硫掺杂管状多孔g-C_(3)N_(4)光催化剂的制备及其催化性能

Preparation and Catalytic Performance of S-Doped Tubular Porous g-C_(3)N_(4) Photocatalysts

以体相石墨相氮化碳(g-C_(3)N_(4))为原料,硫代乙酰胺(TAA)为硫源,通过一步水热法得到管状多孔S掺杂g-C_(3)N_(4)光催化剂(SCNB-18)。S的引入扩大了g-C_(3)N_(4)的可见光吸收范围,且管状多孔的形貌特征提高了光催化剂的比表面积,与体相g-C_(3)N_(4)相比,所合成SCNB-18的比表面积高达170.6 m^(2)/g。另外,对样品的微观形貌结构以及光电性能进行表征,并通过光催化分解水制氢以及降解水中污染物来评估样品的催化性能。研究结果表明,SCNB-18光催化剂具有优异的光催化活性和良好的循环稳定性。

With bulk g-C_(3)N_(4) as a raw material,S-doped g-C_(3)N_(4) photocatalyst(SCNB-18)with tubular multi-pore channels were obtained by one-step hydrothermal method using thioacetamide(TAA)as a sulfur source.The introduction of S expanded the visible light absorption range of g-C_(3)N_(4),and the tubular porous morphology increased the specific surface area of nanocatalyst.Compared with bulk g-C_(3)N_(4),SCNB-18 possessed a larger surface area of about 170.6 m^(2)/g.Moreover,the microstructure and photoelectric properties for the samples were characterized.The catalytic performance of SCNB-18 was evaluated by photocatalytic hydrogen production and degradation of pollutants.The results showed that SCNB-18 nanocatalyst exhibited an excellent photocatalytic performance and cyclic stability.