Hierarchically nanostructured CeO2 films with superhydrophilicity and corrosion resistance by coupling of surface topography and oxygen vacancies
Hierarchically nanostructured CeO2 films with superhydrophilicity and corrosion resistance by coupling of surface topography and oxygen vacancies
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通过表面形貌和氧空位的耦合，具有超亲水性和耐腐蚀性的分级纳米结构CeO2薄膜
DOI：
10.1016/j.matchemphys.2015.05.007
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发表时间：
2015-06
影响因子：
4.6
通讯作者：
Li Wen
中科院分区：
文献类型：
--
作者：
Xue Mingshan;Peng Na;Ou Junfei;Wang Fajun;Li Xibao;Li Wen
功能性超亲水材料因其防雾和传热/散热等潜在应用而受到越来越多的关注。在本研究中，无需紫外线照射或任何化学修饰，通过简单有效的一步电沉积方法成功制备了一种具有超亲水性和优异耐腐蚀性的CeO2薄膜。研究发现，由岛屿和微裂纹组成的分级纳米结构CeO2薄膜基于毛细管效应为水的扩散提供了快速通道，而源自氧空位的大量表面活性位点提高了与水分子的界面亲和力，共同导致了CeO2表面的超亲水性。基于在NaCl溶液中腐蚀前后一致的表面形貌和功函数，这种超亲水CeO2薄膜表现出优异的耐腐蚀性。这些结果对于理解和设计超亲水材料以及探索其潜在的工程应用具有重要意义。
Functional superhydrophilic materials have attracted increasing attention because of their potential applications such as antifogging and heat transfer/dissipation. In this study, without UV exposure or any chemical modification, a type of CeO2films with superhydrophilicity and excellent corrosion resistance have been successfully fabricated by a simple and effective one-step electrodeposition method. It is found that hierarchically nanostructured CeO2films consisting of islands plus microcracks provide the fast channel for water spreading based on capillary effect, while numerous surface active sites originating from oxygen vacancies improve the interfacial affinity for water molecules, together resulting in the superhydrophilicity of CeO2surface. Based on the consistent surface morphology and work function before and after corrosion in NaCl solution, such superhydrophilic CeO2films exhibit excellent corrosion resistance. These results will be significant to understand and design superhydrophilic materials as well as explore their potential engineering applications.
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影响因子：
5.3
作者：
Jun Fan;Xiaodong Wu;Lei Yang;D. Weng
通讯作者：
Jun Fan;Xiaodong Wu;Lei Yang;D. Weng
影响因子：
29.4
作者：
Ueda, Erica;Levkin, Pavel A.
通讯作者：
Levkin, Pavel A.
影响因子：
1.9
作者：
A. Baca;L. Klebanoff;M. Schulz;E. Paparazzo;D. A. Shirley
通讯作者：
A. Baca;L. Klebanoff;M. Schulz;E. Paparazzo;D. A. Shirley
影响因子：
4.6
作者：
G. Song;D. Haddad
通讯作者：
G. Song;D. Haddad
影响因子：
3.7
作者：
C. Zhang;A. Michaelides;D. King;S. Jenkins
通讯作者：
C. Zhang;A. Michaelides;D. King;S. Jenkins