| Material, energy and information are the three pillars of social development. Innovation and development of material is the premise and the safeguard of energy and information technology development. Therefore, the synthesis of materials has been the research hotspot and the frontier in the field of material science. Ionic liquid with special functions has attracted much attention in the nearly twenty years. A variety of inorganic nanomaterials have also been synthesized in ionic liquid. The synthesis of inorganic materials in ionic liquid is not only the discovery of new application of ionic liquids but also the birth of the new synthetic materials method. In this paper, it is focused on the synthesis of transition metal oxide nanomaterials in metal ion-containing ionic liquids system. The as-prepared samples are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), FT-IR spectrum, and diffuse reflectance spectroscopy (DRS). The effect of concentration of ionic liquids on the morphology of nanomaterials has been investigated in detail. In addition, the photoelectrochemical properties of transition metal oxide nanomaterials are investigated.In this paper, Cu polyhedron-pattern nanostructures have been successfully synthesized in the presence of the ionic liquid (IL) 1-hexadecyl-3-methylimidazolium bromide ([C16mim]Br) under solvothermal conditions. During the reaction process, the ionic liquid plays an important role in controlling the morphology and size of the Cu polyhedron-pattern nanostructures. It is found that there is the ionic liquid [C16mim]Br on the surface of the Cu polyhedron-pattern nanostructures. Cu polyhedron-pattern nanostructures exhibit better thermal stability in air than Cu samples synthesized without ionic liquid at room temperature. In addition, the electrocatalytic activity of the Cu-modified electrodes towards glucose oxidation is investigated by cyclic voltammetry. The results clearly demonstrate that the unique morphology and small size of the Cu polyhedron-pattern nanostructures make them suitable for application as non-enzymatic glucose sensors. Thus, electrodes modified with Cu polyhedron-pattern nanostructures are promising for the future development of non-enzymatic glucose sensors.CuO nanorods have been successfully prepared in the presence of a metal ion containing ionic liquid bis(1-hexadecyl-3-methylimidazolium) tetrachlorocuprate ([C16mim]CuCl4) under solvothermal conditions. The nanorods synthesized from metal ion containing ionic liquids show good crystallinity, well-defined morphologies, small sizes and large BET surface areas. The effect of changing the alkyl chain length of the ionic liquid’s cation on the morphology of CuO has been investigated. It is found that the ionic liquid actes not only as a Cu source but also as a solvent and template for the fabrication of CuO nanorods. In addition, the photoelectrochemical properties are tested by means of the transient photocurrent response of electrodes modified with as-prepared CuO. The photocurrent response of CuO nanorods/indium tin oxide electrode is high and stable, and it shows great promise as a photoelectrochemical glucose sensor with high sensitivity and fast response, which are beneficial to practical applications of nanosensors.A liquid/liquid interfacial reaction system is designed to fabricate a-Fe2O3cubes. The reaction system uses a hydrophobic ionic liquid containing iron ions ([(CgH17CH3)2N]FeCl4) for manufacturing a-Fe2O3cubes by hydrothermal method under low-temperature conditions. The iron-containing ionic liquid is hydrophobic and can form a liquid/liquid interface with water, which is vital for fabrication of the α-Fe2O3cubes. Nanomaterials synthesized from hydrophobic iron-containing ionic liquids show good crystallinity, well-developed morphology, and uniform size. The effect of different ionic liquids on the morphology of a-Fe2O3was investigated in detail.[(C8H17)2(CH3)2N]FeCl4is assumed to perform the triple role of forming a liquid/liquid interface with water and acting as reactant and template at the same time. Their photoelectrochemical properties are tested by means of the transient photocurrent response of electrodes modified with as-prepared α-Fe2O3. The photocurrent response of cubes/indium tin oxide electrode is high and stable, and it shows great promise as a photoelectrochemical glucose sensor with high sensitivity and fast response, which are beneficial to practical applications of nanosensors.a-Fe2O3hollow microspheres have been successfully prepared in the presence of metal ion-containing reactable ionic liquid l-octyl-3-methylimidazolium tetrachlorideferrate ([Omim]FeCl4) under the solvothermal condition. The as-prepared samples are characterized by a series of analysis methods. The effect of concentration of ionic liquids on the morphology of a-Fe2O3had been investigated in detail. It is found that [Omim]FeCl4actes not only as Fe source but also as solvent and template for the fabrication of a-Fe2O3hollow microspheres. In addition, the photoelectrochemical properties are tested by means of the transient photocurrent response of electrodes modified with as-prepared a-Fe2O3. The photocurrent response of a-Fe2O3hollow microspheres/indium tin oxide electrode is high and stable, and it shows great promise as a photoelectrochemical glucose sensor with high sensitivity and fast response, which are beneficial to practical applications of nanosensors.A route to fabricate the graphite-like C3N4hybridized α-Fe2O3(g-C3N4/α-Fe2O3) hollow microspheres is designed. This route develops an iron ion-containing ionic liquid{1-butyl-3-methylimidazolium tetrachlorideferrate ([Bmim]FeCl4)} system for manufacturing the hollow microspheres by a novel and ecofriendly solvothermal method at low temperature condition. The effect of ionic liquids on the morphology of the g-C3N4/α-Fe203hybrid composites has been investigated in detail. It is found that [Bmim]FeCl4is supposed to have the triple roles of reactant, dispersing media and template at the same time, and is vital for the structure of the g-C3N4/a-Fe2O3hollow microspheres. In addition, the photoelectrochemical properties are tested by means of the transient photocurrent response of electrodes modified with as-prepared g-C3N4/a-Fe2O3hybrid composites. The photocurrent response of g-C3N4/α-Fe22O3hollow microspheres/indium tin oxide electrode is high and stable, and it shows great promise as a photoelectrochemical glucose sensor with high sensitivity and fast response, which are beneficial to practical applications of nanosensors. |
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