Abstract Here, we tune the surface area and the anchoring environment of graphitic carbon nitride (g-C3N4) by adjusting the mass of ammonium chloride to obtain different mesoporous g-C3N4 supports (m-CN-x). Then Pt nanoparticles (NPs) supported on different m-CN-x (Pt/m-CN-x) have been prepared by a facile and eco-friendly ultrasonic impregnation assisted ethylene glycol reduction method, and applied for selective hydrogenation of furfural (FAL) to furfuryl alcohol (FOL). The Pt/m-CN-2 catalyst shows the best catalytic performance with 99.3% selectivity to FOL and 98.5% conversion of FAL, moreover can be recycled for five times without significant deactivation. The enhanced catalytic activity can be attributed to the fact that the m-CN-2 support has more suitable distribution of surface nitrogen species and anchoring environment for the nucleation and dispersion of Pt NPs, leading to the formation of small Pt NPs size (2.1 nm) and high content of electron-rich active Pt0 species (92.6%) on the surface of the Pt/m-CN-2 catalyst. Furthermore, the effects of different N species of m-CN-x on the anchoring of Pt NPs and formation of the Pt0 species were also investigated in detail. Our work provides a new idea for the regulation of graphitic phase carbon nitride supported Pt NPs catalysts.

中文翻译：

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氯化铵修饰介孔g-C3N4负载Pt的合成及其糠醛高效选择性加氢制糠醇

摘要 在这里，我们通过调节氯化铵的质量来调整石墨氮化碳 (g-C3N4) 的表面积和锚定环境，以获得不同的介孔 g-C3N4 载体 (m-CN-x)。然后通过简便环保的超声波浸渍辅助乙二醇还原法制备了负载在不同 m-CN-x (Pt/m-CN-x) 上的 Pt 纳米粒子 (NPs)，并应用于糠醛 (FAL) 的选择性加氢) 到糠醇 (FOL)。Pt/m-CN-2催化剂表现出最好的催化性能，对FOL的选择性为99.3%，对FAL的转化率为98.5%，而且可以循环使用5次而不会显着失活。催化活性增强可归因于 m-CN-2 载体具有更适合 Pt NPs 成核和分散的表面氮物种分布和锚定环境，导致形成小 Pt NPs 尺寸（2.1 nm ) 和 Pt/m-CN-2 催化剂表面高含量的富电子活性 Pt0 物种 (92.6%)。此外，还详细研究了 m-CN-x 的不同 N 物种对 Pt NPs 的锚定和 Pt0 物种形成的影响。我们的工作为调控石墨相氮化碳负载的 Pt NPs 催化剂提供了新思路。还详细研究了 m-CN-x 的不同 N 物种对 Pt NPs 锚定和 Pt0 物种形成的影响。我们的工作为调控石墨相氮化碳负载的 Pt NPs 催化剂提供了新思路。还详细研究了 m-CN-x 的不同 N 物种对 Pt NPs 锚定和 Pt0 物种形成的影响。我们的工作为调控石墨相氮化碳负载的 Pt NPs 催化剂提供了新思路。