CHEMOSPHERE
·
2023
·
IF 8.8
Xueqing Wang,Xing Liu,Fan Li,Chiara Valsecchi,Zhangmei Hu,Yongzheng Zhang,Dongmei Wang,Chaoming Wang,Ji Sun,Meikun Fan
This work presents a novel strategy for the synthesis of a recyclable aerogel and its multifunctional application as effective adsorption material for organic pollutants and as a high-quality SERS substrate for on-site detection measurement. Silver nanoparticles (Ag NPs) were uniformly dispersed and adsorbed on the surface of an Fe 3 C-loaded carbon aerogel, resulting in the formation of a three-dimensional Ag–Fe 3 C–MCA (magnetic carbon aerogel) composite. The substrate preparation led to Ag–Fe 3 C–MCA with a mesoporous structure for high adsorption capacity, together with magnetic properties for easy separation capability. The Ag–Fe 3 C–MCA composite demonstrated an efficient removal ability for malachite green (MG), with an adsorption capacity of 296.7 mg g −1 . Moreover, Ag–Fe 3 C–MCA composite provided ultrasensitive surface-enhanced Raman scattering detection for MG molecules, obtaining a limit of detection (LOD) of 3 × 10 −10 M. Aquaculture water samples with spiked MG concentrations were used to simulate practical scenarios. The Ag–Fe 3 C–MCA presented has a significant potential for the removal of hazardous residues in wastewater, together with an efficient and sensitive method of quantification, all on the same substrate.
研究领域:
环境科学
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材料科学
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分析化学
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Zhiyong Li,Zhenzhen Wang,Hui Wang,Yunlei Shi,Yang Zhao,Huiyong Wang
Furan compounds, such as furfural (Fur) and 5-hydroxymethylfurfural (5-HMF), are significant platform molecules from biomass. They have high boiling points and coexist with raw carbohydrates in aqueous solutions. This makes their efficient adsorption and selective separation a critical challenge in sustainable biorefinery processes. This study focuses on synthesizing amino-functionalized MOFs by grafting amino silanes onto UiO-67 to achieve the efficient adsorption and selective separation of 5-HMF or Fur from aqueous solutions. The optimized adsorbent UiO-67-2AS(10) exhibits a remarkable adsorption capacity for 5-HMF (1530 mg/g) and Fur at room temperature (1267 mg/g). Under optimal conditions, the extraction efficiencies are 12% for 5-HMF and 19% for Fur. Additionally, UiO-67-2AS(10) does not exhibit a clear affinity toward sugars (sucrose, xylose, and fructose) in water, enabling selective separation of furan compounds from reducing sugars. The adsorption process is accurately described by both the Langmuir model and the pseudo-second-order kinetic model. UiO-67-2AS(10) exhibits remarkable adsorption performance due to the π–π interactions and hydrogen bonding interactions with the furan compound.
研究领域:
化学工程
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材料科学
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可持续能源
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DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2024
·
IF 4.8
Wei Chen,Pengfei Wang,Weike Jia,Huidan Zeng
Improving the zeolite adsorption separation efficiency of individual xylene isomer with high purity from their mixture is still a pressing challenge in the fine chemical industry. Herein, plate-like silicalite-1 (p-S-1) zeolite crystals with short b-axis thickness have been successfully synthesized by combination of tributylphosphine oxide (TBPO) modifier and F − -assisted crystallization method to first investigate the separation property of xylene isomers. The morphology and structure of the p-S-1 zeolite crystals were characterized by XRD, FTIR, BET, SEM and TEM. The results showed that the p-S-1 zeolite crystals with thickness of about 50 nm along the b-axis and high crystallinity, as well as extremely rich micropores, were obtained by crystallizing the gels with TBPO/SiO 2 ≥ 0.04. By static adsorption experiment and fixed bed experiment, xylene isomers selective adsorption separation property of the p-S-1 zeolite crystals prepared at TBPO/SiO 2 = 0.04 was investigated. The static adsorption experiment demonstrated that the p-S-1 zeolite crystals exhibited higher adsorption capacity of p-xylene (p-X) and more excellent xylene isomers separation performance than that of the bulk coffin-shaped silicalite-1 (c-S-1) zeolite crystals because of the shorter mass transfer channel and larger diffusivity differences between p-X and o-X/m-X/EB. The dynamic adsorption experiment in simulated five-component solutions diluted by isooctane (IO) indicated that the p-S-1 zeolite crystals had excellent xylene isomers selective adsorption separation performance. The optimum dynamic xylene isomers selective adsorption separation factors for p-X/o-X, p-X/m-X and p-X/EB were 25.41, 36.45 and 11.57 at 150 °C, respectively. The regeneration experiment also indicated that the p-S-1 zeolite crystals had more stable structure and longer lifetime. This work suggested that the p-S-1 zeolite crystals had great potential as new adsorbent for selective adsorption separation of xylene isomers.
研究领域:
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
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Bo Chen,Yangrui Cao,Huinan Zhao,Fengxia Long,Xiang Feng,Juan Li,Xuejun Pan
Herein, a novel Fe 3+ -stabilized magnetic polydopamine composite (Fe 3 O 4 /PDA-Fe 3+ ) was facilely constructed, systematically characterized, and subsequently applied for the first time as a versatile adsorbent for treatment of Methylene blue (MB) in complex wastewater. Results showed that as-prepared material had prominent adsorption ability toward MB in its single dye solution over a wide pH range (3–10) with q max value of 608.8 mg/g at 318 K. More interestingly, MB could be selectively captured by resulting adsorbent from mixed dye solutions (MB-cationic dye and MB-anionic dye) and complex aqueous solution with high ionic strength up to 0.5 mol/L NaCl. It was eventually revealed that the enhanced and selective adsorption of MB by as-resultant adsorbent was due to the synergistic effects between multiple uptake mechanisms. What's more, its adsorption efficiency toward MB in simulated wastewater still maintained higher than 80 % of its original uptake performance after several runs of adsorption-desorption. Additionally, it exhibited more superior uptake performance toward MB than commercial powder activated carbon (PAC) in column adsorption system. Thus, the outstanding sorption ability, unique capture selectivity, as well as excellent stability and recyclability for model wastewater endow it a promising candidate adsorbent for selective adsorption and separation of MB from complex wastewater.
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
PubMed
高影响因子
AICHE JOURNAL
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2019
·Vol. 65
·期 8
·e16616
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IF 3.463
Daofei Lv,Jiayu Chen,Yongwei Chen,Zewei Liu,Yuzhi Xu,Chongxiong Duan,Houxiao Wu,Ying Wu,Jing Xiao,Hongxia Xi,Zhong Li,Qibin Xia
Metal–organic frameworks (MOFs) combined with selective adsorption capacity of ethane over ethylene and good moisture stability are highly urged by adsorption industrial community. Here, the moisture stability mechanism of Zr-bptc, UiO-66, PCN-245, and Ni(bdc)(ted) 0.5 were investigated by moisture stability experiments, and computational simulation of metal node-linker breaking energy caused by water. Results show that the moisture stability follows the order of Zr-bptc > UiO-66 > PCN-245 > Ni(bdc)(ted) 0.5 . The different moisture stability for these MOFs is likely attributed to the bond strength between metal center and ligands, the coordination number of metal center, the hydrophobicity of framework, as well as the degree of interpenetrated framework. Additionally, comparing with ethylene-selective MOFs, ethane-selective MOFs have fewer coordinatively unsaturated metal sites. Breakthrough experiments indicated that Zr-bptc is the promising material for ethane/ethylene separation.
研究领域:
材料化学
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配位化学
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气体分离
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多孔材料
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工业吸附
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DOI
高影响因子
TALANTA
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2025
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IF 6.1
Lifang Gao,Yuheng Wang,Jixuan Zhang,Haoran Wang,Yue Zhang
Herein, a zwitterionic hybridization approach is engineered to develop a functional hybrid framework (MPC) for the efficient separation of immunoglobulin G (IgG). The in-situ polymerization of octa-carboxyl polyhedral oligomeric silsesquioxane (OCPOSS)-chitosan polymer on Ti 3 C 2 T x MXene effectually enables the formation of local zwitterionic hydrophilic microregions in MPC, and meanwhile actuates its affinity ability and recognition selectivity toward IgG. When 1 mg of MPC serves as adsorbent to treat IgG solution (100 mg L −1 , 1 mL), an adsorption efficiency of approximately 99.0 % is facilely reached. Superior adsorption performance of MPC is well demonstrated by satisfactory enrichment factor (119.3) and high binding capacity (866.4 mg g −1 ). MPC is further employed for the separation of IgG from complex biological samples, achieving a protein purity of 97.9 %. Experimental characterization and molecular docking simulation successfully affirm the prominent role of multiple components in MPC in the collaborative contribution to the selective affinity separation of IgG. This study not only affords a highly efficient pretreatment platform for specific biomarker detection and antibody purification, but also illuminates the huge prospects of zwitterionic MXene-based frameworks in the field of proteomics research.
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DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2025
·Vol. 12
·期 12
·4007-4018
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IF 6.4
Hong-Juan Lv,Yunhui Zhai,Ying-Ying Xue,Jiao Lei,Wenyu Yuan,Quan-Guo Zhai
Adsorption-based separation techniques are pivotal in the purification of C2H2, leveraging their eco-friendly and energy-efficient attributes. However, the reusability of adsorbents is highly restricted by the trade-off between adsorption capacity and adsorption enthalpy, which is required to be urgently addressed. Herein, we demonstrated that the implantation of distortable ligands with functional groups is efficient in solving the above issue. The functional groups provided binding sites for C2H2 adsorption, while the distortable ligands optimized the pore structures to reduce adsorption enthalpy, thus balancing the trade-off between adsorption capacity and enthalpy. A series of ultra-microporous MOFs was successfully constructed by employing different pyridine ligands. The adsorption capacity of SNNU-504 after optimization was effectively enhanced, while the adsorption enthalpy hardly increased due to the adjustable ligand torsion angle. Breakthrough experiments and GCMC simulations further verified the potential C2H2/CO2 separation applications.
研究领域:
材料科学
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化学工程
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吸附技术
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分离科学
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纳米多孔材料
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产品关联
DOI
高影响因子
Advanced Sustainable Systems
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2024
·
IF 6.5
Jiawei Zhou,Ming Liu,Shiyang Bai,Jihong Sun,Jia Wei,Ju Wang
The MOF-5@clinoptilolite (MOF@CP) composites are successfully synthesized using polyvinylpyrrolidone (PVP) for adsorption separation of CO 2 /CH 4 , CO 2 /N 2 , and CH 4 /N 2 . The effects of the PVP amounts on the dispersity of MOF-5 on CP random lamellas of the MOF@CPs are evaluated via various characterizations. Meanwhile, their single-component gas adsorption isotherms, breakthrough experiments, and cycling test are measured. The results elucidate that the used PVP amount has a significant influence on the particle size and the uniformity of MOF-5 dispersed on CP random lamellas. The MOF-5-loaded amount in MOF@CP is estimated to be up to 42.52 wt.%. Especially, the surface fractal evolutions indicated the surfaces of MOF@CP became from rough to smooth with the increase of PVP. The CO 2 /CH 4 , CO 2 /N 2 , and CH 4 /N 2 selectivity factors of MOF@CP are higher than that of CP, displaying a better separation performance. Their cycling test revealed that MOF@CPs could be used repetitively, highlighting efficiency for CO 2 and CH 4 separation. Meanwhile, the MOF-5@CP stability under moisture is preliminarily investigated, showing higher moisture resistance stability than MOF-5. Additionally, the grand canonical Monte Carlo simulations demonstrated the adsorption separation mechanism of the prepared MOF@CPs.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Anqi Zhou,Jing Du,Yingxin Shi,Yue Wang,Tianhao Zhang,Qiuxia Fu,Haoru Shan,Tao Ji,Sijun Xu,Qixia Liu,Jianlong Ge
Volatile organic compounds (VOCs) in the air pose great health risks to humans and the environment. Adsorptive separation technology has proven effective in mitigating VOC pollution, with the adsorbent being the critical component. Therefore, the development of highly efficient adsorbent materials is crucial. Carbon nanofibers, known for their physical–chemical stability and rapid adsorption kinetics, are promising candidates for removing VOCs from the air. However, the relatively simple porous structures and inert surface chemical properties of traditional carbon nanofibers present challenges in further enhancing their application performance further. Herein, a hierarchical porous carbon nanofibrous membrane was prepared using electrospinning technology and a one-step carbonization & activation method. Phenolic resin and polyacrylonitrile were used as co-precursors, with silica nanoparticles serving as the dopant. The resulting membrane exhibited a specific surface area of up to 1560.83 m 2 /g and surfaces rich in functional O-/N- groups. With a synergistic effect of developed micro- and meso -pores and active chemical surfaces, the carbon nanofibrous membrane demonstrated excellent adsorption separation performance for various VOCs, with comparable adsorption capacities and fast kinetics. Moreover, the membrane displayed remarkable reusability and dynamic adsorption performance for different VOCs, indicating its potential for practical applications.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2025
·
IF 4.7
Zongwu Wei,Sefeng Qin,Jiayi Wang,Chuncan Yang,Huafa Liang,Kungang Chai,Zhiqiang Lin,Fang Shen
With the intensification of the heavy metal pollution burden, it is urgent to develop an adsorbent that can efficiently and selectively separate and capture heavy metal ions. In this work, a Zn-based triazole MOF was successfully prepared for efficient selective adsorption of Pb(II) (MOF-ZTN). The maximum uptake capacity of MOF-ZTN for Pb(II) can peak at 790 mg g −1 , with selectivity coefficients ( K s ) for Mg(II), Cd(II), Mn(II), and Co(II) being 2927, 1846, 4453, and 828, respectively, indicating that the material has a significant selective adsorption advantage for Pb(II). In the low concentration Pb(II) wastewater system, MOF-ZTN can also effectively remove more than 90 % of Pb(II) ions so that the treated wastewater quality can meet the requirements of relevant emission standards. Five consecutive adsorption-desorption cycles confirm the recyclability of MOF-ZTN. The theoretical calculation elucidates that the synergistic capture of Pb(II) by the nitrogen atoms of three triazoles in MOF-ZTN is the key to its adsorption mechanism. In short, this study shows that MOF-ZTN exhibits significant potential in the efficient capture and separation of Pb(II) and provides a new theoretical basis for the application of MOFs within the domain of environmental protection.
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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无机化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zi-Han Song,Kuo Zhang,Yue-Chao Yuan,Hong-Miao Wang,Xin He,Jing-Jing Pang,Jian Xu
Given the increasing demand for energy-efficient natural gas purification, the development of porous adsorbents capable of achieving high-purity methane (CH 4 ) from natural gas with a considerable productivity is highly desirable yet challenging. To this end, we herein report a new fluorine-functionalized ultramicroporous metal-organic framework constructed based on heterometallic Cu + -In 3+ ions and 3-fluoroisonicotinate (3-fin) ligand, termed as NKU-0803 . Conceivably, this fluorine-functionalization strategy not only introduces active binding sites but also fine-tunes the pore size. As a result, the framework shows high affinity to ethane (C 2 H 6 ) and propane (C 3 H 8 ) in terms of synergistic C H⋯π and C H⋯F hydrogen bonding interactions, contributing to exceptional low-pressure uptake capacity of C 2 H 6 (44 cm 3 g −1 at 10 kPa and 298 K) as well as commendable adsorption selectivities of C 2 H 6 /CH 4 (77) and C 3 H 8 /CH 4 (295) at 100 kPa and 298 K. Dynamic breakthrough experiments prove that the MOF could effectively separate polymer-grade CH 4 (>99.99 % purity) from C 3 H 8 /C 2 H 6 /CH 4 ternary mixtures (5/10/85, v / v / v ) at ambient conditions. The high CH 4 productivity (138 cm 3 g −1 ) and excellent recyclability position it as a promising industrially viable benchmark adsorbent for natural gas purification.
研究领域:
材料化学
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多孔材料
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气体分离
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能源化工
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吸附科学
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配位聚合物
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工业气体纯化
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Tong Li,Xiaoxia Jia,Hui Chen,Zeyu Chang,Libo Li,Yong Wang,Jinping Li
Adsorption separation technology using adsorbents is promising as an alternative to the energy-demanding cryogenic distillation of natural gas (CH4/N2) separation. Although a few adsorbents, such as metal–organic frameworks (MOFs), with high performance for CH4/N2 separation, have been reported, it is still challenging to target the desired adsorbents for the actual CH4/N2 separation under humid conditions because the adsorption capacity and selectivity of the adsorbents might be mainly dampened by water vapor. Except for the high CH4 uptake and CH4/N2 selectivity, the adsorption material should simultaneously have excellent stability against moisture and relatively low-water absorption affinity. Here, we tuned the ligands and metal sites of reticular MOFs, Zn-benzene-1,4-dicarboxylic acid–1,4-diazabicyclo[2.2.2]octane (Zn-BDC–DABCO) (DMOF), affording a series of isostructural MOFs (DMOF-N, DMOF-A1, DMOF-A2, and DMOF-A3). Because of the finely engineered pore size and introduced aromatic rings in the functional DMOF, gas sorption results reveal that the materials show improved performance with a benchmark CH4 uptake of 37 cm3/g and a high CH4/N2 adsorption selectivity of 7.2 for DMOF-A2 at 298 K and 1.0 bar. Moisture stability experiments show that DMOF-A2 is a robust MOF with low water vapor capacity even at ∼40% relative humidity (RH) because of the presence of more hydrophobic aromatic rings. Breakthrough experiments verify the excellent CH4/N2 separation performances of DMOF-A2 under high humidity.
研究领域:
材料科学
·
化学工程
·
环境科学
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DOI
高影响因子
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