CuO纳米结构阵列的简易合成及其光催化性质(英文)

Facile Synthesis and Photocatalytic Property of CuO Nanostructure Arrays

利用一种简便的一步反应路线,通过调节反应温度,选择性地合成出两种有序排列的氧化铜纳米阵列,即成束的一维(1D)纳米带和紧密排列的二维(2D)纳米片.系统研究了产物的物相和形貌随反应时间的演变情况,结果表明两种氧化铜纳米结构阵列分别是通过氧化→生长→脱水和氧化→脱水→生长过程形成的,其中动力学因素控制的成核与生长过程决定了氧化铜纳米结构的最终形貌.模拟太阳光辐射光催化降解有机染料罗丹明B(RhB),测试了所制备的氧化铜纳米结构阵列的光催化活性.本工作为制备新颖的多级纳米结构材料提供了一种简单且经济的合成路线,这些纳米材料将在多个领域体现出重要的应用潜力.

Two kinds of well-aligned CuO nanostructured arrays composed of bundles of one-dimensional（1D） nanoribbons and densely packed two-dimensional（2D） nanosheets were selectively synthesized via a convenient one-step route by adjusting the reaction temperature.Detailed time-dependent evolutions of the morphology and phase were systematically studied and the formation of both CuO nanostructured arrays was shown to be due to oxidation→ growth → dehydration and oxidation → dehydration → growth processes,respectively.The kinetically controlled nucleation and growth determined the final morphology of the CuO nanostructures.The photocatalytic activity of the as-prepared CuO nanostructured arrays was evaluated by the photodegradation of Rhodamine B（RhB） dye under simulated sunlight.This work provides a simple and economical route for the preparation of novel hierarchical nanomaterials which are expected to present a number of promising applications in various fields.