Results 41 to 50 of about 163,771 (279)

Adsorptive Cathodic Stripping Voltammetric Determination of Cefoperazone in Bulk Powder, Pharmaceutical Dosage Forms, and Human Urine

Journal of Analytical Methods in Chemistry, 2013
The electroreduction behaviour and determination of cefoperazone using a hanging mercury drop electrode were investigated. Cyclic voltammograms of cefoperazone recorded in universal Britton-Robinson buffers pH 3–6 exhibited a single irreversible cathodic
Vu Dang Hoang, Dao Thi Huyen, Phan Hong Phuc   +2 more
doaj   +1 more source

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Recent Approaches for Chemical Speciation and Analysis by Electrospray Ionization (ESI) Mass Spectrometry

Frontiers in Chemistry, 2021
In recent years, the chemical speciation of several species has been increasingly monitored and investigated, employing electrospray ionization mass spectrometry (ESI-MS).
Serena Indelicato, David Bongiorno, Leopoldo Ceraulo   +2 more
doaj   +1 more source

Electron‐Deficient Linkers Enhance H2O2 Electrosynthesis in Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
Linker π‐conjugation modulates the electronic state of the Ni–N4 centers and their interaction with the key *OOH intermediate while preserving the primary coordination motif. NiPc‐PTDA delivers an H2O2 selectivity of 92% and a production rate of 34.8 mol gcat−1 h−1, highlighting linker electronic properties as a molecular design parameter for NiPc ...
Houting Xie, Rui Guo, Zhen Liu, Yang Hu, Laichun Zhao, Omid Mazaheri, Bufeng Zhang, Shuaijun Pan   +7 more
wiley   +1 more source

Determination of the phthalocyanine textile dye, reactive turquoise blue, by electrochemical techniques

Journal of the Brazilian Chemical Society, 2003
Turquoise blue 15 (AT15) is a reactive dye widely used in the textile industry to color natural fibers. The presence of these dyes in effluent and industrial wastewater is of considerable interest due ecotoxicological and environmental problems.
Osugi Marly E., Carneiro Patrícia A., Zanoni Maria Valnice B.   +2 more
doaj  

Sensitive Bioanalysis Based on in-Situ Droplet Anodic Stripping Voltammetric Detection of CdS Quantum Dots Label after Enhanced Cathodic Preconcentration

Sensors, 2016
We report a protocol of CdS-labeled sandwich-type amperometric bioanalysis with high sensitivity, on the basis of simultaneous chemical-dissolution/cathodic-enrichment of the CdS quantum dot biolabel and anodic stripping voltammetry (ASV) detection of Cd
Xiaoli Qin, Linchun Wang, Qingji Xie
doaj   +1 more source

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

Stereometric Molecular Engineering for Ultra‐Stable Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
Stereochemical configuration of molecular additives greatly influences interfacial adsorption at the Zn surface. The optimal tilted dual‐anchored adsorption geometry of myo‐inositol constructs a water‐deficient interface and regulates the solvation structure.
Cunxin Liu, Peng Yang, Mohamed H. Helal, Jiang Zhou, Eero Kontturi   +4 more
wiley   +1 more source

New Cyanide-Free Ammonia Bath for Brass Alloy Coatings on Steel Substrate by Electrodeposition

International Journal of Electrochemical Science, 2015
The electrodeposition of highly adherent brass alloy coating onto steel substrate was successfully achieved using a cyanide-free ammonia solution. Ammonia solution forms soluble complexes with both Zn2+ and Cu2+ ions with high stability constants.
Magdy A.M. Ibrahim, Rashed S. Bakdash
doaj   +1 more source

Determination of Trace Lead in Copper by Cathodic Stripping Voltammetry

Analytical Sciences, 1996
A simple, rapid and sensitive method based on catholic stripping voltammetry without preliminary separation of the copper matrix is described for the determination of lead at the μg g-1 level in copper. The sample was decomposed with nitric acid (2+1), and sodium hydroxide was added to prepare a 1M sodium nitrate electrolyte at pH 2.0. More than 35% of
ISHIYAMA, Takashi, ABE, Ken-ichiro, TANAKA, Tatsuhiko, MIZUIKE, Atsushi   +3 more
openaire   +2 more sources