Electrochemical activation of oxygen vacancy-rich TiO2@MXene as high-performance electrochemical sensing platform for detecting imidacloprid in fruits and vegetables

Article Chemistry, Applied

Ultrasensitive indirect electrochemical sensing of thiabendazole in fruit and water by the anodic stripping voltammetry of Cu2+ with hierarchical Ti3C2Tx-TiO2 for signal amplification

Wei Zhong et al.

Summary: In this study, a novel electrochemical sensing strategy for the indirect detection of thiabendazole (TBZ) was developed. The sensing platform showed satisfactory analytical performance and potential application in food safety.

FOOD CHEMISTRY (2023)

Add to Collection

Article Chemistry, Analytical

Prussian blue analogues based polymer monolith with amphiphilic interface to construct highly selective and sensitive imidacloprid chemosensor

Fengya Wang et al.

Summary: This study presents a novel chemosensor system and polymer materials for highly sensitive detection of imidacloprid pesticide. The all-in-one functional material combines an active polymer monolith for enrichment and catalytic degradation with sensitive detection of pesticides. This method has the potential to be used for the development of a range of pesticide chemical sensing methods in the future.

TALANTA (2023)

Add to Collection

Article Chemistry, Multidisciplinary

Microporous carbon for fast and simple electrochemical detection of imidacloprid insecticide in fruit and water samples

Keerakit Kaewket et al.

Summary: A fast and sensitive electrochemical sensor using low-cost microporous carbon screen-printed electrodes was developed for imidacloprid detection. The sensor demonstrated excellent selectivity, tolerance to interference, repeatability, and reproducibility. Application of the sensor in fruit and water samples showed high recoveries, with the most effective method for removing imidacloprid residue from fruit samples being washing with a mixture of 5% w/v NaCl and 5% w/v bicarbonate at 40 degrees C.

RSC ADVANCES (2023)

Add to Collection

Article Environmental Sciences

Tuning of (E)-(4-fluorophenyl)-1,1-diamino-2,3-diazabuta-1,3-diene nanostructures for the selective detection of imidacloprid

Monika Bhattu et al.

Summary: This study demonstrates a simple method for synthesizing organic nanoparticles (ONPs) and blue fluorescent Quantum Dots (QDs) with potential applications in pesticide sensing. The synthesized QDs show selective sensing potential towards imidacloprid and exhibit a good linear response within a certain concentration range.

ENVIRONMENTAL RESEARCH (2023)

Add to Collection

Article Chemistry, Analytical

Highly sensitive and specific determination of imidacloprid pesticide by a novel Fe3O4@SiO2@MIPIL fluorescent sensor

Wei Xie et al.

Summary: In this study, a magnetic Fe3O4@SiO2@MIPIL fluorescent sensor with high sensitivity and specificity was prepared using surface molecular imprinting technology. The sensor showed rapid quenching of fluorescence in the presence of imidacloprid (IMD) and exhibited a linear relationship within a wide concentration range. It was successfully applied for the detection of IMD in environmental water and food samples.

ANALYTICA CHIMICA ACTA (2022)

Add to Collection

Article Chemistry, Physical

Toward understanded the electrochemical capacitance mechanism of MXene by intercalation of inorganic ions and organic macromolecular ions

Yuxuan Zhang et al.

Summary: In this study, MXene was modified with inorganic ions (NaCl) and organic macromolecular ions (CTAB) using ion ultrasonic intercalation. It was found that MXene-CTAB exhibited higher specific capacitance and better cycle stability compared to MXene-NaCl, mainly due to the ability of CTAB to expand the layer spacing of MXene and provide additional pseudocapacitance.

APPLIED SURFACE SCIENCE (2022)

Add to Collection

Article Biophysics

Non-invasive electrochemical immunosensor for sweat cortisol based on L-cys/AuNPs/MXene modified thread electrode

Thidarut Laochai et al.

Summary: In this study, a thread-based electrochemical immunosensor was fabricated for non-invasive detection of cortisol in sweat. The sensor demonstrated high sensitivity, wide linear range, and low detection limit. It also exhibited good reproducibility and long-term storage stability. Furthermore, by integrating the electrochemical sensor on a wristband, it can serve as a portable tool for monitoring sweat cortisol.

BIOSENSORS & BIOELECTRONICS (2022)

Add to Collection

Article Food Science & Technology

Development of a label-free electrochemical aptasensor for ultrasensitive detection of ochratoxin A

Yujiao Hou et al.

Summary: This study developed a conveniently fabricated label-free electrochemical aptasensor for ultrasensitive detection of ochratoxin A (OTA) in food. The aptasensor showed high sensitivity and specificity, with a linear relationship between resistance and OTA concentration. The sensor exhibited promising practical applications in food control for identifying hazardous contaminants.

FOOD CONTROL (2022)

Add to Collection

Article Chemistry, Analytical

Engineering Co2+/Co3+ redox activity of Ni-mediated porous Co3O4 nanosheets for superior Hg(II) electrochemical sensing: Insight into the effect of valence change cycle and oxygen vacancy on electroanalysis

Shan-Shan Li et al.

Summary: Transition metal oxides (TMOs) have been recognized as promising sensing materials for heavy metal ions (HMIs) detection, mainly due to strong adsorption of HMIs on surface oxygen vacancies (OVs) of TMOs. However, the role of valence change induced redox activity of TMOs in HMIs detection has not received sufficient attention, hindering further development. This study proposes a facile strategy to co-engineer the redox activity and surface OVs of porous Co3O4 nanosheets by Ni doping, achieving enhanced redox activity and adsorption simultaneously. The results demonstrate that the valence change cycle of Co cations plays a more important role in electrochemical detection than the adsorption of Hg(II) on OVs, and Ni-doping facilitates this valence change cycle. This work provides a feasible way to develop TMOs-based sensing materials by synergizing their redox activity and adsorption ability towards HMIs.

SENSORS AND ACTUATORS B-CHEMICAL (2022)

Add to Collection

Article Chemistry, Physical

Unravelling the synergy of oxygen vacancies and gold nanostars in hematite for the electrochemical and photoelectrochemical oxygen evolution reaction

Hao Zhang et al.

Summary: In this study, a dual-functional catalyst based on hematite was developed for both EC and PEC water oxidation in alkaline media. The catalyst exhibited excellent activity and stability on both EC and PEC, and showed superior electrocatalytic performance for OER. The addition of gold nanoparticles on the hematite improved the adsorption strength of oxygen-containing intermediates and increased the OER activity.

NANO ENERGY (2022)

Add to Collection

Article Chemistry, Analytical

Electrochemical sensor for imidacloprid detection based on graphene oxide/gold nano/β-cyclodextrin multiple amplification strategy

Jinmei Luo et al.

Summary: This study proposes a new strategy for preparing electrochemical sensors with multiple amplification effects, which successfully detects imidacloprid. By introducing graphene oxide, gold nanoparticles, and beta-cyclodextrin, the prepared sensor exhibits high sensitivity and detection limit, achieving good recovery rates in actual samples.

MICROCHEMICAL JOURNAL (2022)

Add to Collection

Article Materials Science, Multidisciplinary

3D prickle-like hierarchical NiO nanostructures with oxygen vacancies for electrochemical detection of enrofloxacin antibiotics

Jai Kumar et al.

Summary: This study successfully improved the electrochemical performance of NiO nanostructures by introducing oxygen vacancies, enabling efficient detection and monitoring of enrofloxacin antibiotics.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2022)

Add to Collection

Article Chemistry, Applied

NiCu nanoalloy embedded in N-doped porous carbon composite as superior electrochemical sensor for neonicotinoid determination

Hui Zhangsun et al.

Summary: In this study, a novel electrochemical sensor was developed using a MOF-derived nanoporous carbon composite as the catalyst for the determination of neonicotinoids. The sensor exhibited a wide linear range and low detection limits, and could accurately detect the target compounds in fruits and vegetables.

FOOD CHEMISTRY (2022)

Add to Collection

Review Chemistry, Analytical

Ligand chemistry of gold, silver and copper nanoparticles for visual read-out assay of pesticides: A review

Vaibhavkumar N. Mehta et al.

Summary: Metal nanoparticles have shown significant potential in enhancing the sensitivity of UV -Visible spectrometry and can be used for miniaturized colorimetric assay of various molecules. The interaction between metal nanoparticles and trace level pesticides can induce aggregation and cause noticeable color changes. This review summarizes the role of ligand chemistry on metal nanoparticles for colorimetric detection of pesticides and discusses the challenges and future perspectives.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2022)

Add to Collection

Article Engineering, Environmental

Highly sensitive and selective electrochemical sensor for detecting imidacloprid pesticide using novel silver nanoparticles/mesoporous carbon/hematite ore ternary nanocomposite

Md. A. Rashed et al.

Summary: In this study, an electrochemical sensor based on a nanocomposite is reported for the sensitive and selective detection of the pesticide Imidacloprid. The sensor, constructed using Ag nanoparticles deposited on mesoporous carbon and naturally extracted hematite ore, exhibits excellent sensing performance with a wide linear detection range, high sensitivity, and low detection limit. The sensor electrode based on the Ag@Meso-C/Hematite Ore nanocomposite also demonstrates unique selectivity behavior and good reproducibility, repeatability, and storage stability. This sensing system, based on naturally occurring hematite ore, provides a sensitive approach for the detection of various target analytes in chemical sensing studies.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

Add to Collection

Article Chemistry, Analytical

A novel electrochemiluminescence sensor based on a molecular imprinting technique and UCNPs@ZIF-8 nanocomposites for sensitive determination of imidacloprid

Feiyan Tang et al.

Summary: This study reports a sensitive electrochemiluminescence sensor based on upconverting nanoparticle functional zeolite imidazolate framework and molecularly imprinted polymers, which can successfully achieve quantitative detection of IM. The sensor exhibits outstanding ECL performance and can be applied for determining IM concentration levels in food.

ANALYST (2022)

Add to Collection

Article Chemistry, Physical

Multilayer activated biochar/UiO-66-NH2 film as intelligent sensing platform for ultra-sensitive electrochemical detection of Pb2+ and Hg2+

Jin Zou et al.

Summary: A novel electrochemical sensor based on multilayer activated biochar and metal-organic frameworks successfully achieved simultaneous detection of Pb2+ and Hg2+ in water samples with a low detection limit. Integration with an artificial neural network system enables accurate prediction of Pb2+ and Hg2+ concentrations in water samples, showing high correlation with experimental results and promising applications for sensing analysis.

APPLIED SURFACE SCIENCE (2021)

Add to Collection

Article Chemistry, Physical

Polydopamine bridged MXene and NH2-MWCNTs nanohybrid for high-performance electrochemical sensing of Acetaminophen

Shuxian Chen et al.

Summary: The MXene/MWCNTs nanohybrid is considered an ideal electrode material due to its unique structure and properties. A novel approach was developed to cross-link amino functionalized multi-carbon nanotubes onto polydopamine functionalized MXene, resulting in a composite with hierarchical structure, large specific surface area, good conductivity and electrocatalytic ability. The modified electrode showed excellent sensing performance for acetaminophen detection with good linear response, low detection limit, reproducibility, selectivity, and stability. This method was successfully applied to detect acetaminophen in actual samples.

APPLIED SURFACE SCIENCE (2021)

Add to Collection

Article Chemistry, Applied

Competitive immunosensor for sensitive and optical anti-interference detection of imidacloprid by surface-enhanced Raman scattering

Yue Sun et al.

Summary: A nitrile-mediated SERS immunosensor was developed for sensitive and optical anti-interference determination of imidacloprid in complex environments. Specific recognition between antigen and antibody enabled the competitive system for imidacloprid detection with high recoveries in real samples.

FOOD CHEMISTRY (2021)

Add to Collection

Article Chemistry, Physical

Photocatalytic and bactericidal properties of MXene-derived graphitic carbon-supported TiO2 nanoparticles

Krishnamoorthy Rajavel et al.

Summary: The study established a highly reactive catalyst derived from Ti3C2Tx (MXene) for photocatalytic and bacteriostatic applications. The hybrid nanostructures demonstrated superior catalytic performance and antibacterial activity under light exposure, making them promising materials for such applications.

APPLIED SURFACE SCIENCE (2021)

Add to Collection

Article Chemistry, Physical

Leaf-like MXene nanosheets intercalated TiO2 nanorod array photoelectrode with enhanced photoelectrochemical performance

Sainan Zhang et al.

Summary: A new Ti3C2/TiO2 composite photoanode material was fabricated, showing enhanced photoelectrochemical water splitting performance and improved efficiency in separating electrons and holes.

JOURNAL OF POWER SOURCES (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Structural Engineering of Hollow Microflower-like CuS@C Hybrids as Versatile Electrochemical Sensing Platform for Highly Sensitive Hydrogen Peroxide and Hydrazine Detection

Xiaoqing Ma et al.

Summary: The research explores the use of hollow microflower-like CuS@C hybrids as a versatile electrochemical sensing platform for H2O2 reduction and N2H4 oxidation, demonstrating wide linear range and low detection limit. Elaborate strategies were employed to achieve the desired performance, such as the perfect formation of hollow architecture and the introduction of polydopamine-derived carbon skeleton.

ACS APPLIED MATERIALS & INTERFACES (2021)

Add to Collection

Article Chemistry, Analytical

A facile, inexpensive and green electrochemical sensor for sensitive detection of imidacloprid residue in rice using activated electrodes

Yitao Lv et al.

Summary: Sensitive and cost-effective sensors for monitoring imidacloprid residue were developed through electrochemical activation, amplifying the electro-reduction response by nearly 16 times and achieving a low limit of detection for IDP. The potential of the proposed activated electrodes for application in rice samples was verified through methodological evaluation.

ANALYTICAL METHODS (2021)

Add to Collection

Article Chemistry, Analytical