One-dimensional growth of MoOx-based organic–inorganic hybrid nanowires with tunable photochromic properties

Abstract

The diverse structures of molybdate anions significantly provide new opportunities to design various nanostructures of MoO x -based organic-inorganic hybrids with prominent catalytic, electrochemical and photo/electrochromic properties. In this paper, the one-dimensional (1D) growth originating from anisotropic molybdate anions is successfully introduced to prepare a series of hybrid nanowires of Mo 3 O 10 (C 6 H 8 N) 2 $2H 2 O (anilinium trimolybdate), Mo 3 O 10 (C 2 H 10 N 2 ) (ethylenediamine trimolybdate) and Mo 3 O 10 (C 5 H 6 N) 2 $H 2 O (pyridium trimolybdate). Taking Mo 3 O 10 (C 6 H 8 N) 2 $2H 2 O for example, the 1D growth is proved to be associated with the chain-like structure of Mo 3 O 10 2À anions by both experiments and quantum chemical calculations. Meanwhile, the synthesis parameters, e.g., reacting time, pH conditions and feeding ratio, show obvious influences on product morphologies based on different molybdate anions, further validating the growth mechanism. More importantly, the asobtained MoO x /amine nanostructures remarkably exhibit tunable photochromic properties depending on their 1D structures and hybrid composites, which presents the potential to design well-tailored functional optical nanodevices.

Ionic liquid assisted hydrothermal synthesis of MoS2 double-shell polyhedral cages with enhanced catalytic hydrogenation activities

“…Recently, Gao and co-workers proposed that the anisotropic molybdate anions are the main reason for oriented growth of MoO x -based organic-inorganic hybrid nanostructures. 35 Thus the tetrahedral building blocks of PMA provide the possibility of synthesizing polyhedral MoS 2 materials. In our experiments, [EMIM] + cations of ILs are considered as structure-directing agents and adsorbed on some planes of Mo-O tetrahedrons, resulting in the formation of polyhedral PMA-ILs hybrid.…”

Optical Properties of Hybrid Organic‐Inorganic Materials and their Applications

“…[224] The most important result of the work is the good reversibility (as high as 98.4%, which is much higher than conventional WO 3 materials) and the good coloration response expanded to the visible-light region, which is a critical challenge for practical applications using solar energy and other visible laser sources. A second approach is to develop anisotropic organic-inorganic nano-hybrids, [225] in which the 1D organization of MoO x nanoclusters enhances the photochromic sensitivity, and tunable components endow them with tailored performance.…”

Synthesis of Mo-based nanostructures from organic-inorganic hybrid with enhanced electrochemical for water splitting

“…First, Mo 3 O 10 (C 2 H 10 N 2 ) nanowires were prepared by one-pot wet chemistry method reported in the literature [41]. The structure and morphology of the product were characterized by XRD and SEM (Supplementary information, Fig.…”

“…The MoO x -based organic-inorganic hybrid nanowires were synthesized using a wet chemistry method described previously [41]. For the synthesis of Mo 3 O 10 (C 2 H 10 N 2 ) nanowires, 1.24 g of ammonium heptamolybdate was dissolved in 15 mL of water, and then 0.8 g of ethylenediamine was added dropwise, with magnetic stirring at room temperature.…”