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Ionic liquids (ILs) are a class of liquid salts with characteristics such as a low melting point, an ionic nature, non-volatility, and tunable properties. Because of their adaptability, they have a significant influence in the field of fluorescence. This paper reviews the primary literature on the use of ILs in fluorescence sensing technologies. The kind of target material is utilized to classify the fluorescence sensors made with the use of ILs. They include using ILs as probes for metals, nitro explosives, small organic compounds, anions, and gases. The efficacy of an IL-based fluorescence sensor depends on the precise design to guarantee specificity, sensitivity, and a consistent reaction to the desired analyte. The precise method can differ depending on the chemical properties of the IL, the choice of fluorophore, and the interactions with the analyte. Overall, the viability of the aforementioned materials for chemical analysis is evaluated, and prospective possibilities for further development are identified. [Display omitted] • Ionic liquids as fluorescence sensors showcase versatility by detecting a broad spectrum of analytes, from metal ions to gases. • IL fluorescents offer high performance with easily modulated structures, and flexibility in sensing objectives. • It's important to develop new ILs, and uncover principles, for measuring analytes. [ABSTRACT FROM AUTHOR]

Heterogeneous Fenton processes can overcome the generation of iron sludge and the production of more solid wastes. However, the performance of the catalyst is far from satisfactory, especially when wastewater has a pH > 3. To overcome these problems, porous urchin-like 3D Co(II)Co(III) layered double hydroxides (LDHs) were synthesized via a facile solvothermal process. The effect of various factors on the morphologies and formation mechanism was systematically investigated. The porous urchin-like 3D Co(II)–Co(III) LDH (CCLH 120) displayed the best catalytic activity for heterogeneous Fenton degradation by using 60 μL H2O2 and 0.1 g L−1 catalyst over a wide range of pH. The high surface area, porosity and good dispersibility of the nanoparticles stimulated the rapid and massive generation of reactive oxygen species in the heterogeneous Fenton reaction. The degradation efficiency for different types of dyes was measured to be 97%, 95% and 77% for methylene blue, Rhodamine B and methyl orange, respectively. The degradation rate of RhB is found to be 5.41 × 10−5 mol g−1 s−1. When applied in the treatment process of mining wastewater, the chemical oxygen demand (COD) values can efficiently be reduced from 817 mg L−1 to 30 mg L−1, which clearly indicates that the material has good potential as a high performance catalyst in Fenton reactions for treating industrial effluents. [ABSTRACT FROM AUTHOR]

[Display omitted] Solar steam generation has great potential in alleviating freshwater crises, particularly in regions with accessible seawater and abundant insolation. Inexpensive, efficient, and eco-friendly photothermal materials are desired to fabricate sunlight-driven evaporation devices. Here, we have designed an economical strategy to fabricate a high-performance wood-based solar steam generation device. In current study, 3D-hierarchical Cu 3 SnS 4 has been loaded on wood substrates of variable sizes via an in-situ solvothermal method. Considering the water transportation capacity and thermal insulation property of wood, an enhanced light absorption was achieved by a uniform coating of Cu 3 SnS 4 on the inside and outside of the 3D porous structure of the wood. Thanks for the synergistic effect of Cu 3 SnS 4 and wood substrate, the obtained composite endorsed high-performance solar steam generation with a steam generation efficiency of 90% and an evaporation rate as high as 1.35 kg m-2h−1 under one sun. [ABSTRACT FROM AUTHOR]