We investigated sputtered nanocarbon films with respect to the effect of suppressing surface oxygen on their electrochemical properties. The nanocarbon film consisted of nanocrystallites with mixed sp² and sp³ bonds formed by unbalanced magnetron sputtering. Ultraviolet/ozone (UV/O₃) irradiation and electrochemical pretreatment (ECP) were conducted to change the surface oxygen concentration of nanocarbon film. X-ray photoelectron spectroscopy (XPS) measurements revealed that nanocarbon films with different amounts of surface oxygen could be prepared. In addition, we observed no significant increase of the surface roughness (R_a) at the angstrom level after treatments, owing to a stable structure containing 40% of sp³ bonds. The electrode characteristics, including the potential window and electrochemical properties for some redox species, such as Ru(NH₃)₆^3+/2+, were investigated. Some electrochemical measurements of zinc ions (Zn²⁺) and hydrogen peroxide (H₂O₂) showed that the electrochemical reaction was improved by suppressing the surface oxygen. These results clearly indicated that the low surface oxygen concentration plays an important role in these electrochemical reactions.

我们研究了溅射纳米碳膜抑制表面氧对其电化学性能的影响。纳米碳膜由通过不平衡磁控溅射形成的具有混合sp ²和sp ³键的纳米微晶组成。进行紫外线/臭氧（UV/O ₃）照射和电化学预处理（ECP）以改变纳米碳膜的表面氧浓度。X 射线光电子能谱 (XPS) 测量表明可以制备具有不同表面氧量的纳米碳膜。此外，由于含有 40% sp 的稳定结构，我们在处理后观察到埃级的表面粗糙度（R _a）没有显着增加。³债券。研究了电极特性，包括一些氧化还原物质（例如 Ru(NH ₃ ) ₆ ^3+/2+）的电位窗口和电化学特性。锌离子 (Zn ²⁺ ) 和过氧化氢 (H ₂ O ₂ ) 的一些电化学测量表明，通过抑制表面氧可以改善电化学反应。这些结果清楚地表明，低表面氧浓度在这些电化学反应中起着重要作用。