Results 101 to 110 of about 162,244 (295)

Comparison of Polyacrylonitrile-and Polypyrrole-based Electrochemical Sensors for Detection of Propamocarb in Food Samples

Journal of the Turkish Chemical Society, Section A: Chemistry, 2022
Food safety is a crucial issue; all countries have struggled against pesticides for years. In this study, Polypyrrole (PPy)- and Polyacrylonitrile (PAN)-based non-enzymatic electrochemical sensors were investigated to detect the pesticide propamocarb (PM)
Selcan KARAKUŞ, Cihat TASALTIN, İlke GÜROL, Barbaros AKKURT, Gülsen BAYTEMİR, Nevin TAŞALTIN   +5 more
doaj   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

A Nanodiamond-Based Electrochemical Sensor for the Determination of Paracetamol in Pharmaceutical Samples

Chemosensors
This study presents an electrochemical sensor developed from a glassy carbon electrode modified with nanodiamond film (ND/GCE). This electrochemical response of the proposed sensor was improved, and it showed excellent analytical performance for the ...
Déborah de Oliveira Lopes, Felipe Magalhães Marinho, Patricia Batista Deroco, Amanda Neumann, Jessica Rocha Camargo, Rafaela Cristina de Freitas, Lucas Ventosa Bertolim, Orlando Fatibello Filho, Bruno Campos Janegitz, Geiser Gabriel de Oliveira   +9 more
doaj   +1 more source

Reduced Graphene Oxide-Doped Poly(N-alkyl-3,4-dihydrothieno[3,4-b][1,4]oxazine) with High Sensitivity of Indole-3-Acetic Acid

International Journal of Electrochemical Science, 2018
A highly sensitive electrochemical sensor for detecting indole-3-acetic acid (IAA) was constructed based on the composite of poly(N-methyl-3,4-dihydrothieno[3,4-b][1,4]oxazine) (PMDTO) and reduced graphene oxide (RGO) (PMDTO/RGO).
Kai Qu, Shouli Ming, Haiyan Jia, Bin Guo, Ximei Liu, Nannan Jian, Guifang Niu, Baoyang Lu, Jingkun Xu   +8 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Electrochemical Detection of 4-p-nitrophenol Based on TiO2NPs / RGO / AuNPs Composite Modified Glassy Carbon Electrode

International Journal of Electrochemical Science, 2018
A glassy carbon electrode modified with TiO2NPs/RGO/AuNPs was used as an electrochemical sensor to detect trace amounts of 4-p-nitrophenol (4-NP). The surface morphology of the composites was characterized by field-emission scanning electron microscopy ...
Yongqiang Cheng, Linna Jiu, Kai Zhuo, Zhongyun Yuan, Qiang Zhang, Shengbo Sang   +5 more
doaj   +1 more source

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

Advanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing, Abdulrahman Mohabbat, István Boldog, Jens Möllmer, Marcus Lange, Yulyan Haiduk, Tobias Heinen, Vladimir Pankov, Oliver Weingart, Christoph Janiak   +9 more
wiley   +1 more source

Phosphate Contaminant Detection in Water Through a Paper-based Microfluidic Device [PDF]

, 2017
This report describes a project aimed at developing a low-cost, portable, on-site, user-friendly system for detecting different concentrations of phosphate in drinking water.
Miura, Brandon, Wagner, Alex, Wu, Philip
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Graphene-Gold Nanoparticles Nanohybrids for Electrochemical Detection of Malachite Green

International Journal of Electrochemical Science, 2017
Malachite green (MG) was an important bactericide and is now banned in different countries due to it’s bad effect to human health. In this work, graphene-gold nanohybrids (Graphene-GNPs) were prepared by the chemical co-reduction of Au (III) and graphene
Xiu-Chun Guo, Xuan Cao, Hai-Hui Wang, Meng Yuan, Xuan-Jie Chen, Wen-Yi Kang, Wen-Hui Zhou   +6 more
doaj   +1 more source