College of Chemistry and Materials Science, Jiangsu Key Laboratory of Bio-Functional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Nanjing Normal University, Nanjing, 210023, China.
Environ Sci Pollut Res Int. 2023 Sep;30(43):97936-97947. doi: 10.1007/s11356-023-29302-1. Epub 2023 Aug 21.
Three nitrophenols are among the 126 priority toxic pollutants identified by the US Environmental Protection Agency. Catalyzing hydrogenation is a simple way to convert these toxic nitrophenols into harmless aminophenols. Commercial PdC has excellent catalytic hydrogenation activity but has weaknesses such as high price and low reusability. Here, we fabricated a series of nano-Pd 2D Co-MOF heterostructures and filtered for optimal Co-MOF@Pd, which contain ultra-low Pd content (0.08 wt%) and recorded high catalytic efficiency for 4-nitrophenol among the reported non-single atom catalyst due to edge and size effects. The TOF value of Co-MOF@Pd is 9800 h, ∼206 times higher than that of PdC (Pd content, 10 wt%). Furthermore, Co-MOF@Pd has been widely applied to catalyze the reduction of various nitrophenol substrates with higher than 99% conversion efficiency and selectivity.
三种硝基酚类化合物是美国环境保护署确定的 126 种优先毒性污染物之一。催化氢化是将这些有毒的硝基酚类化合物转化为无害的氨基酚类化合物的一种简单方法。商业 PdC 具有优异的催化氢化活性，但存在价格高、可重复使用性低等缺点。在这里，我们制备了一系列纳米 Pd 二维 Co-MOF 异质结构，并对最佳的 Co-MOF@Pd 进行了筛选，由于边缘和尺寸效应，该 Co-MOF@Pd 中的 Pd 含量极低（0.08wt%），在已报道的非单原子催化剂中对 4-硝基酚的催化效率最高。Co-MOF@Pd 的 TOF 值为 9800 h，是 PdC（Pd 含量为 10wt%）的约 206 倍。此外，Co-MOF@Pd 已广泛应用于催化还原各种硝基酚类底物，转化率和选择性均高于 99%。
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