ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 31
·期 5
·7027-7042
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IF 5.8
Chen Xuewen,Quan Hongping,Yu Jie,Hu Yuling,Huang Zhiyu
In order to reduce the impact of greenhouse gases on the environment, the development of various new CO 2 capture materials has become a hot spot. In this work, a novel composite amine solid adsorbent was prepared by simultaneously using tetraethylenepentamine (TEPA) and 2-[2-(dimethylamino) ethoxy] ethanol (DMAEE) for amine functionalization on the polyester microsphere carrier. The introduction of methyl methacrylate (MMA) with high glass transition temperature into the polyester carrier makes the carrier microspheres have high hardness. At the same time, the carrier also contains active epoxy groups and hydrophobic glycidyl methacrylate (GMA, which can undergo ring-opening reaction with composite amines to achieve high-load and low-energy chemical grafting of amines on the carrier. The composite aminated polyester microspheres were used as an efficient adsorbent for CO 2 in simulated flue gas. The results show that the synergistic effect of TEPA-DMAEE composite amine system in the adsorbent is beneficial to the improvement of CO 2 capture capacity. When the total amine content in the impregnating solution is 45 wt% and the composite amine ratio is TEPA: DMAEE = 6: 4, the CO 2 adsorption capacity can reach the optimal value of 2.45 mmol/ g at 70 °C. In addition, the composite amine microsphere adsorbent has cyclic regeneration performance. Importantly, through kinetic fitting, the Avrami kinetic model fits the CO 2 adsorption better than the quasi-first-order and quasi-second-order kinetic models, which proves that physical adsorption and chemical adsorption coexist in the adsorption process. This simple, long-term stable and excellent selective separation performance makes amine-functionalized adsorbents have potential application prospects in CO 2 capture. Graphical abstract
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
PubMed
高影响因子
MACROMOLECULES
·
2025
·
IF 5.2
Xiaolei Zhang,Xiaofei Sun,Lintong Zhou,Le Chang,Yan Zhang,Yingxia Zong,Jingjiang Sun,Qingfu Wang
Aqueous dispersion polymerization, predominantly based on the mechanism of radical polymerization, presents inherent limitations for polyester preparation through polycondensation or ring-opening polymerization approaches due to the substantial presence of water molecules. Herein, we report a facile and versatile strategy for the preparation of polyester microspheres (PEMs) via Passerini three-component dispersion polymerization (P-3CDP) under ambient aqueous conditions. By optimizing the polymerization parameters, we successfully synthesized a library of PEMs featuring diverse main-chain structures, including aliphatic carbon chains and functional backbones incorporating phenyl, alkenyl, biobased isosorbide, and furfuryl moieties, as well as reduction-responsive disulfide and pH-responsive Boc-protected l-glutamic acid groups. Comprehensive characterization of the resulting PEMs, including their chemical structures, microsphere morphologies, molar masses, and thermal properties, was performed using 1H NMR, SEM, DLS, SEC, and DSC measurements. CCK-8 assays with mBMSC cells were conducted to assess the cytotoxicity and verify biological safety. Taking the PEM containing a Boc-protected l-glutamic acid backbone as an example, its pH-responsive self-immolative property was verified, suggesting the feasibility of straightforward preparation of stimuli-responsive PEMs through the aqueous P-3CDP method.
研究领域:
材料科学
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生物医学工程
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高分子化学
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产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2014
·
IF 4.517
Chong Sun,Qiaorong Han,Daoying Wang,Weimin Xu,Weijuan Wang,Wenbo Zhao,Min Zhou
In this paper, we have synthesized hyperbranched polyester microspheres with carboxylic acid functional groups (HBPE-CA) and developed a label-free electrochemical aptamer biosensor using thrombin-binding aptamer (TBA) as receptor for the measurement of thrombin in whole blood. The indium tin oxide (ITO) electrode surface modified with HBPE-CA microspheres was grafted with TBA, which has excellent binding affinity and selectivity for thrombin. Binding of the thrombin at the modified ITO electrode surface greatly restrained access of electrons for a redox probe of [Fe(CN) 6 ] 3−/4− . Moreover, the aptamer biosensor could be used for detection of thrombin in whole blood, a wide detection range (10 fM–100 nM) and a detection limit on the order of 0.90 fM were demonstrated. Control experiments were also carried out by using bull serum albumin (BSA) and lysozyme in the absence of thrombin. The good stability and repeatability of this aptamer biosensor were also proved. We expect that this demonstration will lead to the development of highly sensitive label-free sensors based on aptamer with lower cost than current technology. The integration of the technologies, which include anticoagulant, sensor and nanoscience, will bring significant input to high-performance biosensors relevant to diagnostics and therapy of interest for human health.
研究领域:
生物传感技术
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纳米科学
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医学诊断
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Hao Shen,Zhimin Tan,Yuqing Li,Lili Yang,Dengteng Ge
Capturing thermal radiation using highly infrared (IR)-transparent materials have drawn great attention for diverse applications, such as IR guidance, IR detection, thermal radiation imaging, radiative cooling etc. However, the previously reported IR-transparent materials have the bottleneck of lacking superhydrophobicity, resulting in the degradation due to the dust, fog, rain, frost outdoors. Here, a durable IR-transparent superhydrophobic coating is reported via the spraying of polyester (PE) microspheres and fluorinated ZnS nanoparticles (NPs). Due to the high transmittance of ZnS and PE, the coating shows excellent IR transparency (around 90 %) in 8 ∼ 14 μm thermal IR band. Benefitting from the robustness of 3D connected PE network, the coating maintains superhydrophobicity after 180 cycles of linear wearing under 6 kPa. Moreover, the water jetting/atomizing/dust tests indicate that this coating effectively ensures the high accuracy of IR imaging lens under rainy/foggy/dusty environments. This coating on fabrics also achieves a remarkable radiative cooling effect for outdoor conditions to keep human body comfortable. With its facile preparation and versatile features, this coating has great potential on IR window, IR imaging and personal thermal management.
研究领域:
材料科学
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光学工程
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热管理技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）