Fabrication of highly ordered Ta2O5 and Ta3N5 nanorod arrays by nanoimprinting and through-mask anodization
Fabrication of highly ordered Ta2O5 and Ta3N5 nanorod arrays by nanoimprinting and through-mask anodization
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DOI：
10.1088/0957-4484/25/1/014013
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发表时间：
2014-01
期刊：
影响因子：
3.5
通讯作者：
Yanbo Li;K. Nagato;J. Delaunay;J. Kubota;K. Domen
中科院分区：
文献类型：
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作者：
Yanbo Li;K. Nagato;J. Delaunay;J. Kubota;K. Domen
以纳米压印法制备的高度有序的多孔阳极氧化铝薄膜为掩模，通过掩模穿透阳极氧化在Ta衬底上原位生长出直径、长度和分布均匀的Ta2O5纳米棒阵列。Ta2O5纳米棒阵列进一步转变为Ta3N5纳米棒阵列，而不会因氮化而破坏纳米棒结构。以磷酸钴为共催化剂对Ta3N5纳米棒阵列进行表面修饰后，实现了太阳能驱动的光电化学分解水，最大太阳能转换效率为0.36%。Ta2O5和Ta3N5纳米棒阵列在催化、光子学、紫外光探测和太阳能转换等领域具有潜在的应用前景。
Using highly ordered porous anodic alumina membrane fabricated with the aid of nanoimprinting as a mask, Ta2O5 nanorod array with uniform diameter, length, and distribution is grown in situ on a Ta substrate by through-mask anodization. The Ta2O5 nanorod array is further transformed into Ta3N5 nanorod array without damaging the nanorod structure by nitridation. Solar-driven photoelectrochemical water splitting with a maximum solar energy conversion efficiency of 0.36% is demonstrated with the Ta3N5 nanorod array after modifying the surface with cobalt-phosphate as a co-catalyst. The Ta2O5 and Ta3N5 nanorod arrays have potential applications in catalysis, photonics, UV photodetection and solar energy conversion.