Mechanochemical synthesis of covalent organic framework for the efficient extraction of benzoylurea insecticides

Wang, Xiaolan; Ma, Ruiyang; Hao, Lin; Wu, Qiuhua; Wang, Chun; Wang, Zhi

doi:10.1016/j.chroma.2018.03.053

Cited by 115 publications

(32 citation statements)

References 44 publications

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“…The COF (TpPa‐1) @Fe 3 O 4 surface has a rich benzene ring and pore structure, which was conducive to strong π‐π stacking effect and hydrophobic interaction with the FQs benzene ring [27], and the FQs were bound to the surface of the adsorbent. COF (TpPa‐1) @Fe 3 O 4 has a large specific surface area and can provide a large number of adsorption sites for FQs antibiotics.…”

Section: Resultsmentioning

confidence: 99%

Use of a magnetic covalent organic framework material with a large specific surface area as an effective adsorbent for the extraction and determination of six fluoroquinolone antibiotics by HPLC in milk sample

Guan

Liu

et al. 2020

J of Separation Science

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A magnetic covalent organic framework material was synthesized with a coreshell structure using a simple solvothermal method. It was prepared with Fe 3 O 4 as the magnetic core, covalent organic framework as the shell, which synthesized from 1,3,5-triformylphloroglucinol and p-phenylenediamine by Schiff base reaction. Transmission electron microscopy, Fourier transform infrared spectroscopy, powder X-ray diffraction, vibrating sample magnetometry, and nitrogen adsorption-desorption were used to characterize magnetic adsorbent. It has showed a large specific surface area (505.6 m 2 /g), which can provide many adsorption sites. Moreover, the saturation magnetization value was 48.4 emu/g enough to be separated by external magnet. Six kinds of fluoroquinolones (enoxacin, fleroxacin, ofloxacin, norfloxacin, pefloxacin, and lomefloxacin) were extracted by magnetic solid phase extraction with the magnetic adsorbent. Highperformance liquid chromatography detects the entire adsorption and desorption process to further evaluate the optimal extraction and desorption conditions. Under the optimal chromatographic conditions, this method showed a low detection limit (0.05 to 0.20 μg/L), good linearity in the range of 0.5 to 200 μg/L, and the enrichment factor reaches 115.5-127.3. The spiked recovery of the fluoroquinolones in milk sample ranged from 90.4 to 101.2%.

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Section: Resultsmentioning

confidence: 99%

Use of a magnetic covalent organic framework material with a large specific surface area as an effective adsorbent for the extraction and determination of six fluoroquinolone antibiotics by HPLC in milk sample

Guan

Liu

et al. 2020

J of Separation Science

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“…The mechanochemical synthesis of COFs is still at a vigorously developing stage. The advantage of space-time yield overwhelms the lack of relatively high crystallinity, and the resulting COFs have been applied in the elds of separation, 141 detection, 142 and electrochemistry. 143,144…”

Section: Mechanochemical Synthesismentioning

confidence: 99%

Nanoscale covalent organic frameworks as theranostic platforms for oncotherapy: synthesis, functionalization, and applications

et al. 2020

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“…HL‐COP was used as an on‐line SPE adsorbent, combined with HPLC‐UV detection for preconcentration of Sudan dyes from chili powder and sausage samples, with LODs of 0.03–0.15 µg L −1 and enrichment factors of 305–757. Notably, our group synthesized COF‐TpAzo ( S BET = 636 m 2 g −1 ) through an eco‐friendly mechanochemical method, based on the Schiff base aldehyde‐amine condensation of Tp and 4,4′‐azodianiline (Azo). TpAzo was used as the SPE adsorbent for the extraction of benzoylurea insecticides from juice, tomato, and white radish samples with good extraction capabilities.…”

Section: Pofs As Advanced Materials In Analytical Chemistrymentioning

confidence: 99%

“…The above on‐line SPE systems efficiently reduced the tedious procedural steps, saved analysis time, minimized the exposure to hazardous solvents, and improved sample throughput and reproducibility . However, only a limited number of POFs could be directly employed for on‐line SPE systems, as their irregular shapes and nanometer particle diameters might cause high SPE‐column backpressure,[84a] which restricts the further utilization of POFs for on‐line SPE system. D‐µ‐SPE is an alternative SPE approach to avoid the above problems of on‐line SPE.…”

Section: Pofs As Advanced Materials In Analytical Chemistrymentioning

confidence: 99%

Porous Organic Frameworks: Advanced Materials in Analytical Chemistry

et al. 2018

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Porous organic frameworks (POFs), a general term for covalent‐organic frameworks (COFs), covalent triazine frameworks (CTFs), porous aromatic frameworks (PAFs), etc., are constructed from organic building monomers with strong covalent bonds and have generated great interest among researchers. The remarkable features, such as large surface areas, permanent porosity, high thermal and chemical stability, and convenient functionalization, promote the great potential of POFs in diverse applications. A critical overview of the important development in the design and synthesis of COFs, CTFs, and PAFs is provided and their state‐of‐the‐art applications in analytical chemistry are discussed. POFs and their functional composites have been explored as advanced materials in “turn‐off” or “turn‐on” fluorescence detection and novel stationary phases for chromatographic separation, as well as a promising adsorbent for sample preparation methods. In addition, the prospects for the synthesis and utilization of POFs in analytical chemistry are also presented. These prospects can offer an outlook and reference for further study of the applications of POFs.

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Mechanochemical synthesis of covalent organic framework for the efficient extraction of benzoylurea insecticides

Cited by 115 publications

References 44 publications

Use of a magnetic covalent organic framework material with a large specific surface area as an effective adsorbent for the extraction and determination of six fluoroquinolone antibiotics by HPLC in milk sample

Use of a magnetic covalent organic framework material with a large specific surface area as an effective adsorbent for the extraction and determination of six fluoroquinolone antibiotics by HPLC in milk sample

Nanoscale covalent organic frameworks as theranostic platforms for oncotherapy: synthesis, functionalization, and applications

Porous Organic Frameworks: Advanced Materials in Analytical Chemistry

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