Physisorption and chemisorption trends in surface modification of carbon black

Atif, Muhammad; Haider, Hafiz Zeshan; Bongiovanni, Roberta Maria; Fayyaz, Maria; Razzaq, Tayyaba; Gul, Sara

doi:10.1016/j.surfin.2022.102080

Cited by 26 publications

(12 citation statements)

References 120 publications

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“…These modifications are reviewed in. [54,55] However, investigations afterward show interactions of CB and rubber, particularly non-polar ones, e.g. NR, BR etc.…”

Section: Carbon Black (Cb) and Its Derivativesmentioning

confidence: 99%

Review: Natural rubber – Improvement of properties

Dieu,

Chuong,

Hung

et al. 2023

Vietnam Journal of Chemistry

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Natural rubber (NR) is valuable material of natural origination with growing demand worldwide. Thus, the methods for NR property improvement are continuously developed. The article will be focused on methods of chemical modification of NR and the use of improved traditional fillers such as carbon black (CB) and silica. Modification reactions include epoxidation, hydrogenation, and grafting vinyl monomers onto NR molecules. Some methods of surface modification of NR film were also reviewed. Thanks to modification the NR degree of unsaturatiton is decrease that leads to its enhanced aging resistance. Besides, grafted functional groups may impart new, never met before properties to NR. Application of modified traditional fillers obviously increase their reinforcement possibility, particularly mechanical. Also, cellulose as a potential reinforcing filler is considered due to its ability to meet requirement of environment protection while keep the mechanical properties of NR products at acceptable high level.

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“…These modifications are reviewed in. [54,55] However, investigations afterward show interactions of CB and rubber, particularly non-polar ones, e.g. NR, BR etc.…”

Section: Carbon Black (Cb) and Its Derivativesmentioning

confidence: 99%

Review: Natural rubber – Improvement of properties

Dieu,

Chuong,

Hung

et al. 2023

Vietnam Journal of Chemistry

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“…[10][11] Chemisorption occurs via formation of strong force such as ionic, covalent bonds and hydrogen bond between adsorbent and the adsorbed species, while physical adsorption is characterized by weak Vander Waals, dipoledipole, polar interactions between the adsorbent and adsorbate. [12][13] Oxidation method is the oxidation of organic molecules by hydroxyl radicals to convert large molecules into non-toxic small molecules, thus destroying the colored groups in the dye molecules. [14] It is mainly divided into chemical oxidation and photocatalytic oxidation.…”

Section: Introductionmentioning

confidence: 99%

Rapid Adsorption Methylene Blue from Aqueous Solution using Manganese Dioxide Nanowires: Facile Synthesis, Characterization, Kinetics, Thermodynamics and Mechanism Analysis

Bian

Ding

et al. 2023

ChemistrySelect

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Manganese dioxide nanomaterials with high crystallinity and purity was prepared quickly by a simple hydrothermal reaction, and the effect of hexadecyl trimethyl ammonium chloride (CTAC) on crystal form, morphology and pore structure of manganese dioxide was investigated. Removal of methylene blue from aqueous solution by adsorption onto two manganese dioxide adsorbents was studied. The material characterization results showed that manganese dioxides have (2×2) tunnel structure and nanowires morphology. BET surface area and pore volume of ɑ‐MnO2 (CTAC) was 58.99 m2/g and 0.2081 cm3/g, respectively. The adsorption results showed that pH value had a certain effect on the removal of methylene blue. The adsorption kinetics results indicated that the adsorption rate of ɑ‐MnO2 and ɑ‐MnO2 (CTAC) to methylene blue was very fast, most adsorption was completed within 5 minutes, and the adsorption equilibrium was reached after 2 hours. The removal efficiency of ɑ‐MnO2 and ɑ‐MnO2 (CTAC) was 71.27 % and 78.92 %, respectively. Pseudo‐second‐order kinetic model was better fitted with adsorption data than pseudo‐first‐order model, suggesting adsorption behavior is controlled by chemical processes. Additionally, the free energy change (ΔGΘ) was determined by Van′t Hoff equation is negative, which confirms the adsorption process is spontaneous and feasible. The adsorption mechanism involves a complex process of electrostatic attraction, charge‐independent adsorption, physical adsorption, hydrogen bonding and redox.

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“…Adsorption on carbonaceous materials is well known approach 27 , 28 . Adsorption of heavy metals on biowaste derived carbonaceous matter is thought to be more cost-effective than commercial activated carbon, most probably owing to the conductive nature 29 .…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of cobalt adsorption capacity of walnut shell by organic acid activation

Irshad

Atif

Ali

et al. 2023

Sci Rep

Self Cite

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Cobalt, from industrial waste and nuclear laundry, possess health risk to human beings, animals and plants. Number of methods, other than adsorption, have been reported in literature for Co removal from waste water. In this research walnut shell powder after modification has been utilized for Co adsorption. First step of modification involved chemical treatment by four different organic acids for 72 h. Samples were collected at 24, 48 and 72 h. Second step involved thermal treatment of 72 h samples. Unmodified and modified particles have been analyzed by chemical methods and instruments i.e. UV spectrometer, FTIR, cyclic voltammetry (CV) and microscopic imaging. Thermally treated samples have shown augmented Co adsorption. CV analysis showed thermally treated samples with better capacitance. Particles modified by oxalic acid presented better Co adsorption. Oxalic acid treated particles activated for 72 h with thermal treatment provided maximum adsorption capacity 1327 ± 20.6 mg/g against Co(II) at pH 7, stirring 200 rpm, initial concentration 20 ml, adsorbent dosage (5 mg) and contact time 240 min at room temperature.

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Physisorption and chemisorption trends in surface modification of carbon black

Cited by 26 publications

References 120 publications

Review: Natural rubber – Improvement of properties

Review: Natural rubber – Improvement of properties

Rapid Adsorption Methylene Blue from Aqueous Solution using Manganese Dioxide Nanowires: Facile Synthesis, Characterization, Kinetics, Thermodynamics and Mechanism Analysis

Experimental evaluation of cobalt adsorption capacity of walnut shell by organic acid activation

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