کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1487463 | 1510698 | 2016 | 5 صفحه PDF | دانلود رایگان |
• A hydrothermal route to BiVO4-coated carbon fibers was proposed.
• BiVO4 coating growth was strongly influenced by hydrothermal time and initial pH value.
• At pH 2, BiVO4-coated carbon fibers can be easily obtained hydrothermally at 180 °C for 5 h.
• They have a good response to visible light and exhibit excellent photocatalytic ability.
A good quality of BiVO4-coated carbon fibers was successfully prepared at 180 °C for 5 h by a hydrothermal process. The results showed that hydrothermal time and initial pH value as key processing parameters had significant influence on BiVO4 coating growth on carbon fibers. At 180 °C and pH = 2, fabricating BiVO4 coatings with a good crystallization would take no less than 3 h. Acidic environment more favored the isotropic growth of BiVO4 crystallites with a huge particle size, while increasing pH value was beneficial to their anisotropic growth but inhibited their nucleus formation to result in the reduction of BiVO4 particle numbers. BiVO4-coated carbon fibers exhibited a better photocatalytic performance than normal powdery BiVO4.
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Journal: Materials Research Bulletin - Volume 77, May 2016, Pages 253–257