An ultra-sensitive electrochemical sensor of Ni/Fe-LDH toward nitrobenzene with the assistance of surface functionalization engineering

Li, Shanshan; Fang, Jinhui; Li, Li; Zhu, Min; Zhang, Feng; Zhang, Boya; Jiang, Tianyue; Zhang, Yongxing

doi:10.1016/j.talanta.2021.122087

Cited by 40 publications

(11 citation statements)

References 61 publications

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“…A recent study by Li et al exemplifies how the aforementioned characterization methods help optimize the performance of LDH-based nitrobenzene (NB) sensors [105]. Sodium dodecyl sulfate (SDS)-functionalized NiFe-LDHs NiFe-SDS-LDHs were synthesized via a hydrothermal reaction between NiCl 2 •6H 2 O, FeCl 3 •6H 2 O, CON 2 H 4 , NH 4 F, and SDS in a Teflon-lined autoclave.…”

Section: Ldh Characterizationmentioning

confidence: 99%

Recent Advances in Layered Double Hydroxide-Based Electrochemical and Optical Sensors

Kim

Varga

Adhikari³

et al. 2021

Nanomaterials

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Layered double hydroxides (LDHs) have attracted considerable attention as promising materials for electrochemical and optical sensors owing to their excellent catalytic properties, facile synthesis strategies, highly tunable morphology, and versatile hosting ability. LDH-based electrochemical sensors are affordable alternatives to traditional precious-metal-based sensors, as LDHs can be synthesized from abundant inorganic precursors. LDH-modified probes can directly catalyze or host catalytic compounds that facilitate analyte redox reactions, detected as changes in the probe’s current, voltage, or resistance. The porous and lamellar structure of LDHs allows rapid analyte diffusion and abundant active sites for enhanced sensor sensitivity. LDHs can be composed of conductive materials such as reduced graphene oxide (rGO) or metal nanoparticles for improved catalytic activity and analyte selectivity. As optical sensors, LDHs provide a spacious, stable structure for synergistic guest–host interactions. LDHs can immobilize fluorophores, chemiluminescence reactants, and other spectroscopically active materials to reduce the aggregation and dissolution of the embedded sensor molecules, yielding enhanced optical responses and increased probe reusability. This review discusses standard LDH synthesis methods and overviews the different electrochemical and optical analysis techniques. Furthermore, the designs and modifications of exemplary LDHs and LDH composite materials are analyzed, focusing on the analytical performance of LDH-based sensors for key biomarkers and pollutants, including glucose, dopamine (DA), H2O2, metal ions, nitrogen-based toxins, and other organic compounds.

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Section: Ldh Characterizationmentioning

confidence: 99%

Recent Advances in Layered Double Hydroxide-Based Electrochemical and Optical Sensors

Kim

Varga

Adhikari³

et al. 2021

Nanomaterials

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“…The number of electrons transferred in the irreversible reaction can be determined using Nicholson's model Eqs. 1 and 2 (Cheng et al, 2021;Li et al, 2021). Frontiers in Chemistry frontiersin.org…”

Section: Electrochemical Behavior Of P-nitrophenol On Vertically-orde...mentioning

confidence: 99%

Sensitive electrochemical detection of p-nitrophenol by pre-activated glassy carbon electrode integrated with silica nanochannel array film

Tang

2022

Front. Chem.

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Convenient, rapid and sensitive detection of p-nitrophenol (p-NP), one of the priority environmental pollutants, in environmental samples is of great significance. Electrochemical sensor with simple fabrication process, high sensitivity and selectivity, good antifouling, and regeneration performance is highly desirable. Herein, an electrochemical sensing platform is demonstrated based on the integration of vertically-ordered mesoporous silica-nanochannel film (VMSF) on electrochemical pre-activated glassy carbon electrode (p-GCE), which is able to realize ultrasensitive detection of p-NP in environmental samples. Electrochemical pre-activation of GCE is achieved through a simple and green electrochemical polarization process including anodic oxidation at high voltage and the following cathodic reduction at low voltage. The p-GCE possesses enhanced active area and introduced active sites, and enables stable binding of VMSF. VMSF is easily grown on p-GCE through the electrochemically assisted self-assembly (EASA) method within 10 s. Owing to the hydrogen bonding between silanol groups and p-NP, VMSF nanochannels display strong enrichment effect for the detection of p-NP. The developed VMSF/p-GCE sensor can achieve sensitive detection of p-NP ranging from 10 nM to 1 μM and from 1 to 30 μM with a limit of detection (LOD) of 9.4 nM. Considering the antifouling ability of VMSF, detection of p-NP in pond water is achieved.

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“…The performance of the present GC/GNNS-S electrode towards the sensing of Nb was compared with the recently reported papers (Table S3, ESI †). 19,[25][26][27][28][29][30][31][32][33][34][35][36][37] The inspection of Table S3 (ESI †) indicates that most of the reported sensors for Nb were based on nanocomposites. The preparation of these nanocomposites not only involves several steps but also adopts tedious procedures.…”

Section: Sensitive and Selective Determination Of Nbmentioning

confidence: 99%

“…For example, Li et al fabricated a sensor for Nb based on immobilizing Ni/Fe layered double hydroxides functionalized with sodium dodecyl sulphate on a GC electrode. 33 Here, the sensing of Nb is based on the adsorption mechanism and upon repetitive use, the electrode fails to give ample response. Further, the sensors fabricated from SSG-AuAg and EDAS/g-C 3 N 4 -Ag are expensive.…”

Section: Sensitive and Selective Determination Of Nbmentioning

confidence: 99%

Performance of graphitic carbon nitride nanosheets derived from liquid and thermal exfoliations towards the electrochemical reduction of nitrobenzene

Ajith

John

2022

New J. Chem.

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An ultra-sensitive electrochemical sensor of Ni/Fe-LDH toward nitrobenzene with the assistance of surface functionalization engineering

Cited by 40 publications

References 61 publications

Recent Advances in Layered Double Hydroxide-Based Electrochemical and Optical Sensors

Recent Advances in Layered Double Hydroxide-Based Electrochemical and Optical Sensors

Sensitive electrochemical detection of p-nitrophenol by pre-activated glassy carbon electrode integrated with silica nanochannel array film

Performance of graphitic carbon nitride nanosheets derived from liquid and thermal exfoliations towards the electrochemical reduction of nitrobenzene

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