JOURNAL OF MOLECULAR LIQUIDS
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2018
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IF 4.513
Xiufang He,Zhansheng Wu,Zhonghai Sun,Xinhui Wei,Zhilin Wu,Xinyu Ge,Giancarlo Cravotto
A novel hybrid material was prepared by grafting β-cyclodextrin (β-CD) onto the surface of oxidized AC for the rapid adsorption of naphthalene . AC and CDACs were characterized using the N 2 adsorption–desorption method, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and solid state CP MAS 13 C NMR. All the results demonstrate that β-CD grafted successfully onto AC. Batch experimental adsorption datas had a higher correlation to Freundlich isotherm model and the pseudo-second-order model. The adsorption equilibrium capacity of 178.73 mg·g −1 was reached in just 10 s at an AC/β-CD grafting ratio value of 1:1. It had a faster adsorption rate than many reported adsorbents. Additionally, the positive free energy change (∆G°), and the positive enthalpy change (∆H°) suggest that it is a viable, spontaneous and endothermic process, which will provided a new path to a highly-efficient and fast-adsorption-rate adsorbent for naphthalene or its analogues discharged into the environment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2015
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IF 2.711
Hai-Min Shen,Gong-Yuan Zhu,Wu-Bin Yu,Hong-Ke Wu,Hong-Bing Ji,Hong-Xin Shi,Yuan-Bin She,Yi-Fan Zheng
Renewable β -cyclodextrin ( β -CD) was grafted onto the surface of silica gel using (3-chloropropyl)trimethoxysilane and ethylenediamine as linking groups to construct adsorbent in water treatment (CD@Si), and the obtained CD@Si was characterized through FT-IR, XPS, contact angle measurement, TGA, solid-state 13 C NMR, SEM, and XRD analyses. The effects of initial pH, contact time on the adsorption performance of CD@Si to p -nitrophenol, and the adsorption kinetics, adsorption isotherms, adsorption thermodynamics, reusability and adsorption mechanism were investigated systematically, which indicate the adsorption of p -nitrophenol onto CD@Si is a very fast process and the adsorption equilibrium can be reached in 5 s with acceptable equilibrium adsorption capacity of 41.5 mg/g in pH ≥8.5, much faster than many reported adsorbents based on β -CD. The adsorption of p -nitrophenol onto CD@Si follows the pseudo-second-order model, obeys the Freundlich model, and is a feasible, spontaneous and exothermic process which is more favorable in lower temperature. And the formation of inclusion complex and hydrogen bond interaction are two origins of p -nitrophenol being adsorbed onto CD@Si. Additionally, CD@Si can be recycled and reused at least five runs with acceptable adsorption capacity, is a very promising adsorbent in the fast adsorption of p -nitrophenol or its analogues from aqueous phase.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Biomass Conversion and Biorefinery
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2021
·Vol. 13
·期 13
·11499-11511
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IF 4.987
Wang Wei,Wang Zhijuan,Li Kai,Liu Yuxin,Xie Delong,Shan Shaoyun,He Liang,Mei Yi
Numerous studies have shown that patients with COVID-19 have a high incidence of renal dysfunction. However, the dialysis supplies, including dialysates, are also severely inadequate in hospitals at the pandemic centers. Therefore, there is an urgent need to develop materials that can efficiently and rapidly remove toxins and thus regenerate dialysate to make this vital resource remains readily available. In this work, by simple carbonization and activation treatment, the porous activated carbon from waste rubber seed shell (RAC) was prepared. The adsorption results showed that the maximum adsorption capacities of the obtained RAC for creatinine and uric acid were 430 mg/g and 504 mg/g, respectively. Significantly, the adsorption process can be close to the equilibrium state within 0.5 h, which proved the ultra-fast adsorption response capacity of RAC. Further, the thermodynamics analysis results showed that both the creatinine and uric acid adsorption processes were monolayer, exothermic, and spontaneous. The adsorption kinetics results indicated that the adsorption process of the two uremic toxins followed the pseudo-second-order rate model and was dominated by chemisorption. The instrument analysis results reflected the efficient adsorption of the RAC for the above uremic toxins which might be due to the dipole–dipole interaction between the dipolar oxygen-containing groups of the surface of RAC and the dipoles of the toxins. Moreover, the formed hydrogen bonds between the oxygen groups and the toxins also played an important role. In all, the as-prepared RAC has the potential to efficiently remove major toxins from the dialysate and can be used in in vitro dialysis of numerous patients during the current COVID-19 pandemic.
研究领域:
医学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
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2021
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IF 4.32
Liangzhong Li,Chang Liu,Ruixue Ma,Yunjiang Yu,Zhaofeng Chang,Xiaohui Zhang,Chengyu Yang,Da Chen,Yang Yu,Wei Li,Yongdi Liu
Thallium contamination has raised global concern due to its high toxicity and treatment difficulties. In this study, the magnetic adsorbent rGO-Fe 3 O 4 @TiO 2 was synthesized for the effective removal of thallium(I) from water. The stable magnetism of the adsorbent before and after the adsorption ensured the facile magnetic separation from treated streams. The abundant hydroxyl groups on the surface of nano-sized TiO 2 particles served as adsorptive sites for the Tl(I) ions. The adsorbent performed a fast adsorption rate of Tl(I), achieving approximately 50% of ultimate adsorbed amount within the initial 10 min at near neutral condition (pH 7.0). Tl(I) removal was significantly enhanced by increasing solution pH value due to the electrostatic attraction between Tl(I) ions and the adsorbent surface. Isotherm study showed that the adsorption process was favorable, with the maximum adsorption capacity of 141.8 mg g −1 . The presence of co-existing cations might interfere and compete with the adsorption sites of Tl(I) ions. The prepared magnetically responsive adsorbent with good regeneration ability could be used as a competitive alternative to address the sudden thallium pollution incidents considering its rapid rate and high efficiency for Tl(I) adsorption and removal from aqueous systems.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Huayu Liu,Yahui Si,Lijia Liu,Yudan Wang,Fanshuai Gao,Yawen Liu
A hypercrosslinked porous polymer (HCP) containing disulfide bonds (HCP-DS) was synthesized via a Friedel-Crafts alkylation reaction of benzyl disulfide. Subsequently, in-situ cleavage of the disulfide bonds by tris(2-carboxyethyl)phosphine hydrochloride in HCP-DS enhanced the specific surface area of the HCP, and resulted in numerous paired thiol groups in the HCP (HCP-PSH). As a reference, benzyl mercaptan was hypercrosslinked to produce HCP-ISH that thiol groups irregularly distributed in the HCP. HCP-PSH exhibited an impressive adsorption capacity and fast adsorption speed. The capacity reached 2221.2 mg·g −1 when [Hg 2+ ] = 600 mg·L −1 . The adsorption could rapidly reach 96 % of its equilibrium capacity within just 10 min. HCP-PSH showed great adsorption capacity in a wide pH range, even pH = 0.5, it also showed high adsorption capacity. Additionally, HCP-PSH demonstrated excellent selectivity for mercury ions, even in the presence of competing metal ions, underscoring its potential for practical applications. The material also showed outstanding reusability, maintaining its performance over five adsorption/desorption cycles. HCP-PSH demonstrated superior adsorption performance compared to HCP-ISH without the paired thiol groups in the same adsorption condition, indicating that paired thiols are more effective for mercury ion adsorption.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
CELLULOSE
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2021
·Vol. 28
·期 13
·8419-8428
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IF 5.044
Qiao Liangzhi,Wang Shanshan,Du Kaifeng
It remains a formidable challenge to construct high-performance haemoperfusion adsorbents with fast adsorption kinetic and high adsorption capacity for efficiently removing bilirubin from human blood. In this work, we report a facile yet efficient strategy to manufacture lysine-modified macroporous cellulose/carbon nanotube microspheres (LMCMs) by surfactant micelles swelling strategy followed by modification with lysine. The macroporous structure not only provides wide channels for fast mass transfer, but also shortens the diffusion path into meso/micropores, increasing the accessibility of mesopores and micropores. Experimental results reveal that LMCMs can remove bilirubin with fast adsorption kinetic (> 90% of its equilibrium uptake within 2 h) and high adsorption capacity of 338.14 mg/g. More importantly, the adsorbent can remove about 79% of bilirubin in rabbit serum, and the bilirubin concentration in rabbit serum decreases from 213.36 to 45.78 mg/L within 2 h, indicating a very appealing application prospect.
研究领域:
生物医学工程
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Chengxin Zhang,Lulu Yang,Lin Zhao,Yu Liu,Dongfeng Hong,Xiaoyuan Shi,Shaolei Wang,Guangshan Zhu
Various porous adsorbent materials have shown excellent adsorption performance for the removal of organic micro-pollutants in water. However, the practical application was hindered by the high cost or slow adsorption kinetics for most of porous adsorbents. Therefore, it is of great significance to develop economic adsorbent materials with characteristic like low-cost, easier preparation method, excellent adsorption kinetics etc . Herein, based on the Friedel-Crafts alkylation reaction, we reported three novel hydrophilic organic porous adsorbent frameworks (PAF-210, PAF-211 and PAF-212) with high Brunauer-Emmet-Teller (BET) surface area (956 ∼ 1384 m 2 /g) for phenolic micro-pollutants (bisphenol A (BPA), 2,4-dichlorophenol (2,4-DCP) and 2-naphthol (2-NO)) adsorption in water, which were prepared by using cheap trimethyl orthoformate (TMOF) as crosslinker and one-step simple ball milling synthetic method under room temperature within 15 min. Rich oxygen content promotes the resulting polymers to possess excellent hydrophilicity and wettability through water vapor adsorption and water contact angle analysis. The excellent hydrophilicity and proper porous properties made the resulting frameworks suitable as porous organic adsorbents to rapidly remove organic phenolic micro-pollutants from water. Among the resulting polymers, the PAF-210 exhibited ultra-fast adsorption (>94.0 % within 5 s), ultra-rapid adsorption kinetics with pseudo-second-order rate constants (K 2 , up to 7.72g/mg min −1 for 2,4-DCP), high pollutant adsorption capacity (up to 867.03 mg g −1 for BPA) and excellent recyclability (10 cycles with slight loss in adsorption capacity) through systematically characterization. The adsorption performances of PAF-210 are much better than these of the commercial activated carbons and β-cyclodextrin-based porous adsorbents (K 2 = 1.50g/mg min −1 for P-CDP) etc . The favorable hydrophilicity, surface wettability, and adsorption performance of PAF-210 were significantly better than the comparative material constructed by using benzene and formaldehyde dimethyl acetal (FDA) through conventional thermal synthetic method, which is a very classic synthesis strategy in the field of porous materials. More importantly, the PAF-210 exhibited relatively superior adsorption performance on BPA, and it still presented excellent adsorption performance (removal efficiency ≥ 96.8 % within 5 s after 10 cycles) even at the safe range of BPA quantified in drinking water (BPA≤10 μg L −1 , Standards for drinking water quality, GB5749-2022, China). XPS analysis and theoretical simulations proved that the excellent adsorption performance and ultra-fast adsorption rate stem from interactions including π-π interactions, hydrogen bonding and van der Waals interactions between PAF-210 and micro-pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Yan Wang,Bin Peng,Yuanyuan Gong,Yingrong Xie,Tingting Feng,Xiaolin Liu,Bowei Chen,Yong Zhang
High-efficient and fast extraction of uranium is of great significance not only for environmental remediation, but also meeting the shortage of uranium storage. A novel type of porous indole-based polymer (PHTPIAAs) decorating with amino acid and carboxyl groups was fabricated by a simple Friedel-Crafts acylation reaction. The as-prepared PHTPIAAs possessed encouraging and effective elimination properties for uranium in aqueous solution by taking advantages of the cooperativity of cation-π interaction and complexation. The experimental results showed that the PHTPIAA-2 exhibited ultrafast uptake rate (50.0 min) to uranium with a high removal efficiency of 97.2%, and the maximal uptake capacity was up to 457 mg g −1 calculated by Langmuir model at 298 K. The regeneration of PHTPIAA-2 was fulfilled expediently with hydrochloric acid (HCl, 0.1 mol L −1 ) as eluant, and the removal efficiency of the reborn PHTPIAA-2 maintained 80.2% after 5 cycles. These findings demonstrated that this new indole-based polymer could be considered as a valuable material in the extraction and recovery of uranium from various uranium-containing aqueous solutions.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Yaqing Zhao,Yaming Sun,Chenchen Song,Hailiang Zhao,Shiqi Chai,Xuemeng Xu,Lijun He
Organophosphorus pesticides (OPPs) severely pollute various environmental water due to their excessive use, and it is extremely urgent to develop novel adsorbents with high adsorption capacities, rapid removal rate and easily recovery for the removal of OPPs. In this study, defect-rich Co/N-doped hierarchically porous carbons (Co/N-DHPCs) were constructed by pyrolyzing acid-etched ZIF-67 precursor. The developed Co/N-DHPCs possessed rich defects, well-developed hierarchical porous structure, high specific surface area and excellent magnetic property, and exhibited large adsorption capacities of 103.81∼126.10 mg g -1 and high removal efficiencies of 94.06 %∼100.00 % for fenitrothion, fenthion and phosalone within 15 min. The exceptional adsorption performance of Co/N-DHPCs could be attributed to the pore-filling effect, hydrophobic and π-π interactions, as well as the new active sites formed by rich defects and N heteroatoms doping. In addition, the magnetic property of Co/N-DHPCs enabled rapid and straightforward separation from aqueous solution. The Co/N-DHPCs also showed good reusability with removal efficiencies of 85.24 % after five consecutive recycles. Furthermore, the developed Co/N-DHPCs demonstrated remarkable removal efficiencies of OPPs in seven environmental water samples, particularly in high-salt seawater. This work provides a kind of reliable adsorbents for removing pollutants in environmental water.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2019
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IF 0
Xueping Liao,Qiang Zhang
Rapid removal of boric acid is important in many applications such as seawater desalination, boron extracting and water treatment. Although regarded as the most widely used boron-specific adsorbents, ion-exchange resins are often criticized because of the limited adsorption capacity and slow adsorption rate. Herein we report a copper-free synthesis route of mesoporous nanosponges with cis-diols functionalized on the surface, which are used for rapid removal of boric acid and organic micropollutants from water. Different cross-linking reagents are used to regulate the surface morphology and porous structure of cyclodextrin (CD)-scaffolded nanosponges. Staudinger reaction is then conducted to generate amine groups on the primary face of CD for subsequent reaction with d-(+)-gluconic acid δ-lactone, which successfully immobilize high-density cis-diols on the surface for efficient chelating with boric acid. Functional polymer nanosponges have shown similar boron adsorption capacity as the commercial resins, while the time to reach equilibrium adsorption is reduced dramatically from up to 2 days to tens of minutes (up to 60 times faster). Uptake of bisphenol A by these porous polymers is fast and the equilibrium adsorption could be attained in less than 2 min. The presence of immobilized polyols indicates a synergistic effect due to the secondary bonding, which simultaneously decrease the adsorption time and enhance the adsorption capacity. These findings demonstrate the potential application of polyol-functionalized mesoporous nanosponges in rapid flow-through water treatment.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
Journal of Cleaner Production
·
2023
·
IF 11.1
Wei Li,Yue-Lei Hao,Wei-Liang Jin,Jing-Qi Liu,An-Na Tang,Li-Na Zhu,Hong-Xin Jiang,De-Ming Kong
The assessment and treatment of heavy metal pollution are eternal subjects of environmental protection. Facile on-site assessment of heavy metal pollution and efficient, rapid removal of pollutes are still challenging. Covalent organic frameworks (COFs) hold great promise as absorbents for heavy metal pollution treatment. To overcome the application limits of COF powders, a COF-based monolithic composite is prepared by direct in-situ growth of an N/O-rich COF on the surface of a melamine foam (MF). The resultant MF@COF inherits the macro-porous channels of MF, the good crystallinity of COF, and integrates the attractive features of monolithic materials such as ease of operation, facile and highly efficient recovery, and good reusability . The abundant N/O groups endow MF@COF with powerful capture capability towards various heavy metal ions . Its maximum adsorption capacity for Cd 2+ is 278.45 mg/g, and the adsorption equilibrium can be reached within 1–3 s. The adsorption kinetic of Cd 2+ by MF@COF follows the pseudo-second-order kinetic model , and the adsorption isotherm conforms to Freundlich model. Rapid adsorption, together with the easy-to-operate feature of monolithic material, make the ultrafast water purification possible. Meanwhile, MF@COF works well for the highly efficient enrichment of Cd 2+ to realize the naked-eye detection of Cd 2+ pollution at low levels, thus may be developed as an important tool for both on-site assessment and rapid treatment of heavy metal pollution.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Junhao Chen,Mengyao Zhu,Guang He,Huiyu Yang,Ziwei Deng,Jiehao Du,Xin Liu,Jingjing Huang,Shaojin Gu,Bin Shang
The daily water productivity of sorption-based atmospheric water harvesting (SAWH) materials is significantly limited by their low moisture sorption capacity and sluggish ab/desorption kinetics. Here, a thin, porous, mechanically stable and high LiCl-loading content super-hygroscopic SA-MXene@LiCl membrane (SM@LiCl) was fabricated via vacuum-assisted filtration and freeze-drying methods. The thin and porous characteristics of the cross-linked SA-MXene network significantly reduce moisture transport resistance, while the wrapped hygroscopic LiCl effectively enhances its moisture capture capacity. When applied to SAWH, this nanocomposite membrane demonstrates an impressive water uptake performance of 1.69 g g −1 within 1 h at 45 % RH and releases over 65 % of absorbed water after only 0.5 h of sunlight irradiation (1 kW/m 2 ). With its high moisture sorption capacity and rapid ab/desorption kinetics, it can operate for up to 16 cycles per day in indoor environment, resulting in a record daily water yield of 19.46 L kg −1 at 45 % RH. The present study presents a straightforward approach for the development of high-quality sorbents with improved ab/desorption kinetics for SAWH.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）