Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Li, Chao; Huang, Shaojun; Min, Chungang; Du, Ping; Xia, Yi; Yang, Chao; Huang, Qiuling

doi:10.3390/polym10010024

Cited by 23 publications

(15 citation statements)

References 73 publications

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“…The electrochemical experiments were performed using PGSTAT 12 AUTOLAB potentiostat (Utrecht, The Netherlands) connected to a three-electrode cell [19][20][21][22][23]. Bare or modified glassy carbon (GC) disks (3 mm diameter, Metrohm, Herisau, Switzerland) were used as working electrodes.…”

Section: Methodsmentioning

confidence: 99%

“…CMEs were tested for electrochemical detection of HMs ions in 0.1 M buffer acetate (pH 5.5) solution as supporting electrolyte, following the procedure detailed in [19][20][21][22][23].…”

Section: Methodsmentioning

confidence: 99%

“…The azo group allows the conjugation between azulene and thiazole units, and the extra phenyl group connected to the thiazole extends this conjugation, leading to potentially favorable properties. It is known that derivatives containing the thiadiazole group have a complexing effect on heavy metals (HMs) [18,19], which is why 5-amino-1,3,4-thiadiazole-2-thiol has been used to modify the silica gel for HM ion removal [18]. Poly(2,5-dimercapto-1,3,4-thiadiazole) nanosheets have shown impressive properties in lead absorption, being promising materials in the fields of water treatment, sensors, and electrode materials [19].…”

Section: Introductionmentioning

confidence: 99%

“…It is known that derivatives containing the thiadiazole group have a complexing effect on heavy metals (HMs) [18,19], which is why 5-amino-1,3,4-thiadiazole-2-thiol has been used to modify the silica gel for HM ion removal [18]. Poly(2,5-dimercapto-1,3,4-thiadiazole) nanosheets have shown impressive properties in lead absorption, being promising materials in the fields of water treatment, sensors, and electrode materials [19]. The thiadiazoles are strongly absorbed on mercury, more than cobalt and copper, due to the same complexation effect [19].…”

Section: Introductionmentioning

confidence: 99%

“…Poly(2,5-dimercapto-1,3,4-thiadiazole) nanosheets have shown impressive properties in lead absorption, being promising materials in the fields of water treatment, sensors, and electrode materials [19]. The thiadiazoles are strongly absorbed on mercury, more than cobalt and copper, due to the same complexation effect [19]. The binding of thiadiazole to an azulene residue is an unexploited subject in the literature and creates the premise for recognition of HMs using CMEs based on T. The electropolymerization of similar azulenes [20] can occur by π-steaking [21].…”

Section: Introductionmentioning

confidence: 99%

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Surface Characterization of New Azulene-Based CMEs for Sensing

et al. 2021

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Films of 2-(azulen-1-yldiazenyl)-5-phenyl-1,3,4-thiadiazole (T) were successfully deposited on glassy carbon surfaces to prepare chemically modified electrodes (CMEs). Their surface characterization was analyzed by electrochemical impedance spectroscopy (EIS), atomic force microscopy (AFM), and scanning electron microscopy (SEM). This complexing monomer has been deposited through direct electropolymerization in conditions established during the electrochemical characterization of T performed by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and rotating disk electrode voltammetry (RDE). These methods put in evidence the high degree of asymmetry of oxidation and reduction curves, which is due to the irreversible processes occurring at opposite potentials. The film formation was confirmed by ferrocene redox assay probe. The properties of the electrodes modified with T (T-CMEs) were investigated for sensing heavy metal (HM) ions in water solutions, with promising results for Pb(II) among Cd(II), Cu(II), and Hg(II) ions.

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Section: Methodsmentioning

confidence: 99%

“…CMEs were tested for electrochemical detection of HMs ions in 0.1 M buffer acetate (pH 5.5) solution as supporting electrolyte, following the procedure detailed in [19][20][21][22][23].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Surface Characterization of New Azulene-Based CMEs for Sensing

et al. 2021

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2,5‐Dimercapto‐1,3,4‐Thiadiazole (DMCT)‐Based Polymers for Rechargeable Metal–Sulfur Batteries

Bhargav

Manthiram

2023

Energy & Environ Materials

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Organosulfur materials are a sustainable alternative to the present‐day layered oxide cathodes in lithium‐based batteries. One such organosulfur material that was intensely explored from the 1990s to early 2010s is 2,5‐dimercapto‐1,3,4‐thiadiazole (DMCT). However, research interest declined as the electrode reactions with DMCT were assumed to be too sluggish to be practical. Armed with the advances in metal–sulfur batteries, we revisit DMCT‐based materials in the form of poly[tetrathio‐2,5‐(1,3,4‐thiadiazole)], referred to as pDMCT‐S. With an appropriate choice of electrode design and electrolyte, pDMCT‐S cathode paired with a Li‐metal anode shows a capacity of 715 mA h g−1 and a Coulombic efficiency of 97.7% at a C/10 rate, thus quelling the concerns of sluggish reactions. Surprisingly, pDMCT‐S shows significantly improved long‐term cyclability compared to a sulfur cathode. Investigations into the origin of the stability reveals that the discharge product Li‐DMCT in its mesomeric form can strongly bind to polysulfides, preventing their dissolution into the electrolyte and shuttling. This unique mechanism solves a critical problem faced by sulfur cathodes. Encouragingly, this mechanism results in a stable performance of pDMCT‐S with Na‐metal cells as well. This study opens the potential for exploring other organic materials that have inherent polysulfide sequestering capabilities, enabling long‐life metal–sulfur batteries.

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Synthesis and characterization of mesoporous polymeric microspheres of methacrylic derivatives of aromatic thiols

et al. 2019

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The paper presents the synthesis and characterization of mesoporous microspheres of derivatives of three aromatic thiols: S-phenyl 2-methylprop-2-enethioate (PSM), S,S′-thiodi-4,1-phenylenebis(thiomethacrylate) (DMSPS), and bis[4(2-hydroxy-3-methacryloyloxypropoxy)phenyl]sulfide (BES.DM) with divinylbenzene (DVB). The microspheres were obtained by the emulsion-suspension polymerization procedure. The chemical and porous structure, morphology, and properties of the microspheres were analyzed by attenuated total reflection-Fourier transform infrared (ATR/FT-IR) spectroscopy, lowtemperature nitrogen adsorption data, optical microscope MORPHOLOGI G3, differential scanning calorimetry (DSC), and wavelength dispersive X-ray fluorescence (WD-XRF). Moreover, studies on the Pb(II) ions sorption process were carried out on the above mentioned compounds. The sorption kinetics and mechanism were described by the pseudo-first order, pseudo-second order, and intraparticle diffusion models. The sorption equilibria were described by the Langmuir and Freundlich isotherms. The PSM-DVB, DMSPS-DVB, and BES.DM-DVB microspheres exhibit high thermal resistance and good adsorption properties of Pb(II) ions. The best adsorption properties for the examined microspheres were obtained at pH 5. The highest monolayer adsorption capacity determined by Langmuir isotherm was obtained for the DMSPS-DVB microspheres and was equal to 22.54 mg/g. The preliminary studies show that the synthesized microspheres can be used as heavy metal ion sorbents from aqueous solutions.

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Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Cited by 23 publications

References 73 publications

Surface Characterization of New Azulene-Based CMEs for Sensing

Surface Characterization of New Azulene-Based CMEs for Sensing

2,5‐Dimercapto‐1,3,4‐Thiadiazole (DMCT)‐Based Polymers for Rechargeable Metal–Sulfur Batteries

Synthesis and characterization of mesoporous polymeric microspheres of methacrylic derivatives of aromatic thiols

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