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Electrodeposited ZnO Nanorods as Efficient Photoanodes for the Degradation of Rhodamine B
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-07-28 , DOI: 10.1002/pssa.202000349 Abderrahim Ait hssi 1 , Elhassan Amaterz 2 , Nabil labchir 1 , Lahoucine Atourki 3 , Ibrahim Yaacoub Bouderbala 4 , Abdeslam Elfanaoui 1 , Abdeljalil Benlhachemi 2 , Ahmed Ihlal 1 , Khalid Bouabid 1
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2020-07-28 , DOI: 10.1002/pssa.202000349 Abderrahim Ait hssi 1 , Elhassan Amaterz 2 , Nabil labchir 1 , Lahoucine Atourki 3 , Ibrahim Yaacoub Bouderbala 4 , Abdeslam Elfanaoui 1 , Abdeljalil Benlhachemi 2 , Ahmed Ihlal 1 , Khalid Bouabid 1
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Herein the synthesis of ZnO nanorods (NRs) by means of the one‐ and two‐step electrochemical deposition (ECD) process is focused upon. A comparison of the crystal structure, morphology, optical properties, and photoelectrocatalytic (PEC) activities of nanostructured ZnO cultivated by the two methods is conducted. X‐ray diffraction (XRD) analysis reveals that all samples annealed at 300 °C are polycrystalline and have a hexagonal (wurtzite) structure and significant improvement in the crystallinity of the sample deposited by the two‐step process. The morphological characterizations show that the NRs are well hexagonal and well oriented in the same sample. The optical spectra show a transmittance higher than 70% and direct bandgaps of 3.12 and 3.04 eV for the samples synthesized by one‐step and two‐step electrodeposition, respectively. The PEC properties of the films obtained are studied and reveal an efficient and rapid rhodamine B (RhB) azo dye degradation. In addition, the scavengers of reactive species as well as the kinetics during degradation are also studied and show that the superoxide radicals contribute significantly in degradation.
中文翻译：
电沉积的ZnO纳米棒可有效降解罗丹明B
本文着重介绍了通过一步和两步电化学沉积（ECD）工艺合成ZnO纳米棒（NRs）。进行了两种方法培养的纳米结构ZnO的晶体结构，形态，光学性质和光电催化（PEC）活性的比较。X射线衍射（XRD）分析表明，所有在300°C退火的样品都是多晶的，并且具有六方（纤锌矿）结构，并且通过两步法沉积的样品的结晶度有了显着改善。形态学特征表明，在同一样品中，NRs具有很好的六角形和良好的取向。光谱显示通过一步和两步电沉积合成的样品的透射率高于70％，直接带隙分别为3.12和3.04 eV。研究了获得的膜的PEC性能，并揭示了高效，快速的若丹明B（RhB）偶氮染料降解性能。此外，还研究了反应物种的清除剂以及降解过程中的动力学，结果表明，超氧化物自由基对降解具有重要作用。
更新日期：2020-09-08
中文翻译：
电沉积的ZnO纳米棒可有效降解罗丹明B
本文着重介绍了通过一步和两步电化学沉积（ECD）工艺合成ZnO纳米棒（NRs）。进行了两种方法培养的纳米结构ZnO的晶体结构，形态，光学性质和光电催化（PEC）活性的比较。X射线衍射（XRD）分析表明，所有在300°C退火的样品都是多晶的，并且具有六方（纤锌矿）结构，并且通过两步法沉积的样品的结晶度有了显着改善。形态学特征表明，在同一样品中，NRs具有很好的六角形和良好的取向。光谱显示通过一步和两步电沉积合成的样品的透射率高于70％，直接带隙分别为3.12和3.04 eV。研究了获得的膜的PEC性能，并揭示了高效，快速的若丹明B（RhB）偶氮染料降解性能。此外，还研究了反应物种的清除剂以及降解过程中的动力学，结果表明，超氧化物自由基对降解具有重要作用。
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