Eutectic solvent mediated synthesis of carbonated CoFe-LDH nanorods: The effect of interlayer anion (Cl−, SO42−, CO32−) variants for comparing the bifunctional electrochemical sensing application

Baby, Jeena N.; Stanley, Megha Maria; Sherlin, Abhikha; George, Matthieu

doi:10.1016/j.chemosphere.2022.137716

Cited by 16 publications

(7 citation statements)

References 81 publications

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“…These stacking planes indexed to the hexagonal lattice of the rhombohedral 3R system ( R 3 m ) authenticate the successful formation of LDH . A slight shift is observed in the position of the (003) reflection as the intercalated anions are changed from CO 3 2– (11.95°) to SO 4 2– (11.98°) or Cl – (11.68°). , The changes observed with variation in the interlamellar anions can be correlated to the size and charge effects of the anions present in the gallery region and approve the successful anion exchange process. , …”

Section: Resultsmentioning

confidence: 66%

“…33,34 The changes observed with variation in the interlamellar anions can be correlated to the size and charge effects of the anions present in the gallery region and approve the successful anion exchange process. 24,31 The FTIR spectra of CuMn−LDHs (Figure 1b) 30,35−42 with different interlamellar anions demonstrate certain signature vibrations pertaining to the anionic species involved. For all of the prepared samples, the interlamellar hydroxyl groups of the water molecules are represented by bands centered around ∼3600 cm −1 .…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…X-ray diffraction (XRD) investigations compile information concerning the crystalline phase purity, basal spacings, and crystallite sizes of the samples under analysis. XRD data of the pristine CuMn-LDHs with different interlayer anions are listed in Figure a. ,− From the diffraction pattern, the 2θ values at 11.9, 23.6, 33.8, 34.5, 39.1, and 46.6° are respectively assigned to (003), (006), (101), (012), (015), and (018) crystal planes of CuMn-LDH (JCPDS no. 22–0452).…”

Section: Resultsmentioning

confidence: 99%

“…The LDH frameworks formed by the periodic stacking of positively charged, brucite-like octahedral layers confine charge-compensating anions between the cationic layers to ensure charge neutrality . While the cationic layer can host various bivalent and trivalent metal cations, the anionic zone can accommodate several organic and inorganic moieties . A consensus is that trivalent ions replace a fraction of divalent ions from LDH matrix sites .…”

Section: Introductionmentioning

confidence: 99%

“… 23 While the cationic layer can host various bivalent and trivalent metal cations, the anionic zone can accommodate several organic and inorganic moieties. 24 A consensus is that trivalent ions replace a fraction of divalent ions from LDH matrix sites. 25 More importantly, incorporating transition metal-based LDHs is highly beneficial in terms of environmental benignity, abundant availability, and economic viability without compromising the catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

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Two-Dimensional CuMn-Layered Double Hydroxides: A Study of Interlayer Anion Variants on the Electrochemical Sensing of Trichlorophenol

Sriram,

Stanley,

Wang

et al. 2024

Inorg. Chem.

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Despite their diverse application profile, aromatic organochlorides such as 2,4,6-trichlorophenol (TP) are widely renowned for creating a negative toll on the balance of the ecosystem. Strict regulatory regimes are required to limit exposure to such organic pollutants. By deployment of a straightforward detection scheme, electrochemical sensing technology offers a competitive edge over the other techniques and practices available for pollutant monitoring.Here, we present a streamlined hydrothermal approach for synthesizing copper−manganese layered double hydroxide (CuMn-LDH) rods to be employed as electrocatalysts for detecting TP in various media. With a focused intention to leverage the full potential of the prepared CuMn-LDHs, the interlamellar region is configured using a series of intercalants. Further, a thorough comparative analysis of their structures, morphologies, and electrochemical performance is accomplished using various analytical techniques. The electrocatalytic oxidation ability of the CuMn-LDH toward TP molecules is markedly altered by incorporating various anions into the gallery region. The dynamic attributes of the developed sensor, such as a wide linear response (0.02−289.2 μM), a low detection limit (0.0026 μM), and good anti-interfering ability, acclaim its superior viability for real-time detection of TP with exceptional tolerance to the presence of foreign moieties. Hence, this work manifests that the nature of intercalants is a vital aspect to consider while designing LDH-based electrochemical probes to detect priority pollutants.

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