采用化学还原法制备了载钯石墨相氮化碳催化剂（Pd/g-C₃N₄），利用XRD、TEM、XPS及PL等对催化剂进行表征，并以苯乙烯加氢为探针反应考察了其性能。结果表明，载体g-C₃N₄呈二维堆叠层状结构，活性组分Pd在g-C₃N₄表面分散均匀，且主要以零价形式存在。PL光谱分析表明，Pd的负载可以促进g-C₃N₄的光生电子空穴分离，有利于丰富Pd NPs表面的电子云密度。当Pd负载质量分数为0.5%时催化活性最佳，30℃下2 h转化率为80.2%，加入光照后转化率可达99.6%。

Pd/g-C₃N₄ catalysts are prepared through chemical reduction method, and their structure and morphology are characterized by X-ray diffraction (XRD) transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscop (PL).The hydrogenation of styrene is used as probe reaction to investigate the performance of the catalysts.Results show that g-C₃N₄ carrier exhibits two-dimensional stacked layer structure, the active component Pd is uniformly dispersed on the surface of g-C₃N₄, and it mainly exists in the form of zero valence.PL spectrum analysis shows that Pd loading can promote the separation of photogenerated electron holes of g-C₃N₄, which is beneficial to enrich the electron cloud density on the surface of Pd NPs.When Pd loading amount is 0.5 wt%, the catalyst exhibits the best activity, over which the conversion of styrene reaches 80.2% at 30℃ in 2 h, and will reach 99.6% after illumination.

肖佩荣(1995-),女,硕士研究生,研究方向为工业催化,1748756908@qq.com