Mussel inspired preparation of amine-functionalized Kaolin for effective removal of heavy metal ions

Huang, Qiang; Liu, Meiying; Deng, Fengjie; Wang, Ke; Huang, Hongye; Xü, Dong; Zeng, Guangjian; Zhang, Xiaoyong; Wei, Yen

doi:10.1016/j.matchemphys.2016.06.041

Cited by 39 publications

(9 citation statements)

References 59 publications

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“…In general, results in this current article show the existence of acidic features in grey kaolin and are comparable with other studies, independent of the characterization methods employed [7,14,17,25,26]. Researchers studied the acidic features of the pillared clays using the potentiometric titration method in order to determine their acidic characteristics (pH 4 to 6) [26].…”

Section: Selectivity Of the Mboh Conversion Reactionsupporting

confidence: 86%

“…In terms of their various industrial applications, clay materials play an important role in the production of ceramics, cement [1][2][3], environmental protection, and wastewater treatment [4,5]. In order to clearly understand the uses of clay materials, researchers investigate their properties [6,7] and endeavor to identify and explain their characteristics at their models level: micro and nano [8,9]. A number of characterizations methods such as differential thermal analysis (DTA), thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray fluorescence (XRF), and X-ray diffraction (XRD) are employed to examine the properties, morphological structures, and the chemical compositions of different clays [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Alsawalha

Ratemi

2018

Journal of Chemistry

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This current article demonstrates how X-ray fluorescence spectroscopy (XRF) was employed to reveal the major constituents of a sample of natural grey Saudi kaolin. The XRF results showed that it contained 52.90 wt.% silica together with 14.84 wt.% alumina. Additionally, this paper presents a study on the effect of holding times (i.e., 6, 12, 18, and 24 h) using pyrrole adsorption and methylbutynol test reaction (MBOH) on the Saudi grey kaolin (raw material). Temperature-programmed desorption of pyrrole (pyrrole-TPD) results indicated that increases in thermal conductivity detector (TCD) signals are directly proportional to increases in the heat activation holding time. Notably, a raw Saudi grey kaolin sample heated at a holding time of twenty-four hours resulted in the most intense TCD signal. Further, the MBOH transformations produced 3-methyl-3-buten-1-yne (MBYNE), as the main product, indicating the dehydration of MBOH due to the acidic sites of Saudi grey kaolin. The basic catalysis route was operative at the beginning of the reaction as acetone was observed only during the initial thirty-five minutes of the reaction then later dispersed entirely. Its disappearance is attributed to the high silica content of the test sample.

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Section: Selectivity Of the Mboh Conversion Reactionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Alsawalha

Ratemi

2018

Journal of Chemistry

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“…Methyl orange (MO) and methyl red (MR) are examples of benzidine‐based anionic azo dyes which are prohibited in some countries due to their carcinogenic and toxic effects on living organisms but they are still used in some industries . MO and MR containing aromatic motifs are not susceptible for biodegradation process in the nature It is necessary to find and develop innovative and benign processes to remove these materials at low concentrations …”

Section: Introductionmentioning

confidence: 99%

“…These changes could be achieved by crosslinking, carboxymethylation, grafting, and mussel‐inspired methods to tailor the surface properties and to reduce the crystalline state of TG and produce accessible binding sites through expansion of the polymer network . On the other hand, researchers recently have investigated the immobilization of different polymeric materials onto the surface of magnetic compounds to address the issue of adsorbent recovery from wastewater because magnetic properties of adsorbent can introduce the efficient and facile strategy for separation of adsorbents from aqueous media . Among these polymeric materials, polysaccharides, such as gums and chitosan, due to the features aforementioned, they have received attention .…”

Section: Introductionmentioning

confidence: 99%

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum

Moghaddam

Jazi

Allahrasani

et al. 2019

J of Applied Polymer Sci

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A new composite of cobalt ferrite and Tragacanth gum (TG) was developed and applied to remove methyl orange (MO) and methyl red (MR) from wastewater samples simultaneously. The results showed that the presence of TG improved the capability of cobalt ferrite in removing the pollutants in considerably. The adsorption properties and surface morphology of the sorbent were compared with those of bare cobalt ferrite, TG, and TG grafted copolymer. The properties of the adsorbents were studied using Fourier transform infrared, scanning electron microscope, transmission electron microscope, X-ray diffraction, and vibrating sample magnetometer, and the effects of different factors such as the amount of the adsorbent, sample pH, contact time, and initial concentration were also evaluated and optimized through response surface methodology using central composite design. The optimal conditions for the adsorption of both dyes (100 mg L −1 as the concentration) were pH of 4.0, adsorbent dose of 0.5 mg mL −1 , and contact time of 110 min. Under these conditions, the MO and MR adsorption processes were found to follow pseudo-second-order kinetic model. The equilibrium adsorption data followed the Langmuir isotherm and the highest adsorption capacity was determined to be 336 and 387 mg g −1 for MO and MR, respectively.

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“…Among these heavy metal ions, the copper ions should be the most typical ones because they were involved in many industrial processes, such as electroplating, paint, electrical, fertilizer, wood manufacturing and pigment industries. [2][3][4][5] Previously, a number of methods, including chemical precipitation, ion exchange, liquid-liquid extraction, electrodialysis, biosorption have been developed to remove these toxic metal ions. [6][7][8][9][10][11] Much attention has been focused on the removal of Cu 2+ ions by adsorption because of its simplicity, relative low-cost, effective and flexible in design and operation.…”

Section: Introductionmentioning

confidence: 99%

Facile preparation of carbon nanotubes based carboxymethyl chitosan nanocomposites through combination of mussel inspired chemistry and Michael addition reaction: Characterization and improved Cu2+ removal capability

Zeng

Liu

et al. 2016

Journal of the Taiwan Institute of Chemical Engineers

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102

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The adsorption removal of heavy metal ions from aqueous solution using polymer nanocomposites has attracted great interest because of their advantages from both nanomaterials and polymers. In this work, a facile and novel method has been developed for surface modification of multi-walled carbon nanotubes (CNT) with carboxymethyl chitosan via combination of mussel inspired chemistry and Michael addition reaction. To obtain resultant CNT based chitosan nanocomposites (CNT-PDA-CS), pristine CNT were first coated with polydopamine (PDA) thin films through self polymerization of dopamine under alkaline aqueous solution. Then PDA modified CNT were further functionalized with carboxymethyl chitosan (CS) via Michael addition reaction. The successful preparation of CNT-PDA-CS nanocomposites was ascertained by a series of characterization techniques including transmission electron microscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis and X-ray photoelectron spectrometry. The utilization of the resultant CNT-PDA-CS for removal of Cu 2+ from aqueous solution was also examined in this work. The results showed that CNT-PDA-CS exhibited obviously enhanced Cu 2+ removal capability as compared with the unmodified CNT. Considered the versatility of mussel inspired chemistry, the method described in this work should be a general route for fabricating highly efficient adsorbents, which should be of great interest for environmental applications.CNT-PDA-CS for Cu 2+ removal was examined. Because of the existence of functional groups such as carboxyl groups, amino groups and hydroxyl groups on the surface of CNT based nanocomposites, the CNT-PDA-CS exhibited obviously enhanced adsorption capability towards copper ions as compared with the unmodified CNT. Taken together, we have developed a novel, simple and universal strategy to prepare CNT based nano-adsorbents with high efficiency for removal of heavy metal ions from aqueous solution.These mussel inspired strategy should be a general method to fabricate various nanocomposites for environmental applications because of the universal and strong adhesion of PDA towards almost any materials and surface. [39,40] Scheme 1 the preparation of CNT-PDA-CS nanocomposites via a combination of mussel-inspired chemistry and a Michael addition reaction. Experiment Materials and characterizationDopamine hydrochloride was purchased from Sangon Biotech. Co., Ltd (Shanghai, China). CNT (> 95%, diameter of 30 to 50 nm) were purchased from Sino Nanotech Ltd. (Beijing, China). Tris (hydroxymethyl) aminomethane (Tris) and carboxylated chitosan are obtained from Aladdin Company (Shanghai China). All the other reagents are of analytical grade and used without further purification. Solution pH was monitored with a pH meter (Mettler-Toledo International Inc., China), fitted with a combined glass electrode (0.01 pH 2.4. Preparation of CNT-PDA-CS 200 mg of CNT-PDA was dispersed in Tris buffer solution (10 mM, pH = 8.5). 200 mg of chitosan was then added into the solution and stirred fo...

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Mussel inspired preparation of amine-functionalized Kaolin for effective removal of heavy metal ions

Cited by 39 publications

References 59 publications

Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum

Facile preparation of carbon nanotubes based carboxymethyl chitosan nanocomposites through combination of mussel inspired chemistry and Michael addition reaction: Characterization and improved Cu2+ removal capability

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Mussel inspired preparation of amine-functionalized Kaolin for effective removal of heavy metal ions

Cited by 39 publications

References 59 publications

Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Properties of Raw Saudi Arabian Grey Kaolin Studied by Pyrrole Adsorption and Catalytic Conversion of Methylbutynol

Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe2O4 modified with Tragacanth gum

Facile preparation of carbon nanotubes based carboxymethyl chitosan nanocomposites through combination of mussel inspired chemistry and Michael addition reaction: Characterization and improved Cu2+ removal capability

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Removal of acid dyes from aqueous solutions using a new eco‐friendly nanocomposite of CoFe₂O₄ modified with Tragacanth gum