Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection

Beilstein Journal of Nanotechnology, Journal Year: 2024, Volume and Issue: 15, P. 1522 - 1535

Published: Nov. 28, 2024

A novel electrochemical sensor for the detection of enrofloxacin (ENR) in aqueous solutions has been developed using a carbon paste electrode modified with mixture metal-organic frameworks (MOFs) CuBTC and FeBTC. These MOFs were successfully synthesized via solvothermal method characterized various techniques, including X-ray diffraction, Fourier-transform infrared spectroscopy, Brunauer–Emmett–Teller analysis, photoelectron spectroscopy. The MOF exhibited particle size ranging from 40 to 100 nm, high surface area 1147 m 2 /g, pore volume 0.544 cm 3 capillary diameter 1.50 nm. Additionally, energy-dispersive mapping demonstrated uniform distribution two within composition. synergistic effect electrocatalytic properties conductivity FeBTC significantly enhanced response ENR, increasing signal by more than ten times compared unmodified electrode. Under optimal analytical conditions, three dynamic ranges ENR detection, that is, 0.005 0.100 µM, 0.1 1.0 1 13 coefficients determination 0.9990, 0.9954, 0.9992, respectively, depending on accumulation duration. achieved low limit nM good reproducibility, relative standard deviation 3.83%. Furthermore, effective performance analysing tap lake water samples, recovery rates 90.2% 121.3%.

Language: Английский

Research Progresses of Metal-organic Framework HKUST-1-Based Membranes in Gas Separations^※

Acta Chimica Sinica, Journal Year: 2022, Volume and Issue: 80(3), P. 340 - 340

Published: Jan. 1, 2022

The development of high-efficiency, green and energy-saving material separation purification technology is great significance, gas has a wide range applications in the fields industry, energy, medical treatment technology.Since traditional polymer membranes still face many challenges achieving high-efficient separation, new membrane materials become current hotspot difficult issue.As an emerging porous coordination polymer, metal-organic frameworks (MOFs) have attracted attention due to their unique, designable topological structures tunable functionalities.In order overcome problem that bulk or powder MOFs are be used for efficiently, it significance challenging task develop separation.As representative MOF material, HKUST-1 widely prepare its advantages high stability, economic raw hierarchical pore structure.The preparation methods performances past ten years summarized, some viewpoints research prospect on this area described.

Language: Английский

Synergistic Effect of Fe and Zn Doping on Multimetallic Catalysts for the Catalytic Hydrogenation of Furfural to Furfuryl Alcohol

ChemistrySelect, Journal Year: 2023, Volume and Issue: 8(5)

Published: Feb. 1, 2023

Abstract FeCoZn@NPC‐600 catalyst was prepared by one‐step pyrolysis using FeCoZn‐ZIF as the precursor through multi‐metal homogeneous doping and self‐template conversion strategy, it used to catalyze selective hydrogenation of furfural (FF) furfuryl alcohol (FOL). The results showed that FF reached 100 % FOL selectivity 97.34 %. Compared with FeCo@NPC‐600 CoZn@NPC‐600, yield increased 11.2 2.2 times, respectively. excellent catalytic performance is mainly attributed synergistic effect multiple metals in catalyst. Fe Zn enhanced active Co(0) content acid strength FeCoZn@NPC‐600, which promoted activation H 2 FF. Meanwhile, also optimizes pore structure activity did not significantly decrease after repeated use for five because encapsulation graphite carbon layer led good cycleability.

Language: Английский