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

Abstract

A c c e p t e d M a n u s c r i p t the industry. During the last few decades, the use of various wide band-gap semiconducting inorganic materials, such as ZnO, MoS2, ZnS, SiC for the light energy converters, has been mainly reported due to their simple structure and high photoconductive gain. [1][2][3][4] The visible (Vis) sensing photodetector using solar light energy became an interesting study for sustainable energy development goals. 5, However, the development of broadband photodetectors, having an efficient photoactivity in the UV-Vis light range, low cost, and environmentally friendly material and process, is facing many challenges for researchers. The layered double hydroxide (LDH), one of the promising inorganic matrices for the nanocomposite, was expressed by the formulation of [M 2+ 1-xM 3+ x(OH)2] x+ (A n-)x/n•mH2O (M II = Zn, Ni, Co, Mn, etc.; M III = Al, Fe, etc.; A = NO3 -, CO3 2-, SO4 2-, PO4 3-, etc.) with x as the molar ratio M 2+ /(M 2+ + M 3+ ) in the range of 0.2-0.33 and A nas an n-valent anion. LDH is well known as a multifunctional material with easily scalable fabrication and flexible application for a catalyst, 7 water treatment, 8 and drug support. 9 The tunability of the trivalent atom metal in an edge-sharing M(OH)6 octahedral network and internal anion exchangeability increase the chance to fabricate a wide variety of different LDH-based materials in a large amount. This is mostly due to the distinction of tunable host layers and functional interlayer guest molecules. 10 Currently, several studies been comprehensively focused on adsorbability improvement, 11,

Enhanced NH3 Sensing Performance of Mo Cluster-MoS2 Nanocomposite Thin Films via the Sulfurization of Mo6 Cluster Iodides Precursor

“…Ligated Mo 6 -cluster-containing compounds used for sensing activity are currently limited to oxygen sensor [ 67 , 68 ], pH sensing [ 69 ], biological sensing [ 70 ], and photo-response [ 58 , 71 ]. According to theoretical calculations, such compounds are predicted to have a good selectivity for NH 3 in the NRR [ 29 ].…”

“…According to theoretical calculations, such compounds are predicted to have a good selectivity for NH 3 in the NRR [ 29 ]. Previous studies have also demonstrated that they exhibit a photo-response and can react with NH 3 to form Mo x N y species at 400 °C [ 46 , 58 , 71 ]. Thus, we inferred that Mo 6 cluster iodides should have a specific adsorption of NH 3 even at room temperature and that this adsorption could cause a potential change when a voltage is applied to the MI@FTO, which was proved to be an ambipolar material ( E g = 1.9 eV).…”

Freestanding Binder-Free Electrodes with Nanodisk-Needle-like MnCuCo-LTH and Mn1Fe2S2 Porous Microthorns for High-Performance Quasi-Solid-State Supercapacitors

“…The ever-increasing energy demand has posed a serious threat to existing resources, especially fossil fuels. An urgent need has emerged for the development of novel materials with multifunctional characteristics. − In this row, layered double hydroxides (LDHs), composed of multimetal clay materials, have emerged as potential candidates created by brucite layers involving metal cations surrounded by hydroxyl anions octahedrally to stabilize M 2+ (OH) 6 /M 3+ / 4+ (OH) 6 octahedra. , Multivalent cations in the structure make them ultraefficient in redox reactions, which indeed prove their suitability as electrode materials for energy-related applications. − Alongside, facile stabilization, at lower temperatures, with intriguing hierarchical and freestanding morphologies on conductive substrates makes them even more interesting. − Their capability to hold multiple cations in the single structure improves the charge transfer kinetics. Moreover, the easy tunability of cationic cores by doping/de-doping of multiple similarly sized/charged cations in the host layers and exchangeability of anions without altering the structure bestows them with excellent electrochemical properties. , …”

Tuning the Behavior of a Hydrotalcite-Supported Sulfonated Bithiophene from Aggregation-Caused Quenching to Efficient Monomer Luminescence

“…Layered double hydroxides (LDHs) are a class of inorganic layered materials that have received great attention due mainly to their anion exchange properties, which make them promising in such diverse fields as catalysis, corrosion inhibition, environmental remediation, UV–vis photodetection, and drug delivery. , These hydrotalcite-type materials have the general formula [M 1– x 2+ M x 3+ (OH) 2 ] x + ( A m – ) x / m · n H 2 O, where M 2+ and M 3+ are divalent and trivalent cations, respectively, and A m – is an interlayer anion with charge − m . The structure is derived from that of brucite [Mg­(OH) 2 ] by isomorphous replacement of some of the divalent cations by trivalent ones to give positively charged layers that require the presence of charge-balancing interlayer anions .…”