期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 17, 期 36, 页码 23489-23495出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp04374c
关键词
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资金
- Henan Joint Funds of the National Natural Science Foundation of China [U1404506]
- National Natural Science Foundation of China [51502146]
- Natural Science Foundation of Henan Department of Science Technology [142102210477]
- Natural Science Foundation of Henan Department of Education [14A150021]
- Natural Science Foundation of Nanyang Normal University [ZX2014039]
- Graduate Innovation Foundation of Nanyang Normal University [2015CX005]
In this paper, BiOI@(BiO)(2)CO3 facet coupling heterostructures were synthesized via exfoliation and ion exchange, and characterized by X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectra (DRS), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectra and valence-band XPS spectra. With the reaction time increasing, more BiOI can be transformed to (BiO)(2)CO3, and BiOI@(BiO)(2)CO3 facet coupling heterostructures were obtained. The photocatalytic results showed that BiOI@(BiO)(2)CO3 displays much higher photocatalytic activity than BiOI and (BiO)(2)CO3 under visible-light. The photocatalytic mechanism study revealed that BiOI@(BiO)(2)CO3 has strong adsorption for RhB molecules due to the ultrathin nanosheets and higher BET, and displays better separation efficiency of photoinduced charge carriers and higher photocurrent due to the {001}/{001} facet coupling.
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