Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China.
Dalton Trans. 2018 Nov 21;47(43):15458-15464. doi: 10.1039/c8dt03327g. Epub 2018 Oct 18.
The fabrication of noble metal free catalysts with excellent performance and high stability by a simple, efficient, general and low-cost approach remains an urgent task for solving the problem of resource shortage. Herein, Cu-based metal organic frameworks (MOFs) immobilized on commercial filter papers were used as pyrolysis precursors to synthesize CuO@C at various calcination temperatures. Notably, the resultant CuO@C-400 exhibits an excellent catalytic performance toward the reaction of reducing 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). By virtue of the large specific surface area, well-developed porosity, good stability and high dispersity of CuO nanoparticles, the obtained CuO@C-400 could complete the reduction reaction within 11 min with a large apparent rate constant κ value (4.8 × 10 s). Our strategy therefore opens a new avenue for the preparation of low-cost and high-performance noble metal free catalysts.
通过简单、高效、通用且低成本的方法来制备具有优异性能和高稳定性的无贵金属催化剂，仍然是解决资源短缺问题的当务之急。在此，将负载在商用滤纸的铜基金属有机框架（MOFs）用作热解前体，在不同煅烧温度下合成 CuO@C。值得注意的是，所得的 CuO@C-400 在还原 4-硝基苯酚（4-NP）为 4-氨基酚（4-AP）的反应中表现出优异的催化性能。由于 CuO 纳米粒子具有较大的比表面积、发达的孔隙率、良好的稳定性和高分散性，所得到的 CuO@C-400 可以在 11 分钟内完成还原反应，具有较大的表观速率常数 κ 值（4.8×10 s）。因此，我们的策略为制备低成本、高性能的无贵金属催化剂开辟了新途径。
