Li Yue, Zuo Hong-Fen, Guo Yuan-Ru, Miao Ting-Ting, Pan Qing-Jiang
Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, China.
Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China.
Nanoscale Res Lett. 2016 Dec;11(1):260. doi: 10.1186/s11671-016-1474-x. Epub 2016 May 21.
With the assistance of sodium lignosulfonate, hierarchical nanoflake-array-flower nanostructure of ZnO has been fabricated by a facile precipitation method in mixed solvents. The sodium lignosulfonate amount used in our synthetic route is able to fine-tune ZnO morphology and an abundance of pores have been observed in the nanoflake-array-flower ZnO, which result in specific surface area reaching as high as 82.9 m(2) · g(-1). The synthesized ZnO exhibits superior photocatalytic activity even under low-power UV illumination (6 W). It is conjectured that both nanoflake-array structure and plenty of pores embedded in ZnO flakes may provide scaffold microenvironments to enhance photocatalytic activity. Additionally, this catalyst can be used repeatedly without a significant loss in photocatalytic activity. The low-cost, simple synthetic approach as well as high photocatalytic and recycling efficiency of our ZnO nanomaterials allows for application to treat wastewater containing organic pollutants in an effective way.
在木质素磺酸钠的辅助下，通过一种简便的沉淀法在混合溶剂中制备了具有分级纳米片状阵列花状结构的氧化锌。我们合成路线中使用的木质素磺酸钠的量能够微调氧化锌的形貌，并且在纳米片状阵列花状氧化锌中观察到大量孔隙，这使得比表面积高达82.9 m²·g⁻¹。即使在低功率紫外光照射（6 W）下，合成的氧化锌也表现出优异的光催化活性。据推测，纳米片状阵列结构以及嵌入氧化锌薄片中的大量孔隙都可能提供支架微环境以增强光催化活性。此外，这种催化剂可以重复使用，而光催化活性不会有显著损失。我们的氧化锌纳米材料低成本、简单的合成方法以及高光催化和循环利用效率使其能够有效地应用于处理含有有机污染物的废水。
