A novel self-assembled Na{Cu₁₂Zn₄} multifunctional material: first report of a discrete coordination compound for detection of Ca²⁺ions and selective adsorption of cationic dyes in water

Abstract

A novel discrete Na{Cu12Zn4} unit is discovered with the ability to sense calcium ions (with ultra-low detection limit) as well as to adsorb cationic dyes in the aqueous phase with high performance.

Engineered Fe3 triangle for the rapid and selective removal of aromatic cationic pollutants: complexity is not a necessity

“…Only a few reports are there in the literature in which metal clusters or cages could be used for the selective adsorption of dyes. 54 …”

“…At a discrete level, the electrostatic, non-covalent, and van der Waals interactions play a key role in binding the dye with either free functionalize groups or available Lewis acid/base sites in the cluster. 54 It is a well-known fact that the adsorption is a surface phenomenon, and it largely depends on the structural and functional behavior of the adsorbent, size, and shape of the adsorbate, and surface characteristics of the adsorbent. There are various possible mechanisms reported in the literature for the adsorption process, i.e., acid-base interactions, electrostatic interactions, p-p interactions, hydrogen bonding, and ionexchange mechanism.…”

A new {Cu3–Gd2} cluster as a two-in-one functional material with unique topology acting as a refrigerant and adsorbent for cationic dye

“…Fig. 1 displays the ball and stick model of Scheme 1 Synthetic approaches of the heterometallic Cu(II) clusters [20][21][22] and {Cu 3 -Gd 2 } system with the ligand H 6 btp. {Cu 3 Gd 2 }.…”

“…The amino alcoholic ligands are found to be very useful for the construction of such polynuclear assemblies. [20][21][22][23] To that end, we have successfully synthesized a heterometallic 3d/4f cluster by employing an aminoalcohol ligand, 1,3-bis(tris(hydroxymethyl)methylamino)propane (H 6 btp), and Cu(CH 3 COO) 2 •H 2 O as well as Gd 2 O 3 in methanol and reported the detailed magnetic studies.…”

“…In the construction of such polynuclear ensembles, amino alcoholic ligands are extremely flexible and proven to be quite useful. 21,31,32 To that aim, we used an aminoalcohol ligand, H 6 btp, Cu(CH 3 COO) 2 •H 2 O, and Gd 2 O 3 in methanol to successfully construct and describe the extensive cooling and adsorption properties of the present heterometallic 3d/4f cluster.…”