JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Tianqing Zhao,Jinkun Tan,Wanglin Zhou,Zhenbin Gu,Yongqiang Niu,Zhengkun Liu,Guangru Zhang,Wanqin Jin
BaZr 0.7 Ce 0.2 Y 0.1 O 3-δ (BZCY), a perovskite-type mixed protonic and electronic conducting oxide , holds significant potential for H 2 separation and purification as a membrane. The introduction of a porous modification layer as an exchange-active component offers a potential solution to enhance H 2 permeability. However, achieving the desired porous/dense structure presents a notable challenge for practical implementation. In this study, various methods were developed to address sintering kinetics, encompassing both chemical aspects (e.g., interlayer reactions) and physical factors (e.g., thermal expansion), for fabricating a porous BZCY modification layer on a 4-channel BZCY hollow fiber membrane. The optimal composite hollow fiber membrane , resulting from a combination of readily sintered hollow fiber and powders for constructing the porous layers , exhibits an exceptional H 2 permeation flux of 0.48 mL min −1 cm −2 at 900 °C using 50 % H 2 /N 2 as the feed gas, which represents a threefold increase compared to the performance of the bare BZCY membrane. The H 2 permeation flux stabilized at 0.52 mL min −1 cm −2 for 500 h under water vapor conditions. These findings enabled us to identify the most effective approach, unlocking the full potential of surface-modified hollow fiber membranes and advancing their capabilities in H 2 permeation applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Jialing Zhou,Hui Huang,Shunji Chen,Mengyuan Wang,Danna Zhao,Jun Yu,Senlin Jin,Yuan Zhong,Xiaoming Chen,Xiaocai Yu,Pengbo Liu,Jian Zhao
As 3rd generation semiconductor, GaN material is promising for biosensor application, owing to its excellent chemical stability and high carrier mobility. Herein, GaN porous-layer (GNP) was self-assembly grown on GaN-coated sapphire substrate without doping by using simple low-temperature (LT) growth. The GNP with a pore density as high as ∼2.1 × 10 3 μm −2 can be realized by optimizing the growth temperature (620 °C) and layer thickness (22.4 nm), and its normalized conductivity can be tuned by simply changing the thickness. The optimized GNP was applied to chemiresistive detection of Cu 2+ with a limit of detection (LOD) as low as 8 fM, a fast response speed of 1.5 min, a wide linear range (8 fM∼8 nM) and good repeatability. The LOD was improved 1.25∼10 6 fold compared with that of previously reported biosensor. The GNP biosensor features high sensitivity, simple structure, integratability, and low-cost. To our knowledge, it is the first time that GaN material was used for chemiresistive biosensor.
研究领域:
材料科学
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生物传感技术
·
纳米技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2019
·
IF 3.073
Kai Yang,Yifan Li,Zejun Zhao,Zhongliang Tian,Yanqing Lai
The amorphous porous layered-Al 2 O 3 derived from aluminium fumarate metal-organic frameworks (AlFu MOFs) by roasting at 773 K under air has been applied to remove fluorine ions from industrial ZnSO 4 solution. The amorphous porous layered-Al 2 O 3 was characterized by XRD, SEM and BET. The adsorption experiments were conducted under different conditions, including adsorbent dosage, initial pH, adsorption temperature and adsorption time. And the process of removing fluorine ions is well fitted with the pseudo-second-order kinetic model and Langmuir isotherm model, which is studied by the adsorption kinetics and isotherms. The theoretical maximum adsorption capacity was 12.05 mg g −1 . Moreover, the adsorption mechanism of the amorphous porous layered-Al 2 O 3 was analyzed by SEM-EDS and FTIR. The results indicate that the adsorption process is affected by complexation and ion exchange between fluorine ions and amorphous porous layered-Al 2 O 3 . The regeneration of the amorphous porous layered-Al 2 O 3 shows that the adsorbent could be reused to reduce the production cost.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Xuefeng He,Weihao Zhao,Yuan Zhou,Xiao Cheng,Yanxiao He,Xinghong Zhang,Haixing Chang,Nianbing Zhong,Hao Feng
On microfluidic platform, sample concentration plays a crucial role in on-chip detection, analysis and synthesis, etc. Evaporation-induced solvent removal is frequently applied to various application scenarios due to its simplicity and compatibility. However, the enclosed microfluidic channels often hinder the solvent vapor discharge during the evaporation process due to the formation of two-phase flow and interfacial instability. Herein, we propose a novel microfluidic evaporator incorporated with a photothermal porous layer for continuous sample concentration. By absorbing the sample fluid into the porous structure, the evaporator is capable of achieving volumetric heating of the sample fluid thus enhancing the solvent evaporation while the porous network ensured efficient vapor venting. Moreover, the thermal resistance of porous layer shields the heat transfer towards the bulk fluid therefore prevented the sample solution from overheating during the operation process. The results demonstrate the designed microfluidic evaporator exhibits good sample concentration capability under continuous flow conditions.
研究领域:
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROPHORESIS
·
2021
·Vol. 42
·期 24
·2664-2671
·
IF 3.535
Wei Zhou,Xinhong Yu,Yikun Liu,Wenqi Sun,Zilin Chen
Enhancing the specific surface area of stationary phase is important in chromatographic science, especially in open-tubular column in which the coating only exists on the inner surface. In this work, a porous layer open-tubular (PLOT) column with stationary phase of styrene and itaconic acid-copolymerized polymer was developed. Thermal-initiated polymerization method with strategies like controlling the ratio of reaction reagents to solvents and reaction time, confinement by the narrow inner diameter of capillary were used for preparing the stationary phase with uniform structure and relatively thick layer. Due to the high separation efficiency and capacity, the PLOT column was used for capillary electrochromatography (CEC) separation of multiple groups of analytes like alkylbenzenes, phenyl amines, phenols, vanillins, and sulfonamides with theoretical plates (N) up to 1,54,845 N/m. In addition, due to high permeability of the CEC column and large electroosmotic flow mobility generated by abundant carboxyl groups in the coating material, the PLOT-CEC column was successfully coupled with mass spectrometry (MS) through a sheath flow interface. The developed PLOT-CEC-MS method was used for the analysis of antiseptics like parabens and herbicides like pyridines.
研究领域:
分析化学
·
分离科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yanhua Tang,Na Ni,Nian Ding,Xinyu Yang,Wei Wei,Zeying Dou,Lei Jiang,Qianqian Su
To overcome the problems of small pore size and limited reaction space of silica colloidal crystal (SCC) films, an ordered porous polystyrene (PS) -TiO 2 interference enhanced substrate with large pore size, high porosity, good interference efficiency and transparency was developed by introducing a TiO 2 interference enhanced layer with dip-coating method. The obtained substrate consists of three parts: the nanoporous structure layer, the PS substrate layer, and the TiO 2 layer between the two layers. The optical and mechanical properties of the obtained substrate was studied and optimized. The results showed that the optimal thickness of the PS substrate layer was 0.2 mm and that of TiO 2 interference enhanced layer was between 200 ∼ 400 nm. Combined with the ordered porous layer interference (OPLI) system, a continuous flow biosensor platform for real-time monitoring of the specific binding of Staphylococcus aureus protein A (SPA) and human serum immunoglobulin G (hIgG) was constructed to simulate an antibody screening test. The signal response of the system was about 3.8 times that of the system constructed with SCC substrate under the same conditions. The development of this new substrate provides the necessary support for the application expansion of the OPLI system, and had good application prospects in antibody screening, target protein binding performance evaluation and antibody drug development.
研究领域:
生物传感器
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材料科学
·
光学
✓ 已验证
DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Xin Liu,Xudong Zhu,Mohamed Amara Camara,Qishu Qu,Yichu Shan,Li Yang
Immobilized enzyme micro-reactors (IMERs) are of vital importance in developing miniaturized bioanalytical systems and have promising applications in various biomanufacturing. An inherent limitation in designing IMERs is the one-dimensional cylindrical geometry of micro-channels that offers limited exposed surface area for molecular reorganization and enzyme immobilization. In this study, we report a robust capillary-IMER based on a three dimensional porous layer open tubular (3D-PLOT) column which is prepared by an easy-to-control surface modification strategy via single-step in situ biphasic reaction. The 3D-PLOT column with highly uniform porous geometry and narrow distribution of porosity can greatly enhance the surface-area-to-volume ratio of the micro-channels, showing the beneficial effects for enzyme immobilization to enhance reaction efficiency and shorten analysis time. Taking trypsin as a model enzyme, enzymatic activities of immobilized enzyme are analyzed. We compare enzyme assays using the proposed 3D-PLOT-IMER with those using normal capillary-IEMR without surface modification as well as free trypsin. The 3D-PLOT-IMER exhibits excellent stability and inter/intra-day reproducibility, and these characteristics imply the reliability of the proposed IMERs for accurate enzyme assay. The feasibility of the proposed method for potential application in biological analysis is demonstrated by coupling the 3D-PLOT-IMER with a nano-LC-MS/MS system for online digestion of standard proteins, cell extraction and living Hela cells. Our study show that the surface modification with the proposed 3D-porous layer is a simple and efficient approach for enzyme immobilization, and could be widely suitable for different kinds of IMERs.
研究领域:
生物化学
·
分析化学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Feng Wu,Yaoyang Li,Linlin Zhang,Yuchen Zhou,Yili Xu,Youpeng Cai,Lingling Ding,Leilei Zhang,Yanfeng Wang,Hui Qian
Extracellular vesicles (EVs) are progressively becoming novel instruments for clinical therapeutics and liquid biopsies. Due to the complexity of biofluids and the physicochemical properties of EVs, the biological activity, velocity, and efficiency of EV isolation are always unsatisfying. Here, we present a real-time isolation approach of EVs derived from cells and urine using ordered porous layer interferometry with a silica colloidal crystal film as the sensing substrate, achieving efficiency greater than 90%. The online concentration detection function is performed during the isolation process on the basis of its real-time monitoring characteristic. Using membrane protein markers of urine EVs as targets, this technique has a high diagnostic value for liquid biopsy of prostate cancer. Furthermore, we compared multiple EV membrane protein expression and binding dissociation kinetic data from cells and urine. In summary, this multifunctional approach provides a novel strategy for the rapid EVs isolation, concentration detection, drug target screening, and liquid biopsy of various body fluids.
研究领域:
生物医学工程
·
临床医学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Jinchuan Chen,Weiwei Lei,Chi Huang,Jiajia Wang,Yunxiang Zhang,Zhili Liu,Zhicai Xu,Kan Wang,Shuaiyi Guo
Coating carbon materials on the surface of magnetic metal is an effective strategy to obtain lightweight high performance anticorrosive absorbers. Herein, the structure of the dense anticorrosive shell (Co/C porous layer) coated on the surface of the magnetic core (Flaky carbonyl iron, FCI) was successfully constructed. And the electromagnetic parameters of the composites can be precisely adjusted by controlling the mass reaction ratio of polydopamine/sodium dodecyl benzene sulfonate modified Co/C composites (Co/C@PDA-SDBS) and polydopamine/polyethyleneimine modified FCI (FCI@PDA-PEI). When the reaction ratio was 4:6 (FCI@Co/C-4/6), the sample exhibited excellent microwave absorption performance with suitable impedance matching and strong attenuation ability. The minimum reflection loss ( RL min ) value reached − 72.6 dB at 14.8 GHz and the maximum effective absorption bandwidth (EAB) covered the Ku band (11.8–18 GHz) with a thickness of only 1.5 mm. Besides, the dense Co/C layer with effective isolation of FCI@Co/C-4/6 also represented the excellent corrosion resistance for its higher E corr (−0.193 V) and lower I corr (0.33 μA/cm 2 ). Therefore, our research provides a novel approach for reducing the application thickness of FCI and paves the way for commercial application of lightweight high performance anticorrosive microwave absorbents.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Bi Qicheng,Pang Huiwen,Qin Zhiyong,Mo Liuting
Nanocellulose aerogels have been considered as attractive sorbents for the remediation of oil spills due to their light weight, sustainability, and abundant pore constructure. However, nanocellulose aerogels integrating high mechanical robustness and efficient oil adsorption properties are still critical challenges. Herein, a highly hydrophobic and compressible oil adsorption aerogel with special porous lamellar structures, containing cellulose nanofibril (CNF) frameworks, SiO 2 @polydopamine (PDA) core-shell nanospheres, and hydrophobic modification by octadecyltrimethoxysilane (OTMS) silane long chains, is fabricated through the rapid dopamine (DA) co-deposition and silanization modification interface engineering. The core-shell particles with PDA as the binder and SiO 2 particles as the nano-sized structures were adhesively coated on CNF skeleton to introduce monolayer coatings. The synergistic effect of the SiO 2 @PDA core-shell nanospheres and OTMS silane long chains significantly improved stable hydrophobicity and environmental resistance of aerogels in harsh conditions. The unique porous architecture of the aerogel can not only enhance mechanical compressibility but guide the direction of oil and organic pollutants transport. The obtained aerogels showed excellent mechanical properties with a high compressive strength of 1.23 MPa and outstanding oil adsorption performance with a high oil capture capacity of 44.63g/g. This facile strategy holds great promise to develop sustainable, compressible, and effective oil absorbents for highly efficient oil adsorbents. Graphical abstract
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Wei Zhou,Wenqi Sun,Yikun Liu,Zhenkun Mao,Zilin Chen
Developing novel capillary electrochromatography (CEC) column with high separation efficiency and capacity is an essential work in CEC. In this work, porous layer open tubular (PLOT) column has been developed by co-polymerization of quaternary ammonium typed ionic liquid (IL), 1-allyl-methylimidazolium chloride (AlMeIm + Cl − ) with styrene (IL-styrene) and ethylene dimethacrylate (EDMA) for CEC-MS analysis. The PLOT-CEC column possesses high separation efficiency and capacity while keeping the inherent advantages of open tubular (OT) column unaltered, which is suitable for CEC analysis. Due to the uniform branch-like structure with large specific surface area, the IL-styrene based PLOT-CEC column showed excellent separation efficiency towards multiple kinds of analytes with theoretical plates up to N = 322,277 N/m for phloroglucinol . And thanks to the high permeability and large EOF mobility generated by positively charged ionic liquid, the PLOT-CEC column showed good performance in CEC-MS analysis of parabens , amino acids and peptides with stable separation and ESI spray . Good repeatability with relative standard deviations for intra-day, inter-day runs and between tubes less than 4.94% was obtained.
研究领域:
分析化学
·
生物分析
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemElectroChem
·
2017
·Vol. 4
·期 11
·2826-2834
·
IF 4.136
Shuxia Yuan,Chunxiang Lu,Ying Li,Xiaomin Wang
Graphical Method to the madness : Porous lamellar structure Ni(OH) 2 /RGO composites with a large capacitance are synthesized by using a facile two-step deposition/reduction method. The method promotes the deposition of more Ni(OH) 2 and full utilization of RGO. Moreover, additives are avoided. The Ni(OH) 2 /RGO composite synthesized by using the two-step method exhibits a high specific capacitance of 2877 F g −1 , long cycle life with capacitance retention of 86.5 % after 4000 cycles, and high energy density of 120.9 Wh kg −1 at a power density of 0.14 kW kg −1 . Ni(OH) 2 /RGO composite are synthesized though a facile two-step method, in which the Ni(OH) 2 deposition and GO reduction processes take place separately. The present methods promote the deposition of more Ni(OH) 2 and full utilization of RGO, owing to the high reactivity, good solubility, and dispersity of GO. Moreover, the utilization of additives is avoided. The Ni(OH) 2 /RGO synthesized by using the two-step method shows a uniform porous lamellar structure with a high specific surface area. When employed as a supercapacitor electrode material, the Ni(OH) 2 /RGO composite exhibits a high specific capacitance of 2877 F g −1 , long cycle life with capacitance retention of 86.5 % after 4000 cycles, and high energy density of 120.9 Wh kg −1 at a power density of 0.14 kW kg −1 . The Ni(OH) 2 /RGO composite prepared by using the two-step method in this work shows 11.8–85.1 % higher specific capacitances than composites fabricated by using the other method. The excellent performances and the facile synthesis method highlight the promising potential of the present Ni(OH) 2 /RGO composite in supercapacitor applications.
研究领域:
材料科学
·
能源存储
✓ 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）