Superior CO2 Adsorption Capacity on N-doped, High-Surface-Area, Microporous Carbons Templated from Zeolite

Iron oxide (α-Fe2O3) as adsorbent was no longer new in CO2 adsorption studies. However, its contributions in the industry still in limited wherein lack of convincing results of quantifying of adsorbed CO2. This work presents an analysis for α-Fe2O3 was prepared by simple mixing method with identified the adsorption capacity that applied in CO2 capture. The synthesized α-Fe2O3 from different concentrations of precursor were analyzed using XRD, N2 adsorption-desorption isotherms with BET and BJH method, TEM, FTIR, CO2 adsorption at 298 K, CO2-TPD and TGA-DTG. It was noted that 2M concentration of precursor (s2M) with highest crystallite peaks shows highest surface area among all samples which indicative of well generated pores. The different concentration of precursor was found generated more porosity rather than particle size according to TEM micrograph. The sphere shape crystallite particle with high surface area (50.5 m2/g) and porosity were desirable properties in CO2 adsorption. Consequently, physically adsorbed CO2 with adsorption at 298 K was highest with adsorption capacity of at 17.0 mgCO2/gadsorbent. Finally, chemically adsorbed CO2 was successfully identified from CO2–TPD analysis with adsorption capacity of 0.19 mgCO2/gadsorbent and 1.31 mgCO2/gadsorbent at maximum desorption temperature of 375 °C and 749 °C respectively.

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Effective Poly (Cyclotriphosphazene-Co-4,4′-Sulfonyldiphenol)@rGO Sheets for Tetracycline Adsorption: Fabrication, Characterization, Adsorption Kinetics and Thermodynamics

Nanomaterials ◽

10.3390/nano11061540 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1540

Author(s):

Muhammad Ahmad ◽

Tehseen Nawaz ◽

Mohammad Mujahid Alam ◽

Yasir Abbas ◽

Shafqat Ali ◽

...

Keyword(s):

Adsorption Capacity ◽

Surface Area ◽

High Surface ◽

High Surface Area ◽

High Adsorption ◽

Clean Environment ◽

Equilibrium Data ◽

Langmuir Isotherm Model ◽

High Adsorption Capacity ◽

Adsorption Equilibrium Data

The development of excellent drug adsorbents and clarifying the interaction mechanisms between adsorbents and adsorbates are greatly desired for a clean environment. Herein, we report that a reduced graphene oxide modified sheeted polyphosphazene (rGO/poly (cyclotriphosphazene-co-4,4′-sulfonyldiphenol)) defined as PZS on rGO was used to remove the tetracycline (TC) drug from an aqueous solution. Compared to PZS microspheres, the adsorption capacity of sheeted PZS@rGO exhibited a high adsorption capacity of 496 mg/g. The adsorption equilibrium data well obeyed the Langmuir isotherm model, and the kinetics isotherm was fitted to the pseudo-second-order model. Thermodynamic analysis showed that the adsorption of TC was an exothermic, spontaneous process. Furthermore, we highlighted the importance of the surface modification of PZS by the introduction of rGO, which tremendously increased the surface area necessary for high adsorption. Along with high surface area, electrostatic attractions, H-bonding, π-π stacking and Lewis acid-base interactions were involved in the high adsorption capacity of PZS@rGO. Furthermore, we also proposed the mechanism of TC adsorption via PZS@rGO.

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Facile Synthesis of Nanoporous Carbons with High Surface Area and Their CO2 Adsorption Properties

Chemistry Letters ◽

10.1246/cl.150297 ◽

2015 ◽

Vol 44 (7) ◽

pp. 1004-1006

Author(s):

Takahito Mitome ◽

Yoshiaki Uchida ◽

Norikazu Nishiyama

Keyword(s):

Surface Area ◽

Co2 Adsorption ◽

High Surface ◽

High Surface Area ◽

Adsorption Properties ◽

Facile Synthesis ◽

Nanoporous Carbons

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Morphology dependent adsorption of methylene blue on trititanate nanoplates and nanotubes prepared by the hydrothermal treatment of TiO2

Water Science & Technology ◽

10.2166/wst.2016.519 ◽

2016 ◽

Vol 75 (2) ◽

pp. 350-357

Author(s):

Graham Dawson ◽

Wei Chen ◽

Luhua Lu ◽

Kai Dai

Keyword(s):

Methylene Blue ◽

Adsorption Capacity ◽

Surface Area ◽

Pore Volume ◽

Hydrothermal Reaction ◽

Low Cost ◽

High Surface ◽

High Surface Area ◽

High Capacity ◽

Adsorption Properties

The adsorption properties of two nanomorphologies of trititanate, nanotubes (TiNT) and plates (TiNP), prepared by the hydrothermal reaction of concentrated NaOH with different phases of TiO2, were examined. It was found that the capacity for both morphologies towards methylene blue (MB), an ideal pollutant, was extremely high, with the TiNP having a capacity of 130 mg/g, higher than the TiNT, whose capacity was 120 mg/g at 10 mg/L MB concentration. At capacity, the well-dispersed powders deposit on the floor of the reaction vessel. The two morphologies had very different structural and adsorption properties. TiNT with high surface area and pore volume exhibited exothermic monolayer adsorption of MB. TiNP with low surface area and pore volume yielded a higher adsorption capacity through endothermic multilayer adsorption governed by pore diffusion. TiNP exhibited a higher negative surface charge of −23 mV, compared to −12 mV for TiNT. The adsorption process appears to be an electrostatic interaction, with the cationic dye attracted more strongly to the nanoplates, resulting in a higher adsorption capacity and different adsorption modes. We believe this simple, low cost production of high capacity nanostructured adsorbent material has potential uses in wastewater treatment.

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CO2 Adsorption Property of Amine-Modified Amorphous TiO2 Nanoparticles with a High Surface Area

Colloids and Interfaces ◽

10.3390/colloids2030025 ◽

2018 ◽

Vol 2 (3) ◽

pp. 25 ◽

Cited By ~ 1

Author(s):

Misaki Ota ◽

Yuichiro Hirota ◽

Yoshiaki Uchida ◽

Norikazu Nishiyama

Keyword(s):

Tio2 Nanoparticles ◽

Surface Area ◽

Co2 Adsorption ◽

Adsorption Property ◽

High Surface ◽

High Surface Area ◽

Amorphous Tio2

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Effect of Sodium Periodate on the Adsorption Capacity of Silica-Lignin from Rice Husk on Chromium(VI)

Jurnal Kimia Sains dan Aplikasi ◽

10.14710/jksa.22.6.242-249 ◽

2019 ◽

Vol 22 (6) ◽

pp. 242-249 ◽

Cited By ~ 2

Author(s):

Yati B. Yuliyati ◽

Solihudin Solihudin ◽

Atiek Rostika Noviyanti

Keyword(s):

Adsorption Capacity ◽

Surface Area ◽

Sodium Periodate ◽

High Surface ◽

Sol Gel ◽

High Surface Area ◽

Adsorption Model ◽

Chromium Vi ◽

Reactive Groups ◽

Isotherm Adsorption

Reactive groups such as silanol, hydroxyl, and carbonyl groups in silica-lignin composites play a role in binding to chromium(VI) ions. The activation of functional groups in silica-lignin can be increased by the addition of an activator such as sodium periodate, which can also oxidize the lignin monomer (guaiasil) to ortho-quinone. This study aimed to obtain silica-lignin composites from rice husks activated by sodium periodate with a high surface area. Composite absorption was tested on chromium(VI) adsorption. Silica-lignin isolation was carried out by using the sol-gel method at concentrations of sodium hydroxide 5, 10, 15, and 20% (b/b). Silica-lignin activated with sodium periodate 10% (b/b) had the smallest particle size of about 8μm, with a surface area of 14.0888 m2.g-1 and followed Halsey isotherm adsorption model, with an adsorption capacity of 0.3054 mg.g-1.

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High-Surface-Area Carbon Molecular Sieves for Selective CO2 Adsorption

ChemSusChem ◽

10.1002/cssc.201000083 ◽

2010 ◽

Vol 3 (8) ◽

pp. 974-981 ◽

Cited By ~ 253

Author(s):

Anass Wahby ◽

José M. Ramos-Fernández ◽

Manuel Martínez-Escandell ◽

Antonio Sepúlveda-Escribano ◽

Joaquín Silvestre-Albero ◽

...

Keyword(s):

Surface Area ◽

Molecular Sieves ◽

Co2 Adsorption ◽

High Surface ◽

High Surface Area ◽

Carbon Molecular Sieves

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Bifunctional Materials for CO₂ Adsorption: Short Review

Journal of Chemical Engineering and Industrial Biotechnology ◽

10.15282/jceib.v7i2.7021 ◽

2021 ◽

Vol 7 (2) ◽

pp. 15-19

Author(s):

S. M. Yusof ◽

L. P. Teh

Keyword(s):

Surface Area ◽

Active Sites ◽

Co2 Adsorption ◽

High Surface ◽

Co Adsorption ◽

High Surface Area ◽

Short Review ◽

High Dispersion ◽

High Porosity ◽

Adsorption Performance

In recent years, there has been growing interest in adsorbents with high surface area, high porosity, high stability and high selectivity for CO2 adsorption. By the incorporation of the additive on the supports such as zeolite, silica, and carbon, the physicochemical properties of the adsorbent and CO2 adsorption performance can be enhanced. In this review, we focus on the overview of bifunctional materials (BFMs) for CO2 adsorption. The findings of this study suggests that the high surface area and high porosity of the support provide a good medium for high dispersion and accessibility of additives (amine or metal oxide), enhancing the CO2 adsorption efficiency. The excessive additive however may lead to a decrease of CO2 adsorption performance due to pore blockage and the decrease of active sites for CO2 interactions. The synergistic relationship of the supporting material and additive is significant towards the enhancement of CO2 adsorption.

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Template-Method Synthesis of High-Surface-Area Monolithic Carbon Aerogels and Their Applications for Hydrogen and Deuterium Adsorption

International Journal of Nanoscience ◽

10.1142/s0219581x17500107 ◽

2017 ◽

Vol 16 (05n06) ◽

pp. 1750010 ◽

Cited By ~ 2

Author(s):

Bowei Chen ◽

Xiaojun Wang ◽

Jiayi Zhu ◽

Yutie Bi ◽

Xuan Luo ◽

...

Keyword(s):

Adsorption Capacity ◽

Surface Area ◽

Hydrogen Adsorption ◽

High Surface ◽

High Surface Area ◽

Carbon Aerogel ◽

Molar Ratio ◽

Template Method ◽

Carbon Aerogels ◽

Polymer Templates

In this work, novel monolithic carbon aerogels obtained by using a polymer template method were characterized and evaluated for their applications in the hydrogen and deuterium adsorption capacity. The properties (i.e., surface area, pore size distribution, hydrogen and deuterium adsorption capacities, etc.) of the carbon aerogels were affected by the polymer templates. The results showed that the carbon aerogel with the molar ratio of polyacrylic acid (PAA) to zinc chloride (ZnCl2) being 0.75:40 was featured the highest surface area (1806 m2/g) and had the highest hydrogen adsorption capacity. Moreover, the deuterium adsorption capacity of the carbon aerogel was to be further elucidated.

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