Chen Xiufang, Zhang Ligang, Zhang Bo, Guo Xingcui, Mu Xindong
Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
Sci Rep. 2016 Jun 22;6:28558. doi: 10.1038/srep28558.
Graphitic carbon nitride nanosheets were investigated for developing effective Pt catalyst supports for selective hydrogenation of furfural to furfuryl alcohol in water. The nanosheets with an average thickness of about 3 nm were synthesized by a simple and green method through thermal oxidation etching of bulk g-C3N4 in air. Combined with the unique feature of nitrogen richness and locally conjugated structure, the g-C3N4 nanosheets with a high surface area of 142 m(2) g(-1) were demonstrated to be an excellent supports for loading small-size Pt nanoparticles. Superior furfural hydrogenation activity in water with complete conversion of furfural and high selectivity of furfuryl alcohol (>99%) was observed for g-C3N4 nanosheets supported Pt catalysts. The large specific surface area, uniform dispersion of Pt nanoparticles and the stronger furfural adsorption ability of nanosheets contributed to the considerable catalytic performance. The reusability tests showed that the novel Pt catalyst could maintain high activity and stability in the furfural hydrogenation reaction.
研究了石墨相氮化碳纳米片用于开发有效的铂催化剂载体，以实现水中糠醛选择性加氢制糠醇。通过在空气中对块状g-C3N4进行热氧化蚀刻，采用简单绿色的方法合成了平均厚度约为3nm的纳米片。结合富氮和局部共轭结构的独特特性，具有142 m² g⁻¹高比表面积的g-C3N4纳米片被证明是负载小尺寸铂纳米颗粒的优异载体。对于g-C3N4纳米片负载的铂催化剂，在水中观察到了优异的糠醛加氢活性，糠醛完全转化，糠醇选择性高（>99%）。大的比表面积、铂纳米颗粒的均匀分散以及纳米片对糠醛更强的吸附能力促成了可观的催化性能。可重复使用性测试表明，这种新型铂催化剂在糠醛加氢反应中能够保持高活性和稳定性。
