能源。在这项研究中，制备了一种凝胶状的含银双氰胺金属-有机超分子网络（MOSN）作为前驱体，用于合成 gC ₃ N ₄用于在光照射下光催化析_氢。Ag 可以很好地结合到 gC ₃ N _4中以含银双氰胺 MOSN 为前驱体，形成金属-半导体界面，从而促进电荷分离（通过电化学阻抗谱和光电流密度测量证明）和紫外-可见光吸收（​​UV-vis 吸收光谱）和光催化H ₂演化的活性。由含银双氰胺 MOSN 衍生的gC ₃ N ₄在光照射（λ > 400、450 和 550 nm）和三乙醇胺存在下，在 Pt 负载后表现出高 H _2释放。综上所述，由含Ag双氰胺超分子合成的gC ₃ N ₄可作为H的有效光催化剂。₂生产。