Enhanced photoelectrochemical and photocatalytic properties of 3D-hierarchical ZnO nanostructures
| Autor: | Nurdan Demirci Sankir, Demet Yolacan |
|---|---|
| Přispěvatelé: | TOBB ETU, Faculty of Engineering, Department of Material Science & Nanotechnology Engineering, TOBB ETÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü, Sankir, Nurdan Demirci |
| Rok vydání: | 2017 |
| Předmět: |
Nanostructure
Materials science Chemical bath deposition Inorganic chemistry chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 01 natural sciences chemistry.chemical_compound Materials Chemistry Methyl orange Photoelectrochemical Photocatalytic degradation Nanosheet Hydrogen production Potassium hydroxide Mechanical Engineering Metals and Alloys 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Mechanics of Materials ZnO Photocatalysis Wetting 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 726:474-483 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.07.314 |
| Popis: | In the present study, highly efficient and stable photocatalysts have been developed in order to achieve both organic material degradation and sunlight-driven hydrogen generation. More specifically, we investigated the influence of the surface wettability and types of the precursor anionic species on the morphology of the three-dimensional (3D) hierarchical zinc oxide (ZnO) nanostructures. It has been observed that nitrate and acetate based anionic sources resulted with the hand fan like and nanosheet morphologies, respectively. Adhesion of the ZnO nanostructures on the FTO coated glass has been improved via potassium hydroxide treatment, which also affected the morphology of the ZnO films. Well-adhered photoelectrodes for solar water splitting on FTO coated glass substrates with high applied photon-to-current efficiency have been prepared via simple and cost effective chemical bath deposition method. Finally, ZnO nanopowders with two different morphologies have been synthesized via also chemical bath deposition. These nanopowders were used to photocatalytic degradation of methyl orange dye and very high degree of degradation (95%) was achieved using ZnO-Acetate nanopowders, which had morphology of microspheres with nanosheets. © 2017 Elsevier B.V. |
| Databáze: | OpenAIRE |
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