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对表面粗糙度不同的钛(Ti)基体进行抛光和喷砂处理,通过H2IrCl6和Mn(NO3)2水溶剂在处理后的基体上制备IrO2+MnO2涂层。采用扫描电子显微镜(SEM),场发射扫描电子显微镜(FESEM),循环伏安法(CV)和阳极极化曲线研究了不同表面粗糙度的IrO2+MnO2涂层的表面特性,结构和电催化活性。在所有通过喷砂处理的基体表面上制备的IrO2+MnO2涂层中,都可以分离出二氧化铱纳米棒,但通过抛光处理的涂层不能形成。通过喷砂处理的IrO2+MnO2涂层的qT,qo,qi和i/qT值远远高于抛光处理的涂层。表面粗糙度为1.3μm的IrO2+MnO2涂层比其他涂层具有更好的电催化活性。
The titanium (Ti) matrix with different surface roughness was polished and sandblasted, and the IrO2 + MnO2 coating was prepared on the treated matrix with H2IrCl6 and Mn (NO3) 2 aqueous solution. The surface properties, structure and electrocatalytic activity of IrO2 + MnO2 coatings with different surface roughness were studied by scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and anodic polarization curves . The iridium dioxide nanorods could be separated in all IrO2 + MnO2 coatings prepared on the surface of the grit blasted substrate, but could not be formed by the polished coating. The qT, qo, qi, and i / qT values for the sandblasted IrO2 + MnO2 coatings are much higher than for the polished coatings. The IrO2 + MnO2 coating with a surface roughness of 1.3 μm has better electrocatalytic activity than the other coatings.