Fluorination modification enhanced the water resistance of Universitetet i Oslo-67 for multiple volatile organic compounds adsorption under high humidity conditions: Mechanism study

Bi, Fukun; Wei, Jiafeng; Ma, Shuting; Zhao, Qiangyu; Zhang, Jingrui; Qiao, Rong; Xu, Jingcheng; Liu, Baolin; Huang, Yuandong; Zhang, Xiaodong

doi:10.1016/j.jcis.2024.03.192

Cited by 35 publications

(1 citation statement)

References 70 publications

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“…Several methods for vapor benzene removal, such as catalytic oxidation [15], membrane technology [16], catalysts [17], photocatalysis [18], non-thermal plasma oxidation [19], and adsorption [20], have been introduced. Amongst, adsorption is considered as one of the highly attractive and cost-effective processes, due to its simplicity, efficiency, low cost, and recyclability of the adsorbent.…”

Section: Introductionmentioning

confidence: 99%

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

Isinkaralar

2024

Biomass Conv. Bioref.

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For the present study, the activated carbon were obtained from Lotus corniculatus L. as waste biomass using carbonization at 700 °C and alkali potassium hydroxide (KOH) chemical activation technique. Single gaseous benzene (C6H6) adsorption (SGBA) experiments were performed to benchmark the efficiency of the L. corniculatus-derived activated carbons (LCACs), which were LCAC2 (609 m2 g−1, KOH 1:2 w/w), LCAC3 (742 m2 g−1, KOH 1:3 w/w), and LCAC4 (826 m2 g−1, KOH 1:4 w/w), respectively. Also, the physicochemical properties of LCACs were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and proximate-elemental assessment. The isotherm models (Langmuir and Freundlich) of C6H6 demonstrate the complex adaptation results of LCAC4 at different relative humidity (RH) levels, and Freundlich isotherm is highly suitable to C6H6/LCAC4 as multilayer adsorption. Kinetic behavior was also analyzed and showed that of C6H6 is well illustrated by the pseudo second order (PSOM). The C6H6 competitive adsorption of LCAC2, LCAC3, and LCAC4 at 25 °C + 0 RH%, 25 °C + 80 RH%, 45 °C + 0 RH%, and 45 °C + 80 RH% corresponds to reductions of 12.9–11.6%, 7.8–11.5%, and 9.9–18.4%. The LCAC4 is confirmed to be a perfect adsorbent in the elimination of a single gaseous stream at 45 °C + 0 RH%. Regeneration showed that the LCAC4 maintained more than 25% of the initial adsorption capacity after five repeated adsorption–desorption cycles. The promising properties of LCAC4 are recommended to be exploited for the other volatile organic compounds in the gas phase in indoor environments, under the best conditions.

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Section: Introductionmentioning

confidence: 99%

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

Isinkaralar

2024

Biomass Conv. Bioref.

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A New Generation of Activated Carbon Adsorbent Microstructures

Grigor,

Carver,

Bulan

et al. 2024

Advanced Science

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This work presents the successful manufacture and characterization of bespoke carbon adsorbent microstructures such as tessellated (TES) or serpentine spiral grooved (SSG) by using 3D direct light printing. This is the first time stereolithographic printing has been used to exert precise control over specific micromixer designs to quantify the impact of channel structure on the removal of n‐butane. Activated microstructures achieved nitrogen Brunauer Emmett Teller (BET) surface areas up to 1600 m2 g−1 while maintaining uniform channel geometries. When tested with 1000 ppm n‐butane at 1 L min−1, the microstructures exceeded the equilibrium loading of commercial carbon‐packed beds by over 40%. Dynamic adsorption breakthrough testing using a constant Reynolds number (Re 80) shows that complex micromixer designs surpassed simpler geometries, with the SSG geometry achieving a 41% longer breakthrough time. Shorter mass transfer zones were observed in all the complex geometries, suggesting superior kinetics and carbon structure utilization as a result of the micromixer‐based etched grooves and interlinked channels. Furthermore, pressure drop testing demonstrates that all microstructures had half the pressure drop of commercial carbon‐packed beds. This study shows the power of leveraging 3D printing to produce optimized microstructures, providing a glimpse into the future of high‐performance gas separation.

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Activation of Peroxymonosulfate by a Mn_0.7Co_0.5O₂@C Catalyst for the Degradation of Tetracycline

Huang,

Zhou,

Zhang

et al. 2024

ChemistrySelect

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Persulfate advanced oxidation technologyshows great potential in the removal of organic pollutants. Inthis study, a Mn0.7Co0.5O2@C catalyst wassynthesized from MnCO3‐ZIF‐67 precursor via calcination and employedto activate peroxymonosulfate (PMS) for the degradation of tetracycline (TC).The catalyst, characterized by a plethora of active sites and superior electrontransfer capabilities, mitigated the sluggish reaction kinetics associated withweak electron transfer. Degradation experiments demonstrated an 87.54% removalefficiency within 60 minutes using 10 mg of catalyst, outperforming PMS aloneby 2.3‐fold. The Mn0.7Co0.5O2@C/PMS system'ssynergistic effects and mechanisms were elucidated, with experiments confirmingthe generation of reactive species including singlet oxygen (1O2), sulfate radicals (SO4•−), and hydroxyl radicals (•OH).The catalyst's exceptional performance is attributed to the valence cycling ofMn and Co ions, facilitating PMS activation and the production of radicals. Additionally, the lattice oxygen within the catalyst is oxidized to form reactive oxygenspecies, which, in conjunction with oxygen vacancies, react with PMS to producenon‐radical species (1O2). The synergistic oxidationeffects of these free radicals and non‐radicals ultimately facilitate theremoval of TC, offering a novel approach for the treatment of organicwastewater with persulfate‐based advanced oxidation processes.

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Fluorination modification enhanced the water resistance of Universitetet i Oslo-67 for multiple volatile organic compounds adsorption under high humidity conditions: Mechanism study

Cited by 35 publications

References 70 publications

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

A New Generation of Activated Carbon Adsorbent Microstructures

Activation of Peroxymonosulfate by a Mn_0.7Co_0.5O₂@C Catalyst for the Degradation of Tetracycline

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Fluorination modification enhanced the water resistance of Universitetet i Oslo-67 for multiple volatile organic compounds adsorption under high humidity conditions: Mechanism study

Cited by 35 publications

References 70 publications

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

Converting lignocellulosic biomass into mesoporous carbons for the assessment of single adsorption equilibrium: the competing role of moisture and temperature on gaseous benzene adsorption

A New Generation of Activated Carbon Adsorbent Microstructures

Activation of Peroxymonosulfate by a Mn0.7Co0.5O2@C Catalyst for the Degradation of Tetracycline

Contact Info

Product

Resources

About

Activation of Peroxymonosulfate by a Mn_0.7Co_0.5O₂@C Catalyst for the Degradation of Tetracycline