Effective photocatalytic and bifunctional electrocatalytic materials based on Keggin arsenomolybdates and different transition metal capped assemblies
| Autor: | Mao-lin Zhang, Feng-rui Li, Jinghua Lv, Kun-peng Wang, Fan-xue Meng, Baibin Zhou, Kai Yu |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
010405 organic chemistry chemistry.chemical_element Butane General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences chemistry.chemical_compound Crystallography Transition metal chemistry Yield (chemistry) Photocatalysis Imidazole General Materials Science Bifunctional Linker |
| Zdroj: | CrystEngComm. 20:3522-3534 |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/c8ce00550h |
| Popis: | Three novel Keggin arsenomolybdates with transition metal modifying caps, (Hbimb)(H2bimb)[AsMoVI8VV4Co2O40] (1), (Hbimb)2(H2bimb)0.5[AsMoVI8VV4Cu2O40]·1.5H2O (2), and [CuI(imi)2][{CuI(imi)2}4{AsMoV6VVI6O40(VIV2O2)}] (3) (bimb = 1,4-bis(imidazol-l-yl)butane; imi = imidazole), were obtained via altering the solution pH and the organic ligands in the reaction system, and were characterized via routine techniques. Compounds 1 and 2 are tetra-vanadium substituted {AsMoVI8VV4O40} clusters capped by two Co2+ or Cu2+ cations at two symmetrical pit positions of two opposite {Mo4O18} tetramers, and these represent the first tetra-vanadium substituted bi-cobalt(II)/copper(II) capped assemblies. The basic unit of compound 3 is one hexa-electron-reduced Keggin polyoxoanion {AsMoV6MoVI6O40} capped by two {VO5} units at the same positions. The adjacent basic units were bonded together via the square binuclear linker {Cu2(imi)4O2} to yield an infinite 1D cap-to-cap chain, which was further aggregated together in A–B–A–B mode via a pair of {Cu(1)(imi)2} linkers, forming an unique 2D layer. Compounds 1–3 show bifunctional electrocatalytic character and effective photocatalytic performance toward the degradation of typical dyes under UV irradiation. |
| Databáze: | OpenAIRE |
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