Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Pang, Hongwei; Wu, Yihan; Wang, Xiangxue; Hu, Baowei

doi:10.1002/asia.201900493

Cited by 148 publications

(29 citation statements)

References 89 publications

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“…Although we reviewed the adsorption of organic pollutants by biochar and biochar-supported materials in the abovementioned section, the simultaneous elimination of both organic and inorganic pollutants from wastewater is more important to understand the application of carbon materials in real wastewater treatment (Pang et al 2019a;Wang et al 2019bWang et al , c, d, 2020cZhao et al 2019c). The heavy metal ions and radionuclides, released from the industry, agriculture and mining, exist ubiquitously in the natural environment.…”

Section: Sorption Of Heavy Metal Ions and Radionuclidesmentioning

confidence: 99%

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Jin

et al. 2020

Biochar

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273

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Biochar have received multidisciplinary attention because of their extraordinary physicochemical properties. In this review, the application of biochar and biochar-based materials for the efficient elimination of organic and inorganic pollutants are summarized. The sorption of organic chemicals and heavy metal ions/radionuclides, degradation/transformation of organic pollutants, and sorption-reduction-solidification of high-valent metal ions are described in detail. The interaction mechanism at molecular level from advanced spectroscopic techniques and theoretical calculations is discussed. Finally, the challenges in the application of biochar and biochar-supported materials in the immobilization of heavy metal ions and photocatalytic degradation of persistent organic pollutants in soils or wastewater are pointed out. This review is helpful for the graduate students to understand the recent works about biochar and biochar-supported materials in environmental pollutants management.

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Section: Sorption Of Heavy Metal Ions and Radionuclidesmentioning

confidence: 99%

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Jin

et al. 2020

Biochar

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273

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“…Some of these structures can be pointed to the small size and increased surface to volume which gives them different thermal, mechanical and electronic properties. These nanomaterials include metals, polymers, semiconductors, and carbon-based materials 8,9 . In the early 1990s, researchers described the spherical symmetric core-shell structures.…”

mentioning

confidence: 99%

Preparation of a magnetic polystyrene nanocomposite for dispersive solid-phase extraction of copper ions in environmental samples

Mehdinia

Salamat

Jabbari

2020

Sci Rep

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the core shell nanostructure of magnetic polystyrene (pS@fe 3 o 4) was prepared and its physic-chemical properties were studied ft-iR, SeM, teM, VSM and Bet + BJH. the new adsorbent was applied in the dispersive solid phase extraction technique for measuring copper ions in water, Soil and oyster samples. Analysis is carried out using a flame atomic absorption spectrometry system. Effective parameters on extraction efficiency, such as pH of extraction solution, sorbent dosage, contact time, concentration and volume of desorption eluent and desorption time were optimized using one at a time method. n 2 adsorption-desorption experiment resulted in high BET surface area (32.002 m 2 g −1) and large pore volume (0.1794 cm 3 g −1) for pS@ fe 3 o 4 nanocomposite. Under the optimum conditions, a calibration curve within the range of 5-40 ng mL −1 with an appropriate coefficient of determination (R 2) of 0.9946 was obtained. Preconcentration factor (PF) and limit of detection (LOD) were found to be 55 and 1.6 ng mL −1 , respectively. the repeatability and reproducibility for three replicate measurements at the concentration of 25 ng mL −1 were 2.5%-1.4%, respectively. The Freundlich adsorption isotherm and pseudo-second-order kinetic model were consistent to experimental data in adsorption mechanism study. The maximum adsorption capacity was 19.56 mg g −1 for Cu (II). Finally, the efficiency of the method was investigated for analysis of the copper in environmental samples and good relative recoveries (RR%) were obtained within the range of 99.2% to 101.2%. Environmental pollutants are one of the most important global challenges that cause the destruction of natural ecosystems. The development of industry, power plants, mining industries as well as agricultural activities helps to increase environmental pollutants in different forms and concentrations 1. Among these pollutants, heavy metals which enter the environment through industrial activities, natural deposits, plating plants, mining and alloy production 2 are important. The presence of heavy metals has adverse effects such as high blood pressure, speech disorders and memory loss on human health 3. High concentrations level of copper ions, as one of the environmental pollutants, cause cancer of the lungs, gastrointestinal and mucous irritation, liver and kidney problems 4. The high concentrations of copper ions in biological systems (more than 0.15 mg L −1 for fish and 0.01 mg per liter for invertebrates) can be fatal. In the agricultural sector, copper has the role of regulating the growth and reproduction of plants, and optimizing the amount of this element is important because copper deficiency can have adverse effects on photosynthesis, reproduction, protein formation and auxin regulation 5. Due to the fact that heavy metals are very stable and soluble, they can be absorbed by living organisms, so the removal of these metals is of great importance. Various methods e.g. membrane filtration, ion exchange, absorption, chemical precipitation, liquid-liquid extraction ...

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“…Polymer composites are defined as a combination of polymers with other organic or inorganic materials to provide new material with target properties, like low density, toughness, stiffness, thermal behavior, chemical and mechanical stability, and other specific properties depending on the target of use. A lot of polymer composites were introduced with significant use in water treatment and desalination, including graphene-based composites, carbon-based composites, and clay-based composites [1][2][3]. e polymer composite research was offered due the need for materials with better adsorption and removal characteristics of metal ions, dyes, and other toxic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Current Advances of Polymer Composites for Water Treatment and Desalination

Berber

2020

Journal of Chemistry

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Over the past five years, a lot of research activities in polymer composites were done in order to improve environmental sustainability and to present advantages for commercial applications of water treatment and desalination. Polymers offered tunable properties, improved processability, remarkable stability, high surface area for fast decontamination, selectivity to eliminate different pollutants, and cost-cutting of water treatment. Hence, the development of polymeric materials is one of the future directions to meet the environmental water standards and to supply the water requirements of the growing populations. This review highlighted the very recent achievements in fabrication, characterization, and applications of polymeric composites used for water treatment and desalination. The polymeric modifications, the addition of functional groups, and the assemblies of nanomaterials were also discussed in detail. In particular, great attention was paid to the recent advances in polymer/polymer composites, polymer/carbon composites, and polymer/clay composites, presenting their usage in the removal of various types of contaminants, e.g., metal ions, dyes, and other toxic pollutants. The review also summarized the main advantages and disadvantages of the different adsorbent materials. Specific attention was paid to the mechanism of adsorption, including chemisorption and physisorption mechanisms. In addition, the challenges and the future perspectives were identified to reach the optimal performance of the different adsorbents.

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Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Cited by 148 publications

References 89 publications

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials

Preparation of a magnetic polystyrene nanocomposite for dispersive solid-phase extraction of copper ions in environmental samples

Current Advances of Polymer Composites for Water Treatment and Desalination

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