Dataset Information

Ratio fluorescence detection of tetracycline by a Eu³⁺/NH₂-MIL-53(Al) composite.

ABSTRACT: Tetracycline detection has been a great concern because of its overuse and difficulty in degrading. Here, a detection method with ratio fluorescence was developed by synthesizing Eu³⁺ doped nanocomposites with NH₂-MIL-53(Al) nanosheets. After adding tetracycline, the fluorescence intensity at 616 nm characteristic emission peak of Eu³⁺ was sensitized by the antenna effect generated from coordinating Eu³⁺ with tetracycline, but the fluorescence of NH₂-MIL-53(Al) at 433 nm was quenched by the fluorescence resonance energy transfer between the Eu³⁺-tetracycline composition and NH₂-MIL-53(Al). Therefore, the efficient detection of tetracycline was achieved based on this change of ratio fluorescence signal. The experimental results show that Eu³⁺/NH₂-MIL-53(Al) has excellent selectivity, a wider linear range and a lower detection limit for detecting tetracycline. This method can afford favorable ideas for developing advanced chemical and biological sensors.

SUBMITTER: Chen J

PROVIDER: S-EPMC8693705 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Ratio fluorescence detection of tetracycline by a Eu3+/NH2-MIL-53(Al) composite.

Chen Jing J Xu Yali Y Li Shuying S Xu Fanghong F Zhang Qian Q

RSC advances 20210112 4

Tetracycline detection has been a great concern because of its overuse and difficulty in degrading. Here, a detection method with ratio fluorescence was developed by synthesizing Eu3+ doped nanocomposites with NH2-MIL-53(Al) nanosheets. After adding tetracycline, the fluorescence intensity at 616 nm characteristic emission peak of Eu3+ was sensitized by the antenna effect generated from coordinating Eu3+ with tetracycline, but the fluorescence of NH<su ...[more]

PMID: 35424184

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Project description:In this study, hybrids of nanoporous MIL-101(Cr) and MIL-53(Al) were synthesized using a hydrothermal method for various time periods, ranging from 8 to 40 h. The prepared materials were characterized by powder X-ray diffraction (PXRD) and elemental analysis, and their specific surface areas were measured by N2 sorption at 77 K using the Brunauer-Emmett-Teller (BET) method. To investigate the practical application of these materials, the pure carbon dioxide and methane adsorption capacities of the samples were determined using the volumetric method. The Langmuir model was used to fit the CO2 and CH4 isotherms. Extended Langmuir (EL) equations and the ideal adsorbed solution theory (IAST) models were used to obtain the CO2/CH4 selectivity. The sample with the highest BET specific surface area was selected as a candidate for further investigations. The thermal stability of the selected sample was investigated by thermogravimetric analysis (TGA). Scanning electron microscopy (SEM) was used to characterize the sample morphology. XRD results showed that the sample synthesized over the shortest time corresponded to MIL-101(Cr), while the sample synthesized over the longest time was in agreement with MIL-53(Al). Samples synthesized for time periods between these two limits were assumed to be composites of both MIL-53(Al) and MIL-101(Cr). TGA results indicated that the hybrid materials were thermally stable at temperatures about 100 °C higher than for pure MIL-101(Cr). The BET specific surface area (1746 m2 g-1) and CO2 adsorption capacity (16 mmol g-1) of the selected hybrid sample were about 50% and 35% higher, respectively, compared with those of pure MIL-53(Al), but 30% and 20% lower, respectively, compared with those of pure MIL-101(Cr). Binary adsorption modeling showed the high selectivity of the MIL-101(Cr) and MIL-53(Al) hybrid material for CO2 with a minimum separation factor of about 60 at 298 K. This value was much higher than those reported previously and those observed in this work for the original MIL-101(Cr) or MIL-53(Al). These results demonstrated that the hybrid of MIL-101(Cr) and MIL-53(Al) was a promising material for selective CO2 capture from natural and biogas.

Dataset Information

Ratio fluorescence detection of tetracycline by a Eu³⁺/NH₂-MIL-53(Al) composite.

Publications

Ratio fluorescence detection of tetracycline by a Eu<sup>3+</sup>/NH<sub>2</sub>-MIL-53(Al) composite.

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