聚乙二醇对用于析氢反应的镍锰氧化物催化剂性能的影响

Zeng Jinfeng, Chen Lu, Li Linlin, Yang Wei, Zou Hanbo, Chen Shengzhou

School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China.

School of Biotechnology and Health Science, Wuyi University, Jiangmen, China.

Front Chem. 2020 Apr 23;8:281. doi: 10.3389/fchem.2020.00281. eCollection 2020.

Solvothermal method is a very common synthetic method in the preparation of catalysts for the hydrogen evolution reaction (HER) of HO decomposition. Since a certain surfactant can be added to the solvothermal solvent, the crystal particle growth process can be changed to obtain catalysts with different morphologies. We synthesized a series of nickel-manganese oxides (NiMnO) by adding different amounts of Polyethylene glycol (PEG) using the solvothermal method. Structure characterizations exhibit that NiMnO catalyst prepared with different PEG additions have different morphologies. The NiMnO catalyst prepared by adding 3 g of PEG possesses abundant petal-like scales, it brings a large specific surface area, high reaction efficiency, and has the best electrocatalytic activity in alkaline media.

溶剂热法是制备用于水分解析氢反应（HER）催化剂时非常常用的合成方法。由于可以在溶剂热溶剂中添加某种表面活性剂，因此可以改变晶体颗粒的生长过程，从而获得具有不同形态的催化剂。我们采用溶剂热法通过添加不同量的聚乙二醇（PEG）合成了一系列镍锰氧化物（NiMnO）。结构表征表明，添加不同PEG量制备的NiMnO催化剂具有不同的形态。添加3 g PEG制备的NiMnO催化剂具有丰富的花瓣状鳞片，带来了较大的比表面积、较高的反应效率，并且在碱性介质中具有最佳的电催化活性。