| Autor: |
Dayu Li, Zhongyang Liang, Wentao Zhang, Shuyu Dai, Chao Zhang |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Materials Research Express, Vol 8, Iss 1, p 015025 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2053-1591 |
| DOI: |
10.1088/2053-1591/abdc3b |
| Popis: |
In this work, an one-step solvothermal synthesis method is used to prepare TiO _2 -reduced graphene oxide (RGO)-CuO/Fe _2 O _3 ternary composite photocatalysts with TiO _2 and CuO/Fe _2 O _3 nanoparticles coated RGO, while the structures and photocatalytic performance of these synthesized ternary composite photocatalysts are studied. It is found that Cu ^2+ and Fe ^3+ are substituted for Ti ^4+ into the crystal lattice of anatase TiO _2 in these prepared ternary composite photocatalysts. TiO _2 and CuO/Fe _2 O _3 nanoparticles are uniformly coated on the surface of RGO and closely contact with each other. The Cu/Fe doping has obviously improved the absorption ability on the visible light, and the bandgap of the ternary composite can be reduced. Under visible light irradiation, by increasing the Cu/Fe doping amount, the photocatalytic performance can be improved until the Cu and Fe contents reached 0.075 wt.% and 0.1 wt.%, respectively. The prepared products can be reused for eight cycles to degrade the methyl orange solution, and it retains over 93% photocatalytic efficiency. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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