Spectrophotometric determination of peroxymonosulfate anions via oxidative decolorization of dyes induced by cobalt

Zhang, J. Q.; Zou, Jing; Z., H.; Song, Yang

doi:10.1039/c5ay02886h

Cited by 17 publications

(8 citation statements)

References 20 publications

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“…Currently, several methods have been developed for the PMS determination, including thermometric titrimetry, liquid chromatography, chemiluminescence, and UV–vis absorption spectroscopy. − To make a clear comparison among these methods, their linear ranges and detection limits are summarized in Supporting Information Table S1. Thermometric titrimetry and liquid chromatography could be used for the quantification of PMS in a mixed solution containing PDS and H 2 O 2 , but they are time-consuming and limited by a low sensitivity. , The chemiluminescence method possesses a relatively low detection limit; however, the linear range is too narrow .…”

mentioning

confidence: 99%

Ultrasensitive Fluorescence Detection of Peroxymonosulfate Based on a Sulfate Radical-Mediated Aromatic Hydroxylation

Huang

Qian

et al. 2018

Anal. Chem.

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Recently, peroxymonosulfate (PMS)-based advanced oxidation processes have exhibited broad application prospects in the environment field. Accordingly, a simple, rapid, and ultrasensitive method is highly desired for the specific recognition and accurate quantification of PMS in various aqueous solutions. In this work, SO 4•− -induced aromatic hydroxylation was explored, and based on that, for the first time, a novel fluorescence method was developed for the PMS determination using Co 2+ as a PMS activator and benzoic acid (BA) as a chemical probe. Through a suite of spectral, chromatographic, and mass spectrometric analyses, SO 4•− was proven to be the dominant radical species, and salicylic acid was identified as the fluorescent molecule. As a result, a whole radical chain reaction mechanism for the generation of salicylic acid in the BA/PMS/Co 2+ system was proposed. This fluorescence method possessed a rapid reaction equilibrium (<1 min), an ultrahigh sensitivity (detection limit = 10 nM; quantification limit = 33 nM), an excellent specificity, and a wide detection range (0−100 μM). Moreover, it performed well in the presence of possible interfering substances, including two other peroxides (i.e., peroxydisulfate and hydrogen peroxide), some common ions, and organics. The detection results for real water samples further validated the practical utility of the developed fluorescence method. This work provides a new method for the specific recognition and sensitive determination of PMS in complex aqueous solutions.

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confidence: 99%

Ultrasensitive Fluorescence Detection of Peroxymonosulfate Based on a Sulfate Radical-Mediated Aromatic Hydroxylation

Huang

Qian

et al. 2018

Anal. Chem.

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“…It is known that PMS can be activated by transition metals (Fe, Co, Mn, etc. ), [24][25][26][27] among which Co is often considered to be the best for PMS activation. [24,28] However, Co-based catalysts are unstable and can result in a secondary contamination to the environment due to the toxicity of Co 2+ .…”

Section: Introductionmentioning

confidence: 99%

“…), [24][25][26][27] among which Co is often considered to be the best for PMS activation. [24,28] However, Co-based catalysts are unstable and can result in a secondary contamination to the environment due to the toxicity of Co 2+ . [25] Iron is another widely used transition metal for PMS activation, which is more friendly to the environment without toxicity.…”

Section: Introductionmentioning

confidence: 99%

Fe Single‐Atom Catalyst for Efficient and Rapid Fenton‐Like Degradation of Organics and Disinfection against Bacteria

Yang

Yang²,

Yin

et al. 2022

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The Fenton‐like reaction has great potential in water treatment. Herein, an efficient and reusable catalytic system is developed based on atomically dispersed Fe catalyst by anchoring Fe atoms on nitrogen‐doped porous carbon (Fe SA/NPCs). The catalyst of Fe SA/NPCs exhibits enhanced performance in activating peroxymonosulfate (PMS) for organic pollutant degradation and bacterial inactivation. The Fe SA/NPCs + PMS system demonstrates a high turnover frequency of 39.31 min−1 in Rhodamine B (RhB) degradation as well as a strong bactericidal activity that can completely sterilize an Escherichia coli culture within 5 min. Meanwhile, the degradation activity of RhB by Fe SA/NPCs is improved up to 28 to 371‐fold in comparison with the controls. Complete degradation of RhB can be achieved in 30 s by the Fe SA/NPCs + PMS system, demonstrating an efficiency much higher than most traditional Fenton‐like processes. Experiments with different radical scavengers and density functional theory calculations have revealed that singlet oxygen (1O2) generated on the N‐coordinated single Fe atom (Fe‐N4) sites is the key reactive species for the effective and rapid pollutant degradation and bacterial inactivation. This work innovatively affords a promising single‐Fe‐atom catalyst/PMS system for applying Fenton‐like reactions in water treatment.

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“…This conventional method is tedious, time consuming, and poorly sensitive. Detection of PMS and persulfate using spectrophotometric methods is less time consuming, as these are based on oxidative decolourization of dyes by Fe 2+ or heat‐activated persulfate and cobalt‐activated PMS . As iodometric titration and spectrophotometric methods are based on the oxidation reaction of oxidants with compounds, the selectivity of these methods becomes a substantial problem if a mixture of peroxides or other oxidants is analyzed in multiple AOP systems.…”

Section: Introductionmentioning

confidence: 99%

“…As iodometric titration and spectrophotometric methods are based on the oxidation reaction of oxidants with compounds, the selectivity of these methods becomes a substantial problem if a mixture of peroxides or other oxidants is analyzed in multiple AOP systems. Furthermore, 1–15 min are also needed for the reaction before subsequent analysis . There are no selectivity and reaction time problems for the chromatography method during PMS analysis.…”

Section: Introductionmentioning

confidence: 99%

Fast determination of peroxymonosulfate by flow injection chemiluminescence using the Tb(III) ligand in micelle medium

et al. 2019

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Based on the chemiluminescence (CL) phenomenon of peroxymonosulfate (PMS) and Tb(III) enhanced by its ligand in a micelle microenvironment, a fast and sensitive flow injection CL method for PMS detection was proposed and applied to the analysis of different samples and PMS decomposition. Under the optimized conditions, a linear range was obtained from 4.0 × 10–6 mol L–1 to 2.0 × 10–4 mol L–1 with a high correlation coefficient (r = 0.9997), detection limit of 5.0 × 10–7 mol L–1 (S/N = 3) and relative standard deviation of 2.4% for 1.0 × 10–5 mol L–1 PMS (n = 9). This was successfully applied to the determination of PMS in Virkon powder, tap water, and swimming pool water samples with satisfactory recoveries from 94.8% to 104.8%. In particular, the analytical frequency could be as fast as five samples per minute because there was no reaction step before analysis and the CL phenomenon was instantaneous. Therefore, this CL method has also been successfully applied to investigate the PMS decomposition profiles in carbon material (carbon nanotubes, carbon nanofibres, activated carbon and graphene oxide) catalysis systems, which followed pseudo‐first‐order kinetics with good correlation coefficients (r > 0.9305). Quenching experiments and electron spin resonance spectra verified that the CL phenomenon was due to the formation of singlet oxygen, and that hydroxyl and sulfate radicals might be important in the generation of singlet oxygen. Tb(III) is the luminescent emitter according to the characteristics emission bands of the fluorescence and CL spectra in different media.

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Spectrophotometric determination of peroxymonosulfate anions via oxidative decolorization of dyes induced by cobalt

Abstract: Dyes can be decolorized by the activation of peroxymonosulfate (PMS) in the presence of cobalt, and four good linear correlations between the depletion of dyes at their maximum absorption wavelengths and the concentration of PMS are demonstrated under the optimum conditions.

Cited by 17 publications

References 20 publications

Ultrasensitive Fluorescence Detection of Peroxymonosulfate Based on a Sulfate Radical-Mediated Aromatic Hydroxylation

Ultrasensitive Fluorescence Detection of Peroxymonosulfate Based on a Sulfate Radical-Mediated Aromatic Hydroxylation

Fe Single‐Atom Catalyst for Efficient and Rapid Fenton‐Like Degradation of Organics and Disinfection against Bacteria

Fast determination of peroxymonosulfate by flow injection chemiluminescence using the Tb(III) ligand in micelle medium

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