JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shuaiyang Jiang,Ya Liu,Yulu Liu,Dongfang Wang,Xiaofeng Wang,Qian Li
A portable home hemodialysis device is a miniaturized and easy-to-operate medical apparatus designed for patients with chronic kidney disease, enabling them to conveniently perform hemodialysis at home or while traveling. However, it imposes high requirements on the dialysis membrane in terms of dialysis efficiency, adsorption capacity, and blood compatibility. In this study, the composite membrane was fabricated through electrospinning, which is an in situ synthesis of carbon nano tube (CNT) bridged UiO 66 (COOH) 2 on PTFE fibers. UiO 66 (COOH) 2 increased the adsorption site by association with CNT, and achieved the adsorption of creatinine by hydrogen bond and π bond, which greatly reduced the usage of dialysis solution. UiO 66 (COOH) 2 and CNT were first combined for creatinine adsorption, and its maximum static adsorption capacity was 66 mg/g. During the dialysis, the yielding membrane showed a creatinine clearance of 64.89% and a resistance protein rate of more than 98%. Compared with pure PTFE dialysis membrane, the amount of dialysate used to achieve the same dialysis effect was merely 1/10. Furthermore, the membrane has a hemolysis rate of 2% and a low platelet adhesion rate, which shows excellent blood compatibility. Therefore, the dialysis membrane prepared in this study is expected to promote the development of portable home hemodialysis devices.
研究领域:
材料科学
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医学工程
·
肾病治疗
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
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IF 3.5
Gao Shuang,Yu Yue,Li Yun-heng,Yao Sheng-yi,Song Ya-kai,Niu Lu-hao,Chen Xiao-lu
A series of molybdenum-based catalysts were prepared using UiO-66 modified with functional ligands as a carrier. The catalyst structure was characterised using XRD, FT-IR, N 2 adsorption desorption isotherms, TEM and XPS. The introduction of -F atom expanded the pore structure of catalyst and increased the specific surface area, resulting in a greater number of active site and more dispersion. The introduction of functional ligands (-F, -NO 2 ) enhanced the electron attraction capacity of catalyst, and improved the microenvironment around the active centre of the catalyst, which contributed to enhance the catalytic performance. The effect of catalyst structure on catalytic activity was investigated using the removal of dibenzothiophene (DBT) from simulated oils as a probe reaction. Under the optimum reaction conditions, the catalyst (UiO-66-NO 2 -F-MoO 3 ) was found to be the most effective for the DBT conversion, reached 99.1%. After 5 desulfurization experiments, the desulfurization activity of the catalyst cound still reach 90.6 %, indicating that the catalyst had good cyclic stability, which was closely connected to the hydrophobicity of the -F atom. The introduction of -F atom improved the hydrophobicity of the catalyst so that the generated sulfone was not easy to be adsorbed on the active site and improved the cyclic stability of the catalyst. Furthermore, the increase in the number of Mo active species was important in improving the cyclic stability of the catalyst.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 31
·15064-15073
·
IF 9.931
Xu Jiang,Songwei Li,Shanshan He,Yongping Bai,Lu Shao
Both material choice and filler/organic interface are crucial in mixed matrix membranes (MMMs) for sub-nano-size gas separations and yet, the interface–performance relationship is still a subject of intense debate due to challenging interfacial detection. Herein, two UiO-66-type MOFs (amino-functionalized UiO-66-NH2 and isopropenyl-functionalized UiO-66-MA) are incorporated in cross-linked CO2–philic polyethylene oxide (PEO) matrix based on judicious material screening for CO2 capture. The reactive material UiO-66-MA is stitched together with methacrylate-capped PEO in situ during UV-induced copolymerization to generate highly efficient gas transport passages with conceivably good interfaces. Poor interface is observed by substituting UiO-66-MA with non-reactive UiO-66-NH2 in MPCM (MOF/polymer composite membrane). The interfacial conditions of CO2–philic MPCMs are carefully assessed via advanced physicochemical characterizations for clarifying the correlation between interface and separation performance. The reactive material UiO-66-MA containing MPCM with good interface demonstrates higher gas permeability (up to 1450 barrers) with similar selectivity (up to 45.8 for CO2/N2) when compared to non-reactive UiO-66-NH2 containing MPCM. The mixed gas test also shows high CO2 permeability of 1439 barrer and CO2/N2 selectivity of 37.6 in our MPCM. We also observe unexpected suppressed plasticization/swelling behaviour in UiO-66-MA containing MPCM and enhanced plasticization in UiO-66-NH2 containing MPCM through analysis of gas separation performance in the range of 1–10 atm, which might be utilized as a potential interface assessment tool for nanocomposites. Moreover, the performances of our CO2–philic MPCMs can be optimized further to surpass the (2008) Robeson Upper Bound for highly efficient sustainable CO2 capture.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Xiaowen Huo,Yingying Zhao,Zhaojing Jing,Jian Wang,Haitao Wang,Na Chang
One of the main approaches to improve the permeability of membranes is the preparation of PA layers with nanostructures based on metal organic framework (MOF) materials. However, the interaction between MOF additives and PIP/TMC monomers and the mechanisms affecting the interfacial polymerization process have not been elucidated. In this study, the adsorption conformation between the two-phase monomers and UiO-66 (UiO-66-TFA) was established by density functional theory (DFT) calculations based on Lewis acid-base theory. The results showed that the hydrogen bonding force between UiO-66 (UiO-66-TFA) with defect structures and PIP (−199.62 kcal/mol) was significantly stronger than that between UiO-66-TFA and TMC (−26.39 kcal/mol). Moreover, two PA layers with ridged and granular morphologies were prepared by dispersing UiO-66/UiO-66-TFA in the water/organic phase to influence interfacial polymerization, using UiO-66-TFA nanoparticles as additives. Among them, the PA layers showed more pronounced morphological transformation and excellent separation properties when UiO-66-TFA was used as an additive in the aqueous phase . The representative ridge-like nanostructured nanofiltration membrane showed a pure water flux of 27.51 L·m −2 ·h −1 and 98.8 % retention of Na 2 SO 4 . This study provides a new idea for the preparation of PA layers with different surface nanostructures based on the IP reaction of nano-additives.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Caiqin Chen,Dezhi Chen,Shasha Xie,Hongying Quan,Xubiao Luo,Lin Guo
Herein, we studied the adsorption behaviors of organic micropollutants, such as anticonvulsant carbamazepine (CBZ) and antibiotic tetracycline hydrochloride (TC), on zirconium metal–organic framework UiO-66 in water. The maximum adsorption capacities of CBZ and TC on the UiO-66 were 37.2 and 23.1 mg·g–1 at 25 °C, respectively. The adsorption isotherms and kinetics of CBZ and TC were well described by using the Langmuir model and pseudo-second-order model, respectively, and the adsorptions on UiO-66 are endothermic reactions. The adsorption capacities of CBZ and TC on UiO-66 were decreased with the increase of solution pH. The presence of humic acid could improve the adsorption of CBZ and TC on UiO-66, but K+ ion inhibited their adsorption obviously. In addition, Ca2+ and Al3+ ions also suppressed the adsorption of TC on UiO-66. The competitive adsorption suggested that the adsorption sites for CBZ on UiO-66 were different from those for TC. The surface interactions between UiO-66 and the two micropollutants were demonstrated by powder X-ray diffraction, Fourier transform infrared (FT-IR) spectra, scanning electron microscopy, nitrogen adsorption/desorption isotherms, and X-ray photoelectron (XPS) spectra. The characterizations showed that the adsorption of CBZ on UiO-66 is mainly a physisorption, and the hydrophobic effect played a crucial role during the adsorption of CBZ; meanwhile weak π–π electron donor–acceptor interaction and electrostatic attraction also existed. However, the adsorption of TC on UiO-66 is mainly a chemisorption; in addition to the strong electrostatic attraction and π–π electron donor–acceptor interaction forces, the nitrogenous groups of TC played an important role, which can replace the carboxylic groups coordinated with Zr–O clusters. The obtained results will aid us to comprehend the surface interaction between organic micropollutants and UiO-66 and expand the application of UiO-66 as sorbent for removal of pollutants from water.
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
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Jiajun Yu,Xiao Wang,Guanhong Lu,Haijiao Xie,Xiaofeng Xie,Jing Sun
The purification of oxygenated volatile organic compounds VOCs (OVOCs), important precursors of ozone and particulate matters, has triggered intensive research interests. UiO-66 with high photocatalytic activity have shown great potential. However, the lack of active sites severely limited the trapping and degradation of OVOCs. Herein, reo-UiO-66 with increased specific surface area, hierarchical porous structure and tunable acidic/basic sites was synthesized by simply adding water as the modulator. XRD, TGA and FTIR results confirmed the formation of reo-defects, which significantly affected the surface hydrophilicity and active sites of UiO-66. The adsorption of Lewis acidic acetaldehyde was enhanced by 265 times with coordinative unsaturated Zr acting as the dominant adsorption sites. The degradation efficiency of typical OVOCs (acetaldehyde and acetone) increased from 0% and 25% to 50% and 73%, respectively. This work provided a facile method to modulate the micro-environment in MOFs for the efficient capture and catalytic purification of OVOCs.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2020
·Vol. 22
·期 3
·1-12
·
IF 2.132
Ma Wenzhong,Li Taiyu,Zhang Qi,Zhong Jing,Matsuyama Hideto
Hydrophilic UiO-66 crystals with superior water adsorption ability were synthesized and incorporated into the polyimide (PI) membrane for efficient aprotic solvent separation via pervaporation. The effect of the different UiO-66 addition in the pyromellitic dianhydride (PMDA)-2, 2-bis[4-(4-amlnophenoxy)phenyl]propane (BAPP)-based PI membrane on the membrane structure, thermal stability, surface hydrophilicity, solvent-resistant, and pervaporation performance was systematically studied. The UiO-66/PI hybrid membranes with small amount content (2 wt%) exhibited high hydrophilicity and excellent swelling resistance due to the superb dispersion benefiting from the excellent complexation of UiO-66 and PI chain. The effects of operational variables such as operating temperature and concentration of feed solution on the pervaporation separation performance of the hybrid membranes with different UiO-66 loadings were investigated. When the mass fraction of UiO-66 was 2 wt%, the hybrid membranes show the permeation flux of 109.7 and 57.1 g/(m 2 h) and separation factor of 34.1 and 133.9, respectively, for DMF/H 2 O and DMAc/H 2 O systems.
Graphical abstract
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Zhaojie Wang,Qinglong Liu,Xinle Sun,Caifeng Xia,Qikang Yin,Maohuai Wang,Xiaodong Chen,Huili Zhang,Shuxian Wei,Xiaoqing Lu,Siyuan Liu
MOFs-filled mixed matrix membranes (MMMs) have great potential to break the trade-off effects of traditional gas separation membranes. However, achieving good interfacial compatibility and adequate dispersion of the MOF is not straightforward. In this study, a continuous postmodification was developed for advanced CO2/N2 MMMs. UiO-66-NH2 was easily modified with trimesoyl chloride (UiO-66-TMC) and polyethylene glycol (UiO-66-PEG) sequentially, which was utilized as fillers to construct polyimide (PI) mixed matrix membranes (MMMs). Rich interactions between modified UiO-66-NH2 and the PI polymer contribute to efficient CO2 and N2 separation. At 25 °C and 0.1 MPa, UiO-66-TMC/PI MMMs showed a CO2/N2 selectivity of 55.3, and a CO2 permeability of 616.17 Barrer, and those are 56.7 and 686 Barrer for UiO-66-PEG200/PI MMMs. Both of their CO2/N2 separation performances exceed the 2008 Robeson upper bound. The ether bonds in PEG exhibit strong interactions with the CO2 molecules and improve the CO2 dissolution selectivity. Meanwhile, the introduction of organic ingredients realized good dispersion and interfacial compatibility within the PI matrix. This work lays the groundwork for the further fabrication of highly selective CO2 separation materials with specific microscopic interface structures and properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Ya Jiao,Xian Li,Guohao Cheng,Jingfan Chen,Li Wang,Yongli Liu,Guifen Zhu
Metal–organic frameworks (MOFs) are used as novel adsorption materials owing to their large surface area and tunable pore size. However, the lack of selectivity considerably limits their application. Consequently, designing functionalized MOFs with specific recognition abilities is essential for enhancing their adsorption performance. Herein, we synthesized a functionalized NH 2 -UiO-66 composite modified by molecularly imprinted polymers (MIP@NH 2 -UiO-66) via a one-step polymerization process in which NH 2 -UiO-66 and MIP were formed simultaneously. Results demonstrate that MIP@NH 2 -UiO-66 effectively recognized sulfamethoxazole (SMX) in complex matrices. The adsorption equilibrium was reached in only 30 min, and this fast SMX adsorption on MIP@NH 2 -UiO-66 was described by the Avrami kinetic model, which indicates a spontaneous and exothermic adsorption process. Within the pH range of 3.0–10.0, MIP@NH 2 -UiO-66 exhibited an optimal binding capacity for SMX, and the maximum adsorption of SMX was 68.36 mg g −1 at 25°C, which exceeded those of existing adsorption materials (< 60.10 mg g −1 ). Additionally, MIP@NH 2 -UiO-66 was regenerated for ∼17 cycles compared to less than eight cycles for the other adsorbents. MIP@NH 2 -UiO-66 effectively removed 90.58%–99.60% of SMX from river water, rainwater, soil, sediment, chicken, pork, and milk samples, with a relative standard deviation of less than 4.43%. The superior adsorption of SMX on MIP@NH 2 -UiO-66 was primarily driven by the synergistic effects of the imprinting sites, hydrogen bonding, and electrostatic forces. The one-step polymerization method substantially simplified the synthesis process and reduced the costs, which are promising factors for the synthesis of MOFs with high selectivity.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ke Wu,Zhimin Yang,Sen Liu,Xishuang Liang,Teng Fei,Tong Zhang
Numerous applications require low humidity sensors that not only sensitive but also stable, small hysteresis, high resolution and fast response. However, most reported low humidity sensors cannot possess these properties at the same time. In this work, inspired by sea urchin , we developed an ionic liquid (IL) modified metal organic framework (UiO-66) based low humidity sensor. Owing to the synergistic effect of the hydrophilicity and ionic conductivity of IL and the steric hindrance effects of UiO-66, the optimized low humidity sensor simultaneously exhibits high response (47.5), small hysteresis (0.3 % RH), ultrafast response speed (0.2 s), high resolution (1 % RH), and excellent long-term stability (>120 days). In particular, the sensor has been proved to have potential applications in visual humidity detection and water source location. This work provides a preliminary design principle that will contribute to the preparation of high-performance low humidity sensing materials.
研究领域:
材料科学
·
传感器技术
·
仿生学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Pei Jia,Kairong Yang,Jinjie Hou,Yuanyuan Cao,Xin Wang,Li Wang
The increasing deterioration of ecosystem derived from heavy metals residues brings about the environmental and food contamination , which presses the exploration of facile platform for monitoring heavy metals. Herein, a ratiometric fluorescence sensor was designed for Hg 2+ detection based on the compound of UiO-66-NH 2 and Ru(bpy) 3 2+ (Ru@UiO-66-NH 2 ) which was synthesized by situ encapsulation. The innovative composite displayed two emission peaks at 437 and 604 nm, and the addition of Hg 2+ could only quench the blue fluorescence due to static quenching and photo-induced electron transfer mechanism, providing an internal standard to promote the precision. Under optimal conditions, the ratiometric Ru@UiO-66-NH 2 probe revealed outstanding anti-interference capability and performed with a great limit of detection (LOD) of 0.053 μM for Hg 2+ , which was 2-fold lower than that of single-color UiO-66-NH 2 . By merit of Ru@UiO-66-NH 2 , test hydrogels were fabricated to provide a tactics for visual, rapid and on-site detection of Hg 2+ . Additionally, the dual-emitting sensing platform presented satisfactory recoveries and reliabilities in lake water, tap water , and drink water, demonstrating the application potential of this proposed ratiometric fluorescence sensor for monitoring Hg 2+ .
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2022
·
IF 5.6
Jianqiu Lin,Guishun Li,Changkun She,Yu Zhang,Shaohua Liu,Chengbin Jing,Ya Cheng,Junhao Chu
Despite the remarkable development in conductive polymer-based NH 3 sensors, there are still several obstacles such as long response/recovery time and difficulty in detecting low concentrations of NH 3 . In this work, polyaniline (PANI) was modified using a metal-organic framework (MOF) UiO-66 to construct a microchannel tube NH 3 sensor. Scanning Electron Microscope (SEM) and Brunauer-Emmett-Teller (BET) characterizations disclose that the addition of UiO-66 could induce formation of a highly porous nanofiber PANI film. The sensor can realize the gas response up to 2540% for 100 ppm NH 3 , and 20% response to 10 ppb NH 3 with excellent reversibility and response/recovery time (25 s/14 s). The improved sensing performance is ascribed to the high specific surface area of the PANI/UiO-66 film. Furthermore, the sensor has a microchannel tube structure which can realize fast and effective on-time detection of small-volume NH 3 gas. The as-fabricated sensor could be a potential candidate in practical medical monitoring applications.
研究领域:
化学传感器
·
纳米技术
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材料科学
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分析化学
·
环境监测
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）