Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 511, Issue -, Pages 268-276Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.10.005
Keywords
g-C3N4; Kaolinite; Illite; Photocatalyst; Rhodamine B
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Funding
- National Natural Science Foundation of China [51504263]
- Fundamental Research Funds for the Central Universities [2015QH01, 2010YH10]
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To overcome rapid electron-hole recombination and low adsorption capacity of single g-C3N4 photocatalyst, the present work reports on the fabrication of two kinds of visible-light-driven composite photocatalysts (g-C3N4/kaolinite and g-C3N4/illite composites). 2D/2D assembly was successfully achieved in this work. Furthermore, the as-synthesized composites exhibited significantly enhanced photocatalytic activity under visible-light irradiation, whose reaction rate constants were almost 4.13 times (g-C3N4/kaolinite) and 3.18 times (g-C3N4/illite) that of pure g-C3N4. A plausible reaction mechanism over the as-prepared composite photocatalysts was also proposed based on the experimental results obtained. The photocatalytic enhancement of synthesized composites should be attributed to the intimate interface contact between g-C3N4 and layered minerals, resulting in better dispersion performance, higher charge separation efficiency as well as stronger adsorption ability. (C) 2017 Elsevier Inc. All rights reserved.
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