Two highly stable inorganic–organic hybrid 3D frameworks based on Cu–Ln incorporated polyoxometalates for selective dye removal and proton conduction

Abstract

Two novel inorganic-organic hybrid 3-D TM-Ln incorporated POM-based frameworks, H2[Cu2OL3(H2O)2][Ce(L)(H2O)3(PW11O39)]·17H2O (1) and H4[CuL3]2[Ln(H2O)3(PW11O39)]2·28H2O (2), (L = 4,4'-bipyridine) were hydrothermally synthesized at different temperatures. Structural analysis reveals that both compounds are...

Hourglass-Type Polyoxometalate-Based Crystalline Material as an Efficient Proton-Conducting Solid Electrolyte

“…Hitherto, the proton conductivity of CUST-571 reached 4.54 × 10 –3 S cm –1 at 85 °C and 98% RH, which is much higher than those of most of the POM-based hybrid proton-conducting composites (Table S4). , …”

“…Hitherto, the proton conductivity of CUST-571 reached 4.54 × 10 −3 S cm −1 at 85 °C and 98% RH, which is much higher than those of most of the POM-based hybrid proton-conducting composites (Table S4). 30,31 In order to investigate the mechanism, the activation energy (E a ) of CUST-571 was estimated usingthe Arrhenius equation. 32 We inferred that the activation energy value (E a ) for CUST-571 is ca.…”

State-of-the-art advances in the syntheses, structures, and applications of polyoxometalate-based metal–organic frameworks

“…In comparison with saturated Keggin-type POM-MOFs, only a few mono-vacant Keggin-type POM-MOFs were discovered in the past decades, [90][91][92][93][94][95] which may be related to the reason that vacant sites on mono-lacunary Keggin-type POM BBs are easy to bond with oxyphilic RE or TM cations, generally resulting in purely inorganic RE-or TM-bridged polymeric POM aggregates or inorganic-organic hybrid extended frameworks with organic ligands as ornaments. [96][97][98][99] Thus, the synthesis of lacunary-POM-based MOFs remains still a great challenge.…”

Structure-induced selective adsorption of diverse dyes and Cr(vi) photoreduction using two new polyoxometalate-based metal–viologen complexes

“…Some POMOCs have been explored and used for the adsorption of dyes by several research groups. 22–25 Most of the POMOCs rely on pore adsorption or chemical adsorption, and their adsorption efficiency is not excellent. Some POMOCs also possess semiconductor properties, which give them photocatalytic capabilities with adjustable energy levels and electronic characteristics.…”