Details

Autor(en) / Beteiligte

• Li, Feng-rui
• Lv, Jing-hua
• Yu, Kai
• Zhang, Mao-lin
• Wang, Kun-peng
• Meng, Fan-xue
• Zhou, Bai-bin

Titel

Effective photocatalytic and bifunctional electrocatalytic materials based on Keggin arsenomolybdates and different transition metal capped assemblies

Ist Teil von

• CrystEngComm, 2018, Vol.20 (25), p.3522-3534

Ort / Verlag

Cambridge: Royal Society of Chemistry

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Three novel Keggin arsenomolybdates with transition metal modifying caps, (Hbimb)(H 2 bimb)[AsMoVI8VV4Co 2 O 40 ] ( 1 ), (Hbimb) 2 (H 2 bimb) 0.5 [AsMoVI8VV4Cu 2 O 40 ]·1.5H 2 O ( 2 ), and [Cu I (imi) 2 ][{Cu I (imi) 2 } 4 {AsMoV6VVI6O 40 (VIV2O 2 )}] ( 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 {AsMoVI8VV4O 40 } clusters capped by two Co 2+ or Cu 2+ cations at two symmetrical pit positions of two opposite {Mo 4 O 18 } 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 {AsMoV6MoVI6O 40 } capped by two {VO 5 } units at the same positions. The adjacent basic units were bonded together via the square binuclear linker {Cu 2 (imi) 4 O 2 } 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.