Partially conjugated polyvinyl chloride-modified TiO 2 nanoparticles for efficient visible-light-driven photocatalytic reduction of aqueous Cr(VI)
| Autor: | Zhanjun Yang, Yaoting Wen, Shuangzhi Liu, Yongcai Zhang, Qian Zhang, Aiping Zhu |
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| Rok vydání: | 2016 |
| Předmět: |
Aqueous solution
Materials science Chlorinated polyvinyl chloride Mechanical Engineering Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Polyvinyl chloride chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Mechanics of Materials Photocatalysis Organic chemistry General Materials Science 0210 nano-technology High-resolution transmission electron microscopy Visible spectrum Nuclear chemistry |
| Zdroj: | Materials Letters. 163:262-265 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2015.10.109 |
| Popis: | Partially conjugated polyvinyl chloride (CPVC)-modified TiO 2 nanoparticles were synthesized by heating the composite of polyvinyl chloride and TiO 2 nanoparticles in air at 150 °C for 1 h (the optimal heating duration among the investigated 0.5 h, 1 h, 2 h, 3 h and 4 h to obtain the most efficient CPVC/TiO 2 composite). The characterization results from X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy and high resolution transmission electron microscopy confirmed the formation of TiO 2 nanoparticles modified with CPVC. The UV–vis diffuse reflectance spectra indicated that the as-synthesized CPVC-modified TiO 2 nanoparticles had remarkable visible-light-absorbing ability. The photocatalytic experiments demonstrated that the as-synthesized CPVC-modified TiO 2 nanoparticles exhibited high photocatalytic activity in the reduction of aqueous Cr(VI) under visible-light ( λ >420 nm) irradiation, whereas sole CPVC and TiO 2 nanoparticles exhibited no photocatalytic activity in the reduction of aqueous Cr(VI) under visible-light ( λ >420 nm) irradiation. |
| Databáze: | OpenAIRE |
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