Efficient visible-light-driven photocatalysis of flower-like composites of AgI nanoparticle dotting BiOI nanosheet
| Autor: | Gaowei Ouyang, Chuanguang Qin, Haidi Li, Jing Wang, Guang Tian, Jaafar Hasan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Photocatalysis Methyl orange Diffuse reflection Physical and Theoretical Chemistry Composite material 0210 nano-technology High-resolution transmission electron microscopy Photodegradation Visible spectrum Nanosheet |
| Zdroj: | Journal of Solid State Chemistry. 297:122044 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2021.122044 |
| Popis: | Nanosheet BiOI materials were synthesized using the precipitation-hydrothermal method. Subsequently, nanoparticle AgI/BiOI nanosheet composites were fabricated using an ion-exchange method and a controlled amount of BiOI. The phase composition, optical morphology, and absorption properties of the samples were determined using XRD, SEM, XPS, TEM, HRTEM, BET, and UV–Vis diffuse reflectance. Organic dyes, such as methyl orange (MO) and Coomassie brilliant blue R-250 (CBB), were used to check the composites’ photocatalytic performance undergoing photodegradation in visible light. The prepared composites had high purity, and the AgI nanoparticles were evenly loaded on the flower-like BiOI nanosheets, both absorbing the visible light. The 50% AgI NP/BiOI NS compound demonstrated the best visible photocatalytic activity and degraded rate of 96.9% and 97% of the MO and CBB dye, respectively, under visible light for 30 min. The photocatalytic activity of sole BiOI or AgI was poor, whereas the composites were much better. The composite with 50% AgI exhibited the best photocatalytic activity because of the formation of a heterojunction, which promotes the separation of photogenerated carriers, making AgI stable under visible-light irradiation. |
| Databáze: | OpenAIRE |
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