Hydrochar Loaded with Nitrogen-Containing Functional Groups for Versatile Removal of Cationic and Anionic Dyes and Aqueous Heavy Metals DOI Open Access
Yue Zhang, Yongshan Wan, Yulin Zheng

и другие.

Water, Год журнала: 2024, Номер 16(23), С. 3387 - 3387

Опубликована: Ноя. 25, 2024

Developing novel sorbents for effective removal of heavy metals and organic dyes from industrial wastewater remains a central theme water research. We modified hydrochar derived the hydrothermal carbonization wheat straw at 180 °C with 3-Aminopropyl triethoxysilane (APTES) to enhance its versatile adsorption Pb(II), Cu(II), methylene blue (MB), reactive red (Red). Pristine (HyC APTES-HyC) were characterized tested sorption performance. Characterization results revealed an enriched presence N-functional groups, mainly -NH2 C-N, on APTES-HyC, in addition increased specific surface area 1.14 m2/g (HyC) 4.51 m2/g. APTES-HyC exhibited faster rate than HyC, reaching equilibrium approximately 4 h after initiation. The Langmuir capacities 49.6, 14.8, 31.7, 18.3 mg/g MB, Red, respectively, about 8.5, 5.0, 1.3, 9.5 times higher HyC. enhanced performance is attributed which facilitated mechanisms pollutant concern such as formation frustrated Lewis pairs cation–π interactions metal ions π–π hydrogen bond dyes. This study offers facile approach synthesis N-doped carbon materials practical applications.

Язык: Английский

Electrochemical Detection of Bisphenol A Based on Gold Nanoparticles/Multi-Walled Carbon Nanotubes: Applications on Glassy Carbon and Screen Printed Electrodes DOI Creative Commons
Maximina Luis-Sunga, Soledad Carinelli, Gonzalo Garcı́a

и другие.

Sensors, Год журнала: 2024, Номер 24(8), С. 2570 - 2570

Опубликована: Апрель 17, 2024

Bisphenol A (BPA) has been classified as an endocrine-disrupting substance that may cause adverse effects on human health and the environment. The development of simple sensitive electrochemical biosensors is crucial for rapid effective quantitative determination BPA. This work presents a study sensors utilizing gold nanoparticle-modified multi-walled carbon nanotubes (CNT/AuNPs). Glassy electrodes (GCEs) screen-printed (SPEs) were conveniently modified used BPA detection. AuNPs electrodeposited onto CNT-modified using galvanostatic method. properly characterized by Raman spectroscopy, cyclic voltammetry (CV), impedance analysis (EIS). response was studied differential pulse (DPV) constant potential amperometry (CPA) GCE SPE electrodes, respectively, main analytical parameters optimized. Problems encountered with use GCEs, such sensor degradation high limit detection (LOD), overcome SPEs flow injection device measurements. Under this approach, LOD low 5 nM (S/N = 3) achieved presented linear range up to 20 μM. Finally, our investigation addressed interference, reproducibility, reusability aspects, successfully identifying in both spiked authentic samples, including commercial tap waters. These findings underscore practical applicability method accurate real-world scenarios. Notably, integration facilitated simplified automation, offering exceptionally efficient reliable solution precise water laboratories.

Язык: Английский

Процитировано

12

High-performance bimetallic Fe-Co-MOF@MWCNT composite electrochemical sensor for sensitive detection of Pb2+ and Cd2+ DOI

Zerong Liu,

Yanyan Liu,

Lanting Wu

и другие.

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 112813 - 112813

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

2

Breakthroughs in nanostructured-based chemical sensors for the detection of toxic metals DOI Creative Commons

Tinsae F. Gezahegn,

Abera Demeke Ambaye,

Tewolde M. Mekoyete

и другие.

Talanta Open, Год журнала: 2024, Номер 10, С. 100354 - 100354

Опубликована: Сен. 10, 2024

Язык: Английский

Процитировано

8

Nafion/graphite-bismuth nanoplate with a vibration unit for portable heavy metal ion detection DOI
Minwoo Kim,

Chihyun Kim,

Wonjun Jo

и другие.

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 423, С. 136796 - 136796

Опубликована: Окт. 24, 2024

Язык: Английский

Процитировано

7

Simultaneous detection of heavy metal ions in food samples using a hypersensitive electrochemical sensor based on APTES-incubated MXene- NH2@CeFe-MOF-NH2 DOI
Yingkun Shi, Fujia Dong, Argenis Rodas‐González

и другие.

Food Chemistry, Год журнала: 2025, Номер 475, С. 143362 - 143362

Опубликована: Фев. 11, 2025

Язык: Английский

Процитировано

1

Electrochemical Detection of Dopamine with a Non-Enzymatic Sensor Based on Au@SiO2-APTES Composite DOI Creative Commons

Afef Dhaffouli,

Pedro Salazar, Soledad Carinelli

и другие.

Chemosensors, Год журнала: 2025, Номер 13(3), С. 87 - 87

Опубликована: Март 3, 2025

A novel material composed of Au@SiO2-(3-Aminopropyl Triethoxysilane) (Au@SiO2-APTES) was successfully synthesised using the sol–gel method, and used to modify glassy carbon electrodes. Its effectiveness as a molecular recognition element is evaluated in design an electrochemical sensor for precise detection dopamine. The Au@SiO2-APTES composite analysed Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray diffraction. Elemental analysis verified presence oxygen, silicon, gold, with atomic percentages around 77.19%, 21.12%, 1.65%, respectively. corresponding elemental mapping showed that spatial distribution all elements fairly homogeneous throughout composite, indicating Au NPs are embedded silica structures. Traces dopamine were detected by differential pulse voltammetry low limit (S/N = 3) quantification 10) 1.4 × 10−8 molL−1 4.7 molL−1, had two linear ranges: from 1 10−7 1.25 8.75 molL−1. Moreover, outstanding selectivity even various potential interfering species. It also demonstrated good reusability signal recovery when tested human urine plasma samples spiked different concentrations. sensor, constructed this material, shows great promise selective sensitive biological matrix. These results underscore sensor’s capability practical application analysing real-world samples.

Язык: Английский

Процитировано

1

Enhanced foam fractionation of perfluorooctane sulfonate (PFOS) from water using amphiphilic Janus SiO2 nanoparticles DOI
Nan Hu, Zhirong Zhang, Qi Wang

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 155829 - 155829

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

6

Compensation for Matrix Effects in High-Dimensional Spectral Data Using Standard Addition DOI Creative Commons
Elena Vervitski, Israël Schechter, Itai Dattner

и другие.

Sensors, Год журнала: 2025, Номер 25(3), С. 612 - 612

Опубликована: Янв. 21, 2025

The standard addition method is widely used in analytical chemistry to compensate for matrix effects. While effective with single signals (e.g., absorbance at a wavelength) and independent of composition or blank measurements, it has limitations high-dimensional data full spectra). Existing methods require knowledge the restricting their applicability. We propose novel algorithm that works without requiring measurements. By modifying experimental spectra) before applying chemometric models, accurately determines analyte concentrations even complex matrices like seawater food, where blanks are unavailable. A performance evaluation shows compensates effectively effects, outperforms previously published algorithms direct applications multivariate algorithms, robust variations SNR effect intensity.

Язык: Английский

Процитировано

0

Ultrasensitive CEA detection using SiO2/AuNPs-mediated dual inhibition in a signal-off-type photoelectrochemical immunosensor DOI

Yueyuan Cai,

Zhaoshun Bi,

Xinming Geng

и другие.

Analytica Chimica Acta, Год журнала: 2025, Номер unknown, С. 343745 - 343745

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Inhalable pH-responsive core-shell nanocarriers with PEGylated chitosan/alginate layer-by-layer coating for sequential drug release in lung cancer therapy DOI

Mariam Hossam Eldin,

Reem K. Arafa,

Osman Gamal

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 141851 - 141851

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0