Results 11 to 20 of about 5,457 (167)

Efficient flat membrane based liquid phase microextraction of cathinones from environmental water and biological samples

Talanta Open, 2023
Cathinone drugs are one kind of new psychoactive substances, which are widely acknowledged to be harmful. Thus, rapid and efficient extraction of cathinone drugs from biological materials is of great importance in the field of forensic medicine and ...
Changbao Hong, Yibo Yan, Yahui Tu, Chuixiu Huang   +3 more
doaj   +1 more source

Ultrasound/chlorine sono-hybrid-advanced oxidation process: Impact of dissolved organic matter and mineral constituents

Ultrasonics Sonochemistry, 2022
In this work, after exploring the first report on the synergism of combining ultrasound (US: 600 kHz) and chlorine toward the degradation of Allura Red AC (ARAC) textile dye, as a contaminant model, the impact of various mineral water constituents (Cl ...
Oualid Hamdaoui, Slimane Merouani, Meriem Ait Idir, Hadjer C. Benmahmoud, Aissa Dehane, Abdulaziz Alghyamah   +5 more
doaj   +1 more source

Smart Materials for Environmental Remediation Based on Two-Component Gels: Room-Temperature-Phase-Selective Gelation for the Removal of Organic Pollutants Including Nitrobenzene/O-Dichlorobenzene, and Dye Molecules from the Wastewater

Nanoscale Research Letters, 2019
Novel two-component gel systems based on aliphatic acid–hydroxy/base interaction were developed as smart materials for environmental remediation.
Jing Zhang, Jiahui Liu, Ciqing Tong, Shipeng Chen, Baohao Zhang, Bao Zhang, Jian Song   +6 more
doaj   +1 more source

Self-Assembly and Cascade Catalysis by a Soft-Oxometalate (SOM) System

Frontiers in Chemistry, 2020
Cascade catalysis has gained importance due to its various applications. In this work, cascade catalysis was performed using a self-assembled soft-oxometalate (SOM) as a model system.
Kousik Das, Tingting Yan, Shounik Paul, Shilun Qiu, Teng Ben, Soumyajit Roy   +5 more
doaj   +1 more source

Tailoring High‐Valent Iron‐Oxo Species Redox via Extended π‐Fe3d–O2p Orbital Overlapping Toward Chemical‐Efficient Water Purification

Angewandte Chemie, EarlyView.
We address the long‐standing challenge of reactivity–selectivity trade‐off by precisely tuning the redox properties of Fe(IV), rather than simply accelerating its formation, to enable chemically efficient and low‐emission water treatment. ABSTRACT High‐valent iron oxo species (Fe(IV)) are attractive for wastewater treatment because of their high ...
Hongyu Zhou, Junwen Chen, Jiuyi Wang, Xinhao Wang, Qiming Zhang, Shiying Ren, Xuning Li, Li Gao, Shaobin Wang, Xiaoguang Duan   +9 more
wiley   +2 more sources

Positive Electrochemical Potentials Induce Enhanced Chemoselectivity and Activity in the Thermocatalytic Hydrogenation of 3‐Nitrostyrene

Angewandte Chemie, EarlyView.
Induced by positive electrochemical potentials, thermocatalytic hydrogenation (TCH) of 3‐nitrostyrene with H2 delivers one single product with six‐fold enhanced yield. The enhanced selectivity and activity originate from changes in the adsorption geometry of 3‐nitrostyrene and in the surface concentration of 3‐nitrostyrene and hydrogen via a concurrent
Yunfei Jiao, Martina A. Pogany, Murielle F. Delley   +2 more
wiley   +2 more sources

Sustainable Pd‐Catalyzed Aminations “on Dirty Water”

Angewandte Chemie, EarlyView.
Aminations, done safely yet neat, and therefore, quickly, using low levels of Pd, in “dirty water” that must contain 30% KOH; not NaOH, and not at 5%,10%, 20%, 40%, or 50% KOH. Moreover, no base sensitivity of functional groups! Very cool. Thank you, Nature.
Erfan Oftadeh, Marco Ortiz, Kylee Dismuke Rodriguez, Jonathan Yang, Bruce H. Lipshutz   +4 more
wiley   +2 more sources

Direct Observation of Chemical Oscillation at a Water/Nitrobenzene Interface with a Sodium-alkyl-sulfate System

Analytical Sciences, 2004
The oscillation of the interfacial tension and electrical potential at a water/nitrobenzene interface was observed with homologous anionic surfactant molecules, sodium-alkyl-sulfates. Concerning small molecules with a short hydrophobic carbon chain, the oscillation period and amplitude decreased with a decrease of the length of the alkyl chain.
IKEZOE, Yasuhiro, ISHIZAKI, Sadahiro, YUI, Hiroharu, FUJINAMI, Masanori, SAWADA, Tsuguo   +4 more
openaire   +3 more sources

Identification and Quantification of Explosives in Nanolitre Solution Volumes by Raman Spectroscopy in Suspended Core Optical Fibers

Sensors, 2013
A novel approach for identifying explosive species is reported, using Raman spectroscopy in suspended core optical fibers. Numerical simulations are presented that predict the strength of the observed signal as a function of fiber geometry, with the ...
Tanya M. Monro, Nigel A. Spooner, Fenghong Chu, Stephen C. Warren-Smith, Georgios Tsiminis   +4 more
doaj   +1 more source

Rapidly Diversifying Hydrogen‐Bonded Organic Frameworks With Permanent Porosity

Angewandte Chemie, EarlyView.
This article reviews diversifying hydrogen‐bonded organic frameworks (HOFs) with permanent porosity reported over the past 15 years, based on the molecular structures of their constituent tectons. Furthermore, several distinctive aspects and concepts are described, such as permanent porosity, isostructural (isoreticular) HOFs, and multicomponent mixed ...
Taito Hashimoto, Ichiro Hisaki
wiley   +2 more sources