Back to Search
Start Over
Two highly stable inorganic–organic hybrid 3D frameworks based on Cu–Ln incorporated polyoxometalates for selective dye removal and proton conduction.
- Source :
- CrystEngComm; 4/28/2021, Vol. 23 Issue 16, p2973-2981, 9p
- Publication Year :
- 2021
-
Abstract
- Two novel inorganic–organic hybrid 3D TM–Ln incorporated POM-based frameworks, H<subscript>2</subscript>[Cu<subscript>2</subscript>OL<subscript>3</subscript>(H<subscript>2</subscript>O)<subscript>2</subscript>][Ce(L)(H<subscript>2</subscript>O)<subscript>3</subscript>(PW<subscript>11</subscript>O<subscript>39</subscript>)]·17H<subscript>2</subscript>O (1) and H<subscript>4</subscript>[CuL<subscript>3</subscript>]<subscript>2</subscript>[Ln(H<subscript>2</subscript>O)<subscript>3</subscript>(PW<subscript>11</subscript>O<subscript>39</subscript>)]<subscript>2</subscript>·28H<subscript>2</subscript>O (2) (L = 4,4′-bipyridine), were hydrothermally synthesized at different temperatures. Structural analysis reveals that both compounds are constructed from [Ln(PW<subscript>11</subscript>O<subscript>39</subscript>)]<superscript>4−</superscript> polyoxoanions and different copper complexes. Interestingly, in compound 1, 2D copper complex layers and 1D chain [Ln(PW<subscript>11</subscript>O<subscript>39</subscript>)]<superscript>4−</superscript> polyoxoanions interconnect to form a 3D framework. In contrast, in compound 2, 1D copper complex chains join the 2D [Ln(PW<subscript>11</subscript>O<subscript>39</subscript>)]<superscript>4−</superscript> layers to give rise to a 3D framework. Both compounds exhibit excellent chemical stability. Furthermore, the dye adsorption and proton conduction properties of both compounds were also investigated. The conductivities of 1 and 2 are 3.175 × 10<superscript>−4</superscript> S cm<superscript>−1</superscript> and 1.750 × 10<superscript>−4</superscript> S cm<superscript>−1</superscript> at 85 °C and 98% RH, respectively. Dye adsorption studies indicate that they can selectively adsorb cationic dyes MB, CV and BR over anionic dyes MO, AO and large cationic RhB. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYOXOMETALATES
BASIC dyes
COPPER compounds
PROTONS
CHEMICAL stability
Subjects
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 23
- Issue :
- 16
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 150036711
- Full Text :
- https://doi.org/10.1039/d1ce00218j