Journal
RSC ADVANCES
Volume 5, Issue 73, Pages 59630-59637Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra09573e
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Funding
- National Natural Science Foundation of China [21371042, 21271056]
- Ministry of Education and Specialised Research Fund for the Doctoral Program of Higher Education [20122329110001]
- Natural Science Foundation of Heilongjiang Province [ZD2015001]
- Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University)
- Ministry of Education
- Doctoral initiation Foundation of Harbin Normal University [KGB201213]
- Program for Scientific and Technological Innovation Team Construction in Universities of Heilongjiang Province [2011TD010]
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A novel high-efficiency photo-/electro-catalyst based on phosphomolybdate (H(4)bth)[{Mn-2(H2O) 3} {Sr subset of(P6Mo2Mo16O73)-Mo-V-O-VI}]center dot 3H(2)O (1) (bth = 1,6-bis(triazole) hexane), has been hydrothermally synthesized and characterized by X-ray crystallographic analyses, FT-IR, UV-vis, TG-DTA, XRD, XPS, and the elemental analyses. Compound 1 is an eight-connected 2-D layer structure, which represents the highest-connected assembly of basket-type POMs. The compound exhibits universal high-efficient degradation ability for the azo dyes MB, RhB, and AP under UV and visible light irradiation. The catalyst has a long lifetime and can be recovered and reused with a slight loss of reactivity. The major photoreaction pathways of three dyes on the surface of catalyst 1 were detected by a series of radical trapping experiments. The result suggests that O-center dot(2)-, (OH)-O-center dot radicals and photogenerated h(+) play different roles in the degradation process. The diffuse reflectivity spectrum provides essential evidences for the highly-efficient oxidation performance of basket-liked POMs. The compound also shows good bifunctional electrocatalytic behavior for oxidation of AA and reduction of NO2-.
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