CAJ | 학술논문

为了解铁的电结晶机理及润湿剂十二烷基硫酸钠(SDS)对铁电沉积阴极过程的影响，采用线性扫描伏安法、单电位阶跃计时电流法、交流阻抗谱等手段对由200 g/L FeSO4·7H2O、20 g/L H3BO3、50 g/L MnCl2和30 g/L配位剂组成的基础镀液和含0.2 g/L SDS的镀铁溶液中铁在玻碳电极上的电沉积行为进行了对比研究。结果表明，润湿剂的加入使铁电沉积的阴极极化增强。不管镀液中是否含有润湿剂，铁在玻碳电极上的电结晶都遵循三维瞬时成核理论，且在含有润湿剂的镀液中的结晶过程与理论模型有着更好的吻合程度。润湿剂的加入使反应物离子的扩散受阻，电荷传递电阻增大。这些变化可能与SDS在镀层表面的吸附和对表面张力的影响有关。
위료해철적전결정궤리급윤습제십이완기류산납(SDS)대철전침적음겁과정적영향，채용선성소묘복안법、단전위계약계시전류법、교류조항보등수단대유200 g/L FeSO4·7H2O、20 g/L H3BO3、50 g/L MnCl2화30 g/L배위제조성적기출도액화함0.2 g/L SDS적도철용액중철재파탄전겁상적전침적행위진행료대비연구。결과표명，윤습제적가입사철전침적적음겁겁화증강。불관도액중시부함유윤습제，철재파탄전겁상적전결정도준순삼유순시성핵이론，차재함유윤습제적도액중적결정과정여이론모형유착경호적문합정도。윤습제적가입사반응물리자적확산수조，전하전체전조증대。저사변화가능여SDS재도층표면적흡부화대표면장력적영향유관。
The electrodeposition behaviors of iron on glassy carbon electrode from the bath composed of FeSO4·7H2O 200 g/L, H3BO3 20 g/L, MnCl2 50 g/L, and complexing agent 30 g/L with and without 0.2 g/L sodium dodecyl sulfate (SDS) as wetting agent were comparatively studied by linear sweep voltammetry, single potential step chronoamperometry, and alternating current impedance spectroscopy to explore the mechanism of iron electrocrystallization and the influence of SDS on cathodic process of iron electrodeposition. The results showed that the cathodic polarization of iron electrodeposition is enhanced as a result of the addition of wetting agent. The electrocrystallization of iron on glassy carbon electrode follows the three-dimensional instantaneous nucleation theory no matter the plating bath contains wetting agent or not. The iron electrocrystallization in bath containing wetting agent is more consistent with the theoretical model. The diffusion of reactant ions is hindered due to the addition of wetting agent, resulting in an increase of charge transfer resistance. All of the above changes may have something with the adsorption of SDS and its effect on surface tension.