Monitoring and removal of trace heavy metal ions via fluorescence resonance energy transfer mechanism: In case of silver ions

Chu, Zhaoyou; Wang, Wanni; Zhang, Chenyang; Ruan, Juan; Chen, Benjin; Xu, Hongmei; Qian, Haisheng

doi:10.1016/j.cej.2019.121927

Cited by 41 publications

(13 citation statements)

References 80 publications

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“…X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were performed for the final USP product, which further confirmed that UCNPs were successfully incorporated into the polymer micelles (Figures S3 and S4). 33,34 As shown in Figure S5, the strong absorption peak located at 303 nm can be easily identified as the characteristic peak of SP. Additionally, the concentrations of Y and SP were measured by inductively coupled plasma-mass spectrometry (ICP-MS) and ultraviolet−visible (UV−vis) absorption spectroscopy, respectively, and the encapsulation efficiencies of UCNPs and SP were calculated to be up to 53.0% and 75%, respectively (Figure 1d).…”

Section: Resultsmentioning

confidence: 99%

Phototherapy Using a Fluoroquinolone Antibiotic Drug to Suppress Tumor Migration and Proliferation and to Enhance Apoptosis

et al. 2022

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In this work, a fluoroquinolone antibiotic drug (sparfloxacin (SP)) was selected as a chemotherapy drug and photosensitizer for combined therapy. A facile chemical process was developed to incorporate SP and upconversion nanoparticles (UCNPs) into the thermally sensitive amphiphilic polymer polyethylene glycol-poly(2-hexoxy-2-oxo-1,3,2-dioxaphospholane). In vitro and in vivo experiments showed that 60% of the SP molecules can be released from the micelles of thermal-sensitive polymers using a 1 W cm −2 980 nm laser, and this successfully inhibits cell migration and metastasis by inhibiting type II topoisomerases in nuclei. Additionally, intracellular metal ions were chelated by SP to induce cancer cell apoptosis by decreasing the activity of superoxide dismutase and catalase. In particular, the fluoroquinolone molecules produced singlet oxygen ( 1 O 2 ) to kill cancer cells, and this was triggered by UCNPs when irradiation was performed with a 980 nm laser. Overall, SP retained a weak chemotherapeutic effect, achieved enhanced photosensitizer-like effects, and was able to repurpose old drugs to elevate the therapeutic efficacy against cancer, increase the specificity for suppressing tumor migration and proliferation, and enhance apoptosis.

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Section: Resultsmentioning

confidence: 99%

Phototherapy Using a Fluoroquinolone Antibiotic Drug to Suppress Tumor Migration and Proliferation and to Enhance Apoptosis

et al. 2022

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“…In previous investigations, two processes were combined to enhance the implementation of nanostructures on heavy metal detection [36][37][38]. The main advantage of this approach is that after the detection and quantification steps, the removed metal agglomerates in a nanometric size scale that is useful for further remediation.…”

Section: Measurement Methods Using Nanostructuresmentioning

confidence: 99%

“…After quantification and removal of any heavy metal, it is possible to convert core-shell nanoparticles, such Ag + , Cu 2+ , and Hg 2+ coated on ZnS and use them for the detection of another kind of contaminants. The ZnS nanoparticle can remove up to 3.98 μmol of Ag + [36]. The metal adsorbed on TiO 2 nanostructures enhanced the photocatalytic degradation of organic pollutants.…”

Section: Measurement Methods Using Nanostructuresmentioning

confidence: 99%

Low Dimensional Nanostructures: Measurement and Remediation Technologies Applied to Trace Heavy Metals in Water

García-Betancourt¹,

Jiménez²,

González-Hodges³

et al. 2021

Trace Metals in the Environment - New Approaches and Recent Advances

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A nanostructure is a system in which at least one external dimension is in the nanoscale, it means a length range smaller than 100 nm. Nanostructures can be natural or synthetic and determine the physicochemical properties of bulk materials. Due to their high surface area and surface reactivity, they can be an efficient alternative to remove contaminants from the environment, including heavy metals from water. Heavy metals like mercury (Hg), cadmium (Cd), arsenic (As), lead (Pb), and chromium (Cr) are highly poisonous and hazardous to human health due to their non-biodegradability and highly toxic properties, even at trace levels. Thus, efficient, low-cost, and environmentally friendly methodologies of removal are needed. These needs for removal require fast detection, quantification, and remediation to have heavy metal-free water. Nanostructures emerged as a powerful tool capable to detect, quantify, and remove these contaminants. This book chapter summarizes some examples of nanostructures that have been used on the detection, quantification, and remediation of heavy metals in water.

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“…A number of uorescent sensors have already been reported and were e cient employed for selective metal ion recognition and studies of these uorescent probes yielded promising results in terms of speci city [17,18].…”

Section: Introductionmentioning

confidence: 99%

2,6-bis(E)-4-methylbenzylidine)-cyclohexan-1-one as a Fluorescent-on Sensor for Ultra Selective Detection of Chromium Ion in Aqueous Media

et al. 2021

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In current decade, curcumin and its analogues have been broadly used in biological eld. However, there are relatively fewer studies regarding their uorescence based applications for chromium ion sensing in water samples. This article, hereby, reports the synthesis, FTIR and 1 H-NMR spectroscopic analyses and optical description of 2,6-bis(E)-4-methylbenzylidine)-cyclohexan-1-one (sensor C), as a uorescence-on sensor for trace level sensing of chromium. The sensor C exhibited an ultra-selective response to chromium among the tested heavy metal ions. Different parameters were optimized like pH, effect of concentration of sensor C, metal ion and contact time. The binding stoichiometry of C :Cr 3+ was calculated to be 2:1 (Job's plot) with a signi cantly low detection limit of 2.3×10 − 9 M. Sensor C were practically employed for detection of chromium in spiked water samples.

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Monitoring and removal of trace heavy metal ions via fluorescence resonance energy transfer mechanism: In case of silver ions

Cited by 41 publications

References 80 publications

Phototherapy Using a Fluoroquinolone Antibiotic Drug to Suppress Tumor Migration and Proliferation and to Enhance Apoptosis

Phototherapy Using a Fluoroquinolone Antibiotic Drug to Suppress Tumor Migration and Proliferation and to Enhance Apoptosis

Low Dimensional Nanostructures: Measurement and Remediation Technologies Applied to Trace Heavy Metals in Water

2,6-bis(E)-4-methylbenzylidine)-cyclohexan-1-one as a Fluorescent-on Sensor for Ultra Selective Detection of Chromium Ion in Aqueous Media

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