Journal ArticleDOI
Silica gel containing sulfur, nitrogen and oxygen as adsorbent centers on surface for removing copper from aqueous/ethanolic solutions.
Ricardo S A Machado,Maria G. Fonseca,Luiza N.H. Arakaki,José G.P. Espínola,Severino F. de Oliveira +4 more
TLDR
The new modified silica showed a good sorption ability for copper at lower temperatures and its reuse capacity was demonstrated and infrared and (13)C NMR spectroscopic data in conjunction with thermogravimetric measurements are in agreement with the suggested functionalization.About:
This article is published in Talanta.The article was published on 2004-05-28. It has received 66 citations till now. The article focuses on the topics: Silica gel & Adsorption.read more
Citations
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Adsorption of Pb(II) from aqueous solution by silica-gel supported hyperbranched polyamidoamine dendrimers.
Yuzhong Niu,Rongjun Qu,Changmei Sun,Chunhua Wang,Hou Chen,Chunnuan Ji,Ying Zhang,Xia Shao,Fanling Bu +8 more
TL;DR: FTIR analysis revealed that amine groups were mainly responsible for the adsorption of Pb(II) by amino-terminated adsorbents, while CO of ester groups also participated in the adsOrption process of esters, suggesting that SiO(2)-G0-SiO( 2)-G4.0 had great potential for the removal of P b( II) from aqueous solution.
Journal ArticleDOI
Fabrication and application of a new modified electrochemical sensor using nano-silica and a newly synthesized Schiff base for simultaneous determination of Cd2+, Cu2+ and Hg2+ ions in water and some foodstuff samples
TL;DR: It was found that the electrodes used for rapid, simple, accurate, selective and highly sensitive simultaneous determination of cadmium, copper and mercury using square wave anodic stripping voltammetry (SWASV) is highly selective.
Journal ArticleDOI
Preparation of ethylenediamine-anchored cellulose and determination of thermochemical data for the interaction between cations and basic centers at the solid/liquid interface
TL;DR: With the exception of the entropic value for copper, the other thermodynamic data for these systems are favorable for cation adsorption from aqueous solutions at the solid/liquid interface, suggesting the use of this anchored biopolymer for cations removal from the environment.
Journal ArticleDOI
Copper determination in ethanol fuel by differential pulse anodic stripping voltammetry at a solid paraffin-based carbon paste electrode modified with 2-aminothiazole organofunctionalized silica
TL;DR: The developed electrode was successfully applied to the determination of Cu(2+) in commercial ethanol fuel samples and the results were compared to those obtained by flame atomic absorption spectroscopy by using the F-test and t-test, confirming that there are no significant differences between the results obtained by both methods.
Journal ArticleDOI
Highly selective solid-phase extraction of trace Pd(II) by murexide functionalized halloysite nanotubes.
TL;DR: The originality on the high efficiency of murexide modified halloysite nanotubes as a new adsorbent of solid phase extraction has been reported to preconcentrate and separate Pd(II) in solution samples with satisfactory results.
References
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Book
Spectrometric identification of organic compounds
TL;DR: In this paper, a sequence of procedures for identifying an unknown organic liquid using mass, NMR, IR, and UV spectroscopy is presented, along with specific examples of unknowns and their spectra.
Book
Physical chemistry of surfaces
TL;DR: In this paper, the authors discuss the nature and properties of liquid interfaces, including the formation of a new phase, nucleation and crystal growth, and the contact angle of surfaces of solids.
Book
Introduction to Spectroscopy
TL;DR: In this paper, the authors present an overview of the basic concepts of one-dimensional NMR, including spin spin-spin coupling, spin-spin coupling, Heteronuclear coupling with other nuclei, and 13C coupling constants.