Adsorption of phenol from aqueous solution by a hierarchical micro-nano porous carbon material

Liu, Chengbao; Chen, Zhigang; Ni, Chaoying; Chen, Feng; Gu, Cheng; Cao, Yuliang; Wu, Zhengying; Li, Ping

doi:10.1007/s12598-012-0562-z

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…On the basis of a careful comparison of the Hg 2+ adsorbability onto several typical adsorbents summarized in Table 5 [ 62 , 63 , 64 , 65 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 ], the PBT nanosheets have an even stronger adsorbability toward Hg 2+ solutions than the other reported adsorbents, to the best of our knowledge. The adsorption ratio of magnetic functional metal-organic Fe 3 O 4 @Zn(btb) nanospheres [ 68 ] and cross-linked magnetic chitosan-phenylthiourea (CSTU) [ 69 ] at the dosage of 1.0 g L −1 toward 200 mg L −1 Hg 2+ is only 64.93% and 67.50%, respectively.…”

Section: Resultsmentioning

confidence: 94%

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Huang

Min

et al. 2017

Polymers

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Poly(2,5-dimercapto-1,3,4-thiadiazole) (PBT) nanosheets were synthesized by chemical oxidative synthesis under mild conditions. The media, oxidant species, monomer concentrations, oxidant/monomer molar ratio, and temperature were optimized to achieve higher yields and better performance. The molecular structure, morphology, and properties of the nanosheets were analyzed by Fourier transform infrared (FT-IR), ultraviolet-visible (UV-Vis), and fluorescence spectroscopies, wide-angle X-ray diffraction (WAXD), matrix-assisted laser desorption/ionization/time-of-flight (MALDI-TOF) mass spectrometry, X-ray photoelectron spectroscopy (XPS), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), and simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC). It was found that the polymerization of 2,5-dimercapto-1,3,4-thiadiazole occurs via dehydrogenation coupling between two mercapto groups to form the -S-S-bond. PBTs show the highest polymerization yield of up to 98.47% and form uniform nanosheets with a thickness of 89~367 nm. poly(2,5-dimercapto-1,3,4-thiadiazole) polymers (PBTs) exhibit good chemical resistance, high thermostability, interesting blue-light emitting fluorescence, and wonderful heavy metal ion adsorption properties. Particularly, the PBT nanosheets having a unique synergic combination of three kinds of active -S-, -SH, and =N-groups with a moderate specific area of 15.85 m 2 g −1 exhibit an ultra-rapid initial adsorption rate of 10,653 mg g −1 h −1 and an ultrahigh adsorption capacity of up to 680.01 mg g −1 for mercury ion, becoming ultrafast chelate nanosorbents with a high adsorption capacity. With these impressive properties, PBT nanosheets are very promising materials in the fields of water treatment, sensors, and electrodes.

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Section: Resultsmentioning

confidence: 94%

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Huang

Min

et al. 2017

Polymers

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“…In the same matter, other studies have examined the removal of phenolic compounds using various nanoparticles. For example, Liu et al examined the ability of hierarchical micronanoporous carbon material in the removal of phenol [32]. In another study by Kim et al , nanostructured silicas functionalized with phenyl groups were able to uptake bisphenol from an aqueous solution [33].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics

Safwat

Mohamed

Meshref

et al. 2022

Adsorption Science & Technology

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The removal of phenolic compounds from aqueous solutions using novel adsorption techniques becomes a key research item. Of those, nanoparticles in particular, the low-cost and the high-strength aluminum oxide nanoparticles showed promising results in pollutant uptake and increase in the adsorption efficiency. This study examined various physicochemical process parameters such as temperature, pH, initial phenol concentration, and adsorbent doses, in addition to the impact of those parameters on the adsorption removal mechanism of phenol. The results highlighted that aluminum oxide nanoparticles successfully exhibited superior phenol removal from an aqueous solution in addition to a high potential regeneration of the consumed nanoparticles by HCl. For the adsorbent mass of 0.5 g, phenol adsorption uptake reached 92%. Kinetic studies performed using several models demonstrated the data best fitting with a pseudo-second-order kinetic model. Examining equilibrium studies of various isotherms, the adsorption data of phenol into aluminum oxide nanoparticles was confirmed to be controlled by film diffusion and best represented by the Langmuir isotherm. The maximum capacity of adsorption was 16.97 mg/g. For thermodynamics studies, the results indicated that the adsorption process can vary between endothermic and exothermic reactions. Such relative differences in heat generation and spontaneity in adsorption processes were demonstrated and confirmed by principal component analysis (PCA). This evidence is key for future investigations for the efficiency of adsorption conditions concerning the contaminant type and adsorbate compounds.

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“…Furthermore, the static adsorption kinetics and adsorption capacity of phenol on A-s-10 is respectively faster and higher than in the case of other aluminas such as spindle-like g-Al 2 O 3 (21.0 mg g À1 aer 6 h), 9 dodecyl sodium sulfate-modied neutral alumina (3.75 mg g À1 ), 45 and the activated alumina particulates of 63-150 mm without any affinity for phenol adsorption, 46 whereas still lower than that of the hierarchical micro-nano porous carbon and the commercial activated carbon (241.2 mg g À1 and 220.4 mg g À1 at 100 min, respectively). 47 Previous studies showed that phenol uptake is a combined effect of physisorption which is the dispersive interactions of the phenol with the basal planes, and chemisorption which takes place between the OH group of phenol and the functional groups on the adsorbent surface. 48 Since phenol is a relatively small molecule consisting of benzene ring with one H substituted with OH group, it can accommodate even in micropores and interact well with the g-Al 2 O 3 surface.…”

Section: Formation Mechanismmentioning

confidence: 99%

Template-free synthesis of hierarchical γ-Al₂O₃ nanostructures and their adsorption affinity toward phenol and CO₂

Cai

et al. 2015

RSC Adv.

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Adsorption of phenol from aqueous solution by a hierarchical micro-nano porous carbon material

Cited by 8 publications

References 28 publications

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics

Template-free synthesis of hierarchical γ-Al₂O₃ nanostructures and their adsorption affinity toward phenol and CO₂

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Adsorption of phenol from aqueous solution by a hierarchical micro-nano porous carbon material

Cited by 8 publications

References 28 publications

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Highly Productive Synthesis, Characterization, and Fluorescence and Heavy Metal Ion Adsorption Properties of Poly(2,5-dimercapto-1,3,4-thiadiazole) Nanosheets

Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics

Template-free synthesis of hierarchical γ-Al2O3 nanostructures and their adsorption affinity toward phenol and CO2

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Template-free synthesis of hierarchical γ-Al₂O₃ nanostructures and their adsorption affinity toward phenol and CO₂