Results 21 to 30 of about 2,217 (192)

Study of the mechanism of nitrophenols sorption on expanded perlite ‒ equilibrium and kinetics modelling

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2012
The adsorption behavior of 2-nitrophenol (2-NP) and 2,4-dinitrophenol (2,4-DNP) on expanded perlite (EP) at equilibrium and kinetic conditions was investigated. The experimental equilibrium data were interpreted by Langmuir, Freundlich, Redlich–Peterson,
Zvezdana Yaneva   +2 more
doaj   +1 more source

One-pot and metal-free synthesis of 3-arylated-4-nitrophenols via polyfunctionalized cyclohexanones from β-nitrostyrenes

open access: yesBeilstein Journal of Organic Chemistry, 2020
β-Nitrostyrenes underwent a Diels–Alder reaction with Danishefsky’s diene to afford cyclohexenes together with the corresponding hydrolyzed products, 3-arylated-5-methoxy-4-nitrocyclohexanones.
Haruyasu Asahara   +2 more
doaj   +1 more source

3D-printed nanocarbon sensors for the detection of chlorophenols and nitrophenols: Towards environmental applications of additive manufacturing

open access: yesElectrochemistry Communications, 2021
3D printing is a manufacturing technique used to prototype devices with customized shapes composed of different materials, including carbon composites. Toxic phenolic compounds are a major environmental hazard.
Jyoti   +3 more
doaj   +1 more source

A Voltammetric Electronic Tongue for the Resolution of Ternary Nitrophenol Mixtures

open access: yesSensors, 2018
This work reports the applicability of a voltammetric sensor array able to quantify the content of 2,4-dinitrophenol, 4-nitrophenol, and picric acid in artificial samples using the electronic tongue (ET) principles.
Andreu González-Calabuig   +2 more
doaj   +1 more source

Electrocatalytic C─N Coupling in Aqueous Solutions for High‐Value Product Synthesis

open access: yesAngewandte Chemie, EarlyView.
Electrocatalytic C–N coupling offers a sustainable route to synthesize crucial organic nitrogen compounds from abundant feedstocks under mild conditions. This review examines recent progress in overcoming key challenges, like slow kinetics and competing reactions through advanced catalysts and novel mechanisms, paving the way for transforming chemical ...
Yunpeng Zuo   +3 more
wiley   +2 more sources

Method for the determination of concentration and stable carbon isotope ratios of atmospheric phenols [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
A method for the determination of the stable carbon isotopic composition of atmospheric nitrophenols in the gas and particulate phases is presented. It has been proposed to use the combination of concentration and isotope ratio measurements of precursor ...
M. Saccon   +7 more
doaj   +1 more source

Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems

open access: yesAdvanced Functional Materials, EarlyView.
MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley   +1 more source

Voltammetric Electronic Tongue for the Resolution of Ternary Nitrophenol Mixtures

open access: yesProceedings, 2017
Nitrophenols have been widely employed in different applications from explosives to weight loss drugs but the main environmental problem is their generation as degradation products of common herbicides [1,2]. [...]
Andreu González-Calabuig   +2 more
doaj   +1 more source

Toxic phenolic compounds in the Egyptian coastal waters of Alexandria:spatial distribution,source identification,and ecological risk assessment

open access: yesWater Science, 2022
Poor published data are available for the detections of toxic phenolic compounds in the Egyptian Mediterranean Coast. Seasonal and spatial distributions of eight driven toxic phenolic compounds in coastal waters of Alexandria from ten different locations,
Naglaa A. El-Naggar   +2 more
doaj   +1 more source

4-Dimethylaminopyridinium–4-nitrophenolate–4-nitrophenol (1/1/1)

open access: yesActa Crystallographica Section E Structure Reports Online, 2003
Within and between mol­ecules of the title compound, C7H11N2+·C6H5NO3−·C6H4NO3, there are C—H⋯O, C—H⋯N, O—H⋯O and N—H⋯O interactions, which generate rings of graph-set motifs S(5), R12(5), R12(6), R12(7) and R21(4). The supramolecular aggregation is completed by the presence of three different π–π interactions and short van der Waals contacts.
Nagarajan Vembu   +3 more
openaire   +1 more source

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