引用本文:
张汉昌, 左孝兵, 季明荣, 吴守国. 强碱溶液中阳极极化的玻碳电极特性[J]. 物理化学学报,
1996, 12(07): 649-653.
doi:
10.3866/PKU.WHXB19960714
Citation: Zhang Han-Chang, Zuo Xiao-Bing, Ji Ming-Rong, Wu Shou-Guo. Properties of Anodically Oxidative Glass Carbon Electrodes(GCE) in Strong Alkaline solutions[J]. Acta Physico-Chimica Sinica, 1996, 12(07): 649-653. doi: 10.3866/PKU.WHXB19960714
Citation: Zhang Han-Chang, Zuo Xiao-Bing, Ji Ming-Rong, Wu Shou-Guo. Properties of Anodically Oxidative Glass Carbon Electrodes(GCE) in Strong Alkaline solutions[J]. Acta Physico-Chimica Sinica, 1996, 12(07): 649-653. doi: 10.3866/PKU.WHXB19960714
English
Properties of Anodically Oxidative Glass Carbon Electrodes(GCE) in Strong Alkaline solutions
Abstract:
The surface properties of GCE treated by anodic polarization in strong alkaline solutions are makedly different from that of polished GCE. XPS results show thta more oxygenic groups as carbonyl and acid anhydride are formed on the electrode surface, the ratio of O/C increases, C1s and O1s peaks shift to higher binding energies. Moreover, the adsorptivity of the treated GCE decreases and shows no obvious adsorption for Fe2+ in H2SO4 solution. On the other hand, behaviour of the electrode reaction is also prominently improved. The background current is less, the electron transfer rate is greatly speeded up and the reverse of the electrode reaction for Fe3+/2+, Eu3+/2+ is effectively enhanced for treated GCE.
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Key words:
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GCE
- / Anodic polarization
- / XPS
- / Strong alkaline solutions
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