Preparation by electrophoretic deposition of molybdenum iodide cluster-based functional nanostructured photoelectrodes for solar cells

Abstract

This work explores the potentiality of Mo 6 clusters as new inorganic sensitizers with amphoteric properties for photoelectronic applications being non-toxic and stable. It reports on the design of photoelectrodes by electrophoretic deposition (EPD) of molybdenum octahedral metal cluster iodide (CMI) onto mesoporous TiO 2 and NiO layers before being deposited on FTO (i. e. CMI@TSO@FTO, TSO = TiO 2 or NiO). Indeed, the low-cost, lowwaste and industrially scalable EPD method has allowed for the achievement of transparent,

Enhanced Photocatalytic Activity and Stability in Hydrogen Evolution of Mo6 Iodide Clusters Supported on Graphene Oxide

“…As molybdenum (and tungsten) is sufficiently cheap and abundant, their compounds constitute viable alternatives to costly noble metal-based luminophores, not to mention the environmentally hazardous lead-based hybrid perovskites and cadmium containing quantum dots [ 6 , 7 , 8 ]. Octahedral halide-bridged cluster compounds of Mo(II) and W(II), of the general type [M 6 X i 8 L a 6 ] (M = Mo, W; X i = Cl, Br, I (bridging or “inner”); L a = organic/inorganic ligand (terminal or “apical”, see Figure 1 ) show remarkable photoluminescence properties and emit red light in high quantum yields, which makes them particularly attractive in the design of functional hybrid nanomaterials [ 9 ] with potential applications in optoelectronic [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ], lighting [ 19 ], hydrogen storage [ 20 ], biomedicine [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ], catalysis [ 30 , 31 ], and photocatalysis [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Zn–Al Layered Double Hydroxide Film Functionalized by a Luminescent Octahedral Molybdenum Cluster: Ultraviolet–Visible Photoconductivity Response

“…37,38 The photochemical and electrochemical properties of the MC come from the metal-metal and metal-ligand bonding, resulting in a strong absorption in both the UV-Vis lights and a prominent luminescent emission within the deep red/near-infrared (NIR) regions. The remarkable optical properties of the Mo6 MC are their i) high quantum yield, ii) large Stoke shift that avoids re-absorption losses, iii) strong luminescence, iv) phosphorescence in the infrared range, and v) UV-Vis absorption combined with an excellent photostability due to its through the recent developments of the optical-related inorganic devices, such as photocatalytic water purification, 39 nanoparticles for bioimaging, 40 photoelectrodes for solar cells 41 and photonic crystals. 34 The flexible interactions between the metal cluster core, apical ligand, and counter ion in the nanocomposite have become a challenge to figure out the right explanation for the optical property modification.…”

Development of xanthan gum‐based solid polymer electrolytes with addition of expanded graphite nanosheets

“…Furthermore, nanostructured composites based on the combination of non-toxic polymers and carbonaceous materials are promising to obtain a better performance in energy systems in a safe, economically viable and industrial scale. [1][2][3][4][5][6] Recently, it is noticeable the growing interest in developing polymeric electrolytes containing nanostructured conductive materials with good electrochemical properties for energy production/ storage [7][8][9] and electrochromic materials. [10][11][12] In order to avoid the use of synthetic polymers, which are not biodegradable and are normally based on production processes incompatible with sustainability requirements, numerous researches are seeking for procedures concerning the production of solid polymeric electrolytes (SPEs) using biopolymeric materials as matrix.…”

“…Accordingly, the development of nanocomposites is interesting alternatives to be used in different applications for energy storage/production. Furthermore, nanostructured composites based on the combination of non‐toxic polymers and carbonaceous materials are promising to obtain a better performance in energy systems in a safe, economically viable and industrial scale 1–6 . Recently, it is noticeable the growing interest in developing polymeric electrolytes containing nanostructured conductive materials with good electrochemical properties for energy production/storage 7–9 and electrochromic materials 10–12 …”