Results 81 to 90 of about 83,849 (312)

Dyes adsorption from aqueous solutions by Chitosan [PDF]

open access: yes, 2014
In this study the ability of chitosan to remove acid, basic, reactive and direct dyestuffs by adsorption was studied. The effect of several factors influencing dye adsorption such as dye concentration, grain size, pH and temperature were investigated ...
Francolini, Iolanda   +2 more
core   +1 more source

Defect Engineering Activates Pyrene‐Based Covalent Organic Frameworks for Efficient Photocatalytic Uranium Capture

open access: yesAdvanced Science, EarlyView.
A defect‐engineered pyrene‐based covalent organic framework (TP‐PYTO‐SA) is developed via strategic salicylaldehyde incorporation. This approach simultaneously enhances hydrophilicity and introduces uranyl coordination sites, while optimized defect density significantly improves charge separation.
Weikun Yao   +5 more
wiley   +1 more source

Effect of Nano-Sized Cavities in SAPO-34 Zeolite on Thermodynamics of Adsorbed Gas Mixtures

open access: yesNanomaterials, 2018
Adsorption of dimethyl ether and ethene in SAPO-34 zeolite with the calorimetric (adsorption heat versus coverage) curve measured together with the adsorption isotherm showed two phases of adsorption: first, Type 1 adsorption on acid sites, and second ...
Fei Wang   +4 more
doaj   +1 more source

Effect of Subphase Ca++ Ions on the Viscoelastic Properties of Langmuir Monolayers

open access: yes, 1999
It is known that the presence of cations like Ca++ or Pb++ in the water subphase alters the pressure-area isotherms for fatty acid monolayers. The corresponding lattice constant changes have been studied using x-ray diffraction.
Carr, Sharon   +2 more
core   +1 more source

Nanozymes Integrated Biochips Toward Smart Detection System

open access: yesAdvanced Science, EarlyView.
This review systematically outlines the integration of nanozymes, biochips, and artificial intelligence (AI) for intelligent biosensing. It details how their convergence enhances signal amplification, enables portable detection, and improves data interpretation.
Dongyu Chen   +10 more
wiley   +1 more source

Using Akaike Information Criterion to Select the Optimal Isotherm Equation for Adsorption from Solution

open access: yesAdsorption Science & Technology, 2014
In this study, we measured the adsorption of Basic Blue 41 (BB41) dye on a maize cob adsorbent and on two model adsorbents (cellulose triacetate and cellulose acetate propionate).
Martín M. Dávila-Jiménez   +4 more
doaj   +1 more source

Kinetic, Isotherm, and Thermodynamic Modeling of Pb(II) Removal from Aqueous Solutions Using Cellulose Extracted from Pentaclethra macrophylla Benth Pod [PDF]

open access: yesJournal of Chemistry Letters
Biosorption potentials of cellulose from pentaclethra Macrophylla pod for the removal of Pb(II) from aqueous solution was investigated. The cellulose adsorbent was successfully isolated and characterized X-ray diffraction (XRD), scanning electron ...
OKechukwu Nsude   +2 more
doaj   +1 more source

Modifying monolayer behaviour by incorporating subphase additives and improving Langmuir–Blodgett thin film deposition on optical fibres [PDF]

open access: yes, 2014
Experiments showing the possibility of modifying the behaviour of calix[4]resorcinarene monolayers at the air–water interface and optimising the deposition of multilayer coatings onto optical fibres are presented.
Collins, Mike   +6 more
core   +1 more source

An activity-based formulation for Langmuir adsorption isotherm

open access: yesAdsorption, 2019
This work presents an activity-based formulation for Langmuir adsorption isotherm. Treating adsorption as a chemical reaction between the gas molecule and the adsorption vacant site, the classical Langmuir isotherm model expresses the reaction in terms of the species concentrations.
Chun-Kai Chang, Hla Tun, Chau-Chyun Chen
openaire   +2 more sources

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