CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Huayu Liu,Lijia Liu,Yudan Wang,Fanshuai Gao,Yawen Liu
Methylmercury (CH 3 Hg + ) is present at low levels in natural waters and is difficult to remove. Here, an organic hypercrosslinked porous polymer material (HCP-DS) enriched with disulfide bonds was designed and synthesized from dibenzyl disulfide via a Friedel-Crafts alkylation reaction. The resulting material demonstrated a high efficiency to remove methylmercury from water at ppb levels. The adsorption capacity reached 1174.765 μg·g −1 at an initial methylmercury concentration of 500 μg·L −1 . Notably, the material maintained excellent adsorption capacity across a wide pH range, in the range of pH = 5–12, the removal rate (R) of methylmercury can get over 95.56 %, even at pH = 2 or 13 it could get the removal rate over 85.08 %. HCP-DS proves great environmental adaptability, even in the presence of other metal cations or high ionic strength in aqueous environments, HCP-DS exhibited robust adsorption of trace methylmercury. Furthermore, the material demonstrated excellent reusability, maintaining high performance over five adsorption–desorption cycles. Importantly, HCP-DS effectively adsorbed methylmercury in the presence of organic matter (R > 89.24 %), it also performs an excellent capacity to remove methylmercury in a variety of natural water environments such as seawater, surface water, and groundwater underscoring its potential for practical applications in water purification.
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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DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Ying Qiu,Huiyu Liu,Rui Shan,Wei Zhao,Junhua Zhang,Jun Zhang,Haoran Yuan
In the present study, the ultra-large specific surface area Zr-decorated hyper-cross-linked polymers (HP) were firstly developed for the catalytic production of furfuryl alcohol (FOL) from furfural (FAL) using isopropanol as both the hydrogen source and solvent. Comprehensive characterizations were performed to uncover the basic physicochemical properties. The as-prepared Zr/HP showed large specific surface area of ∼1000 m 2 /g, good dispersion of Zr species, plentiful acidity and basicity. 2.5Zr/HP presented the highest activity in the FAL-to-FOL transformation, wherein 97.4 % FAL conversion and 92.9 % FOL yield were achieved within 2 h at 160 °C. The recycling experiments revealed that the as-fabricated Zr-decorated hyper-cross-linked polymers presented good recyclability without significant loss of reactivity even after two consecutive cycles, owing to the strong interaction between hyper-cross-linked polymers and grafted Zr species. Kinetical analysis verified that the activation energy for transfer hydrogenation of FAL could be lowered to a certain degree, especially in the case of lower Zr loadings. More gratifyingly, the Zr-decorated hyper-cross-linked polymers were capable of catalyzing other unsaturated compounds with high conversion rates. In addition, the plausible pathway for the FAL-to-FOL transformation over Zr-decorated hyper-cross-linked polymers was proposed.
研究领域:
化学工程
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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
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2024
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IF 8.1
Mengting Wang,Zhongyang Wang,Muhammad Adnan Akram,Kuo Chen,Lihua Zhao,Q. Jason Niu
Polyamide pervaporation membranes, with excellent stability and resist swelling at high temperatures, enable superior capacity for high-salinity solutions compared to other pervaporation membranes. However, the low permeate flux impedes their technical realization for large-scale applications. Here, we prepared a pervaporation membrane based on a 5-sulfinyl amino isophthaloyl dichloride (NSO) monomer. NSO contains a sulfinamide group, which can be used as an acid-binding agent to combine with H + to promote the interfacial polymerization (IP) reaction, thus inhibiting the growth of the polyamide layer and leading to the formation of a thinner separation layer. In addition, the sulfinamide group is converted to an amino group during the IP process, which can continue to participate in the IP reaction and further enhance the cross-linking degree of the separation layer. The resulting ultrathin and highly crosslinked polyamide pervaporation membranes show exceptional performance in pervaporation desalination, achieving a pervaporation flux of 50.54 kg m −2 h −1 and a rejection of 99.99% when measured with 3.5 wt% NaCl solution as feed. NSO monomer presents a promising pathway to overcome the limitations of pervaporation desalination membranes, advancing the application potential of polyamide membranes for practical high-salt wastewater treatment.
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
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IF 4.2
Daoguang Teng,Peng Jin,Shiqiao Yang,Wenhuan Guo,Zhuang Zhao,Guoli Zhou,Peng Li,Yijun Cao
Various cost-effective polycyclic aromatic hydrocarbons (PAHs) were used to fabricate hyper-cross-linked polymers (HCLPs) via an external cross-linker knitting method (ECLKM) followed by N-source impregnation modification. Multiple characterization techniques and thorough tests confirmed that the resultant thermally stable materials featured large specific surface areas (up to 2870 m2 g–1), narrow pore distributions (<0.70 nm), and high pore volumes (up to 1.09 cm3/g). Effects of porosities and N-doping modification ways on HCLPs’ CO2 capture capacities have been fully studied via controlling experiments. Remarkably, HCLP 1 prepared using naphthalene without further modification possessed the highest CO2 uptake capacity (up to 3.8 mmol g–1), indicating that porosities dominated the CO2 uptake process of HCLPs compared with N-doping modification. This study offers a facile strategy to construct HCLPs with great CO2 capture performances using PAHs via a simple one-pot ECLKM.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2015
·Vol. 3
·期 8
·4604-4611
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IF 7.443
Wei Wei,Rongjie Lu,Shuyuan Tang,Xiaoya Liu
Highly cross-linked and organic–inorganic hybrid poly(cyclotriphosphazene-co-curcumin) microspheres (PCPC-MS) were facilely prepared by a one-step precipitation copolymerization method, and served as a fluorescent chemical sensor for the detection of picric acid (PA) in solution phase. The photochemically inert cyclotriphosphazene moieties intentionally introduced into the structure of the sensor could play a role not only in connecting curcumin fluorophores to construct a highly cross-linked fluorescent architecture with excellent thermal stability and photobleaching stability, but also in effectively enriching PA from bulk solution to the surface of the sensor by the acid–base interaction between the acidic phenolic hydroxyl groups of PA molecules and the electron-rich nitrogen atoms of the cyclotriphosphazene units, which might facilitate the formation of a ground-state non-fluorescent complex of the microspheres and PA as well as the excited-state energy transfer from the microspheres to PA. Therefore, PCPC-MS exhibited a fluorescence quenching response towards PA with high sensitivity, efficiency, and selectivity over a number of other analytes such as 2,4,6-trinitrotoluene, 2,4-dinitrotoluene, 1,3-dinitrobenzene, 4-nitrotoluene, nitrobenzene, 4-benzoquinone, chlorobenzene, and nitromethane in methanol. In addition, PCPC-MS could also effectively detect PA in the presence of the other analytes, indicating their remarkable ability for resisting interferences and specific recognition of PA. This study provides new insights into the design and preparation of a polymer-based fluorescence chemical sensor for PA with low toxicity, a simple preparation process, and high selectivity.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
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2020
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IF 3.448
Ting Liu,Baoyou Pei,Jinqing Lin,Guangya Zhang
β-1,3-xylanase plays an important role in the conversion of algal biomass into renewable chemical commodities and functional xylooligosaccharides. Efficient immobilization of the target enzymes that could integrate the separation, purification, and immobilization in one-step may have great potentials. The cheap and easily obtained pitch was adopted as the raw material to prepare the hyper-cross-linked polymers with the specific surface areas of 560 m 2 /g and the Ni 2+ loading about 80 mg/g. As a carrier, it could immobilize and purify the β-1,3-xylanases directly from the crude cell debris with the activity recovery of (80.66 ± 0.87) %. The half-life of the immobilized β-1,3-xylanases was 50 min at 50 °C, which was significantly longer than the free ones with only 14 min. The immobilized β-1,3-xylanases could retain 65 % of the activity after stored at 30 ℃ for 80 h, they could also retain 87 % of the original activity after 15 cycles of reuse. In terms of potential applications in the manipulation of algae Caulerpa lentillifera , the immobilized β-1,3-xylanases could release 30 % more reducing sugar in 85 h. The method proposed here is promising for algal biomass manipulation because of its low cost, stable storage, convenient recycling and excellent reusability.
研究领域:
生物化学
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可再生能源
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酶工程
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2020
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IF 3.573
Ling Wang,Ying-shuang Zhang,Hong-ru Jiang,Hui Wang
As promising adsorbents in carbon capture and storage, hyper-cross-linked polymers (HCPs) require high CO2 uptake and selectivity over N2 and CH4. Herein, we reported a series of novel carbonyl-incorporated HCPs using oxalyl chloride as a cross-linker. To enhance the CO2 adsorption capacity and gas selectivity, the fabricated HCPs were further modified by methods of amine functionalization (HCPs-N) and KOH activated carbonization (HCPs-C). Accordingly, the maximum CO2 adsorption capacity of HCPs (HCP3) reaches 198 mg/g owing to abundant carbonyl groups and dominant microporous structures (SBET1047 m2/g, Smicro628 m2/g). Meanwhile, under the effect of amine functionalization, the selectivity of the obtained HCPs-N (HCP3-N) is greatly improved, reaching a maximum of 85.71 (SCO2/N2) and 8.12 (SCO2/CH4). Furthermore, after KOH activated carbonization, the amount of CO2 adsorption of HCPs-C (HCP3-C) significantly increases to 270 mg/g due to the higher specific surface area (SBET1421 m2/g) and arising ultramicroporous structures (Vultra0.26 cm3/g). Aromatic polymers with microporous structures and carbonyl group can be prepared and functionalized to improve the CO2 adsorption and gas selectivity by simple and mild reactions. Our study provides new options for CO2 capture of HCPs and provides a new idea for the synthesis of new HCPs.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Jiang Wei,Jia Jia,Tong Liao
One of the challenges in water pollution control is the design of adsorbents aimed at achieving low cost, ultrafast, and selective adsorption of pollutants. Hypercrosslinked-polymers (HCPs) possess abundant microporous structures and advantages such as the ability to manipulate the framework structure, making them highly valuable in the field of adsorption. Three HCPs namely polythiophene (Th-1), polypyrrole (Py-1), and polyfuran (Fu-1) were synthesized through a Friedel's alkylation reaction utilizing different functional monomers (thiophene, pyrrole , and furan) employing a knitting strategy. The HCPs exhibit a heterocyclic structure (C-S-C, C-N-C, C-O-C) with remarkable charge selectivity as well as strong resistance to acids and alkalis. The HCPs, with varying functional monomers, demonstrate selective adsorption of dyes based on their charges and release of dyes dependent on solvent and pH conditions. The ease of synthesis, cost-effectiveness, and high reusability render these HCPs suitable for further design optimization through the utilization of diverse functional monomers to achieve efficient adsorption and removal of environmental pollutants from water.
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
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Boning Su,Mingchuan Yang,Bin Gao,Xiangjie Zhao,Ziyao Li,Shugang Zhang,Dongdong Cheng,Tianlin Shen,Yuanyuan Yao,Yuechao Yang
The maturation of biobased polymer synthesis process has led to the rapid adoption of biobased controlled-release fertilizers (BCRFs). Despite this progress, the loose structure, low cross-linking density, and poor water repellency of current biobased coatings result in short controlled-release periods, which do not meet the long-term nutrient demands of crops throughout their reproductive phases. Moreover, existing modifications to address these issues often involve the addition of external additives, which can increase biotoxicity and cost. In this study, castor oil-based hyperbranched polyol (COHBPs) was synthesized from castor oil (CO) using a “one-pot method.” We report the development of high cross-linking density biobased hyperbranched polyurethane (COHBPPFs) as a coating for BCRFs. Gel content and SEM analysis demonstrated that COHBPPFs exhibited a high degree of cross-linking. Mechanical testing using an electronic universal testing machine, along with AFM results, highlighted the superior mechanical properties of COHBPPFs compared to traditional coatings. COHBPPFs significantly enhanced controlled release performance, with a 3% coating content providing nearly 50 days of controlled release, a marked improvement over conventional coatings. The controlled release mechanism of COHBPPFs was elucidated by modeling the cross-linking process of COHBPs with PAPI. This study offers a comprehensive examination of CRF coatings from multiple perspectives and provides valuable insights into the development of high cross-link density, environmentally friendly, and renewable biobased CRFs.
研究领域:
材料科学
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农业科学
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环境科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
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IF 6.9
JiaJun Bi,KaiYu Bao,Min Zhao,YuPeng Zha,TianHao Chen,ChangYan Huang,ZhanAo Lv
The environmental remediation is a growing focus in recent years. Hypercrosslinked polymers (HCPs) is highly valuable as prominent adsorbents for pollutants due to its structural designability, low production costs and high intrinsic porosities. In this study, a novel phenol-based hypercrosslinked polymer namely HCPs-TBP with abundant O sites was constructed via a one-step hyper-crosslinking reaction. The structure and thermal stability of HCPs-TBP was confirmed by Fourier transform infrared (FT-IR) spectra, scanning electron microscopy (SEM), elemental mappings, powder X-ray diffraction (PXRD) patterns, N 2 adsorption–desorption, 13 C nuclear magnetic resonance spectroscopy ( 13 C MAS NMR), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS). Combining with the electron-donor –OH functional groups, electron-rich conjugated-π benzene rings structure and the abundant pore structure, the phenol-functionalized porous polymers showed good adsorption capacity for the tetracycline and iodine, and the adsorption capacity of I 2 solution achieved 237.6 mg/g, accompanied by repeating 5 times adsorption of tetracycline and iodine without any structure collapse. Additionally, the quasi-first-order and quasi-secondary kinetic model, as well as Langmuir, Freundlich and Tempkin models, successfully described the adsorption kinetics and isothermal adsorption of iodine solution by HCPs-TBP. The study unlocks new possibilities for further application of HCPs in adsorption of environmental pollutants from water.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 3
·2712-2728
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IF 2.993
Hu Aibin,Yang Xiaofang,You Qingliang,Liu Yanyang,Wang Qunying,Liao Guiying,Wang Dongsheng
A novel magnetically hyper-cross-linked polymer (Fe 3 O 4 @HCP-NH 2 ) was prepared in this study, which combined the advantage of the amino-modified HCP-NH 2 and the magnetic Fe 3 O 4 nanoparticles. The Fe 3 O 4 @HCP-NH 2 composite has a high specific surface area (532.62 m 2 g −1 ), well-developed mesoporous (0.3786 cm 3 g −1 ) and good magnetic property. This Fe 3 O 4 @HCP-NH 2 composite exhibits excellent adsorption ability for tetracycline, and the maximum adsorption capacity calculated by Langmuir model at 298 K is up to 694 mg g −1 . The adsorption mechanisms could be attributed to the complexation interactions, hydrogen bonding and cation exchange, and the dominant interaction was the surface complexation which was elucidated by X-ray photoelectron spectroscopy analysis. In addition, the composite can be rapidly separated and maintains high adsorption performance after five regeneration cycles. More importantly, it can be used as a broad-spectrum and highly efficient adsorbent for organic contaminants including methyl orange, methylene blue, bisphenol A and 2,4-dichlorophenol removal from contaminated water. This work demonstrated that the Fe 3 O 4 @HCP-NH 2 composite would be the most promising candidates for application in the adsorption of organic 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
Polymer Chemistry
·
2016
·Vol. 7
·期 27
·4531-4541
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IF 5.687
Chunbao Du,Nan Zhang,Shichao Ding,Xumian Gao,Ping Guan,Xiaoling Hu
The surface functionalities of nanomaterials provide an invaluable resource to biomaterials science in the form of biomolecular recognition, sensing, self-assembly and drug delivery. This paper presents a one-step procedure for the facile preparation of highly cross-linked raspberry-like nano/microspheres by the dispersion polymerization of polyethylene glycol dimethacrylate and N-vinylimidazole. Ionic liquid-functionalized reactions were then conducted on the surface of the raspberry-like nano/microspheres to investigate the effects of the functional groups on the peptide adsorption in aqueous media. Various characterization methods were employed to characterize the as-prepared nano/microspheres and to track the experiment process. The results reveal that the nano/microspheres were raspberry-like, monodisperse and stable. It was also found that the adsorption of immunostimulating hexapeptide from human (IHH) was correlated with the surface properties of the ionic liquid-functionalized nano/microspheres, which demonstrated their potential use for the immobilization and release of IHH in practical application.
研究领域:
生物材料科学
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药物递送
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纳米技术
✓ 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）