Catechol-functionalized microporous organic polymer as supported media for Pd nanoparticles and its high catalytic activity
作者：Huidong Qian, Qingyi He, Jifu Zheng, Shenghai Li*, Suobo Zhang*
關鍵字：microporous organic polymer
論文來源：期刊
具體來源：Polymer
發表時間：2014年
We report a new hydroxyl functionalized microporous organic polymer (MOPOH) based on the polymerization of catechol with terephthalaldehyde using phenolic resin-inspired chemistry. This catechol-decorated material, with surface area of 874 m2 g?1 and micro, mesopores, facilitates the immobilization and dispersion of Pd nanoparticles (NPs) on the polymer matrix. The surface area of the created composite (Pd@MOPOH) decreases to 419 m2 g?1 and the pore size distribution is narrowly distributed at 1.54 nm due to the filling of mesopores. The CO2 capture capacities for MOPOH and Pd@MOPOH at 273 K and 1 bar are 13.4 and 9.2 wt%, respectively. The resultant Pd NPs are crystalline and uniform with a mean diameter of 4.8 nm. The well-dispersed Pd@MOPOH exhibits excellent catalytic activity toward the model reduction of 4-nitrophenol into 4-aminophenol. Significantly, nearly no Pd leaching is detected during the catalytic cycles, showing active and durable nature of the heterogeneous nanocatalyst.