Introduction to Spontaneous Adsorption
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The negative standard enthalpy change (∆Hº) showed an exothermic process, the positive standard entropy change (∆Sº) displayed an increased disorder and the negative standard Gibbs free energy change (∆Gº) indicated a spontaneous adsorption method.
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The adsorption behavior followed Langmuir adsorption isotherm with a negative value of Gibbs free energy change, suggesting a spontaneous adsorption process.
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The adsorption of both azo dyes resulted in negative value of ΔG° which shows spontaneous adsorption of both azo dyes onto adsorbent active sites.
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In the pH effect experiment, the highest Sr2+ adsorption capacity was found at pH 9, and it has a spontaneous adsorption mechanism through experiments on temperature, time, and selectivity, and it reaches adsorption equilibrium within a short time and has high selectivity through competitive adsorption with Na+.
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Finally, the adsorption kinetics, isotherm and thermodynamic studies suggested that the adsorption behavior of TH over the PAN-Cu/ABN-CNFs should be better described by the correlation coefficients of Avrami fractional-order kinetics and Liu isotherm, while the thermodynamic studies showed a favorable exothermic and spontaneous adsorption mechanism.
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In addition, the removal efficiency of MTX by the hybrid material was as high as 95% within 5 min, MTX adsorption followed both a pseudo-second-order kinetic model and the Langmuir isotherm, and it is a spontaneous adsorption.
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Thermodynamic analyses confirmed the endothermic and spontaneous adsorption behavior of Hg2+ on SAC in the seawater environment.
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The negative values of enthalpy (ΔH) and free energy (ΔG) revealed exothermic and spontaneous adsorption of dye at room temperature.
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Kinetic, isotherm and thermodynamic analyses indicated the fast, effective and spontaneous adsorption of TC by M-LWAC.
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Spontaneous adsorption of dialkylsiloxane chains to MWCNT surfaces (wetting) and the resulting changes in composite structure are implicated as the basis for dispersion and thermal behavior changes.
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The investigation of the spontaneous adsorption of IONP@CnX2n+1OEG8Den at the interface between air or air saturated with perfluorohexane and an aqueous phase establishes that exposure to the fluorocarbon gas markedly increases the rate of adsorption of the dendronized IONPs to the gas/water interface and decreases the equilibrium interfacial tension.
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The calculations predict more spontaneous adsorption of 2-propanol on the (111) surface of ZnFe2 O4 than 1-propanol.
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The total flux decreases sharply with hydrocarbon content before the critical value while almost holds a constant after the critical value, which is attributed to the spontaneous adsorption of hydrocarbon on the organic surface.
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These values showed that exothermic and spontaneous adsorption of the extract on the mild steel followe d the mechanism of physical adsorption.
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Thermodynamically, it is endothermic, irreversible and spontaneous adsorption process.
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The deposition performed by spontaneous adsorption of the cobalt pyridinoporphyrazine complex from its aqueous solution led on basal plane HOPG to the formation of a uniform homogeneous film with simultaneous reduction of cobalt centre, while at Au(111) electrode preferential aggregation of pyridinoporphyrazine complex took place without any change of reduction state of cobalt.
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Thermodynamic studies revealed an exothermic and spontaneous adsorption process in nature.
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Incorporation of nanoparticles in serum containing-media leads to spontaneous adsorption of proteins on the nanoparticle surface thus forming “protein corona”.
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7 approximately, were obtained by spontaneous adsorption of INH molecules to HLNTs powder in aqueous medium.
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19 kJ/mol, respectively, indicating a spontaneous adsorption process.
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There was no evidence of spontaneous adsorption of particles onto the oil-water interface without ultrasound, which suggests the presence of a stabilizing force.
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This application is directly related to the phenomenon of protein corona, characterized by the spontaneous adsorption of proteins on the nanoparticle surface, which is not fully understood.
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The values of ΔGads are given in negative values in all cases means that spontaneous adsorption of inhibitor on steel surface and strong interaction between the inhibitor molecules and metal surface.
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The adsorption of As(III) by PTFE was an exothermic process, and because the increase in temperature broke the hydrogen bond, the amount of adsorption was decreased, which was not conducive to spontaneous adsorption.
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Thermodynamic parameters inferred the spontaneous adsorption of inhibitor molecules on the metal surface.
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The thermodynamic parameter was analyzed further and it showed an exothermic and spontaneous adsorption process.
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In addition, thermodynamic study confirmed the endothermic and spontaneous adsorption reactions.
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A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions.
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The surfaces of Pd-NPs are modified by spontaneous adsorption of gold and characterized by cyclic voltammetry in acidic medium.
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Ag surface modification tunes the electronic structure of SiNW considerably, which is further moderated by the spontaneous adsorptions of NO2 on surface Si site and on the modified Ag atom.
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Firstly, the pre-adsorption of oxygen on SnO2 (110) surface was modeled and analyzed, it was proved that the spontaneous adsorption O2 molecule and O atom could take place more easily on SnO2 (110) reductive surface than SnO2 (110) oxidative surface, and O2 molecule has more obvious tendency to be dissociated when adsorbed on SnO2 (110) reductive surface.
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To date the driving force for the spontaneous adsorption of precursors on non-modified PSB had not been investigated.
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All adsorbents except SIMRDP have spontaneous adsorption process.
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The thermodynamic parameter values suggested that endothermic and spontaneous adsorption occurred.
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ΔG values obtained were all negative for both resins indicating a spontaneous adsorption process.
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The investigation of the spontaneous adsorption of IONP@CnX2 n +1OEG8Den at the interface between air or air saturated with perfluorohexane and an aqueous phase establishes that exposure to the fluorocarbon gas markedly increases the rate of adsorption of the dendronized IONPs to the gas/water interface and decreases the equilibrium interfacial tension.
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Thermodynamic parameters obtained indicate an endothermic and spontaneous adsorption process for lanthanum and exothermic and nonspontaneous adsorption process for cerium.
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The thermodynamic parameters indicated that the experiments proceeded as exothermic and spontaneous adsorption.
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For thermochemistry parameters at different temperatures, the negative ΔG° showed a spontaneous adsorption process, the negative ΔH° indicated an exothermic process and the positive ΔS° exhibited an increase disorder.
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56 mg/g through an endothermic and spontaneous adsorption process that could be used for up to 5 cycles of adsorption process.
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Negative values of ΔGº for all three dyes suggested the feasibility of dyes removal and support for spontaneous adsorption of mentioned dyes on magnetic nanocomposite hydrogel.
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05 J mol−1 K−1 for solution containing lead concentration between 5 and 20 mg L−1 indicated an exothermic and spontaneous adsorption process.
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Thermodynamic analysis implied the physisorption dominated the spontaneous adsorption process.
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The surface charge induced by spontaneous adsorption of hydroxyl ions on MoS2 surfaces favors the exfoliation process.
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Thermodynamic parameters (ΔH° and ΔG°) reflected the exothermic and spontaneous adsorption process.
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We show that such spontaneous adsorption can indeed be initiated by the interactions of loose polycation chains of the polyplex with polar head groups of lipids.
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As an eco-friendly and versatile adhesive source in nature, dopamine could be easily adhered to surfaces of organic material and inorganic material via polymerization processes and spontaneous adsorption under weak alkaline pH conditions.
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The negative ΔG° values indicated a spontaneous adsorption process.
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Thermodynamic investigation showed that the lead ion adsorption process is exothermic and spontaneous in both adsorbents, the degree of spontaneous adsorption process in the magnetic composite of HAp/Fe3O4 is higher, and the energy required for the adsorption process is less than that of HAp.
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In addition, the thermodynamic data suggested a spontaneous adsorption process with endothermic characteristics.
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86 kJ mol −1 , for MB and RB5 removal onto nGO-(NH)R respectively, which evidenced the spontaneous adsorption of both dyes and chemisorption behavior of RB5.
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Spontaneous adsorption of poly(lysine)-g-poly(ethylene glycol) comb-like copolymers (PLL-g-PEG) is a versatile mean to coat substrates with polymer layers that resist cell adhesion.
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The endothermic and spontaneous adsorption follows a pseudo-second-order kinetic model, and the adsorption equilibrium data fit the Temkin isotherm well.
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Benefiting from a large number of adsorption sites and multiple interactions, PEI@MCNTs possessed high selectivity towards ARS with spontaneous adsorption process.
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-30 mV, spontaneous adsorption occurred, coupled with augmented interfibrillar interactions, yielding stronger and tougher interfacial gels.
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