Chitosan-functionalized natural magnetic particle@silica modified with (3-chloropropyl)trimethoxysilane as a highly stable magnetic adsorbent for gold(III) ion

Nuryono, Nuryono; Miswanda, Dikki; Sakti, Satya Candra Wibawa; Rusdiarso, Bambang; Krisbiantoro, Philip Anggo; Utami, Nastiti; Otomo, Ryoichi; Kamiya, Yuichi

doi:10.1016/j.matchemphys.2020.123507

Cited by 45 publications

(18 citation statements)

References 42 publications

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“…These magnetic resins is easily collected from aqueous media using an external magnetic field and displayed higher uptake capacity compared to the magnetic particles-free resin. However, since Chang and Chen reported the CMCS-MNP sorbent in 2005 (Chang and Chen, 2005), many magnetic chitosan has employed for different functions as theranostic applications (Baktask et al, 2020; Lian et al, 2020) and some studies (Kuang et al, 2013;Mi et al, 2015;Song et al, 2016, Nuryono et al, 2020 have focused on its sorption of heavy metals from aqueous solutions. Cadmium pollution of the environment has become a serious problem due to the increasing consumption of cadmium by industry in the past 20 years.…”

Section: Magnetic Modified Cadmium Removal Magnetite Chitosan Adsomentioning

confidence: 99%

Removal of cadmium from aqueous solution using modified magnetic glycine modified cross-linked chitosan resin

Mohamed¹,

Hamouda²,

Kader³

et al. 2021

Egypt. J. of Aquatic Biolo. and Fish.

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Water is the most vital substance for life on the earth and a precious resource for human civilization for many critical areas such as: food, energy, industrial, and the environment. Water resources are increasingly decreasing and need to be preserved. In recent years, industrialization, agricultural activities, rapid population growth and urbanization have contributed negatively to clean water resources (Ali et al., 2018; Basheer, 2018). Different pollutants such as pharmaceuticals, pesticides, dyes and heavy metals have contaminated the water resources. Presence of these contaminants in aqueous environments is environmentally hazardous for human beings and animals. Among these pollutants, heavy metal is one of the most hazardous species, due to their toxic nature especially when their concentrations exceed the allowable limits in the ecosystem. These pollutants are non-biodegradable and can be absorbed by marine life. Once high concentrations of heavy metals enter the food chain, they tend to accumulate in living tissues and thus, dysfunction the system of the human bodies (Fu, 2011).

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Section: Magnetic Modified Cadmium Removal Magnetite Chitosan Adsomentioning

confidence: 99%

Removal of cadmium from aqueous solution using modified magnetic glycine modified cross-linked chitosan resin

Mohamed¹,

Hamouda²,

Kader³

et al. 2021

Egypt. J. of Aquatic Biolo. and Fish.

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“…Generally, NH 3 acts as catalyst in the hydrolysis and condensation of TEOS and CPTMOS [ 38 , 39 ]. The effect of NH 3 concentration on the adsorption ability of [C 3 mim] + Cl − @SiO 2 is shown in Figure 3 b.…”

Section: Resultsmentioning

confidence: 99%

Adsorption and Purification of Baicalin from Scutellaria baicalensis Georgi Extract by Ionic Liquids (ILs) Grafted Silica

Fan

Zhang

2021

Molecules

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Baicalin which has multiple biological activities is the main active component of the root of Scutellaria baicalensis Georgi (SBG). Although its isolation and purification by adsorption methods have aroused much interest of the scientific community, it suffered from the poor selectivity of the adsorbents. In this work, an environmentally benign method was developed to prepare ionic liquids (ILs) grafted silica by using IL 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C4mim]NTf2) and ethanol as reaction media. The IL 1-propyl-3-methylimidazolium chloride ([C3mim]Cl) grafted silica ([C3mim]+Cl−@SiO2) was used to adsorb and purify baicalin from the root extract of Scutellaria baicalensis Georgi (SBG). Experimental results indicated that the adsorption equilibrium can be quickly achieved (within 10 min). The adsorption behavior of [C3mim]+Cl−@SiO2 for baicalin was in good agreement with Langmuir and Freundlich models and the adsorption was a physisorption process as suggested by Dubinin–Radushkevich model. Compared with commercial resins, [C3mim]+Cl−@SiO2 showed the strongest adsorption ability and highest selectivity. After desorption and crystallization, a purity of baicalin as high as 96.5% could be obtained. These results indicated that the ILs grafted silica materials were promising adsorbents for the adsorption and purification of baicalin and showed huge potential in the purification of other bioactive compounds from natural sources.

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“…While chitosan has been combined with various carbon based materials, as illustrated in Section 3.1 , there is growing interest in the use of inorganic components, such as activated alumina [ 310 ], mesoporous alumina [ 311 ], silica and ordered mesoporous silica-based materials, as the chitosan support materials [ 312 , 313 ]. Silica has very good physical, mechanical and thermal stability and can be easily functionalised due to its hydroxyl groups.…”

Section: Chitosan Supportsmentioning

confidence: 99%

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

et al. 2021

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The quality of water is continuously under threat as increasing concentrations of pollutants escape into the aquatic environment. However, these issues can be alleviated by adsorbing pollutants onto adsorbents. Chitosan and its composites are attracting considerable interest as environmentally acceptable adsorbents and have the potential to remove many of these contaminants. In this review the development of chitosan-based adsorbents is described and discussed. Following a short introduction to the extraction of chitin from seafood wastes, followed by its conversion to chitosan, the properties of chitosan are described. Then, the emerging chitosan/carbon-based materials, including magnetic chitosan and chitosan combined with graphene oxide, carbon nanotubes, biochar, and activated carbon and also chitosan-silica composites are introduced. The applications of these materials in the removal of various heavy metal ions, including Cr(VI), Pb(II), Cd(II), Cu(II), and different cationic and anionic dyes, phenol and other organic molecules, such as antibiotics, are reviewed, compared and discussed. Adsorption isotherms and adsorption kinetics are then highlighted and followed by details on the mechanisms of adsorption and the role of the chitosan and the carbon or silica supports. Based on the reviewed papers, it is clear, that while some challenges remain, chitosan-based materials are emerging as promising adsorbents.

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Chitosan-functionalized natural magnetic particle@silica modified with (3-chloropropyl)trimethoxysilane as a highly stable magnetic adsorbent for gold(III) ion

Cited by 45 publications

References 42 publications

Removal of cadmium from aqueous solution using modified magnetic glycine modified cross-linked chitosan resin

Removal of cadmium from aqueous solution using modified magnetic glycine modified cross-linked chitosan resin

Adsorption and Purification of Baicalin from Scutellaria baicalensis Georgi Extract by Ionic Liquids (ILs) Grafted Silica

Recent Developments in Chitosan-Based Adsorbents for the Removal of Pollutants from Aqueous Environments

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