Characterization and adsorption behaviors of a novel synthesized mesoporous silica coated carbon composite

SaiWang,; Xu, Shaohai; Liu, Chengbao; Chen, Feng; Wang, Dongtian; Liu, Shou-Qing; Chen, Zhigang; Wu, Zhengying

doi:10.1016/j.cjche.2015.07.014

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…It was found that correlation coefficients from the pseudo-second-order model were higher than that of the pseudo-first-order model for all of the MB concentrations. This indicated that the calculated adsorption capacity at equilibrium from pseudo-second-order model would performed better, which is consistent with other studies [43,44]. It was also confirmed that the chemisorption is the main rate controlled step during the adsorption process of BSNC-800-4 and the valence forces through electrons sharing involved between the hydrophilic edges sites of BSNC-800-4 and the MB solution.…”

Section: Resultssupporting

confidence: 89%

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Wang

Xiang

et al. 2019

Molecules

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Bamboo shoots, a promising renewable biomass, mainly consist of carbohydrates and other nitrogen-related compounds, such as proteins, amino acids and nucleotides. In this work, nitrogen self-doped activated carbons derived from bamboo shoots were prepared via a simultaneous carbonization and activation process. The adsorption properties of the prepared samples were evaluated by removing methylene blue from waste water. The factors that affect the adsorption process were examined, including initial concentration, contact time and pH of methylene blue solution. The resulting that BSNC-800-4 performed better in methylene blue removal from waste water, due to its high specific surface area (2270.9 m2 g−1), proper pore size (2.19 nm) and relatively high nitrogen content (1.06%). Its equilibrium data were well fitted to Langmuir isotherm model with a maximum monolayer adsorption capacity of 458 mg g−1 and a removal efficiency of 91.7% at methylene blue concentration of 500 mg L−1. The pseudo-second-order kinetic model could be used to accurately estimate the carbon material’s (BSNC-800-4) adsorption process. The adsorption mechanism between methylene blue solution and BSNC-800-4 was controlled by film diffusion. This study provides an alternative way to develop nitrogen self-doped activated carbons to better meet the needs of the adsorption applications.

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Section: Resultssupporting

confidence: 89%

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Wang

Xiang

et al. 2019

Molecules

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“…The adsorption data for MB onto mSiO 2 and the FFeGx materials were analyzed by Langmuir and Freundlich equations to investigate the relationship between the adsorbate molecules and adsorbent in solutions. 44 Sorption isotherms for mesoporous mSiO 2 support, FFeG0.02, FFeG0.04, and FFeG0.12 fit the Langmuir model (R L = 0.94−0.98) well (Figure 5, Table 2). This implies that the surfaces of those materials are more homogeneous than heterogeneous, and the accessible sorption sites are energetically equivalent to the MB molecules during adsorption.…”

Section: Resultsmentioning

confidence: 76%

Section: Results and Discussionmentioning

confidence: 88%

Adsorption and Synergetic Fenton-like Degradation of Methylene Blue by a Novel Mesoporous α-Fe₂O₃/SiO₂ at Neutral pH

Zhu

Zhang

et al. 2018

Ind. Eng. Chem. Res.

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In this study, a mesoporous α-Fe 2 O 3 /SiO 2 composite with highly ordered mesostructure and large surface area and pore volume was feasibly fabricated via a spontaneous infiltration route by employing the template-containing mesoporous SiO 2 as support. Fe species are highly dispersed in the framework of the SiO 2 with relatively low Fe content. At high Fe content (rFe:Si = 0.12), α-Fe 2 O 3 nanocrystals with an average size of about 50 nm were incorporated in the matrix of the SiO 2 , existing as both framework and extra-framework forms. The synthesized α-Fe 2 O 3 / SiO 2 composite shows a high adsorption capacity (90 mg•g −1 ) and the superior heterogeneous Fenton-like catalytic activity for the removal of 300 mg•L −1 methylene blue from aqueous solutions (removal efficiency = 100%). The α-Fe 2 O 3 /SiO 2 composite also has a remarkable adsorption and catalysis performance in a wide pH range of 3.0−11.0 and exhibits an excellent stability and reusability.

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Synthesis of mesoporous manganese dioxide/expanded graphite composite and its lithium-storage performance

et al. 2020

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Characterization and adsorption behaviors of a novel synthesized mesoporous silica coated carbon composite

Cited by 5 publications

References 24 publications

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Adsorption and Synergetic Fenton-like Degradation of Methylene Blue by a Novel Mesoporous α-Fe₂O₃/SiO₂ at Neutral pH

Synthesis of mesoporous manganese dioxide/expanded graphite composite and its lithium-storage performance

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Characterization and adsorption behaviors of a novel synthesized mesoporous silica coated carbon composite

Cited by 5 publications

References 24 publications

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Nitrogen Self-Doped Activated Carbons Derived from Bamboo Shoots as Adsorbent for Methylene Blue Adsorption

Adsorption and Synergetic Fenton-like Degradation of Methylene Blue by a Novel Mesoporous α-Fe2O3/SiO2 at Neutral pH

Synthesis of mesoporous manganese dioxide/expanded graphite composite and its lithium-storage performance

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Product

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Adsorption and Synergetic Fenton-like Degradation of Methylene Blue by a Novel Mesoporous α-Fe₂O₃/SiO₂ at Neutral pH