Electrochemical removal of anodic aluminium oxide templates for the production of phase-pure cuprous oxide nanorods for antimicrobial surfaces
Electrochemical removal of anodic aluminium oxide templates for the production of phase-pure cuprous oxide nanorods for antimicrobial surfaces
复制标题
DOI：
10.1016/j.elecom.2020.106833
复制
发表时间：
2020-09
影响因子：
5.4
通讯作者：
K. Musselman;Louis-Vincent Delumeau;Roy A. Araujo;Haiyan Wang;J. MacManus‐Driscoll
中科院分区：
文献类型：
--
作者：
K. Musselman;Louis-Vincent Delumeau;Roy A. Araujo;Haiyan Wang;J. MacManus‐Driscoll
抗菌表面是那些使病原体丧失能力或杀死病原体的表面，这可以允许医院或植入物的自我消毒表面，确保更健康的停留和程序。Cu 2 O等亚铜化合物在使病毒和细菌失能方面特别有效，纳米棒阵列已被证明可以防止病原体的粘附并使细菌机械变形至其细胞壁破裂的程度。因此，Cu 2 O纳米棒阵列应该允许利用这两种效应。在目前的工作中，电化学方法介绍，其中Cu 2 O纳米棒形成在基板支撑的阳极氧化铝（AAO）模板保持在一个稳定的电化学电位在整个AAO模板的去除。这避免了在化学去除模板期间观察到的纳米棒从Cu 2 O到Cu的部分还原，这归因于来自模板制造过程的残余铝的存在，其与蚀刻剂反应并将纳米棒的电化学电势降低到有利于还原的值。使用电化学去除方法，证明了在ITO/玻璃衬底上可靠地生产相纯的、独立的、结晶的Cu 2 O纳米棒阵列。这种简单的方法与任何尺寸的纳米棒阵列兼容。
Antimicrobial surfaces are ones that incapacitate or kill pathogens landing on them, which could allow for self-sanitising surfaces for hospitals or implants, ensuring healthier stays and procedures. Cuprous compounds such as Cu2O are especially effective at incapacitating both viruses and bacteria, and nanorod arrays have been shown to prevent the adhesion of pathogens and mechanically deform bacteria to the point that their cell walls rupture. A Cu2O nanorod array should therefore allow for the exploitation of both of these effects. In the present work, an electrochemical method is introduced, where Cu2O nanorods formed in a substrate-supported anodic aluminium oxide (AAO) template are held at a stable electrochemical potential throughout the removal of the AAO template. This avoids the partial reduction of the nanorods from Cu2O to Cu that was observed during chemical removal of the template, which was attributed to the presence of residual aluminium from the template fabrication process that reacts with the etchant and lowers the electrochemical potential of the nanorods to a value that favours reduction. Using the electrochemical removal method, the reliable production of phase-pure, free-standing, crystalline Cu2O nanorod arrays on ITO/glass substrates is demonstrated. This simple method is compatible with nanorod arrays of any size.