A series of POM compounds constructed using a flexible ligand containing three coordination groups: electrocatalytic and photocatalytic reduction and amperometric detection of Cr(<scp>vi</scp>)

Sun, Chenxi; Zhang, Yanping; Ying, Jun; Jin, Liang; Tian, Aixiang; Wang, Xiuli

doi:10.1039/d1nj05316g

Cited by 7 publications

(7 citation statements)

References 29 publications

(26 reference statements)

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“…With the scan rate of 200 mV·s –1 , the mean peak potentials E 1/2 = ( E pa + E pc )/2 are +201 and +74 mV for I–I′ and II–II′, respectively. These two peaks are attributed to two consecutive two-electron processes of γ-Mo 8 anions . With changing the scan rates from 20 to 500 mV·s –1 , the cathodic and anodic peak potentials shift toward the negative and positive direction, respectively, with increasing scan rates.…”

Section: Resultsmentioning

confidence: 94%

“…These two peaks are attributed to two consecutive two-electron processes of γ-Mo 8 anions. 34 With changing the scan rates from 20 to 500 mV•s −1 , the cathodic and anodic peak potentials shift toward the negative and positive direction, respectively, with increasing scan rates. The redox current has a nearly linear growth along with increasing scan rate, indicating that the rate of electronic and ionic transport and the kinetics of interfacial faradic redox reactions are rapid enough.…”

Section: Synthesis Of [(Hmentioning

confidence: 96%

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Construction of Five POM Compounds by Tuning Spacer Length and Piperazine/Morpholine Groups: Electrochemical Sensing Properties and Application on Capacitor Materials

Zhang

Cui

Liu

et al. 2023

Crystal Growth & Design

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Through tuning piperazine and morpholine groups and spacer length in organic ligands, five [Mo 8 O 26 ] 4− -based compounds have been obtained, [(H 2 tep) 2morpholine, and tpm = 4-(2-(4H-1,2,4-triazol-4yl)propyl)morpholine). In compound 1, the N atom of tep directly connects the Mo atom of a [γ-Mo 8 O 26 ] 4− anion through a Mo−N bond without transition-metal ions. The [γ-Mo 8 O 26 ] 4− anions in 2 are linked by a Zn atom to construct an inorganic layer with tep ligand coordination with Zn and Mo atoms by Zn−N and Mo−N bonds.The N atom in the piperazine group does not link with the metal atoms in 1 and 2. However, the O atom in the morpholine group in 3−5 coordinates with Ag, Cu, and Co atoms, respectively. Compound 3 shows a 3D framework with 2D layers linked by binuclear Ag clusters. Compounds 4 and 5 are isostructural, containing two kinds of chains. The chains connect each other to form a 3D framework. Both N and O of tem and tpm participate to link metal atoms in 3−5, which are conducive to build high-dimensional structures. The spacer length, piperazine and morpholine groups, and different metal ions all exhibit effects on structures under hydrothermal conditions. Furthermore, electrocatalytic reduction of KNO 2 and KBrO 3 and electrocatalytic oxidation of ascorbic acid were studied. These compounds can be used as electrochemical sensors for detecting NO 2 − . They also show selective photocatalytic properties. Compounds 1−5 own properties of capacitor materials.

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Section: Resultsmentioning

confidence: 94%

Section: Synthesis Of [(Hmentioning

confidence: 96%

Construction of Five POM Compounds by Tuning Spacer Length and Piperazine/Morpholine Groups: Electrochemical Sensing Properties and Application on Capacitor Materials

Zhang

Cui

Liu

et al. 2023

Crystal Growth & Design

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“…Anderson-type POM-MOFs have also attracted increasing interest. [112][113][114][115][116][117][118][119] In 2016, Wang et al 19a). 116 Furthermore, this material can serve as an electrocatalyst and used for electrocatalytic reduction of NO2 -, Cr(VI) and BrO3as well as the electrocatalytic oxidation of ascorbic acid.…”

Section: Anderson-type Pom-mofsmentioning

confidence: 99%

“…[112][113][114][115][116][117][118][119] In 2016, Wang et al 19a). 116 Furthermore, this material can serve as an electrocatalyst and used for electrocatalytic reduction of NO2 -, Cr(VI) and BrO3as well as the electrocatalytic oxidation of ascorbic acid. 116 Besides, her group also introduced the multifunctional 3-(…”

Section: Anderson-type Pom-mofsmentioning

confidence: 99%

State-of-the-art advances in the syntheses, structures, and applications of polyoxometalate-based metal–organic frameworks

et al. 2023

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Polyoxometalate-based metal-organic frameworks (PMOFs) as extended solids assembled from metal-oxide cluster units and metal-organic groups have been widely concerned in recent years because of their unique advantages containing both polyoxometalate (POM) and metal-organic framework (MOF) units as well as their multifunctional applications in catalysis, sensing, energy storage, etc. In this review, recent progresses in syntheses, structural diversity and potential applications of PMOFs are summarized. In the structural aspect, two categories of PMOFs (POM@MOFs and POM-MOFs) have been discussed: POM@MOFs refer to the PMOFs in which POM units are not involved in coordination with MOFs whereas POM-MOFs are the PMOFs in which POM units coordinate with MOFs. In the regard of properties, some application explorations on catalysis, dye adsorption and degradation, chemical sensing and energy storage have been selectively stated. Finally, personal outlook and viewpoints on this field have been given. It is expected that this review can supply some fulfilling inspiration and helpful tips for the rational design of function-oriented PMOFs in the future.

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“…[15] The studies showed that various neurological problems such as Parkinson's disease, schizophrenia, some behavioral problems, Alzheimer's disease, and mental retardation occur due to excess lead in the body. [16] Because of the high toxicity of heavy metals on the ecosystem, many studies are currently being conducted on the determination [17][18][19] and removal of these metals by using different voltammetric techniques [20][21][22]. Also, traditional analytical methods such as atomic absorption spectroscopy [23], uorescence spectrometry [24], and atomic emission spectroscopy [25], can be used for this purpose.…”

Section: Introductionmentioning

confidence: 99%

A functional electrochemical sensing platform for the detection of lead ions

Khaleel

Soylu

2023

Preprint

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A novel electrochemical sensor for the detection of lead ions was constructed by using electrodeposition of gold nanoparticles (GNPs) and glutathione (GSH) onto reduced graphene oxide (rGO) to form a GSH@GNP@rGO nanocomposite on a glassy carbon electrode (GSH@GNP@rGO@GCE). The sensing properties of the obtained sensor were tested by Cyclic Voltammetry (CV) and Differential Pulse Voltammetry (DPV). Under optimized experimental conditions, the voltammetry response gradually raises by increasing the concentration (2-20 μΜ). The result showed that the GSH@GNP@rGO@GCE sensor exhibited high sensitivity towards Pb(II) with a low detection limit of 0.43 μMby DPV. Our studies suggest that the GSH@GNP@rGO nanocomposite could potentially be used for detecting Pb(II).

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A series of POM compounds constructed using a flexible ligand containing three coordination groups: electrocatalytic and photocatalytic reduction and amperometric detection of Cr(vi)

Cited by 7 publications

References 29 publications

Construction of Five POM Compounds by Tuning Spacer Length and Piperazine/Morpholine Groups: Electrochemical Sensing Properties and Application on Capacitor Materials

Construction of Five POM Compounds by Tuning Spacer Length and Piperazine/Morpholine Groups: Electrochemical Sensing Properties and Application on Capacitor Materials

State-of-the-art advances in the syntheses, structures, and applications of polyoxometalate-based metal–organic frameworks

A functional electrochemical sensing platform for the detection of lead ions

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