An ultra-high surface area mesoporous carbon prepared by a novel MnO-templated method for highly effective adsorption of methylene blue

Zhou, Qiying; Jiang, Xia; Guo, Yinghui; Zhang, Guochen; Jiang, Wenju

doi:10.1016/j.chemosphere.2018.03.045

Cited by 30 publications

(14 citation statements)

References 28 publications

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“…Compared to other adsorber systems reported in literature, the specific surface area is about average . Adsorbers with higher surface area such as 1380 m 2 /g and 2134 m 2 /g were reported as well ,. Yet, the approach reported herein comes with all the flexibility to build a system of desired composition, e. g. in terms of silica nanoparticle amount and size and magnetic nanoparticle content, in a completely flexible, “Lego™ building block like” manner (compare Scheme ).…”

Section: Resultsmentioning

confidence: 81%

“…As a model dye, methylene blue is often in focus and so it is in this study as well. For this sample dye, it can be found that already many materials have been proposed in earlier works to be suitable as adsorbers like activated carbon, natural clay materials, bioadsorbers like algae, agricultural solid wastes and silica based systems ,…”

Section: Introductionmentioning

confidence: 99%

“…For this sample dye, it can be found that already many materials have been proposed in earlier works to be suitable as adsorbers like activated carbon, natural clay materials, bioadsorbers like algae, agricultural solid wastes and silica based systems. [4,[5][6][7][8] Typically, adsorber capacities around 10 to 1000 mg/g have been reported. [3] However, to achieve these adsorption results, typically, long contact times of several minutes to many hours were conducted.…”

Section: Introductionmentioning

confidence: 99%

“…[3] However, to achieve these adsorption results, typically, long contact times of several minutes to many hours were conducted. [6][7][8][9][10][11]12] In a practical application, however, a very high flow rate of dyed waste water, in the range of several 100 to 1000 of liters per hour is encountered and would need to be dealt with. This means that an adsorber system would only be in direct contact with the dyes in the waste water for a few seconds.…”

Section: Introductionmentioning

confidence: 99%

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Reusable Superparamagnetic Raspberry‐Like Supraparticle Adsorbers as Instant Cleaning Agents for Ultrafast Dye Removal from Water

et al. 2018

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Herein, a particle system of so‐called raspberry‐like supraparticles, capable of dye removal from water within a few seconds, is presented. These particles are micron sized and assembled of smaller silica nanoparticles as adsorber and iron oxide nanoparticles which act, due to their superparamagnetic properties, as switchable magnets. With this particle design, it is possible to tailor the adsorber structure and adjust the magnetic properties. Using very small silica nanoparticles (10 nm) combined with superparamagnetic iron oxide nanoparticles (10 nm) to build the supraparticles resulted in a system which could clarify a deeply methylene blue dye colored water within 60 seconds via dye adsorption on the particles and their subsequent magnetic separation. A comparison with assembled supraparticles from larger primary nanoparticles revealed the role of the primary nanoparticles to create a porous particle structure which comes with an apparent capillary effect to take up the dye. The system could be regenerated either thermally or by acid treatment and reused consecutively as magnetically recoverable adsorber. Due to the building block principle of the system, modification towards other adsorption tasks should be easily possible. This therefore turns such particle systems into an ideal platform to build tailored adsorbers.

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Section: Resultsmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reusable Superparamagnetic Raspberry‐Like Supraparticle Adsorbers as Instant Cleaning Agents for Ultrafast Dye Removal from Water

et al. 2018

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“…The adsorption capacity Qt (mg g −1 ) of the adsorbent is calculated according to the following equation: Figure 6 demonstrates that the CCT-BFO adsorbent demonstrated the best adsorption effect in the three amorphous carbon contained adsorbents because the peak absorbency of the MB aqueous solution added by the CCT-BFO dropped to near 0 within 25 min, while the peak absorbencies of the MB aqueous solutions added by CCT or CT-BFO dropped to only about half of the initial values within 150 min. The adsorption performance of the adsorbent has a considerable relationship with its specific surface area and pore size distribution [40,41]. Among the three adsorbents of CCT-BFO, CT-BFO, and CCT, the CCT-BFO had the highest specific surface area and the lowest volume ratio of micropores, which are unavailable for molecular adsorption [42,43], thus it could have the best adsorption performance.…”

Section: The Performances Of Mb Adsorption Of the Adsorbentsmentioning

confidence: 99%

Removal of Methylene Blue from Water by BiFeO3/Carbon Fibre Nanocomposite and Its Photocatalytic Regeneration

et al. 2018

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It is essential to prepare a highly efficient and reproducible adsorbent for purifying industrial dye wastewater. In this work, a novel and efficient BiFeO 3 /carbon fiber (CCT-BFO) nanocomposite adsorbent was prepared by the template method and through optimizing the preparation process. The morphology, physicochemical properties, and specific surface characteristics of the CCT-BFO were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) patterns, Fourier-transform infrared spectrometer (FTIR), and N 2 adsorption-desorption isotherm. The CCT-BFO could efficiently remove the Methylene blue (MB) from aqueous solutions, and the adsorption performance is not easily influenced by the environment. The equilibrium adsorption data were fitted to the classical models very well; the maximum capacity of adsorption MB onto the CCT-BFO was higher than many other reported adsorbents and the data of the adsorption kinetics were described by a pseudo-second-order model. Furthermore, the CCT-BFO can be recycled by photocatalytic regeneration. And the constant adsorption capacity was almost retained after recycling five times.

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Electrospinning Nanofibrous Sodium Alginate/β‐Cyclodextrin Composite Membranes for Methylene Blue Adsorption

Men

Gao

et al. 2022

Starch Stärke

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To effectively remove the toxic dyes from wastewater, sodium alginate (SA)/𝜷-cyclodextrin(𝜷-CD) nanofibrous composite membranes with average fiber diameters of 167-174 nm are obtained by an electrospinning method. The adsorption capacity of the SA/𝜷-CD membrane for methylene blue is 2776 mg g -1 , much higher than that of a pure SA membrane (1780 mg g -1 ). The incorporation of 𝜷-CD also improves the adsorption rate significantly. The adsorption mechanism is mainly the synergy of the electrostatic attraction of SA and the host-guest interaction of 𝜷-CD. Meanwhile, the SA/𝜷-CD nanofibrous membranes can be used in a wide pH range, and maintain excellent adsorption capacity after four cycles. The rapid adsorption efficiency and excellent adsorption capacity of SA/𝜷-CD nanofibrous membrane endows great potential in the field of wastewater treatment.

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An ultra-high surface area mesoporous carbon prepared by a novel MnO-templated method for highly effective adsorption of methylene blue

Cited by 30 publications

References 28 publications

Reusable Superparamagnetic Raspberry‐Like Supraparticle Adsorbers as Instant Cleaning Agents for Ultrafast Dye Removal from Water

Reusable Superparamagnetic Raspberry‐Like Supraparticle Adsorbers as Instant Cleaning Agents for Ultrafast Dye Removal from Water

Removal of Methylene Blue from Water by BiFeO3/Carbon Fibre Nanocomposite and Its Photocatalytic Regeneration

Electrospinning Nanofibrous Sodium Alginate/β‐Cyclodextrin Composite Membranes for Methylene Blue Adsorption

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