Fast colorimetric sensing of H2O2 and glutathione based on Pt deposited on NiCo layered double hydroxide with double peroxidase-/oxidase-like activity

Cao, Xiaoyan; Yang, Hui; Wei, Qiulian; Yang, Yanting; Liu, Mei; Liu, Qingyun; Zhang, Xianxi

doi:10.1016/j.inoche.2020.108331

Cited by 16 publications

(12 citation statements)

References 52 publications

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“…LDHs can also be doped with catalytic materials that may also improve the structure of LDHs for increased optical response to H 2 O 2 . Cao et al synthesized Pt-doped CoNi-LDHs for colorimetric H 2 O 2 detection [52]. The LDHs were synthesized directly onto Ni foam via a hydrothermal process and immersed in a Na 2 PtCl 6 solution for Pt doping.…”

Section: H 2 Omentioning

confidence: 99%

“…In order to enhance fluorescence properties, LDHs work in combination with silver nanoclusters functionalized with chromophores [51]. Platinum-coated LDHs are materials with excellent activity in combination with chromophores for colorimetric H 2 O 2 sensing [52]. Rare earth materialfunctionalized LDHs improve the PL-based chemosensing ability of the electrode [53].…”

Section: Introductionmentioning

confidence: 99%

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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: H 2 Omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Kim

Varga

Adhikari³

et al. 2021

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…In addition, colorimetric methods, which allow immediate detection by qualitative color change observed by the naked eye, have recently gained attention due to faster operation, low cost, and simplicity. A summary of the performance of different optical sensors based on fluorophores incorporated in nanoclays, such as laponite [97][98][99][100][101], montmorillonite [102][103][104][105][106][107][108] or LDH [109], is presented in Table 8. They can be classified as a function of the type of the detected bioanalyte, as exposed in the following paragraphs.…”

Section: Nanoclay-based Optical Sensorsmentioning

confidence: 99%

New Trends in Nanoclay-Modified Sensors

et al. 2021

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Nanoclays are widespread materials characterized by a layered structure in the nano-scale range. They have multiple applications in diverse scientific and industrial areas, mainly due to their swelling capacity, cation exchange capacity, and plasticity. Due to the cation exchange capacity, nanoclays can serve as host matrices for the stabilization of several molecules and, thus, they can be used as sensors by incorporating electroactive ions, biomolecules as enzymes, or fluorescence probes. In this review, the most recent applications as bioanalyte sensors are addressed, focusing on two main detection systems: electrochemical and optical methods. Particularly, the application of electrochemical sensors with clay-modified electrodes (CLME) for pesticide detection is described. Moreover, recent advances of both electrochemical and optical sensors based on nanoclays for diverse bioanalytes’ detection such as glucose, H2O2, organic acids, proteins, or bacteria are also discussed. As it can be seen from this review, nanoclays can become a key factor in sensors’ development, creating an emerging technology for the detection of bioanalytes, with application in both environmental and biomedical fields.

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“…The synthesis of the substance C6NIB used for detection was performed following the modified steps in the literature. 20 As shown in Scheme 1 , the synthesis contains two steps. 4-Bromo-1,8-naphthalic anhydride, hexylamine, and triethylamine were added into anhydrous ethanol and refluxed to obtain the intermediate.…”

Section: Synthesis Of the Substance C6nibmentioning

confidence: 99%

Expedite Fluorescent Sensor Prototype for Hydrogen Peroxide Detection with Long-Life Test Substrates

et al. 2021

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We report a practical fluorescent sensor device for the trace amount detection of hydrogen peroxide vapor. In this paper, we have significantly improved the performance of fluorescence analysis for the detection of peroxides by solving the problems of packaging and storage of active materials and transferring the chemical experiment phenomenon to the actual project output. The fluorescent sensor molecule, test substrates, mixing methods, and the way to improve the life time are carefully studied. Combined with the design of circuit and programming, a field-test prototype was designed for peroxide explosives and its performance and algorithm were screened and optimized. In the detection of traces of H 2 O 2 generated by ultraviolet separation or leaked as inherent impurities, the high-efficiency and rapid detection of peroxide-based explosives is achieved. The detection limit of H 2 O 2 is expected to reach 2 ppb, and the response time can reach <0.5 s.

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Fast colorimetric sensing of H2O2 and glutathione based on Pt deposited on NiCo layered double hydroxide with double peroxidase-/oxidase-like activity

Cited by 16 publications

References 52 publications

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

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

New Trends in Nanoclay-Modified Sensors

Expedite Fluorescent Sensor Prototype for Hydrogen Peroxide Detection with Long-Life Test Substrates

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