Photocatalytic performance of yttrium-doped CNT-ZnO nanoflowers synthesized from hydrothermal method
- 주제(키워드) 도움말 CNT-YZO NPs and NFs , Microstructural analysis , Porosity and surface area , Photocatalytic degradation/mechanism of MB
- 발행기관 ELSEVIER SCI LTD
- 발행년도 2021
- 총서유형 Journal
- 본문언어 영어
초록/요약 도움말
We synthesized yttrium-doped CNT-ZnO (CNT-YZO) nanoparticles (NPs) and nanoflowers (NFs) from the hydrothermal method at 130 degrees C. The effect of Y3+-concentrations in nanostructured CNT-YZO was determined in terms of the photocatalytic degradation of methylene blue (MB). Microstructural analysis showed the hexagonal cubic structure of ZnO regardless of Y-concentration or the addition of CNTs during the nucleation and growth. The specific surface area, total pore volume, and mean pore diameter of typical CNT-YZO NFs were observed to be 36.109 m(2)/g, 0.162 cm(3)/g, and 17.932 nm, respectively. The photocatalytic degradation performance of CNT-YZO NFs improved due to increase reactive sites of the catalyst and reduced recombination of photo-induced carriers. The surface-area normalized first-order decomposition rates (r/m(2)) of CNT-YZO NFs showed the highest photocatalytic degradation (99%). The CNT-YZO has produced a new kind of material for the photocatalytic degradation under the irradiation of visible light using a solar simulator. (C) 2021 Elsevier Ltd. All rights reserved.
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