Green-engineered synthesis of Bi2Zr2O7 NPs: excellent performance on electrochemical sensor and sunlight-driven photocatalytic studies

Kurlla, Pompapathi; Shivram, Anantharaju Kurupalya; Kottam, Nagaraju; Siddegowda, Surendra Boppanahalli; Subramaniam, Meena; Bogegowda, Uma; Malini, S.; Chowdhury, Arpita Paul; Narasimhan, Renuka Lakshmi

doi:10.1007/s11356-022-24760-5

Cited by 8 publications

(2 citation statements)

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“…The precipitation polymerization method [ 19 ] was used to synthesize magnetic MIPs (Fe 3 O 4 @MIPs). A reaction mixture containing 0.2 mmol SY dye and 0.8 mmol methylene succinic acid in 30 mL ethanol was agitated to initiate the monomer-template reaction.…”

Section: Methodsmentioning

confidence: 99%

“…The application of MIPs (Fe 3 O 4 @MIPs) onto the electrodes (electrochemical sensors) enhances their selectivity/specificity and makes them worthy of multiple applications [ 17 ]. The polymeric materials are non-conductive in nature, hence they are mixed with a conductive material, such as graphite to synthesize the MMIPs-based sensors [ 18 , 19 ]. Currently, a novel “core@shell-molecularly-imprinted-magnetic polymers-based sensors” (Fe 3 O 4 @MIPs) will be synthesized for the precise detection of SY dye in environmental samples.…”

Section: Introductionmentioning

confidence: 99%

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Biomimetic Electrochemical Sensors Based on Core-Shell Imprinted Polymers for Targeted Sunset Yellow Estimation in Environmental Samples

Malik

Khan

et al. 2023

Biosensors

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Magnetic molecularly imprinted polymers (MMIPs) contain the predesigned specialized recognition capability that can be chosen to build credible functional materials, that are easy to handle and have a good degree of specificity. Hence, the given piece of work is intended to design a novel electrochemical sensor incorporating magnetite-based molecularly imprinted polymers. The building materials consisted of a cross-linker (EGDMA), reaction-initiator (AIBN), monomer (methylene succinic acid-MSA), and template molecule (Sunset Yellow-SY dye). MMIPs exhibited a diameter of 57 nm with an irregular shape due to the presence of cavities based on SEM analysis. XRD patterns exhibited crystallinity, as well as amorphous peaks that are attributed to polymeric and non-polymeric frameworks of MMIPs. The crystallite size of the MMIPs from XRD analysis was found to be 16.28 nm based on the Debye-Scherrer’s equation. Meanwhile, the FTIR bands showed the synthesis of MMIPs using monomer and methylene succinic acid. The sorption data at the optimized operating conditions (pH 2, sorbent dosage 3 mg, time 18 min) showed the highest sorption capacity of 40 mg/g. The obtained data best fitted to the Langmuir sorption isotherm and followed the pseudo-second-order kinetics. The magneto-sensors were applied for ultrasensitive, rapid, and simple sensing of SY dye. The electrochemical experiments were run at the operating condition range of (scan rate 10–50 mV/s, tads 0–120 s, pH 5–9, potential range 1–1.5 V for CV and 1–1.3 V for SWAdASV). The linear range of detection was set to 1.51 × 10−6 M to 1.51 × 10−6 M posing LOD and LOQ values of 8.6242 × 10−5 M and 0.0002874 M, respectively. The regression analysis value for the calibration was found to be 0.950. Additionally, high adsorption efficiency, selectivity, reusability, and strong structural stability of the magneto-sensors showed potential use for SY detection in real samples. These characteristics make MMIPs a viable electrochemical substrate for the detection of chemical contaminants in the environment and in health-related products.

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Section: Methodsmentioning

confidence: 99%