kmno meaning in Chinese

电极或石墨电极作指示电极

Through the comparison between freeze - drying and heat - drying , the agglomeration and the desorption of the precursor on carbon support can be alleviated with freeze - drying method . the effects on the electrocatalysts by pretreatments of carbon support , dispersant and precursor are studied . the result shows that pretreatment of the carbon support by kmno _ 4 can add oxygen - containing functional groups on the surface of carbon , which can reduce the hydrophobicity of the carbon support , and then make it much easier for carbon to dissolve in water to form suspension ; isopropyl alcohol can make the carbon support in high dispersion in the precursor solution , which can make the precursor absorbed on the surface of the carbon
采用高锰酸钾氧化预处理的碳载体比表面积较大,表面含氧官能团数量较多,亲水性较好,有利于前躯体在碳载体表面的吸附;选取异丙醇作为预冻液中的分散剂,有利于碳载体在前躯体溶液中的分散,容易实现前躯体离子在碳载体表面的稳定吸附和分散;使用酸性pt ( no _ 2 ) _ 2 ( nh _ 3 ) _ 2作为前躯体,可以使前躯体离子和碳载体表面的酸性含氧官能团发生离子交换反应,使得前躯体离子吸附量增大,分散更加均匀,以上三种因素的选取都可以得到催化活性更高的pt / c催化剂。