Wu Yongmei, Wen Meicheng, Navlani-García Miriam, Kuwahara Yasutaka, Mori Kohsuke, Yamashita Hiromi
Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.
Department of Chemical and Environmental Engineering, Xingjiang Institute of Engineering, Urumqi, 83009, P.R. China.
Chem Asian J. 2017 Apr 18;12(8):860-867. doi: 10.1002/asia.201700041. Epub 2017 Mar 29.
Pd nanoparticles (NPs) supported on Ti-doped graphitic carbon nitride (g-C N ) were synthesized by a deposition-precipitation route and a subsequent reduction with NaBH . The features of the NPs were studied by XRD, TEM, FTIR, XPS, EXAFS and N -physisorption measurements. It was found that the NPs had an average size of 2.9 nm and presented a high dispersion on the surface of Ti-doped g-C N . Compared to Pd loaded on pristine g-C N , the Pd NPs supported on Ti-doped g-C N exhibited a high catalytic activity in formic acid dehydrogenation in water at room temperature. The enhanced activity could be attributed to the small Pd NPs size, as well as the strong interaction between Pd NPs and Ti-doped g-C N .
通过沉积沉淀法和随后用硼氢化钠还原，合成了负载在钛掺杂石墨相氮化碳（g-C₃N₄）上的钯纳米颗粒（NPs）。通过X射线衍射（XRD）、透射电子显微镜（TEM）、傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、扩展X射线吸收精细结构（EXAFS）和N₂物理吸附测量等手段对这些纳米颗粒的特性进行了研究。结果发现，这些纳米颗粒的平均尺寸为2.9 nm，并且在钛掺杂的g-C₃N₄表面呈现出高度分散的状态。与负载在原始g-C₃N₄上的钯相比，负载在钛掺杂g-C₃N₄上的钯纳米颗粒在室温下水中甲酸脱氢反应中表现出高催化活性。活性增强可归因于钯纳米颗粒尺寸小，以及钯纳米颗粒与钛掺杂g-C₃N₄之间的强相互作用。
