Preparation and evaluation of superparamagnetic core–shell dummy molecularly imprinted polymer for recognition and extraction of organophosphorus pesticide

Ma, Wei; Yan, Xiangyang; Liu, Shaomin; Liu, Yuxin

doi:10.1007/s10853-017-1935-3

Cited by 41 publications

(13 citation statements)

References 47 publications

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“…One example of aggressive pesticides that affect the ecological environmental are organophosphorus pesticides, which have carcinogenic, teratogenic, and mutagenic repercussions on animals and humans. The improper application of organophosphorus pesticides in agriculture, which leads to high amounts of pesticides residues also recorded in fruits and vegetables, needs to be carefully controlled [ 161 , 162 , 163 ]. In this regard, researchers are making many attempts to manufacture new materials for monitoring the pollution with organophosphorus pesticides.…”

Section: Application Of Mesoporous Silica Nanoparticlesmentioning

confidence: 99%

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Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

et al. 2020

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In recent years, researchers focused their attention on mesoporous silica nanoparticles (MSNs) owing to the considerable advancements of the characterization methods, especially electron microscopy methods, which allowed for a clear visualization of the pore structure and the materials encapsulated within the pores, along with the X-ray diffraction (small angles) methods and specific surface area determination by Brunauer–Emmett–Teller (BET) technique. Mesoporous silica gained important consideration in biomedical applications thanks to its tunable pore size, high surface area, surface functionalization possibility, chemical stability, and pore nature. Specifically, the nature of the pores allows for the encapsulation and release of anti-cancer drugs into tumor tissues, which makes MSN ideal candidates as drug delivery carriers in cancer treatment. Moreover, the inner and outer surfaces of the MSN provide a platform for further functionalization approaches that could enhance the adsorption of the drug within the silica network and the selective targeting and controlled release to the desired site. Additionally, stimuli-responsive mesoporous silica systems are being used as mediators in cancer therapy, and through the release of the therapeutic agents hosted inside the pores under the action of specific triggering factors, it can selectively deliver them into tumor tissues. Another important application of the mesoporous silica nanomaterials is related to its ability to extract different hazardous species from aqueous media, some of these agents being antibiotics, pesticides, or anti-tumor agents. The purpose of this paper is to analyze the methods of MSN synthesis and related characteristics, the available surface functionalization strategies, and the most important applications of MSN in adsorption as well as release studies. Owing to the increasing antibiotic resistance, the need for developing materials for antibiotic removal from wastewaters is important and mesoporous materials already proved remarkable performances in environmental applications, including removal or even degradation of hazardous agents such as antibiotics and pesticides.

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Section: Application Of Mesoporous Silica Nanoparticlesmentioning

confidence: 99%

“…The most important aspect is to synthesize an effective and cost-efficient sorbent to trap these organophosphorus pesticides. However, it is necessary to establish the connection between the structure and the porous character of the sorbent [ 163 , 164 , 165 ].…”

Section: Application Of Mesoporous Silica Nanoparticlesmentioning

confidence: 99%

Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

et al. 2020

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“…25 Ten milligrams each of MMIP or MNIP was dispersed in a 2 mL centrifuge tube containing 1 mL of methanol solution with aminopyralid at 15 mg mL À1 and shaken for different times (0.5, 1, 1.5, 2, 4, 6, and 8 h). Similarly, for the static experiments, 10 mg of MMIP or MNIP was mixed with 1 mL of aminopyralid in methanol at various concentrations (5,10,15,20,30, 50, 100, and 150 mg mL À1 ). Aer shaking for 1 h, the samples were collected by a magnet.…”

Section: Measurement Of Kinetic Adsorption and Adsorption Isotherm Cumentioning

confidence: 99%

“…However, MNPs exhibit a strong aggregation tendency and are easily oxidized in air, so materials including silica, surfactants, octadecylsilane, and others have been used to modify MNPs to overcome these shortcomings. 15,16 Magnetic molecularly imprinted polymers (MMIPs) are prepared on the surface of a magnetic carrier using surface imprinting to distribute the imprinted sites on the surface of the MIP. 17,18 Magnetic dispersive solid-phase extraction (MDSPE) based on separation with a magnetic sorbent and an external magnetic eld can eliminate the need for a centrifugation step, shorten the separation time for the target molecules from solution, and reduce the loss of liquid and solid during the separation.…”

Section: Introductionmentioning

confidence: 99%

Magnetic molecularly imprinted polymers for the detection of aminopyralid in milk using dispersive solid-phase extraction

Tan

EI-Aty

et al. 2019

RSC Adv.

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“…Therefore, after the target molecule is recognized and adsorbed, the analyte can be separated from the mixture simply, quickly, and effectively by an external magnetic field, rather than by additional centrifugation, filtration, and other operations. Liu et al reported the preparation of core/shell dummy template magnetic MIPs using ethyl paraoxon as a template for the recognition and selective extraction of organophosphorus pesticide. Xu et al developed a novel biomimetic electrochemical sensor sensitized with Fe 3 O 4 @carboxyl‐functionalized multiwalled carbon nanotubes/chitosan nanocomposite layers using a molecularly imprinted film as a recognition element for the rapid detection of acephate and trichlorfon.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and evaluation of controllable core/shell magnetic molecular imprinted polymers based on konjac glucomannan for trichlorfon

Kang

Tian

2019

J of Applied Polymer Sci

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By combining the controllable core/shell strategy with graft copolymerization of polysaccharides, controllable core/shell magnetic molecularly imprinted polymers (MIPs) based on konjac glucomannan for selective recognition and enrichment of trichlorfon were fabricated and evaluated. By varying the dose of the polymeric precursors, the shell thickness of the core/shell structure could be regulated over a wide range. The magnetic nanoparticles encapsulated by polymers still had high magnetic performance and could be easily separated by an external magnetic field. The results of adsorption experiments showed that the MIPs could specifically recognize and adsorb trichlorfon with excellent selectivity, repeatability, and stability. The adsorption isotherm of MIPs could be fitted by the Langmuir equation. In addition, magnetic MIPs have been successfully applied to the detection of trichlorfon in real samples. Eco-friendly MIPs would be particularly suitable for the enrichment and separation of pesticide residues in food samples.

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Preparation and evaluation of superparamagnetic core–shell dummy molecularly imprinted polymer for recognition and extraction of organophosphorus pesticide

Cited by 41 publications

References 47 publications

Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

Mesoporous Silica Platforms with Potential Applications in Release and Adsorption of Active Agents

Magnetic molecularly imprinted polymers for the detection of aminopyralid in milk using dispersive solid-phase extraction

Fabrication and evaluation of controllable core/shell magnetic molecular imprinted polymers based on konjac glucomannan for trichlorfon

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