Current potentiometric Cu sensors mostly rely on polymer-membrane-based solid-contact ion-selective electrodes (SC-ISEs) that constitute ion-selective membranes (ISM) and solid contact (SC) for respective ion recognition and ion-to-electron transduction. Herein, we report an ISM-free Cu-SC-ISE based on Cu-Mn oxide (CuMnO) as a bifunctional SC layer. The starting point is simplifying complex multi-interfaces for Cu-SC-ISEs. Specifically, ion recognition and signal transduction have been achieved synchronously by an ion-coupled-electron transfer of crystal ion transport and electron transfer of Mn in CuMnO. The proposed CuMnO electrode discloses comparable sensitivity, response time, high selectivity and stability compared with present ISM-based potentiometric Cu sensors. In addition, the CuMnO electrode also exhibits near Nernstian responses toward Cu in natural water background. This work emphasizes an ISM-free concept and presents a scheme for the development of potentiometric Cu sensors.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.talanta.2024.125993 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Carbon-based light addressable potential aptasensor based on the synergy of C-MXene@rGO and OPD@NGQDs for low-density lipoprotein detection.
Mikrochim Acta
December 2024
School of Life and Environmental Sciences, School of Intellectual Property, Guilin University of Electronic Technology, Guilin, Guangxi, 541004, People's Republic of China.
A novel carbon-based light-addressable potentiometric aptasensor (C-LAPS) was constructed for detection low-density lipoprotein (LDL) in serum. Carboxylated TiC MXene @reduced graphene oxide (C-MXene@rGO) was used as interface and o-phenylenediamine functionalized nitrogen-doped graphene quantum dots (OPD@NGQDs) as the photoelectric conversion element. The photosensitive layers composed of OPD@NGQDs/C-MXene@rGO exhibit superior photoelectric conversion efficiency and excellent biocompatibility, which contribute to an improved response signal.
View Article and Find Full Text PDFSensitivity-enhanced potentiometric measurement by incorporating graphitic carbon nitride into the ion-to-electron transducer of potassium ion-selective electrodes.
Anal Sci
December 2024
Jiangsu Collaborative Innovation Centre on Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, 219 Ningliu Road, Nanjing, 210044, China.
In recent years, wearable sweat sensors have garnered significant attention for real-time monitoring of human physiological information because of their ability to continuously and non-invasively detect multiple sweat biomarkers. Among these, potentiometric sensors stand out for their low power consumption, low cost, compact design, and real-time monitoring capabilities, making them an ideal alternative for sweat analysis. However, enhancing the sensitivity of ion-selective electrodes (ISEs), a critical parameter of potentiometric sensors, remains a challenging research focus.
View Article and Find Full Text PDFNanomolar detection of lurasidone hydrochloride in pharmaceutical formulations (Serodopamoun®) and spiked urine using a PVC/imprinted polymer/MWCNTs layer deposited onto polyaniline-coated screen-printed electrodes.
RSC Adv
December 2024
Department of Chemistry, Faculty of Science, Cairo University 12613 Giza Egypt
This study developed potentiometric sensors for detecting lurasidone HCl (LSH), a vital drug for treating schizophrenia and bipolar I disorder, in pharmaceutical formulations and biological samples. The sensors are based on screen-printed electrodes (SPE) modified with a molecularly imprinted polymer (MIP) synthesized using lurasidone as a template, 1-vinyl-2-pyrrolidine (VP) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinker, and benzoyl peroxide as an initiator. The SPE was further modified with a conductive polyaniline (PANI) film and a polyvinyl chloride (PVC) layer containing MIP as an ionophore and multiwalled carbon nanotubes (MWCNT) as a transducing material along with 2-nitrophenyl octyl ether (2-NPOE) as plasticizer.
View Article and Find Full Text PDFCandle soot-smoked electrodes as a natural superhydrophobic material for potentiometric sensors.
Talanta
December 2024
Faculty of Materials Science and Ceramics, AGH University of Krakow, Mickiewicza 30, PL-30059, Krakow, Poland. Electronic address:
The application of carbon soot as a solid-contact layer in potentiometric sensor is presented. The preparation method of carbon layer from the candle is inexpensive and as short as 10 s and was optimized and described in the scope of this paper. With the use of the proposed procedure, it is possible to cover not only the glassy carbon disc electrodes, but all surfaces of various shapes and types, like foil or paper.
View Article and Find Full Text PDFImproved Sensitivity of a Taste Sensor Composed of Trimellitic Acids for Sweetness.
Molecules
November 2024
Research and Development Center for Five-Sense Devices, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
Currently, lipid/polymer membranes are used in taste sensors to quantify food taste. This research aims to improve sweetness sensors by more selectively detecting uncharged sweetening substances, which have difficulty obtaining a potentiometric response. Lipid/polymer membranes with varying amounts of tetradodecylammonium bromide (TDAB) and 1,2,4-benzene tricarboxylic acid (trimellitic acid) were prepared.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!