Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 534, Issue -, Pages 1-11Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.09.013
Keywords
Black phosphorus nanosheets; BP-Ag/TiO2 nanocomposite; Photocatalysis; Ag clusters; Methylene blue
Categories
Funding
- National Natural Science Foundation of China [61705143/61235012/61378091/61525503/61620106016]
- China Postdoctoral Science Foundation [2018M630979]
- National Basic Research Program of China [2015CB352005]
- Guangdong Natural Science Foundation Innovation Team [2014A030312008]
- Hong Kong, Macao and Taiwan cooperation innovation platform AMP
- major projects of international cooperation in Colleges and Universities in Guangdong Province [2015KGJHZ002]
- Science and Technology Innovation Commission of Shenzhen [KQJSCX20170327151457055/JCYJ20150930 104948169/JCYJ20160328144746940/GJHZ20160226202139185]
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The efficient utilization of solar energy for environmental cleaning has attracted great attention, where the key is to efficiently harvest the visible and near-infrared (NIR) light which occupies approximately 95% of the solar light energy. Recently, black phosphorus (BP), as a new staring 2D material, has been extensively studied as photocatalytic materials due to its broad light absorption and tunable bandgap. Herein, we report a novel ternary nanocomposite, BP-Ag/TiO2, prepared through controlled deposition of Ag clusters on the surface of TiO2 nanocrystals and then incorporated to BP nanosheets. The BP-Ag/TiO2 nanocomposite has shown excellent photocatalytic activity towards the degradation of methylene blue (MB) under visible and NIR light irradiation. About 100% and even 25% of MB was degraded in 85 min under >420 nm and >780 nm irradiation, respectively. The enhanced photocatalytic activity of BP-Ag/TiO2 nanocomposite was mainly ascribed to the sensitization of BP nanosheets by fully harvest of solar light and high electron-hole separation efficiency. We believe that the BP-Ag/TiO2 nanocomposite will be an effective photofunctional material in full-spectrum solar energy conversion and opens up a new door for the development of solar light driven photocatalysts for the remediation of environmental pollution. (C) 2018 Elsevier Inc. All rights reserved.
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