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Sun, Kaiyue; Li, Mengchao; Zhou, Hualei; Ma, Xiaohui; Li, Wenjun
Materials, 07/2023, Letnik: 16, Številka: 14Journal Article
NiTiOsub.3-BiOBr heterostructured photocatalysts were constructed via precipitation, calcination and hydrothermal treatments. Various characterizations demonstrated that BiOBr nanosheets were decorated on NiTiOsub.3 nanoparticals, forming porous rod-like heterojunctions. Compared with independent NiTiOsub.3 and BiOBr, the composites with optimal BiOBr content presented highly improved visible-light photocatalytic efficiency. The degradation rates of Rhodamine B (RhB) and tetracycline (TC) reached 96.6% in 1.5 h (100% in 2 h) and 73.5% in 3 h, which are 6.61 and 1.53 times those of NiTiOsub.3, respectively. The result is an improved photocatalytic behavior from the formation of heterojunctions with a large interface area, which significantly promoted the separation of photogenerated carriers and strengthened the visible-light absorption. Based on the free radical capture experiments and band position analysis, the photodegradation mechanism of type-II heterojunction was deduced. This study provides a new way to fabricate highly efficient NiTiOsub.3-based photocatalysts for degrading certain organics.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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