Bi, Fe, and Ti ternary co-doped ZrO2 nanocomposites as a mass spectrometry matrix for the determination of bisphenol A and tetrabromobisphenol A in tea

Zhen, Deshuai; Shi, Sisi; Gao, Chan; Kang, Qing; Xiao, Xilin; Grimes, Craig A.; Cai, Qingyun

doi:10.1007/s00604-020-04544-9

Cited by 8 publications

(3 citation statements)

References 39 publications

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“…Nano-ZrO 2 is characterized by a large speci c surface area, controllable pore size, and easy functionalization. Therefore, nano-ZrO 2 is widely used in the application of electrochemical sensors [20][21][22][23][24] . Metallic nano-ZnO has the advantages of low price, easy preparation, large speci c surface area [25] , wide energy band gap [26] , low toxicity, high stability [27] , good biocompatibility and high catalytic activity [28][29] , which is an excellent modi ed electrode material.…”

Section: Introductionmentioning

confidence: 99%

Preparation of zirconia/zinc oxide nanocomposites by sol-gel method for highly sensitive determination of dopamine

Chen,

Tian,

Zhang

et al. 2024

J Sol-Gel Sci Technol

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A novel electrochemical sensor based on ZrO 2 and ZnO hybrid nanocomposites was constructed for the speci c determination of dopamine (DA) with ultra-high sensitivity and selectivity. The structure and electrochemical properties of the composites were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), automatic gas adsorption apparatus and electrochemistry. The results show that in the ZrO 2 /ZnO nanocomposite, ZrO 2 has a large speci c surface area and abundant active site, which can accelerate the oxidation reduction reaction of DA, while ZnO nanomaterials have good conductivity, which can improve the adsorption ability of the sensor to DA. The detection limit of the electrochemical sensor is 94.1 nM in the linear range of 0.5~100 μM. Assays were performed using human serum samples at physiological pH, the recovery rate was 98.5%~101.0%, and the relevant standard deviations were less than 5%. This indicates that the electrochemical sensor is promising for bioanalysis and disease monitoring.

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Section: Introductionmentioning

confidence: 99%

Preparation of zirconia/zinc oxide nanocomposites by sol-gel method for highly sensitive determination of dopamine

Chen,

Tian,

Zhang

et al. 2024

J Sol-Gel Sci Technol

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“…Cyanine derivatives can also be incorporated onto a solid-supported matrix [24,25], providing practicality for their application not only in laboratory environments but also in in situ applications. These types of devices can be particularly useful for environmental purposes, allowing for the detection of specific pollutants, and their possible capture in a combined approach.…”

Section: Introductionmentioning

confidence: 99%

Development of Cyanine 813@Imidazole-Based Doped Supported Devices for Divalent Metal Ions Detection

et al. 2022

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A NIR cyanine@imidazole derivative Cy1 was synthesized and evaluated as a metal ion sensor in solution. Cy1 was shown to be very sensitive to all metal ions tested, presenting a blue shift in the absorption from 668 nm to 633 nm, followed by a change in colour from pale green to blue with Zn2+, Cd2+, Co2+, Ni2+ and Hg2+ ions. Despite the blue shift in the absorption, a decrease at 633 nm (with a colour change from pale green to colourless), as well as a quenching in the emission intensity at 785 nm were observed for Cu2+ ions. The results show the formation of sandwich complexes of two ligands per metal ion with the highest association constant observed for Cu2+ (Log Kass.abs = 14.76 ± 0.09; Log Kass.emis. = 14.79 ± 0.06). The minimal detectable amounts were found to be 31 nM and 37 nM, with a naked eye detection of 2.9 ppm and 2.1 ppm for Hg2+ and Cu2+ ions, respectively. These results prompted us to explore the applicability of Cy1 by its combination with nanomaterials. Thus, Cy1@ doped MNs and Cy1@ doped PMMA nanoparticles were synthesized. Both nanosystems were shown to be very sensitive to Cu2+ ions in water, allowing a naked-eye detection of at least 1 ppm for Cy1@ doped MNs and 7 ppm for Cy1@ doped PMMA. This colourimetric response is an easy and inexpensive way to assess the presence of metals in aqueous media with no need for further instrumentation.

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“…Contemporarily, the photocatalytic sterilization created by utilizing some reactive species produced under ultraviolet or visible light illumination has become increasingly valuable [2,[4][5][6]. In short, photocatalytic nanocomposites harvest optical energy to produce positive and negative charge carriers that are involved in photoredox reactions [7][8][9]. It has been reported that TiO 2 is one of the most representative and dominant photocatalysts on account of its non-toxicity and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Using Gd-Enhanced β-NaYF4:Yb,Er Fluorescent Nanorods Coupled to Reduced TiO2 for the NIR-Triggered Photocatalytic Inactivation of Escherichia coli

Zhou

2021

Catalysts

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β-NaYF4:Yb,Er,Gd fluorescent nanorods were successfully coupled to a reduced TiO2 (UCNPs@R-TiO2) nanocomposite and applied to visible-light catalytic sterilization under 980 nm near-infrared (NIR) light illumination. The UCNPs (β-NaYF4:Yb,Er,Gd) absorb the NIR light and emit red and green light. The visible light can be absorbed by the R-TiO2 (Eg = 2.8 eV) for the photocatalytic reaction. About 98.1% of Escherichia coli were effectively killed upon 12 min of NIR light irradiation at a minimum inhibitory concentration (MIC) of 40 μg/mL UCNPs@R-TiO2 nanocomposite. The bactericidal properties were further evaluated by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis. We found that the high bactericidal activity was due to the synergistic effect between the UCNPs and R-TiO2. Moreover, the UCNPs show excellent upconversion luminance properties, and the introduction of visible-light-absorbed R-TiO2 nanoparticles (2.8 eV) was conducive to the efficient separation and utilization of photogenerated electron-hole pairs.

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Bi, Fe, and Ti ternary co-doped ZrO2 nanocomposites as a mass spectrometry matrix for the determination of bisphenol A and tetrabromobisphenol A in tea

Cited by 8 publications

References 39 publications

Preparation of zirconia/zinc oxide nanocomposites by sol-gel method for highly sensitive determination of dopamine

Preparation of zirconia/zinc oxide nanocomposites by sol-gel method for highly sensitive determination of dopamine

Development of Cyanine 813@Imidazole-Based Doped Supported Devices for Divalent Metal Ions Detection

Using Gd-Enhanced β-NaYF4:Yb,Er Fluorescent Nanorods Coupled to Reduced TiO2 for the NIR-Triggered Photocatalytic Inactivation of Escherichia coli

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