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Kinetics & dynamics articles published in the last 6 months

43 items - Showing page 1 of 2
Open Access Paper

Thermally modified nanocrystalline snail shell adsorbent for methylene blue sequestration: equilibrium, kinetic, thermodynamic, artificial intelligence, and DFT studies

The quest for an efficient and sustainable adsorbent material that can effectively remove harmful and hazardous dyes from industrial effluent has become more intense. Thermally modified nanocrystalline snail shell is a new biosorbent for removing methylene blue dye from contaminated wastewater.

Graphical abstract: Thermally modified nanocrystalline snail shell adsorbent for methylene blue sequestration: equilibrium, kinetic, thermodynamic, artificial intelligence, and DFT studies
Open Access Paper

Mechanism of cationic ring-opening polymerisation of ε-caprolactone using metallocene/borate catalytic systems: a DFT and NCI study on chain initiation, propagation and termination

DFT and NCI studies provide a detailed mechanism of cationic ROP of ε-caprolactone by metallocene/borate catalysts and capture weak interactions at the contacts between the borate counteranions and the cationic species.

Graphical abstract: Mechanism of cationic ring-opening polymerisation of ε-caprolactone using metallocene/borate catalytic systems: a DFT and NCI study on chain initiation, propagation and termination
Open Access Paper

An investigation using DFT into the impact of hydrogen on oxygen migration processes during aluminum anodization

The H atoms reduce the energy barrier for O entering the crystal of aluminum, from 1.52 eV to 0.78 eV. The introduction of a H atom affects the diffusion of the O atom in the crystal of aluminum, from 1.23 eV to 0.34 eV.

Graphical abstract: An investigation using DFT into the impact of hydrogen on oxygen migration processes during aluminum anodization
Open Access Paper

Exploring the thermal decomposition and detonation mechanisms of 2,4-dinitroanisole by TG-FTIR-MS and molecular simulations

Investigating the thermal decomposition and detonation mechanisms of DNAN by combining TG-FTIR-MS with DFT and ReaxFF MD.

Graphical abstract: Exploring the thermal decomposition and detonation mechanisms of 2,4-dinitroanisole by TG-FTIR-MS and molecular simulations
Open Access Paper

Medium-temperature calcination and acid pressure leaching extract the Al2O3 from coal gangue: activation mechanism and kinetic analysis

Bauxite is an important strategic resource, and it is facing with the problem of balance between high demand of bauxite ore and low resource of bauxite reserves in China.

Graphical abstract: Medium-temperature calcination and acid pressure leaching extract the Al2O3 from coal gangue: activation mechanism and kinetic analysis
Open Access Paper

Hydrogenation of cyclohexene over single-atom Pt or Pd incorporated porous ceria nanoparticles under solvent-free conditions

Single-atom Pt or Pd incorporated porous CeO2 nanoparticles was prepared through one-step flash-combustion technique. The prepared catalysts exhibited high activity in the hydrogenation of cyclohexene under solvent-free conditions.

Graphical abstract: Hydrogenation of cyclohexene over single-atom Pt or Pd incorporated porous ceria nanoparticles under solvent-free conditions
Open Access Paper

Dual mechanisms in hydrogen reduction of copper oxide: surface reaction and subsurface oxygen atom transfer

The surface reaction and subsurface oxygen transfer jointly affect the process of hydrogen reduction of copper oxide.

Graphical abstract: Dual mechanisms in hydrogen reduction of copper oxide: surface reaction and subsurface oxygen atom transfer
Open Access Paper

Synthesis of Os@ZIF-8 nanocomposites with enhanced peroxidase-like activity for detection of Hg2+

Preparation of Os@ZIF-8 NCs and detection of Hg2+ concentration.

Graphical abstract: Synthesis of Os@ZIF-8 nanocomposites with enhanced peroxidase-like activity for detection of Hg2+
Open Access Paper

Dual active pyrimidine-based carbocyclic nucleoside derivatives: synthesis, and in silico and in vitro anti-diabetic and anti-microbial studies

New pyrimidine-based carbocylic nucleoside derivatives with C-4 substitution for inhibiting α-glucosidase as a means of alleviating the effects of diabetes mellitus (DM) and microbial infections.

Graphical abstract: Dual active pyrimidine-based carbocyclic nucleoside derivatives: synthesis, and in silico and in vitro anti-diabetic and anti-microbial studies
Open Access Paper

Structural, morphological, electrical, and dielectric properties of Na2Cu5(Si2O7)2 for ASSIBs

Solid inorganic electrolyte materials are fundamental components for constructing all-solid-state sodium-ion batteries.

Graphical abstract: Structural, morphological, electrical, and dielectric properties of Na2Cu5(Si2O7)2 for ASSIBs
Open Access Paper

Synergetic and advanced isotherm investigation for the enhancement influence of zeolitization and β-cyclodextrin hybridization on the retention efficiency of U(VI) ions by diatomite

In synergetic investigations, the adsorption effectiveness of diatomite-based zeolitic structure (ZD) as well as its β-cyclodextrin (CD) hybrids (CD/ZD) towards uranium ions (U(VI)) was evaluated to examine the influence of the transformation procedures.

Graphical abstract: Synergetic and advanced isotherm investigation for the enhancement influence of zeolitization and β-cyclodextrin hybridization on the retention efficiency of U(vi) ions by diatomite
Open Access Paper

QSAR models for the ozonation of diverse volatile organic compounds at different temperatures

This study aims to develop reliable QSAR models for 149 VOCs across a broad temperature range. The models were constructed based on the combination of SMILES and temperature as an experimental condition, namely as quasi-SMILES.

Graphical abstract: QSAR models for the ozonation of diverse volatile organic compounds at different temperatures
Open Access Paper

Synthesis, biological activities, and evaluation molecular docking-dynamics studies of new phenylisoxazole quinoxalin-2-amine hybrids as potential α-amylase and α-glucosidase inhibitors

New phenylisoxazole quinoxalin-2-amine hybrids 5a–i were successfully synthesised with yields of 53–85% and characterised with various spectroscopy methods.

Graphical abstract: Synthesis, biological activities, and evaluation molecular docking-dynamics studies of new phenylisoxazole quinoxalin-2-amine hybrids as potential α-amylase and α-glucosidase inhibitors
Open Access Paper

Kinetic analysis of the crystallization of Y2O3 and La2O3 doped Li2O–Al2O3–SiO2 glass

Study of crystallisation of rare earth oxide doped LAS glass ceramics without doping with conventional nucleating agents.

Graphical abstract: Kinetic analysis of the crystallization of Y2O3 and La2O3 doped Li2O–Al2O3–SiO2 glass
Open Access Paper

Theoretical prediction of nanosizing effects and role of additives in the decomposition of Mg(BH4)2

Nanosizing effects and role of additives in the decomposition of Mg(BH4)2 were studied by DFT modelling. Decomposition is favoured at the nanoscale with respect to the bulk along with a major catalytic effect of Ni compared to Cu.

Graphical abstract: Theoretical prediction of nanosizing effects and role of additives in the decomposition of Mg(BH4)2
Open Access Paper

Theoretical insight of reactive oxygen species scavenging mechanism in lignin waste depolymerization products

Syringol derivatives outperform phenolic antioxidants in non-polar solvents. HT mechanism is the favoured mechanism to scavenge hydroperoxyl radical in substituted syringols. Based on ASM analysis, the hydrogen bond is the key factor in increasing both strain and interaction energy.

Graphical abstract: Theoretical insight of reactive oxygen species scavenging mechanism in lignin waste depolymerization products
Open Access Paper

Detailed mechanism study of volatile organic compound decomposition and oxidation removal based on a ReaxFF MD method

Volatile organic compounds (VOCs) are typical air pollutants as well as gaseous wastes that contain energy.

Graphical abstract: Detailed mechanism study of volatile organic compound decomposition and oxidation removal based on a ReaxFF MD method
Open Access Paper

Evidence for non-Arrhenius behavior of EPDM rubber by combining Arrhenius and time–temperature superposition (TTS) extrapolations

Combine the Arrhenius extrapolation with the time–temperature superposition (TTS) extrapolation, a method to prove the non-Arrhenius behavior of rubber material is provided.

Graphical abstract: Evidence for non-Arrhenius behavior of EPDM rubber by combining Arrhenius and time–temperature superposition (TTS) extrapolations
Open Access Paper

Preparation of Fe3O4@CSAC catalyst and its degradation performance and heat release mechanisms in sewage degradation

To investigate the exothermic characteristics of a heterogeneous Fenton system during the degradation of organic sewage and provide technical support for energy recovery in sewage treatment, the catalyst Fe3O4@CSAC (coconut shell-activated carbon) was prepared.

Graphical abstract: Preparation of Fe3O4@CSAC catalyst and its degradation performance and heat release mechanisms in sewage degradation
Open Access Paper

Exploring borderline SN1–SN2 mechanisms: the role of explicit solvation protocols in the DFT investigation of isopropyl chloride

We explored borderline SNX reactions quantum-chemically, revealing a preferred dissociative-SN2 pathway controlled by solute–solvent interactions through various solvation models.

Graphical abstract: Exploring borderline SN1–SN2 mechanisms: the role of explicit solvation protocols in the DFT investigation of isopropyl chloride
Open Access Paper

Design of N–N ylide bond-based high energy density materials: a theoretical survey

Our work, for the first time, describes the possibility of designing structures with a fourth type of homonuclear N–N bond (besides >NN<, –NN–, and NN) to serve as energetic materials.

Graphical abstract: Design of N–N ylide bond-based high energy density materials: a theoretical survey
Open Access Paper

Quantification of crystallinity during indomethacin crystalline transformation from α- to γ-polymorphic forms and of the thermodynamic contribution to dissolution in aqueous buffer and solutions of solubilizer

The thermodynamic properties and dissolution of indomethacin (INM) were analyzed as models for poorly water-soluble drugs.

Graphical abstract: Quantification of crystallinity during indomethacin crystalline transformation from α- to γ-polymorphic forms and of the thermodynamic contribution to dissolution in aqueous buffer and solutions of solubilizer
Open Access Paper

Alkylimidazolium-based ionic liquids with tailored anions and cations for CO2 capture

The effect of different cations and anions in alkylimidazolium-based ionic liquids on CO2 solubility was investigated systematically.

Graphical abstract: Alkylimidazolium-based ionic liquids with tailored anions and cations for CO2 capture
Open Access Paper

Effective retention of cesium ions from aqueous environment using morphologically modified kaolinite nanostructures: experimental and theoretical studies

Kaolinite can undergo a controlled morphological modification process into exfoliated nanosilicate sheets (EXK) and silicate nanotubes (KNTs).

Graphical abstract: Effective retention of cesium ions from aqueous environment using morphologically modified kaolinite nanostructures: experimental and theoretical studies
Open Access Paper

An integrated experimental and theoretical approach to probe Cr(VI) uptake using decorated halloysite nanotubes for efficient water treatment

Halloysite nanotubes (HNTs) were surface functionalized using four distinct chemical moieties (amidoxime, hydrazone, ethylenediamine (EDA), and diethylenetriamine (DETA)), producing modified HNTs (H1–H4) capable of binding with Cr(VI) ions.

Graphical abstract: An integrated experimental and theoretical approach to probe Cr(vi) uptake using decorated halloysite nanotubes for efficient water treatment
43 items - Showing page 1 of 2

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