JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Siyu Zhou,Xiaoquan Feng,Junyong Zhu,Qiangqiang Song,Guang Yang,Yatao Zhang,Bart Van der Bruggen
Although membrane separations have evinced an enormous potential in the treatment of dye wastewater, the ubiquitous membrane fouling leads to a dramatic decline of separation efficacy and life span, impeding the progress of membrane-based applications. The copper-triazolate MOFs (CuTz-1) exhibit robust thermal and chemical stability with a unique feature of degrading organic molecules under the visible light, rendering them highly promising for construction of self-cleaning membrane. This study presents the utilization of photocatalytic MOFs (CuTz-1) for construction of the CuTz-1/graphene oxide (CuTz-1/GO) composite membranes via filtration-assisted assembly followed by chemical crosslinking. The presence of CuTz-1 among the GO nanosheets promotes an enhancement of the GO interlayer distance, thereby promoting a higher water flux without compromising the dye rejections. The best-performing CuTz-1/GO membranes exhibits the high water permeance of 40.2 L m −2 h −1 bar −1 and superior dye rejections (Congo red: 99.4%, direct red: 98.2%, methyl blue: 94.9%), low salt rejections (e.g., NaCl: 0.3% and Na 2 SO 4 : 19.6%), as well as long-term nanofiltration stability. Furthermore, after visible light irradiation, the treated membrane was nearly recovered to have the original separation efficacy due to effective photocatalytic removal of the attached dyes from the membrane surface. The CuTz-1/GO membrane also exhibits an ultra-high bacteriostasis rate of 100%, probably to be ascribed to the combined antimicrobial effect of CuTz-1 and GO. This work is expected to give a useful guideline for developing loose nanofiltration membranes with favorable photocatalytic and antimicrobial properties, offering an appropriate solution of using self-cleaning membranes for the treatment of dye 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
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Zeyang Wu,Jie Fei,Chang Li,Jifeng Yan,Xinyu Ke,Lehua Qi
As a nanoscale carbon material, carbon spheres (CS) are expected to achieve ideal lubrication performance by reducing direct contact between friction pairs and bearing loads. In this work, 2D Cu-MOFs surface modified (CS@Cu(BDC)) CS was added to the base oil, which exhibited a remarkable reduction in friction coefficient and wear rate (62.2%, 33.9%), the width of the friction pair wear marks was decreased by 30.8% relative to the base oil. The improvement in performance can be attributed to the polishing, repairing, filling and tribo-film forming effects of CS@Cu(BDC). This work provided an effective strategy for diversifying the surface structure of CS and opened new avenues for the development of a new generation of green and efficient lubricant additives .
研究领域:
材料科学
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摩擦学
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环境科学
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产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 2
·1-9
·
IF 6.232
Hu Peng,Zhu Xiaoming,Luo Xiaohui,Hu Xiaofeng,Ji Liudi
The authors describe a novel electrochemical determination method for bisphenol A (BPA) based on the electrosynthesised Cu-BTC (H 3 BTC: trimesic acid) films. Using H 3 BTC as the ligand, Cu(NO 3 ) 2 as the precursor of copper ions, and triethylamine hydrochloride (Et 3 NHCl) as the probase source, Cu-BTC films were directly deposited on glassy carbon electrode (GCE) surface via cathodic electrochemical reduction under −1.30 V. Considering the electrocatalytic activity of metal center Cu 2+ , Cu-BTC films were applied to construct the electrochemical determination platform for BPA. Chronocoulometry and electrochemical impedance spectroscopy were used to study the signal enhancement mechanism. The determination conditions were optimized. As a result, a sensitive electrochemical method was constructed for BPA. The peak currents, best measured at voltage of 0.496 V vs. SCE (KCl saturated calomel reference electrode), increase linearly in the range from 5.0 to 2000 nM. The value of determination limit is 0.72 nM. The proposed method was successfully applied to determine BPA in spiked urine, spiked waste water samples and plastic products. The results were in good agreement with those obtained for the same samples by high-performance liquid chromatography (HPLC).
Schematics for the construction of electrochemical determination for bisphenol A.
研究领域:
分析化学
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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
Yujie Zhang,Wenmei Zhang,Guang Yang,Zhihao Chen,Wenhua Zhang
A series of copper triazolate metal-organic frameworks (MOFs), denoted as CuTz-1_X (X = CH 2 OH, Py, and FPh), were synthesized via doping functionalized triazole ligands (3,5-R 2 -tzH where R = CH 2 OH, Py, or FPh) into the reactant of parent CuTz-1 ([Cu 8 (3,5-Ph 2 -tz) 6 ](BF 4 ) 2 (CH 3 OH), where 3,5-Ph 2 -tz = 3,5-diphenyl-1,2,4-trizolate). The synthesized MOFs were thoroughly characterized via PXRD, 1 H NMR, SEM-EDS, EA, TG, etc. It was observed that doping ligands featuring similar size and structure with 3,5-diphenyl-1,2,4-triazole in the parent MOF CuTz-1 resulted in a higher incorporation quantity. Furthermore, the introduction of functional ligands into the modified MOFs, CuTz-1_X, led to enhanced adsorption performance for the removal of methyl blue (MeB) in comparison with that observed over the parent MOF. Especially, CuTz-1_Py, in which 3,5-bis(4-pyridinyl)-1,2,4-triazole was doped, exhibited the highest MeB adsorption capacity of 352.3 mg·g − 1 at 293 K. Besides, the adsorption capacity of MeB over CuTz-1_X MOFs materials maintained stable even in the simulated real water systems. More importantly, the adsorption efficiency of MeB over CuTz-1_Py was still 87 % after four cycles of adsorption experiments while preserving the crystallinity and morphology of the adsorbent, indicating that the modified MOFs materials (i.e. CuTz-1_X) could be promising candidates for wastewater treatment.
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
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 25
·12372-12380
·
IF 3.925
Juan Chai,Luohao Yuan,Shiwei Wang,Tong Li,Mingxue Wu,Zhiwei Huang,Hongfeng Yin
Three metal–organic frameworks {[Cu6(L1)4(DMF)(H2O)2·5H2O]}n (1), {Cu3(L1)2(phen)2(H2O)}n (2) and {[Cu8(μ3-OH)3(L2)4(NO3)(H2O)5]·3H2O}n (3) utilizing nitrogen-containing heterocyclic carboxylate bifunctional ligands (L1 = 5-(4-carboxypyridin-3-yl)isophthalic acid and L2 = 2-(5-carboxypyridin-2-yl)terephthalic acid) were self-assembled hydrothermally and characterized. MOFs 1–3 possess 3D networks which consist of three different types of Cu clusters {Cu2O2(OCO)4}, {Cu2O2N4(OCO)2} and {Cu4O10(OCO)4}, respectively. MOFs 1–3 efficiently catalyze the oxidation of cycloalkanes under mild conditions. Besides, the synthesized MOFs 1–3 exhibited high peroxidase-like activity and could be utilized to catalyze the oxidation of 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid ammonium salt) (ABTS) to produce green color in the presence of hydrogen peroxide (H2O2). The steady-state kinetics experiments of the oxidation of ABTS catalyzed by MOFs 1–3 were carried out, and the kinetic parameters were obtained. The results indicated that the affinity of MOFs 1–3 towards H2O2 and ABTS was higher than that of the natural horseradish peroxidase (HRP). The as-prepared MOF 1 can be applied for the colorimetric detection of H2O2 with a wide linear range of 0.5 to 200 μM and a limit of detection (LOD) of 0.097 μM. Therefore, the novel Cu-MOFs could be regarded as promising artificial enzyme mimics in catalysis, sensors and environment analysis.
研究领域:
材料科学
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生物化学
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分析化学
✓ 已验证
DOI
高影响因子
DESALINATION
·
2021
·
IF 9.501
Xu Ma,Xinyi Wan,Zhou Fang,Zhuoyi Li,Xiaobin Wang,Yue Hu,Mengyang Dong,Zhizhen Ye,Xinsheng Peng
Solar-driven interfacial desalination (SDID) has emerged as an efficient and eco-friendly technology to produce clean water. However, salt deposition on photothermal material severely restricts the operation stability and service life. Herein, this issue was addressed by regulating the oriented seawater transportation through flexible Cu(TCNQ) metal-organic frameworks (MOFs)-based nanorod arrays (MAS) and isolating the salt crystallization from the evaporating surface. The SDID device with the novel architecture is rationally designed, which not only shows good anti-salt deposition ability and superior clean water production performance, but also achieves simultaneous salt extraction. Under 1 sun irradiation, the MAS in SDID device displays an impressive water evaporation rate of 1.78 kg m −2 h −1 (projected area) and a high salt extraction rate of 47.0 g m −2 h −1 . Even at night, the MAS can also extract salt at the rate of 12.6 g m −2 h −1 . This work provides a new idea to design highly efficient multifunctional solar desalination device for seawater resource comprehensive utilization and zero-liquid discharge.
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
MATERIALS CHEMISTRY AND PHYSICS
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2024
·
IF 4.3
El-Refaie Kenawy,Elbadawy A. Kamoun,Zeinab S. Ghaly,Abdel-baset M. Shokr,Shahira H. EL-Moslamy,Ahmed S. Abou-Elyazed
In this study, we demonstrate the production of Cu-based metal-organic frameworks (MOFs) (HKUST-1) and F–Cu-MOFs (F-HKUST-1)-loaded electrospun polyvinyl alcohol/gelatin (PG) nanofibers for enhancing wound healing and antimicrobial activity in fabricated mats. Copper-and fluorine-based metal-organic frameworks were successfully prepared under different conditions. The MOF/PG nanofibers were characterized for their physicochemical properties, including mechanical strength and water uptake, using FTIR, XRD, SEM, EDX, and TGA analyses. The results revealed that MOFs and F-based MOFs incorporated into PG nanofibers exhibited good mechanical and thermal properties. FTIR and XRD analyses confirmed the functional groups and structural integrity of the prepared MOFs. The antimicrobial efficacy tests showed the highest growth reduction percentages in Staphylococcus aureus (99.72 ± 0.78 %), Klebsiella pneumoniae (97.76 ± 0.44 %), and Candida parapsilosis (94.50 ± 0.75 %). The biocompatibility of PVA, combined with gelatin's ability to stimulate epithelialization and granulation tissue development, contributed to improving the wound healing. The addition of HKUST-1 and F-HKUST-1 further enhanced the antimicrobial and wound healing effects.
研究领域:
材料科学
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生物医学工程
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Guo Yu-Meng,Chen Zi-Chong,Zhang Kai-Xiang,Liu Liu-Lu,Huang Chan,Li Qing
Establishing a fast and simple method for determining glyphosate (Glyp) is crucial for safeguarding the environment and protecting human well-being. In this work, a copper benzenedicarboxylate (CuBDC) metal-organic frameworks (MOFs) with peroxidase-like property and stimulus-responsive fluorescent was prepared by binding Cu 2+ with terephthalic acid (TA). The presence of Glyp can coordination with Cu 2+ ion and block the peroxidase-like properties of CuBDC, thereby suppressing the catalysis the oxidation of TA into fluorescent product 2-hydroxyterephthalic acid (HTA). Based on these facts, a simple, rapid and sensitive fluorescence detection strategy for Glyp was developed. The fluorescence decreases linearly in the 0.5–10 µg/mL Glyp concentration range, and the limit of detection was calculated to be 23.99 ng/mL. Furthermore, the dual-functional CuMOFs-based label-free strategy was effectively employed for detecting Glyp in river water samples. With good performance and practicability, this strategy provides a potential application in the convenient and reliable determination of Glyp in the environment.
研究领域:
环境科学
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分析化学
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纳米生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Ruhui Hu,Suyun Zhong,Hezhen Liu,Yawen Liu,Hongxia Chen,Xiaojun Hu
A dual-ligand Cu-MOFs (Cu-F/Hs) based on phenylalanine (Phe) and histidine (His) was innovatively constructed with enhanced catalytic property. Among them, Phe can interact with the dopamine (DA) to enhance the substrate affinity. Meanwhile, the coordination of His with copper ions was inspired by the active site structure of natural laccase to improve the catalytic activity. The K m value of Cu-F/Hs was 0.14 times of laccase, indicating a high affinity for the catalytic substrate DA. Accordingly, a sensitive sensor for PD-L1 detection was designed by using Cu-F/Hs, which can catalyze DA to form redox-active polymeric conjugates deposited on the electrode surface with good electrical conductivity, thereby contributing a “signal-down” electrochemical response with a double signal enhancement. The detection limit was 0.12 ng/mL in the detection range of 0.5 – 200 ng/mL. This work provided a new and simple way to synthesize MOFs with high substrate affinity and efficient activity, and a general signal amplification strategy induced by the catalytic deposition.
研究领域:
材料科学
·
分析化学
·
生物传感器
·
催化
✓ 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）