Molecularly Imprinted Polymer (MIP) for thiamethoxam: A theoretical and experimental study

Silva, Camilla Fonseca; Menezes, Leonardo F.; Pereira, Arnaldo César; Nascimento, Clébio S.

doi:10.1016/j.molstruc.2021.129980

Cited by 34 publications

(11 citation statements)

References 40 publications

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“…It was observed that characteristic bands of TMX were present in AC-NP after sorption, such as the typical absorption band located between 1500 and 1600 cm −1 attributed to NO 2 groups (Silva et al 2021 ). The effect of the matrix (sugarcane juice) was not significant in the vibrational bands, indicating that this material can also be used in complex matrices with no substantial changes in its sorption sites.…”

Section: Resultsmentioning

confidence: 99%

Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon

Freitas

Barbosa

Labuto

et al. 2022

Environ Sci Pollut Res

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The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatography coupled to a diode array detector (HPLC–DAD). The AC-NP was efficiently synthesized using a co-precipitation method and the impregnation of magnetite (NP) in the activated carbon (AC) was assessed by the crystalline planes found in the AC-NP structure shown in the XRD diffractograms. The AC-NP FTIR analysis also indicated predominant bands of Fe–O stretching of the magnetite at 610–570 cm −1 . Functional groups in AC and AC-NP were identified by absorption bands at 3550 and 1603 cm −1 , characteristic of O–H and C = C, respectively. The TMX adsorption kinetics in sugarcane juice was the pseudo-second-order type with r 2 = 0.9999, indicating a chemical adsorption process. The experimental sorption capacity ( SC exp ) for both TMX (standard) and TMX-I (insecticide) by AC-NP were 13.44 and 42.44 mg/g, respectively. Seven non-linear isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Toth, Hill, Sips, and Redlich-Peterson) were fitted to the experimental adsorption data of TMX and TMX-I by AC-NP. Considering the standard error (SE), Freundlich, Langmuir, and Sips were the most appropriate models to describe the TMX adsorption, and Hill’s best adjusted to TMX-I experimental data. The chromatographic method was highly satisfactory due to its high selectivity and recovery (91–103%). The efficiency of AC-NP in the sorption of TMX was confirmed by the excellent values of SC exp and sorption kinetics.

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Section: Resultsmentioning

confidence: 99%

Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon

Freitas

Barbosa

Labuto

et al. 2022

Environ Sci Pollut Res

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“…This suggested that PILEGA could form a more stable complex with BPA. 27 Thus, PILEGA can be used as a functional monomer, i.e. , its oligomer (PICO) can be used as the functional monomer oligomer in this study.…”

Section: Resultsmentioning

confidence: 99%

4-Pentenoyl-isoleucyl-chitosan oligosaccharide and acrylamide functional monomer-dependent hybrid bilayer molecularly imprinted membrane for sensitive electrochemical sensing of bisphenol A

et al. 2021

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“…For the rational design of MIPs, quantum chemical calculations were performed to estimate the conjugation between template molecules and functional monomers by measuring the electronic stabilisation energy of template-monomer complexes. 29 For the computer simulation, neutral amino acids were selected to construct the 4-pentenoyl-aminoacyl-glucosamine (PAAGA) functional monomer. The structures of SDI and PAACO/LAACO were optimised in the gas phase at the HF/6-31G(d) level, and the optimised geometry structures were verified without any imaginary frequency.…”

Section: Methodsmentioning

confidence: 99%

Bifunctional monomer oligomers-based composite molecularly imprinted membranes for the electrochemical monitoring of Sudan I

Gao

Zang

Xie

et al. 2022

Analyst

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Molecularly Imprinted Polymer (MIP) for thiamethoxam: A theoretical and experimental study

Cited by 34 publications

References 40 publications

Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon

Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon

4-Pentenoyl-isoleucyl-chitosan oligosaccharide and acrylamide functional monomer-dependent hybrid bilayer molecularly imprinted membrane for sensitive electrochemical sensing of bisphenol A

Bifunctional monomer oligomers-based composite molecularly imprinted membranes for the electrochemical monitoring of Sudan I

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