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Article ; Online: Nitrogen-doped metal-free granular activated carbons as economical and easily separable catalysts for peroxymonosulfate and hydrogen peroxide activation to degrade bisphenol A.

Zhang, Tao / Zuo, Songlin

Environmental science and pollution research international

2024 Volume 31, Issue 17, Page(s) 25751–25768

Abstract: The fabrication of low-cost, highly efficient, environmentally friendly, and easily separable metal-free heterogeneous catalysts for environmental remediation remains a challenge. In this study, granular nitrogen-doped highly developed porous carbons ... ...

Abstract	The fabrication of low-cost, highly efficient, environmentally friendly, and easily separable metal-free heterogeneous catalysts for environmental remediation remains a challenge. In this study, granular nitrogen-doped highly developed porous carbons with a particle size of 0.25-0.30 mm were prepared by preoxidation and subsequent NH
MeSH term(s)	Hydrogen Peroxide ; Charcoal ; Nitrogen/chemistry ; Peroxides/chemistry ; Metals ; Benzhydryl Compounds ; Phenols
Chemical Substances	peroxymonosulfate (22047-43-4) ; Hydrogen Peroxide (BBX060AN9V) ; bisphenol A (MLT3645I99) ; Charcoal (16291-96-6) ; Nitrogen (N762921K75) ; Peroxides ; Metals ; Benzhydryl Compounds ; Phenols
Language	English
Publishing date	2024-03-15
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-024-32751-x
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Article ; Online: Drying enables multiple reuses of activated carbon without regeneration.

Zhang, Tao / Zuo, Songlin

Environmental science and pollution research international

2023 Volume 30, Issue 15, Page(s) 45097–45111

Abstract: Traditional regeneration of activated carbon is usually carried out by high-temperature oxidation in industrial processes, which reduces the quality and performance of the adsorbent, thereby increasing costs and damaging the environment. In this study, a ...

Abstract	Traditional regeneration of activated carbon is usually carried out by high-temperature oxidation in industrial processes, which reduces the quality and performance of the adsorbent, thereby increasing costs and damaging the environment. In this study, a simple drying process is proposed to enable reuse of spent activated carbon. The feasibility and merits of this method were evaluated in batch and continuous adsorption modes using dyes as adsorbates. The batch adsorption results showed that the activated carbon could be reused seven times after a simple drying process, because it led to full occupancy of the activated carbon pores by adsorbate molecules. The cumulative adsorption capacities of the activated carbon were as high as 1005.3 mg/g for methyl orange (MO) and 954.8 mg/g for methylene blue (MB). Continuous adsorption experiments in a fixed-bed column demonstrated that the activated carbon column could be reused more than three times after simply drying. Moreover, dye molecules adsorbed by the activated carbon were not leached by the stream of dye solution during reuse. This drying method exhibits three main merits for reuse of activated carbon, including (1) remarkably reduced consumption of fresh activated carbon to 51.5% or below, (2) significantly increased recovery of high-value adsorbate from the liquid phase, and (3) potential integration of multiple steps for industrial adsorption processes.
MeSH term(s)	Charcoal ; Oxidation-Reduction ; Coloring Agents ; Adsorption ; Methylene Blue ; Water Pollutants, Chemical ; Kinetics
Chemical Substances	Charcoal (16291-96-6) ; Coloring Agents ; Methylene Blue (T42P99266K) ; Water Pollutants, Chemical
Language	English
Publishing date	2023-01-26
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-023-25481-z
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Article ; Online: Effect of Catalytic Factors of Activated Carbon and Gas Stream Properties on H2S Catalytic Conversion

Liu, Bin / Zuo, Songlin

Water Air Soil Pollut. 2023 Feb., v. 234, no. 2 p.118-118

2023

Abstract: Catalyst-loaded activated carbons are the widely used adsorbents to remove H₂S for purification of the gas streams. Virgin carbon, single, and mixed catalyst-loaded carbon are used as adsorbents. Their performance of H₂S catalytic conversion was studied ... ...

Abstract	Catalyst-loaded activated carbons are the widely used adsorbents to remove H₂S for purification of the gas streams. Virgin carbon, single, and mixed catalyst-loaded carbon are used as adsorbents. Their performance of H₂S catalytic conversion was studied by evaluating their breakthrough curves in order to investigate the effect of catalyst contents, categories, assistant catalysts, and virgin carbon properties on the H₂S adsorption. The effects of gas stream properties on H₂S catalytic adsorption are also investigated. The results show the H₂S u amount is increased with catalyst contents, and the assistant catalysts can enhance H₂S catalytic conversion. NaOH-loaded carbon has better catalytic performance than KOH-loaded carbon with the same contents. Carbons after impregnation keep a relative high-pore volume between 2 and 20 nm, which is beneficial to give full play to the catalysis. The relative humidity and oxygen can enhance the H₂S adsorption capacity and play important roles in H₂S adsorption. CTC has little effects on the impregnated carbon for H₂S catalytic conversion. Carbon impregnated with a specific catalyst can accelerate target substance adsorption and will restrict the pore volume for organics adsorption.
Keywords	activated carbon ; adsorbents ; adsorption ; air ; catalysts ; catalytic activity ; oxygen ; relative humidity ; soil ; water
Language	English
Dates of publication	2023-02
Size	p. 118.
Publishing place	Springer International Publishing
Document type	Article ; Online
Note	Review
ZDB-ID	120499-3
ISSN	1573-2932 ; 0049-6979 ; 0043-1168
ISSN (online)	1573-2932
ISSN	0049-6979 ; 0043-1168
DOI	10.1007/s11270-023-06141-x
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Article ; Online: Metal Ion-induced Gelation of High-concentration Graphite-like Crystalline Nanosheet Aqueous Suspensions.

Yang, Mengmei / Zuo, Songlin / Hu, Xin

Small (Weinheim an der Bergstrasse, Germany)

2023 Volume 19, Issue 44, Page(s) e2303310

Abstract: The stability and transformation of nanomaterial aqueous suspensions are essential for their applications. Preparation of high-concentration carbon nanomaterials suspensions remains challenging due to their nonpolar nature. Herein, 200 mg ... ...

Abstract	The stability and transformation of nanomaterial aqueous suspensions are essential for their applications. Preparation of high-concentration carbon nanomaterials suspensions remains challenging due to their nonpolar nature. Herein, 200 mg mL
Language	English
Publishing date	2023-07-07
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2168935-0
ISSN	1613-6829 ; 1613-6810
ISSN (online)	1613-6829
ISSN	1613-6810
DOI	10.1002/smll.202303310
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Article ; Online: Significant electrolyte effect on Brønsted basicity of activated carbons

Cui, Nannan / Zuo, Songlin / Wang, Shanshan

Carbon. 2023 June, v. 210 p.118050-

2023

Abstract: Brønsted basicity of solid particles is commonly evaluated by the pH of their aqueous suspensions, which is a simple and widely used analytical method. Herein, the pH of aqueous suspensions of activated carbons were measured to evaluate their Brønsted ... ...

Abstract	Brønsted basicity of solid particles is commonly evaluated by the pH of their aqueous suspensions, which is a simple and widely used analytical method. Herein, the pH of aqueous suspensions of activated carbons were measured to evaluate their Brønsted basicity. The results show that the pH of activated carbon suspensions varies greatly with residence time in a fast ascending and slowly descending pathway. Moreover, a significant electrolyte effect is found even in an ideal solution electrolyte of <0.01 M. Suspensions of basic porous carbon in 1 M NaCl or 0.5 M Na₂SO₄ solutions produce tenfold more OH⁻ than those in ultrapure water, indicating much stronger Brønsted basicity. The great variation of pH with time and the significant electrolyte effect on pH can be attributed to the assembly of electric double-layers (EDLs) at the interface with the solid surface. Results on the isomerization of glucose into fructose demonstrate that basic activated carbons in electrolyte solutions have the potential to serve as a solid base. This work reveals a high degree of uncertainty in the pH of aqueous suspensions of carbons and provides new insight into the importance of EDLs at interfaces with solid surfaces with regard to Brønsted basicity of solids.
Keywords	activated carbon ; analytical methods ; electrolytes ; fructose ; glucose ; isomerization ; pH ; uncertainty ; Brønsted basicity ; Electrolyte ; Activated carbons ; Electric double-layer ; Solid-base catalyst
Language	English
Dates of publication	2023-06
Size	pages 118050-118050
Publishing place	Elsevier Ltd
Document type	Article ; Online
Note	Pre-press version
ISSN	0008-6223
DOI	10.1016/j.carbon.2023.118050
Database	NAL-Catalogue (AGRICOLA)

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Article: Investigation of ammonia/steam activation for the scalable production of high-surface area nitrogen-containing activated carbons

Liu, Xinxin / Zuo, Songlin / Cui, Nannan / Wang, Shanshan

Carbon. 2022 May, v. 191

2022

Abstract: Ammonia/steam activation was investigated using a gaseous mixture of reductive ammonia and oxidative steam as the activator in an effort to develop an industrially feasible method to produce nitrogen-containing activated carbons. The results show that ... ...

Abstract	Ammonia/steam activation was investigated using a gaseous mixture of reductive ammonia and oxidative steam as the activator in an effort to develop an industrially feasible method to produce nitrogen-containing activated carbons. The results show that the ammonia/steam mixture can activate charcoals in the temperature range of 850–950 °C and produce nitrogen-containing activated carbon with a surface area >2000 m²/g and nitrogen content of ∼5% at 950 °C. Moreover, it was found that employing an equation of the natural exponential function, y=ae−bx+c (a b and c are the constants), can quantitatively describe the evolution of the increased surface area, micropore volume and iodine adsorption capacity of the activated carbon material per gram of gasified char as a function of the char burn-off in the activation process. Analysis of the X-ray diffraction patterns of the activated chars further revealed that the activation proceeds via the chemical gasification of the carbon atoms in the amorphous regions and, subsequently, the graphite-like crystallite regions. The former and latter stages are responsible to the formation of a majority of the micropores and mesopores, respectively. In short, ammonia/steam activation is an efficient and cost-effective method to manufacture nitrogen-containing activated carbon materials on a large scale.
Keywords	X-ray diffraction ; activated carbon ; adsorption ; ammonia ; cost effectiveness ; crystallites ; equations ; gasification ; iodine ; micropores ; nitrogen content ; steam ; surface area ; temperature
Language	English
Dates of publication	2022-05
Size	p. 581-592.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0008-6223
DOI	10.1016/j.carbon.2022.02.014
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Article: CO₂/CH₄ Separation via Carbon-Based Membrane: The Dynamic Role of Gas–Membrane Interface

Wang, Shanshan / Cao, Zhenru / Li, Licheng / Wu, Nanhua / Huang, Liangliang / Zuo, Songlin / Lu, Xiaohua

Langmuir. 2022 Sept. 08, v. 38, no. 37

2022

Abstract: Membrane separation is considered one of the most promising CO₂/CH₄ separation technologies currently available because it is a safe, environment-friendly, and economical method. However, the inability of membrane materials to reconcile the trade-off ... ...

Abstract	Membrane separation is considered one of the most promising CO₂/CH₄ separation technologies currently available because it is a safe, environment-friendly, and economical method. However, the inability of membrane materials to reconcile the trade-off between permeability and permeation selectivity limits their further applications; moreover, the mechanism underlying this process is unclear, which is mainly determined by the performance of gas adsorption and diffusion. Therefore, this paper describes the effect of gas adsorption and diffusion on membrane separation by assessing the fundamental gas–membrane and gas–gas interactions. Combining molecular simulation methods (Monte Carlo and molecular dynamics simulation) and a thermodynamic model called “linearized nonequilibrium thermodynamic transfer model”, we investigate the permeability and permeation selectivity for CO₂/CH₄ in five carbon-based membranes and propose a general method for screening membrane materials. The interaction-dominated mechanism derived in this work provides new insights into membrane separation and facilitates the screening of high-performance membrane materials.
Keywords	adsorption ; molecular dynamics ; permeability ; thermodynamic models ; thermodynamics
Language	English
Dates of publication	2022-0908
Size	p. 11274-11283.
Publishing place	American Chemical Society
Document type	Article
ZDB-ID	2005937-1
ISSN	1520-5827 ; 0743-7463
ISSN (online)	1520-5827
ISSN	0743-7463
DOI	10.1021/acs.langmuir.2c01333
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Article: Preparation of lignin-based carbon foam monoliths with high strength and developed micrometer-sized cell/nano-sized porous structures using a self-bubbling method

Xu, Fei / Gui, Youcai / Zuo, Songlin / Li, Jiatong / Wang, Shanshan

Journal of analytical and applied pyrolysis. 2022 May, v. 163

2022

Abstract: Lignin is an attractive renewable feedstock used for the production of carbon materials because of its abundance and high carbon content. This work aims to explore a scalable technology to produce carbon foams from lignin. A lignin self-bubbling method ... ...

Abstract	Lignin is an attractive renewable feedstock used for the production of carbon materials because of its abundance and high carbon content. This work aims to explore a scalable technology to produce carbon foams from lignin. A lignin self-bubbling method has been developed in this study using zinc chloride as the catalyst for the thermal decomposition of lignin, resole as a cross-linking agent and a surfactant as the foaming assistant agent. The effects of dosage of zinc chloride and resole, type and dosage of surfactant, foaming temperature, heat treatment on the structure and properties of the materials have been investigated. The results show that the structure and properties of the resultant lignin-based carbon foams without any fractures is highly tunable depending on the amount of zinc chloride, resole and surfactants used, the foaming temperature in the self-bubbling process and post-heat treatment step. It is found that the non-ionic surfactant Tween-80 can significantly improve the mechanical strength and porosity of monolithic lignin-based carbon foams. The lignin-based carbon foams prepared using a self-bubbling method under ambient pressure not only exhibit a compressive strength of ˃4 MPa and an electric conductivity of 0.79 S cm⁻¹, but also bear a developed structure of micrometer-sized cells with a low density of 0.3 g cm⁻³ and nanometer-sized pores with surface area of ˃175 m² g⁻¹. Furthermore, the lignin-based carbon foams have high thermal and structural stability to resist burning for various applications and exhibit excellent performance in oil/water separation, which retain 91% of the adsorption capacity toward oils even after being recycled 20 times.
Keywords	adsorption ; ambient pressure ; carbon ; catalysts ; compression strength ; cross-linking reagents ; electrical conductivity ; feedstocks ; foams ; heat treatment ; lignin ; nonionic surfactants ; oils ; polysorbates ; porosity ; pyrolysis ; strength (mechanics) ; surface area ; temperature ; zinc chloride
Language	English
Dates of publication	2022-05
Publishing place	Elsevier B.V.
Document type	Article
ISSN	0165-2370
DOI	10.1016/j.jaap.2022.105490
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Article: Graphitic crystallite nanomaterials enable the simple and ultrafast synthesis of resorcinol-formaldehyde carbon aerogel monoliths

Gao, Han / Zuo, Songlin / Wang, Shanshan / Xu, Fei / Yang, Mengmei / Hu, Xin

Carbon. 2022 July, v. 194

2022

Abstract: Herein, we describe a simple and ultrafast method to synthesize carbon aerogel monoliths from resorcinol (R) and formaldehyde (F) using graphitic crystallite nanomaterials (GCNs). GCNs play the crucial roles in the simple and ultrafast synthesis of ... ...

Abstract	Herein, we describe a simple and ultrafast method to synthesize carbon aerogel monoliths from resorcinol (R) and formaldehyde (F) using graphitic crystallite nanomaterials (GCNs). GCNs play the crucial roles in the simple and ultrafast synthesis of carbon aerogel monoliths. In the gelation step, GCNs significantly catalyze the addition reaction of RF resulting into the occurrence of RF gelation at room temperature within 30 min. In the drying step, GCNs not only provide the resulting aerogels with strong support to resist the high surface tension due to heat drying but also construct developed nanochannels with dimensions of hundreds of nanometers with the RF gel particles, thereby permitting water to quickly and isotropically vaporize during heat drying hydrogel. Consequently, carbon aerogel monoliths without any fractures can be synthesized within one day by direct heat drying under ambient pressure instead of the conventional 1–2 weeks. These carbon aerogels have highly developed mesoporosity, high compressive strength of 24–82 MPa and electrical conductivity of 9–25 S/cm, depending on the dosages of GCNs, catalyst and water, as well as their subsequent treatment.
Keywords	aerogels ; ambient pressure ; ambient temperature ; carbon ; catalysts ; compression strength ; crystallites ; electrical conductivity ; formaldehyde ; gelation ; heat ; hydrogels ; resorcinol ; surface tension
Language	English
Dates of publication	2022-07
Size	p. 220-229.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0008-6223
DOI	10.1016/j.carbon.2022.03.070
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Article ; Online: CO

Wang, Shanshan / Cao, Zhenru / Li, Licheng / Wu, Nanhua / Huang, Liangliang / Zuo, Songlin / Lu, Xiaohua

Langmuir : the ACS journal of surfaces and colloids

2022 Volume 38, Issue 37, Page(s) 11274–11283

Abstract: Membrane separation is considered one of the most promising ... ...

Abstract	Membrane separation is considered one of the most promising CO
Language	English
Publishing date	2022-09-07
Publishing country	United States
Document type	Journal Article
ZDB-ID	2005937-1
ISSN	1520-5827 ; 0743-7463
ISSN (online)	1520-5827
ISSN	0743-7463
DOI	10.1021/acs.langmuir.2c01333
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