Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 516, Issue -, Pages 511-521Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.01.071
Keywords
Ag/Ag2O; Composites; Solid-state synthesis; Photocatalyst; Semiconductor
Categories
Funding
- National Natural Science Foundation of China [21471127, U1503292, 21771157]
- Natural Science Foundation of Xinjiang Province [2014711004, 2014211A013]
Ask authors/readers for more resources
Ag/Ag2O composites were prepared via an extremely simple solvent-free chemical technique. The obtained Ag/Ag2O samples exhibited superior visible-light degradation efficiency for methyl orange removal. The degradation rate constant of as-obtained composite is almost 2 times as that of commercial Ag2O, and has only little change after five cycles of utilization. The excellent photocatalytic properties of Ag/Ag2O materials could be ascribed to desirable absorption property and surface plasmon resonance of metal silver on the surface of semiconductor Ag2O. Meanwhile, the unstable and photo-sensitive disadvantages of commercial Ag2O due to the photocorrosion could be largely suppressed in the presence of metallic Ag for Ag/Ag2O composites, which plays an important role as an electron sink to receive the photo-generated electrons from Ag2O, accordingly restraining the reduction of Ag+ in Ag2O and improving the recyclability of Ag2O. With the assistance of scavengers and ESR technique, the h(+) and center dot O-2(-) were proved to be crucial reactive species in the pathways of photocatalytic degradation reaction. (C) 2018 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available