Magnetic-controlled aerogels from carboxylated cellulose and MnFe2O4 as a novel adsorbent for removal of Cu(II)

Wang, Xue; Jiang, Shengjun; Cui, Sheng; Tang, Yinhan; Pei, Zifan; Duan, Haoran

doi:10.1007/s10570-019-02444-7

Cited by 38 publications

(9 citation statements)

References 40 publications

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“…Different materials [ 14 ], including aerogels (silica-based, carbon, organic, other inorganic types and composites thereof) have been studied as heavy metal adsorbents by several authors [ 6 , 7 , 8 , 9 , 15 , 16 , 17 , 18 , 19 ]. These works are mostly based on featuring adequate surface groups for the adsorbent to interact with the cations in solution, namely amine groups (although thiol and carboxylic groups are also common).…”

Section: Introductionmentioning

confidence: 99%

Silica Aerogels/Xerogels Modified with Nitrogen-Containing Groups for Heavy Metal Adsorption

2020

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Heavy metals are common inorganic pollutants found in the environment that have to be removed from wastewaters and drinking waters. In this work, silica-derived aerogels and xerogels were modified via a co-precursor method to obtain functional adsorbents for metal cations. A total of six formulations based upon four different functional precursors were prepared. The materials′ structural characterization revealed a decreased porosity and surface area on modified samples, more prominent in xerogel counterparts. Preliminary tests were conducted, and the prepared samples were also compared to activated carbon. Three samples were selected for in-depth studies. Isotherm studies revealed that the pre-selected samples remove well copper, lead, cadmium and nickel, and with similar types of interactions, following a Langmuir trend. The adsorption kinetics starts very fast and either equilibrium is reached quickly or slowly, in a two-stage process attributed to the existence of different types of active sites. Based on the previous tests, the best sample, prepared by mixing different functional co-precursors, was selected and its behavior was studied under different temperatures. For this material, the adsorption performance at 20 °C is dependent on the cation, ranging from 56 mg·g−1 for copper to 172 mg·g−1 for lead.

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Section: Introductionmentioning

confidence: 99%

Silica Aerogels/Xerogels Modified with Nitrogen-Containing Groups for Heavy Metal Adsorption

2020

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“…At this stage, the different concentration of Cu(II) between the solution and adsorbent surface causes the diffusion of the phenomenon. The adsorption process slows down as the reaction progresses and finally reaches equilibrium after 150 min [55]. The removal of basic MG dye onto CNF aerogels quickly happens in the first 40 min, then virtually non-changes beyond 80 min at all initial concentrations (10-400 mg/L) [64].…”

Section: Effect Of Different Parameters On Adsorption Capacity 41mentioning

confidence: 99%

“…The surface of bio-materials containing rich in hydroxyl groups (-OH) has a stronger adsorption capacity for metal ions. In recent studies, it has been a trend that modification of natural cellulosic aerogel by various crosslinkers containing carboxylic (-COOH) [55], amine (-NH 2 ) groups [17], or magnetic-controlled [56] are effective policies to improve its contaminated water removal (table 2). The chelation of complexation, ion exchange, or coordination of -OH, -NH 2 , and -COOH functional groups attract and connect contaminant ions to the active sites for adsorption.…”

Section: 1mentioning

confidence: 99%

“…mechanism is formed by metal-ligand coordination linking with only central metal ion/atom[17]. Carboxylated MnFe 2 O 4 /cellulose aerogel[55] and MnFe 2 O 4 /cellulose aerogel[56] performed rapid removal efficiency and excellent adsorption ability to eliminate Cu 2+ ions, which were higher than traditional cellulose aerogel (compared 73.70 and 63.30 mg/g with 6.40 mg/g). Hui et al were synthesized a magnetic double-base aerogel Fe 3 O 4…”

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confidence: 97%

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Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Nguyen

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Water pollution caused by inorganic and organic compounds affects seriously health risks and the destruction of the water balance of the ecosystem. Water remediation is one of the greatest challenges of the modern age, which is faced by several countries in over the world. Many advanced technologies have been developed in recent years to manage this alarming problem. One of the recent research directions is to utilize agricultural waste, which is an abundant, low-cost, eco-friendly source, to manufacture cellulose aerogels for the removal of heavy metals, dyes, and oils from contaminated water. This review paper focuses on the latest green fabrication of bio-aerogels from various cellulose-based plant waste and studies on the kinetics and influence of factors such as contact time, pH solution, initial concentration, and temperature on the adsorption process to better understand the mechanisms of water treatment by the cellulose aerogels. Based on the discussion and summary, the potential of agro-waste sources in their value-added chain by developing efficient water treatment cellulose aerogels is comprehensively overviewed.

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“…Li et al prepared cellulose-based carbon aerogel that can adsorb 55.24 mg/g Cu(II) ions [214]. Wang et al synthesized carboxylated cellulose with magnetic nanoparticles for Cu(II) removal from water and reported the maximum adsorption capacity of 73.70 mg/g at 25 °C [215].…”

Section: Functionalization As a Tool To Enhance The Properties Of Ligmentioning

confidence: 99%

Biorefinery Approach for Aerogels

et al. 2020

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According to the International Energy Agency, biorefinery is “the sustainable processing of biomass into a spectrum of marketable bio-based products (chemicals, materials) and bioenergy (fuels, power, heat)”. In this review, we survey how the biorefinery approach can be applied to highly porous and nanostructured materials, namely aerogels. Historically, aerogels were first developed using inorganic matter. Subsequently, synthetic polymers were also employed. At the beginning of the 21st century, new aerogels were created based on biomass. Which sources of biomass can be used to make aerogels and how? This review answers these questions, paying special attention to bio-aerogels’ environmental and biomedical applications. The article is a result of fruitful exchanges in the frame of the European project COST Action “CA 18125 AERoGELS: Advanced Engineering and Research of aeroGels for Environment and Life Sciences”.

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Magnetic-controlled aerogels from carboxylated cellulose and MnFe2O4 as a novel adsorbent for removal of Cu(II)

Cited by 38 publications

References 40 publications

Silica Aerogels/Xerogels Modified with Nitrogen-Containing Groups for Heavy Metal Adsorption

Silica Aerogels/Xerogels Modified with Nitrogen-Containing Groups for Heavy Metal Adsorption

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Biorefinery Approach for Aerogels

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