Journal
CERAMICS INTERNATIONAL
Volume 45, Issue 15, Pages 19197-19205Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.06.167
Keywords
AgBr@g-C3N4/BiOBr; Ternary nanocomposite; Visible light driven; Photocatalytic materials
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Funding
- National Natural Science Foundation of China [51672113, 21776117, 21576125]
- '333' Project of Jiangsu Province [2018-6]
- China Postdoctoral Science Foundation [2017M611733, 2017M611715]
- Zhenjiang Social Development Project [SH2017059]
- High-end Research Team Project of Jiangsu Higher Vocational Education Institutions High-end Research Project [2018TDFX010]
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A novel ternary system AgBr@g-C3N4/BiOBr (AB@GCN/BOB) of sheet-like g-C3N4/BiOBr (GCN/BOB) architecture loaded with AgBr nanoparticles were first fabricated by an effective combination of hydrothermal and in situ ion-exchange methods. The prepared samples were investigated by various characterization techniques including XRD, FTIR spectra, SEM-EDS, XPS, DRS, PL spectra and photocurrent measurements. Subsequently, photodegradation experiment for the resultant samples was carried out using Rhodamine B (RhB) and tetracycline hydrochloride (TC) as organismas targeted pollutants under visible-light irradiation, indicates that AB@GCN/BOB ternary photocatalytic system exhibits greater photocatalytic activity than g-C3N4 (GCN), BiOBr, and GCN/BOB catalysts. Moreover, the highly enhanced activity was accredited to improved optical absorption and higher efficiency of separation/transfer of photoinduced h(+)/e(-) of AB@GCN/BOB system. Furthermore, the possible visible-light-responsive degradation mechanism of AB@GCN/BOB is discussed in detail, indicating superoxide radicals (center dot O-2(-)), photoinduced holes (h(+)) as the major active species during the photodegradation process.
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