Facilistic preparation of zinc oxide nanoarrays on nickel foam via a one-step chemical bath method for photocatalysis

IF 2 3区化学 Q4 CHEMISTRY, PHYSICAL

Chemical Physics Pub Date : 2024-08-13 DOI:10.1016/j.chemphys.2024.112420

Juan Zhou , Yang Zhang , Qingbo Ma , Yating Yuan , Qing Liu , Xiaoling Xu

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Abstract

One-dimensional ZnO nanoarrays (ZnO NAs) were prepared on nickel foam using a one-step chemical bath deposition method. SEM and XRD confirmed the successful preparation of ZnO nanoarrays. TEM and Raman spectroscopy confirmed the preferential orientation of the ZnO nanorods along the (0 0 2) crystal plane. The Ni/ZnO NAs composites exhibited excellent photocatalytic degradation activity for ciprofloxacin (CIP) under UV light. UV–visible diffuse reflectance and transient photocurrent response characterization revealed that compared with ZnO nanorod powder, the Ni/ZnO NA composites increased the light absorption and reduced the complexation rate of photogenerated electron-hole pairs, thus improving the photocatalytic efficiency. In addition, the electron work functions of the two substances were calculated by using the crystal faces of Ni (1 1 1) and ZnO (0 0 2), and the calculation results confirmed the electron transfer paths. Electron transfer pathways further confirmed the possible reaction mechanism of Ni/ZnO NA degradation of CIP. Finally, Mott–Schottky tests were used to investigate the structure of the energy bands of the material and reveal its photocatalytic mechanism.

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通过一步化学浴法在泡沫镍上方便地制备用于光催化的氧化锌纳米阵列

采用一步化学沉积法在泡沫镍上制备了一维氧化锌纳米阵列（ZnO NAs）。扫描电子显微镜和 XRD 证实成功制备了氧化锌纳米阵列。TEM 和拉曼光谱证实了氧化锌纳米棒沿 (0 0 2) 晶面的优先取向。在紫外光下，Ni/ZnO NAs 复合材料对环丙沙星（CIP）具有优异的光催化降解活性。紫外可见光漫反射和瞬态光电流响应表征表明，与 ZnO 纳米棒粉末相比，Ni/ZnO NA 复合材料增加了光吸收，降低了光生电子-空穴对的复合率，从而提高了光催化效率。此外，利用 Ni（1 1 1）和 ZnO（0 0 2）的晶面计算了两种物质的电子功函数，计算结果证实了电子转移路径。电子传递路径进一步证实了 Ni/ZnO NA 降解 CIP 的可能反应机制。最后，利用 Mott-Schottky 试验研究了该材料的能带结构，并揭示了其光催化机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Physics 化学-物理：原子、分子和化学物理

CiteScore

4.60

自引率

4.30%

发文量

278

审稿时长

39 days

期刊介绍： Chemical Physics publishes experimental and theoretical papers on all aspects of chemical physics. In this journal, experiments are related to theory, and in turn theoretical papers are related to present or future experiments. Subjects covered include: spectroscopy and molecular structure, interacting systems, relaxation phenomena, biological systems, materials, fundamental problems in molecular reactivity, molecular quantum theory and statistical mechanics. Computational chemistry studies of routine character are not appropriate for this journal.