In:
Chemistry – An Asian Journal, Wiley, Vol. 12, No. 19 ( 2017-10-05), p. 2597-2603
Abstract:
In this paper, an Ag‐doped WO 3 (and MoO 3 ) composite has been prepared by following a simple micelle‐directed method and high‐temperature sintering route. The as‐prepared samples were characterized by X‐ray diffraction, inductively coupled plasma, transmission electron microscopy, X‐ray photoelectron spectroscopy, UV/Vis diffuse reflectance spectroscopy, Brunauer–Emmett–Teller, photoluminescence spectroscopy, and electrochemical impedance spectroscopy techniques. The photocatalytic experiments reveal that their oxygen‐production rates are up to 95.43 μmol (75.45 μmol) for Ag‐doped WO 3 (MoO 3 ), which is 9.5 (7.3) times higher than that of pure WO 3 : 9.012 μmol (MoO 3 : 9.00 μmol) under visible‐light illumination ( λ ≥420 nm), respectively. The improvement of their photocatalytic activity is attributed to the enhancement of their visible‐light absorption and the separation efficiency of photogenerated carriers by Ag doping. Moreover, Ag‐doped WO 3 (MoO 3 ) also shows excellent adsorption of rhodamine B (RhB) and methylene blue (MB) in aqueous solution, with maximum adsorption capacities towards RhB and MB of 822 and 820 mg g −1 for Ag‐doped WO 3 , and 642 and 805 mg g −1 for Ag‐doped MoO 3 , respectively.
Type of Medium:
Online Resource
ISSN:
1861-4728
,
1861-471X
DOI:
10.1002/asia.201700951
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2233006-9
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