A novel electrochemical sensor based on TiO2–Ti3C2TX/CTAB/chitosan composite for the detection of nitrite

Wang, Xue; Li, Mengjia; Yang, Shuang; Shan, Jiajia

doi:10.1016/j.electacta.2020.136938

Cited by 77 publications

(25 citation statements)

References 38 publications

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“…After being loaded with TiO 2 nanoparticles under hydrothermal conditions, the characteristics peaks of TiO 2 at 25.4, 38.0, 48.0, 54, 55, 63, 69, 70, and 75° are detected on the Ti 3 C 2 T x @TiO 2 (T-T) composite, which are indexed to the (101), (004), (200), (105), (211), (204), (116), (220), and (215) planes of anatase phase TiO 2 (JCPDS no. 21-1272), respectively . Meanwhile, the diffraction peaks of Ti 3 C 2 T x nanosheets at the (004), (101), (105), and (110) planes are observed, but their intensities decrease to some degrees because of the presence of TiO 2 .…”

Section: Resultsmentioning

confidence: 96%

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Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

et al. 2023

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A ternary component photocatalyst composed of amino acids/peptide, Ti 3 C 2 T x , and TiO 2 was created by incorporating peptide chains of wool keratin between T i 3 C 2 T x nanosheets and TiO 2 nanoparticles through the combination of both low-temperature vibration-assisted grinding process for making Ti 3 C 2 T x nanosheets and hydrothermal synthesis process for producing TiO 2 nanoparticles. The as-obtained amino acid/ peptide-Ti 3 C 2 T x -TiO 2 (P-T-T) composite was further calcined under nitrogen gas protection condition to produce calcined P-T-T composite photocatalysts (CP-T-T). The photocatalytic properties of the control Ti 3 C 2 T x -TiO 2 (T-T), P-T-T, and calcined P-T-T (CP-T-T) composites were evaluated by examining their performance in the photodegradation of C.I. Reactive Blue 194 dye, tetracycline hydrochloride, and levofloxacin antibiotics. First-principles calculations were performed to verify the experimental results. It was concluded that in comparison with the T-T and P-T-T composites, the CP-T-T composite showed a significantly better photocatalytic activity in the decomposition of C.I. Reactive Blue 194. This was ascribed to the large Brunauer−Emmett− Teller (BET) specific surface area, the presence of micropores and mesopores, the narrowed band gap with an internal electric field (IEF), and the intimate contacts among the peptide, Ti 3 C 2 T x , and TiO 2 , which resulted in the fast transfer and separation of charge carriers in the photocatalytic activity of the composite. The P-T-T and CP-T-T composite photocatalysts have shown different photodegradation pathways when degrading the C.I. Reactive Blue 194 dyes. The peptide chains of wool keratin led to the redistribution of the electron accumulation and depletion on the peptide, Ti 3 C 2 T x , and TiO 2 , which changed the direction of IEF in the composite. It is interestingly noted that, when degrading C.I. Reactive Blue 194, the P-T-T composite photocatalysts showed an adsorption-mediated photocatalytic degradation while CP-T-T composite photocatalysts showed an charge transfer-mediated photocatalytic degradation.

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Section: Resultsmentioning

confidence: 96%

“…21-1272), respectively. 34 Meanwhile, the diffraction peaks of Ti 3 C 2 T x nanosheets at the (004), ( 101), (105), and (110) planes are observed, but their intensities decrease to some degrees because of the presence of TiO 2 . Moreover, the major diffraction peak at 6.0°is disappeared.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

et al. 2023

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“…[78] developed an electrochemical sensor for the detection of ifosfamide (IFO), acetaminophen (ACOP), domperidone (DOM), and sumatriptan (SUM) based on self‐assembled MXene/MWCNT/Chitosan nanocomposite thin film and got LODs for IFO, ACOP, DOM, and SUM of 0.00031, 0.00028, 0.00034, and 0.00042 μM, respectively. Other various analytes like uric acid (UA) and folic acid (FA) [79], NO 2 − [80–81], 4‐nitroquinoline N‐oxide (4‐NO) [85], Pb 2+ and Cd 2+ heavy metal ions [82–84], hydrazine [86] and dopamine [87] are all listed in the Table 2. The Nb‐based MXene [117] and V‐based MXene [76] for electrochemical sensing have also been concerned.…”

Section: Application Of Mxene In Electrochemical Sensorsmentioning

confidence: 99%

Application of MXene in Electrochemical Sensors: A Review

Sun

et al. 2021

Electroanalysis

128

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Electroanalysis has obtained considerable progress over the past few years, especially in the field of electrochemical sensors. Broadly speaking, electrochemical sensors include not only conventional electrochemical biosensors or non‐biosensors, but also emerging electrochemiluminescence (ECL) sensors and photoelectrochemical (PEC) sensors which are both combined with optical methods. In addition, various electrochemical sensing devices have been developed for practical purposes, such as multiplexed simultaneous detection of disease‐related biomarkers and non‐invasive body fluid monitoring. For the further performance improvement of electrochemical sensors, material is crucial. Recent years, a kind of two‐dimensional (2D) nanomaterial MXene containing transition metal carbides, nitrides and carbonitrides, with unique structural, mechanical, electronic, optical, and thermal properties, have attracted a lot of attention form analytical chemists, and widely applied in electrochemical sensors. Here, we reviewed electrochemical sensors based on MXene from Nov. 2014 (when the first work about electrochemical sensor based on MXene published) to Mar. 2021, dividing them into different types as electrochemical biosensors, electrochemical non‐biosensors, electrochemiluminescence sensors, photoelectrochemical sensors and flexible sensors. We believe this review will be of help to those who want to design or develop electrochemical sensors based on MXene, hoping new inspirations could be sparked.

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“…2D MXenes are candidates for energy storage [30] (Li-ion batteries, supercapacitors) and electromagnetic interference shielding applications [31][32][33][34][35] and in the form of composites become ever more useful for sensing as e.g. gas sensing devices [36,37], pressure sensor [38,39] and sensors for various analytes [40][41][42][43]. Number of other biomedical applications (such as biosensor, biological imaging, photothermal therapy, drug delivery, theranostic nanoplatforms and antibacterial agents) have become a challenge for MXenes [44].…”

Section: Introduction 11 Mxenes: Their Precursors Characterization Unique Properties and Applicationsmentioning

confidence: 99%

Ti₃C₂ MXene-Based Nanobiosensors for Detection of Cancer Biomarkers

Lorencová¹,

Sadasivuni²,

Kasák³

et al. 2021

Novel Nanomaterials

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This chapter provides information about basic properties of MXenes (2D nanomaterials) that are attractive for a design of various types of nanobiosensors. The second part of the chapter discusses MXene synthesis and various protocols for modification of MXene making it a suitable matrix for immobilization of bioreceptors such as antibodies, DNA aptamers or DNA molecules. The final part of the chapter summarizes examples of MXene-based nanobiosensors developed using optical, electrochemical and nanomechanical transducing schemes. Operational characteristics of such devices such as sensitivity, limit of detection, assay time, assay reproducibility and potential for multiplexing are provided. In particular MXene-based nanobiosensors for detection of a number of cancer biomarkers are shown here.

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A novel electrochemical sensor based on TiO2–Ti3C2TX/CTAB/chitosan composite for the detection of nitrite

Cited by 77 publications

References 38 publications

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Application of MXene in Electrochemical Sensors: A Review

Ti₃C₂ MXene-Based Nanobiosensors for Detection of Cancer Biomarkers

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A novel electrochemical sensor based on TiO2–Ti3C2TX/CTAB/chitosan composite for the detection of nitrite

Cited by 77 publications

References 38 publications

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti3C2Tx-TiO2 Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti3C2Tx-TiO2 Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Application of MXene in Electrochemical Sensors: A Review

Ti3C2 MXene-Based Nanobiosensors for Detection of Cancer Biomarkers

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Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Selective Photocatalytic Activities of Amino Acids/Peptide-Ti₃C₂T_x-TiO₂ Composites Induced by Calcination: Adsorption Enhancement vs Charge Transfer Enhancement

Ti₃C₂ MXene-Based Nanobiosensors for Detection of Cancer Biomarkers