Li Zhuolin, Zhang Yangping, Zou Bin, Wu Zhengying, Gao Fei, Du Yukou
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, P. R. China.
Inorg Chem. 2022 Jun 27;61(25):9693-9701. doi: 10.1021/acs.inorgchem.2c01164. Epub 2022 Jun 14.
The development of efficient and stable Pd-based electrocatalysts is extremely important to facilitate the development of catalysts for polyol oxidation reactions. To synthesize Pd-based catalysts with excellent catalytic performance, a series of PdAg porous nanowires (PdAg PNWs) with different elemental ratios was constructed by facile synthesis using a seed-mediated method. The synthesized PdAg PNWs have a rough surface and a porous one-dimensional structure, which optimize the specific surface area and surface area of catalysts, thereby providing more active sites for catalysts. PdAg PNWs benefited from the geometric effect of porous nanowires and the synergy between Pd and Ag, showing excellent catalysis (8243.0 and 4137.0 mA mg) for the ethylene glycol oxidation reaction (EGOR) and glycerol oxidation reaction (GOR). Among them, the optimal PdAg PNWs show the highest catalytic activity (6.0 times and 3.9 times higher than Pd/C) and stability compared with PdAg PNWs, PdAg PNWs, and Pd/C for EGOR and GOR. At the same time, this porous one-dimensional structure also endows PdAg PNWs with faster electron transfer capabilities than Pd/C. This work will likely provide an effective strategy for constructing cost-effective catalysts.
开发高效稳定的钯基电催化剂对于推动多元醇氧化反应催化剂的发展极为重要。为了合成具有优异催化性能的钯基催化剂，采用种子介导法通过简便合成构建了一系列具有不同元素比例的钯银多孔纳米线（PdAg PNWs）。合成的PdAg PNWs具有粗糙的表面和多孔的一维结构，这优化了催化剂的比表面积和表面积，从而为催化剂提供了更多的活性位点。PdAg PNWs受益于多孔纳米线的几何效应以及钯和银之间的协同作用，对乙二醇氧化反应（EGOR）和甘油氧化反应（GOR）表现出优异的催化性能（8243.0和4137.0 mA mg）。其中，最佳的PdAg PNWs与PdAg PNWs、PdAg PNWs和Pd/C相比，对EGOR和GOR表现出最高的催化活性（分别比Pd/C高6.0倍和3.9倍）和稳定性。同时，这种多孔一维结构还赋予PdAg PNWs比Pd/C更快的电子转移能力。这项工作可能为构建具有成本效益的催化剂提供一种有效策略。
