Honeycomb-like ZnO Mesoporous Nanowall Arrays Modified with Ag Nanoparticles for Highly Efficient Photocatalytic Activity.
Honeycomb-like ZnO Mesoporous Nanowall Arrays Modified with Ag Nanoparticles for Highly Efficient Photocatalytic Activity.
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DOI：
10.1038/s41598-017-11100-8
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发表时间：
2017-09-14
影响因子：
4.6
通讯作者：
Li Z
中科院分区：
文献类型：
--
作者：
Feng Y;Wang G;Liao J;Li W;Chen C;Li M;Li Z
设计并成功地在Al箔上合成了具有高效光催化活性的新型蜂窝状ZnO介孔纳米阵列（MNWAs）。ZnO-MNWAs的纳米壁具有中孔，具有较大的表面积。ZnO- mnwas对可见光的吸收明显强于ZnO纳米线，其光催化活性为ZnO纳米线的5.97倍，带隙能量为3.12 eV。此外，铝箔作为良好的电子导体，有利于光致电子-空穴对的分离。用适量的银纳米粒子修饰ZnO-MNWAs后，其光催化活性进一步增强。Ag纳米粒子最优用量的ZnO- mnwas的光催化活性是ZnO纳米线的9.08倍，是纯ZnO- mnwas的1.52倍。
A new structure of honeycomb-like ZnO mesoporous nanowall arrays (MNWAs) with highly efficient photocatalytic activity was designed and successfully synthesized on Al foil by hydrothermal method. The nanowalls of ZnO-MNWAs have mesopores, which possess a large surface area. The visible light absorption of ZnO-MNWAs was efficiently stronger than ZnO nanowire, resulting in that the photocatalytic activity of ZnO-MNWAs, whose bandgap energy was 3.12 eV, was 5.97 times than that of ZnO nanowires in the degradation of methyl orange. Besides, Al foil acted as a good electron conductor which was beneficial to the separation of photo-induced electron-hole pairs. After modifying ZnO-MNWAs with a proper amount of Ag nanoparticles (NPs), photocatalytic activity could be further enhanced. The photocatalytic activity of ZnO-MNWAs with the optimal amount of Ag NPs was 9.08 times than that of ZnO nanowires and 1.52 times than that of pure ZnO-MNWAs.
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