Layered Bi2MoO6/LDH hetero-structured composites with enhanced visible light photocatalytic activity
| Autor: | Hu Fengxian, Hongxia Liu, Yu Guiyun, Dai Yong, Jing Wu, Entian Cui |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Single component Visible light irradiation Visible light photocatalytic Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Hydrothermal circulation Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Photocatalysis Rhodamine B Degradation (geology) Electrical and Electronic Engineering |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:2572-2584 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-018-0532-9 |
| Popis: | Series of Bi2MoO6/NiAl-LDH hetero-junction photocatalysts were synthesized by a two-step hydrothermal method with a self-assembled process. It indicated that the in-situ intercalated NiAl-LDH showed a tight contact with Bi2MoO6 layers and thus exhibited the rapid transfer of photogenerated electrons on the interface. The photocatalytic performance was evaluated by the degradation of rhodamine B (RhB) under visible light irradiation. The resulted Bi2MoO6/NiAl-LDH sample showed a higher visible-light photocatalytic activity for the degradation of RhB than any single component. The optimal LDH content in Bi2MoO6/NiAl-LDH is 15% with the degradation efficiency for more than 90% during 60 min. The excessive amount of NiAl-LDH in Bi2MoO6/NiAl-LDH could reduce the light absorption efficiency of Bi2MoO6 and thus affected the generation of photoinduced electron–hole pairs. The enhanced photocatalytic activity and stability of Bi2MoO6/NiAl-LDH was attributed to the synergistic effects of the introduction of narrow band-gap NiAl-LDH and the construction of layered hetero-junction. Our synthetic method of self-assembly sheets has certain guided significance for the synthesis and application of other photocatalysts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink