Synthesis of novel hexamolybdenum cluster-functionalized copper hydroxide nanocomposites and its catalytic activity for organic molecule degradation

Abstract

Uchikoshi (2021): Synthesis of novel hexamolybdenum cluster-functionalized copper hydroxide nanocomposites and its catalytic activity for organic molecule degradation, Science and Technology of Advanced Materials,

A review on functional nanoarchitectonics nanocomposites based on octahedral metal atom clusters (Nb 6 , Mo 6 , Ta 6 , W 6 , Re 6 ): inorganic 0D and 2D powders and films

“…During the last decade, there was a growing interest of the synthesis of heterostructured nanocomposites using layered hydroxides (monolayer = LHSs, double layer = LDHs) because of their unique two-dimensional (2D) lamellar structural features and properties for heterogeneous (photo)catalysis, water treatment, agriculture and biotechnology applications for instance. [238][239][240][241][242] Regarding the layered hydroxide nanocomposites functionalized with octahedral metal atom clusters, there are only few examples, two were reported by Christiano et al in the eighties [69,70] and the two others very recently by Ngyuen et al [117,217] The first two examples were focused on the intercalation in Na + -Montmorillonite of {M 6 X 12 } n+ (M = Nb, Ta; n = 2-4) and {Mo 6 Cl 8 } 4+ cluster cores by ion exchange process. The nanoclusters have been converted to metal oxide pillared forms with potential utility for oxidation catalysis.…”

“…[117] for the start Very recently, a simplest one-pot synthesis was proposed by Nguyen et al to prepare copper LHSs nanocomposites (noted Mo 6 @CHN) mixed with A 2 [{Mo 6 X i 8 }X a 6 ] nanocluster compounds (A = Cs, Bu 4 N; X = Cl, Br and I), the last example. [217] In this process, monoclinic copper hydroxynitrate (CHN), was fabricated in the presence of the nanoclusters by simply mixing an ethanolic solution of Cu(NO 3 ) 2 •3H 2 O and a solution of nanoclusters dispersed in acetone (Figure 10a), followed by thermal treatment at 80°C for 3h. The precipitate powder was collected by centrifugation and washing several times, then dried at 100°C.…”

“…They found applications in many important domains like energy, [91-108] catalysis, [94, [109][110][111][112][113][114][115][116][117][118][119]217] biotechnology, [47, sensors, [75,80,142,[146][147][148][149][150][151][152][153] and photonic (Figure 2). [89, [154][155][156][157][158][159][160][161][162][163][164][165][166][167][168][169][170][171] One of the objectives of this review would be to provide guiding significance for design of new high-performance nanocomposites based on transition metal atom clusters from the aspects of processing, characterization and applications.…”

Molecular heterometallic clusters [Re6−xMoxS8L6] (x = 2–3, L = py, etpy, tbp): negligible influence of the x value on the crystal structures

“…Octahedral cluster complexes with the general formula [{M 6 Q 8 }L 6 ] n (M = Mo, W, Re; Q and L denote inner and apical ligands, respectively) exhibit a wide range of useful physical properties, including photoinduced and X-ray induced phosphorescence in the red and NIR regions, 1–8 radiopacity 9 and catalytic activity. 10,11 Establishing correlations between the composition and properties, as well as the possibility of a directed change in the properties of cluster materials by changing their composition, is of particular importance. While apical and, in some cases, inner ligands can be replaced in relatively mild conditions, the {M 6 } metal centers are obtained by the high-temperature synthesis and are not subject to further chemical modification.…”