Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 555, Issue -, Pages 342-351Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.07.103
Keywords
Metal-organic frameworks; Heterojunction; Photo-reduction; Cr (VI) removal; Visible light response
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Funding
- Key Project of Natural Science Foundation of Liaoning Province of China [20170540578]
- Scientific Research Foundation of Education Department of Liaoning Province of China [LQ2019023]
- Undergraduate Training Programs for Innovation and Entrepreneurship of Liaoning Province of China [201710165000305]
- National Natural Science Foundation of China [21501138]
- Natural Science Foundation of Hubei Province of China [2015CFB177]
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An Ag/AgCl/NH2-UiO-66 hybridized photocatalyst was successfully constructed via facile solvothermal with UV reduction method for efficient photocatalytic Cr (VI) reduction. The photoelectrochemical data indicate that compared with the UiO-66, the charge separation and transfer efficiency of Ag/AgCl/NH2-UiO-66 heterojunction is significantly enhanced due to the introduction of amine functionalization and formation of inorganic-organic hybrid. The surface plasmon resonance (SPR) effect deriving from Ag nanoparticles (NPs) largely extends photo-response range whilst the separation efficiency of photo generated electrons and holes is improved significantly. The synthesized Ag/AgCl/NH2-UiO-66 hybrid system shows ameliorated structural stability and superior photocatalytic activity for Cr (VI) reduction under visible light irradiation, which is 1.7 times higher than that of the bare UiO-66. Furthermore, the possible mechanism of Cr (VI) reduction is proposed by analyzing electron transfer path in the ternary Ag/AgCl/NH2-UiO-66 hybridized system. (C) 2019 Elsevier Inc. All rights reserved.
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