A composite photocatalyst composed of carbonaceous material and g-C₃N₄ is fabricated by a simple thermal treatment of melamine (hydrothermally treated melamine) with cellulose acetate. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and elemental analysis data reveal the formation of carbonaceous material in the composites. The photocatalytic activity was evaluated by the H₂ liberation rate from water splitting under visible-light irradiation. The optimized composite, which is prepared from the precursor of hydrothermally treated melamine with cellulose acetate, shows 35 times higher photocatalytic activity than bulk g-C₃N₄ (melamine as the precursor) and a quantum efficiency of 1.05% (0.01 g of catalyst) under irradiation at 420 nm. The enhancement of the photocatalytic activity is ascribed to the unique electronic properties of the carbonaceous material, the enlarged specific surface area and the improved light absorption.

由碳质材料和gC ₃ N ₄组成的复合光催化剂是通过用醋酸纤维素对三聚氰胺（水热处理的三聚氰胺）进行简单的热处理而制得的。X射线衍射（XRD），傅立叶变换红外（FTIR）光谱和元素分析数据揭示了复合材料中碳质材料的形成。通过在可见光照射下水分解产生的H ₂释放速率评价光催化活性。由水热处理三聚氰胺的前体与醋酸纤维素制成的优化复合材料，其光催化活性比块状gC ₃ N ₄高35倍（三聚氰胺作为前体）和在420nm照射下的量子效率为1.05％（催化剂0.01g）。光催化活性的提高归因于碳质材料的独特电子性能，扩大的比表面积和改善的光吸收。