Glassy carbon plates were irradiated with 15 keV H~+ ion-beam in the fluence range of 1 × 10~(15)-3 × 10~(18) ion cm ~(-2). The influence of ion irradiation on surface morphology and topology was examined by scanning electron and atomic force microscopy. Structural changes were monitored by Raman spectrometry, while changes of wettability and the content of surface oxygen complexes were examined by contact angle measurements and temperature programmed desorption. Elastic recoil detection analysis was applied for determination of hydrogen concentration profiles in irradiated samples. Cyclic voltammetry was used for the assessment of the electrochemical properties of modified glassy carbon electrodes. It was concluded that there is critical fluence range (2 × 10~(17)-5 × 10~(17) ion cm ~(-2)) inside of which significant changes of glassy carbon properties occur.
展开▼
机译:用15 keV H~+离子束照射玻璃碳板,能量密度范围为1 × 10~(15)-3 × 10~(18) ion cm ~(-2)。通过扫描电子和原子力显微镜研究了离子辐照对表面形貌和拓扑的影响。通过拉曼光谱法监测结构变化,同时通过接触角测量和温度程序化解吸来检查润湿性和表面氧络合物含量的变化。弹性反冲检测分析用于测定辐照样品中的氢浓度分布。采用循环伏安法对改性玻璃碳电极的电化学性能进行评价。结果表明,存在临界能量密度范围(2 × 10~(17)-5 × 10~(17) 离子 cm ~(-2)),其中玻璃状碳性质发生显著变化。
展开▼