Porous carbon with small mesoporesas an ultra-high capacity adsorption medium

Gao, Biaofeng; Zhou, Haitao; Chen, De; Yang, Jianhong

doi:10.1016/j.apsusc.2017.05.112

Cited by 13 publications

(4 citation statements)

References 54 publications

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“…Different physicochemical methods, for example, adsorption, coagulation/occulation, catalytic ozonation, and electrocatalytic degradation, have been applied to eliminate dyes from aqueous matrices. [7][8][9][10] Among these methods, adsorption is the most advantageous water treatment technique because of its low process cost, simple operation, minimal sludge production, high efficiency, and reusability. [11][12][13] Various materials have been used to adsorb organic dyes, such as clays, mesoporous gels, organic-inorganic hybrids, magnetic particles, activated carbon, and graphene oxide (GO).…”

Section: Introductionmentioning

confidence: 99%

Preparation of gemini surfactant/graphene oxide composites and their superior performance for Congo red adsorption

Liu

Yan

et al. 2019

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Preparation of gemini surfactant/graphene oxide composites and their superior performance for Congo red adsorption

Liu

Yan

et al. 2019

RSC Adv.

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“…A strong perpendicular electrostatic field is formed, and so electrostatic attraction occurs between MIL-53(Al) and RhB molecules. The strongly charged surface of MIL-53(Al) leads to the surface area occupied by RhB molecules becoming smaller, which increases the adsorption capacity of MIL-53 (Al) . Besides, in Figure b, the appearance of Al 2p peaks at 75.03 and 74.64 eV can be attributed to the Al–O bond, indicating the existence of the aluminum metal center in MIL-53(Al).…”

Section: Resultsmentioning

confidence: 96%

“…The decrease of the characteristic peak intensity after RhB adsorption may be caused by the reaction between dyes with surface functional groups of MIL-53(Al). Figure a shows the high-resolution C 1s curve of MIL-53(Al); the three different peaks centered at 289.13, 284.94, and 284.81 eV can correspond to −COOH, C–C, and benzene ring. , Thus, the MIL-53(Al) surface consists of COO • formed by the hydrolysis of −COOH. A strong perpendicular electrostatic field is formed, and so electrostatic attraction occurs between MIL-53(Al) and RhB molecules.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Stable MIL-53(Al) for Excellent Removal of Rhodamine B

Tan

et al. 2022

Langmuir

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Adsorptive purification of organic dyes in wastewater is significant to protect the water environment. Herein, MIL-53(Al) was successfully fabricated through a facile and versatile solvothermal strategy. The stability of MIL-53(Al) under high temperature, acid, base, and peroxide conditions was investigated. The porous MIL-53(Al) had high chemical stability, and the thermal stability reached up to 500 °C, which provided a good foundation for dye removal. MIL-53(Al) showed excellent adsorption performance. The maximum adsorption capacity of MIL-53(Al) for rhodamine B (RhB) can reach 1547 mg g–1 under 303 K, and the corresponding removal efficiency exceeded 90% at the equilibrium time (120 min). The Langmuir model and pseudo-second-order model can well fit RhB adsorption on MIL-53(Al). Thermodynamic study and activation energy values over the range of 298–323 K revealed that the adsorption of RhB was a spontaneous and endothermic physical process in nature. The batch experimental results, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared (FTIR) spectroscopy analyses suggested that the hydrogen bonding and electrostatic interactions between the hydroxyl/carboxyl groups of MIL-53(Al) and RhB were the primary adsorption mechanisms. Besides, MIL-53(Al) had a higher selectivity to RhB than the coexisting ions in aqueous solution and a superior adsorption performance after five cycles.

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“…It is interesting to note that the adsorption capacity of MB for MCPCM@La 2 O 2 CO 3 at ambient temperature was significantly higher than the adsorption capacity when increasing the temperature. The attachment of La 2 O 2 CO 3 and Fe 3 O 4 to the surface of porous carbon and electrostatic adsorption of MB by O 2– and CO 3 2– in the oxides were potential causes of this . It was discovered that the increase in the temperature did not encourage the release of O 2– .…”

Section: Resultsmentioning

confidence: 99%

Construction of Lanthanide Magnetic Bio-Based Porous Carbon Materials with Beam and Column Structure and Its Synergistic Adsorption Performance

Zhang,

Guo,

Jia

et al. 2023

ACS Appl. Mater. Interfaces

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Biochar porous carbon material (BPCM) has extraordinary adsorption properties and is being widely used in different fields around the world. The pore structure of BPCM is liable to collapse, and mechanical properties are inferior; hence, the focus is on developing a new ″powerful″ structure of functional BPCM. Rare earth elements with characteristic f orbitals are used as pore and wall strengthening units in this work. The new ″beam and column structure″ BPCM was synthesized by the aerothermal method, and then, the magnetic BPCM was prepared. The results showed that the designed synthesis route was reasonable, BPCM with a steady-state beam and column structure was attained, and the La element played a stabilizing role in maintaining the overall BPCM. The La hybridization exhibits the characteristic of ″the stronger column and weaker beam″, and the La group is the ″column″ to strengthen the BPCM as the ″beam″. The functionalized BPCM (lanthanum-loaded magnetic chitosan-based porous carbon materials, MCPCM@La2O2CO3) obtained exhibited a transcendent efficient adsorption capacity with an average adsorption rate of 6.640 mg·g–1·min–1 and over 85% removal of different types of dye pollutants, which exceeded the adsorption performance of the materials of most other BPCMs. Ultrastructural analysis revealed that MCPCM@La2O2CO3 has a huge specific surface area of 1458.513 m2·g–1 and a magnetization value of 16.560 emu·g–1 for MCPCM@La2O2CO3. A new theoretical model for the adsorption of MCPCM@La2O2CO3 (multiple adsorption coexistence equation) was established. The theoretical equations clarify that the mechanism of pollutant removal by MCPCM@La2O2CO3 is different from the traditional adsorption model, presenting a mechanism of coexistence of multiple adsorption types, displaying a monolayer–multilayer adsorption mechanism, influenced by the synergistic effects of H bonding, electrostatic attraction, π–π conjugation, and ligand interaction. The rapid coordination of the d orbitals of La is an obvious factor in enhancing the adsorption efficiency.

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Porous carbon with small mesoporesas an ultra-high capacity adsorption medium

Cited by 13 publications

References 54 publications

Preparation of gemini surfactant/graphene oxide composites and their superior performance for Congo red adsorption

Preparation of gemini surfactant/graphene oxide composites and their superior performance for Congo red adsorption

Fabrication of Stable MIL-53(Al) for Excellent Removal of Rhodamine B

Construction of Lanthanide Magnetic Bio-Based Porous Carbon Materials with Beam and Column Structure and Its Synergistic Adsorption Performance

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