JOURNAL OF SOLID STATE CHEMISTRY
·
2021
·
IF 3.498
Tian Zhao,Hexin Zhu,Wei Geng,Minmin Zou,Ming Dong,Jie Ying
Propionic acid could efficiently affect the formation of Cr-benzenedicarboxylate metal-organic frameworks (MOFs), giving rise to yielding products with various structures. Generally, nano-sized crystals of MIL-101(Cr) can be prepared with comparatively lower concentration of propionic acid (0.6 M), which possessed high porosity (S BET = 2720 m 2 /g). The hierarchically porous (HP) MIL-101(Cr) was obtained with medium concentration of propionic acid (1.2 M), and micro-rod like crystals of MIL-88B(Cr) was formed in high concentration of propionic acid (1.8 M). Compare to bulk MIL-101(Cr) and nano-sized MIL-101(Cr), HP-MIL-101(Cr) showed much higher uptake of methylene blue (119.1 mg/L) in aqueous. This approach can offer a facile and effective pathway to synthesize stable hierarchically porous Cr-benzenedicarboxylate MOF for the applications in pollutant treatment fields.
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
Journal of Water Process Engineering
·
2024
·
IF 6.3
Rutong Song,Weihua Han,Zhiping Yang,Zhongbin Ye,Yizhou Yang,Hu Zheng,Simiao Zhao,Guangyong Zeng
Membrane fouling is one of the major challenges limiting the application of mixed matrix membranes (MMMs) in various separation processes. To address this issue, we incorporated the photocatalyst NH 2 -MIL-88B(Fe) (NM88B) into a polyvinylidene fluoride (PVDF) matrix, creating a novel photocatalytic MMMs that can effectively degrade organic pollutants under light irradiation. This innovative approach endows the membrane with both enhanced permeability and separation selectivity, which is attributed to the hydrophilic groups of the photocatalyst, as well as significant photo-Fenton catalytic capability. The NM88B/PVDF membrane exhibits high permeability (546.4 L·m −2 ·h −1 ·bar −1 ) and excellent catalytic degradation of dyes (over 99 %) and antibiotics (over 90 %) due to the synergistic effects of membrane separation and the photo-Fenton process. After ten cycles of self-cleaning tests, the membrane maintained superior antifouling capacity and degradation performance. This study advances the development of MMMs by addressing the persistent issue of membrane fouling while enhancing pollutant removal efficiency.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Shan-Shan Liu,Zhen Han,Jin-Sen Yang,Sheng-Zheng Huang,Xi-Yan Dong,Shuang-Quan Zang
Designing high-performance proton-conducting metal–organic frameworks simultaneously having highly hydrothermal stability and a high-density proton carrier remains a great challenge. Fe-MIL-88B is a classic metal–organic framework (MOF) with a large-size one-dimensional (1D) channel lined with a high-density uncoordinated metal atom for postfunctionalization; however this MOF cannot act as a proton conductor due to the weak hydrothermal stability. Here, we prepared an ultrastable isostructure Cr-MIL-88B, which is subsequently functionalized by anchoring 3-pyridinesulfonic acid and 2-(4-pyridyl) ethanesulfonic acid on the naked Cr atoms exposed on the surface of the host-framework, producing two new MOFs, i.e. Cr-MIL-88B-pyridine sulfonic acid (abbreviated as Cr-MIL-88B-PSA) and Cr-MIL-88B-pyridine ethanesulfonic acid (abbreviated as Cr-MIL-88B-PESA). Thus, Cr atoms on the host framework were modified by functional sulfonic groups, which stick out toward the center of the channel forming ordered high-density sulfonic groups as proton donors along the open channel and achieving the highest proton conductivity of 4.50 × 10–2 S cm–1 for Cr-MIL-88B-PESA and 1.58 × 10–1 S cm–1 for Cr-MIL-88B-PSA, surpassing that of the Nafion membrane.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Shaoyan Zhang,Wen Zhang,Xinyao Zhao,Xin Li,Jian Wang,Ji Li,Yanqing Liu,Xueying Cheng,Renquan Guan,Junkai Zhang
This study reports the synthesis of MIL–88B(Fe)/Bi 3 O 4 Br, an efficient Z -scheme heterojunction photocatalyst for metronidazole (MNZ) degradation. The composite achieved a degradation efficiency of 95.2 % under visible light irradiation, outperforming the single-component catalysts (MIL–88B(Fe): 39.0 %, Bi 3 O 4 Br: 71.5 %). Photocatalytic treatment reduced biotoxicity, indicating its potential for use and environmental safety. The degradation process of MNZ was revealed by integrating LC–MS data with Fukui function analysis. Photoelectrochemical findings indicate that MIL–88B(Fe) enhanced efficiency, facilitated charge separation, and augmented the spectral response of Bi 3 O 4 Br. The Z–Scheme charge transfer and the function of the built–in electric field were validated by in situ XPS. DFT calculations revealed synergistic effects in the composite system, enhancing the adsorption and photocatalytic properties for MNZ. This study proposed a thorough degradation process that underpinned the development of effective photocatalysts.
研究领域:
环境科学
·
材料化学
·
光催化
·
废水处理
·
计算化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Lufang He,Zhuo Liu,Yuchi Zhang,Le Han,Yan Xu
Nitrite is commonly found in the natural environment and in everyday human activities. However, excessive nitrite consumption can potentially harm human health. Consequently, it is crucial to develop a reliable and sensitive method for nitrite detection. In this work, trichloroacetic acid functionalized Cl-Fe-MIL-88B metal-organic framework is obtained through nucleophilic reaction between animated Fe-MIL-88B and trichloroacetic acid, which is then annealed with melamine in an N 2 atmosphere to produce the Fe/Cl/N triply-doped bamboo-like carbon nanotubes (CNTs) wrapped with Fe 3 C nanoparticles. Owing to the effective doping of Fe/Cl/N elements, the charge distribution and chemical activity of the bamboo-like structure are tailored, greatly improving the conductivity and facilitating electron transfer of the composite for potential electrocatalytic reaction. The Fe 3 C nanoparticles wrapped inside the CNTs contribute to expose more active sites and provide effective surface area. Accordingly, the Fe/Cl/N doped bamboo-like structure modified glassy carbon electrode shows excellent electrochemical nitrite sensing properties with a high sensitivity of 1060 µA cm −2 mM −1 , a low detection limit of 0.61 µM in a wide linear concentration range of 5–5000 μM, as well as good anti-interference and long-term stability. Also, the electrochemical sensor has a satisfactory recovery rate for detecting nitrite ions in spiked milk samples. This work proposes a simple precursor chlorination and pyrolysis strategy to obtain metal-filled bamboo-like structure with high electrical conductivity and electrocatalytic properties, endowing great potential in food safety and environment monitoring.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
·
2026
·Vol. 96
·期 9
·283
·
IF 1
Qing Yan,Chai Chunxiao,Li Kuan,Jiang Ye,Li Jingjing
MOF-based nanozymes are promising for colorimetric biosensing but are often limited by rigid coordination environments and poor active-site accessibility. Here, a 2-methylimidazole-regulated MIL-88B(Fe) nanozyme (2-MIM@MIL-88B) was prepared via an in situ coordination-competition strategy. Compared with pristine MIL-88B(Fe), 2-MIM@MIL-88B retained a spindle-like morphology but showed reduced crystallinity, nitrogen-containing species, pore-texture reorganization, and local Fe-site electronic modulation with increased defect-related centers. These changes correlated with enhanced peroxidase-like activity in the TMB-H 2 O 2 system, despite a reduced BET surface area. In a glucose oxidase-coupled colorimetric assay, 2-MIM@MIL-88B enabled glucose detection over 0.015–0.5 mM with a detection limit of 1.7 µM.
✓ 已验证
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Nannan Geng,Wei Chen,Hang Xu,Mingmei Ding,Zongli Xie,Anqi Wang
Because of the unique advantages, ultrasound (US) has become a popular technology for water organic treatment. In order to compensate for the disadvantages of expensive equipment and large energy input caused by US, researchers combine US with iron-based sono-catalyst to realize the rapid and efficient degradation of pollutants. Aiming at the ultrasonic hot spot and sonoluminescence effect, in this work, Z-type heterojunction sono-catalyst Fe II -MIL-88B/GO/P25 (Fe II -MGP) was synthesized for TC-HCl removal. The physicochemical properties of the material were characterized by SEM, XRD , XPS and BET. The addition of GO contributed to the formation of the Z-Scheme heterojunction. At the optimal reaction conditions determined by influential factor experiments (ultrasonic power of 100 W, sono-catalyst dose of 0.3 g/L, H 2 O 2 dose of 20 mM and pH 5), in only 7 min, 83.3 % of TC-HCl was removed, and the TOC degradation efficiency reached 52.2 %. The contrast experiment demonstrated that the US/Fe II -MGP/H 2 O 2 system had the best pollutant removal performance. After three repeated experiments, the removal efficiency decreased by only 6 %. ∙OH was identified as the major radical from the quenching experiments and technical EPR. UV–vis and Mott-Schottky measurements suggested that the possible carrier transfer paths followed the Z-Scheme heterojunction model.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Food and Bioprocess Technology
·
2026
·Vol. 19
·期 6
·299
·
IF 5.6
Li Huina,Wang Guangxian,Wang Songlei,Xia Hongqiang,Lu Yuzhe,Tian Tian,Luo Yulong,Zheng Hao-Bo
This study describes the development of a biodegradable colorimetric membrane by co-pigmenting Lycium ruthenicum anthocyanins (LRA) with catechins, and loading the stabilised complex onto MIL-88B(Fe) dispersed in a chitosan/polyvinyl alcohol (PVA) matrix. Molecular docking simulations revealed favorable non-covalent interactions, primarily hydrogen bonding and π-π stacking, between the anthocyanin and the MIL-88B framework, particularly in proximity to its iron-based coordination nodes. The LRA complex exhibited the highest binding affinity and conformational stability. Density functional theory (DFT) calculations revealed interfacial electron transfer between the LRA and Fe centers, Bader charge analysis indicated electron transfer, with the Fe center losing ~ 0.927 e upon adsorption, providing a possible electronic-level explanation for the enhanced photothermal stability observed in thermogravimetric analysis (TGA) and color retention tests. The optimized film (containing LRA 3% + MIL-88B) exhibits enhanced tensile strength, increased water contact angle to 89.9°, indicating reduced surface hydrophilicity, and significant antioxidant activity, with ABTS radical scavenging rates exceeding 80%. The films exhibited rapid (< 5 min) pH responsiveness over a wide pH range (pH 2–13), demonstrating the potential to reflect the spoilage of beef, lamb, and shrimp through visible colour changes. Soil burial experiments confirmed that the film degraded by approximately 70% within 30 days. This MOF-assisted strategy significantly improved the inherent instability of anthocyanins and provides a sustainable functionalisation solution for smart food packaging systems.
✓ 已验证
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2017
·
IF 6.844
Cong Gao,Shuo Chen,Xie Quan,Hongtao Yu,Yaobin Zhang
The Fenton reaction is an efficient technology for degrading refractory organic pollutants in water. Heterogeneous Fenton-like catalysts have been demonstrated to be promising alternatives to homogeneous catalysts because of their reusability and lack of sludge production. These catalysts, however, generally show low activity for generating OH due to their limited exposed active sites and difficulty in the reduction of Fe(III) to Fe(II). Here, enhanced catalytic performance was achieved by using an iron-based metal organic framework (MIL-88B-Fe) as a heterogeneous Fenton-like catalyst over a wide pH range (4–6). The catalytic activity of MIL-88B-Fe was about 1–3 orders of magnitude higher than that of three other conventional catalysts (Fe 2 O 3 , α-FeOOH, and Fe 3 O 4 ) and two other iron-based MOFs (MIL-53-Fe and MIL-101-Fe). The superior activity of MIL-88B-Fe could originate from the abundance of active sites, the flexible structure, and facilitated reduction of Fe(III) to Fe(II). Hydroxyl radicals generated from reaction between MIL-88B-Fe and H 2 O 2 were the main reactive oxidative species for phenol degradation.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Yourong Wu,Wanqian Cai,Shiqi Zhong,Cong Lin,Mei Lin,Tengfei Lin,Min Gao,Chunlin Zhao,Xiao Wu
Conventional nanomaterials are met with the bottleneck problem of difficult recycling and reuse when applied to water treatment. Carbon aerogel with three-dimensional structure can effectively solve the problem of recycling, however, the preparation of efficient and recyclable aerogel catalyst is still an urgent technical problem. Here, an NH 2 -MIL-88B(Fe)/agarose carbon aerogel (MGA-x) was synthesized at different calcination temperatures (x = 100, 150, 200 and 300 °C) and their changes in structures and photo-electrochemical properties were investigated. As a photo-Fenton catalyst, the aerogel could efficiently activate H 2 O 2 to ultrafast degrade mitoxantrone in water. Within 2 min, the removal efficiency of mitoxantrone in the MGA-200/H 2 O 2 /Light system was 97.6%, which was 85.3 times greater than that in the agarose aerogel/H 2 O 2 /Light system. Notably, the aerogel catalyst could be directly recovered and recycled without additional treatments, and the microstructure and degradation performance were maintained even after five cycles, demonstrating excellent sustainability for applications in practical aquatic environment. The primary active radicals involved in the photocatalytic degradation process were • OH, h + and • O 2 - , which were confirmed through free radical quenching experiments and electron paramagnetic resonance analysis. Additionally, possible degradation pathways for mitoxantrone were proposed based on the results of liquid chromatography-mass spectrometry. This study presents a photocatalytic aerogel with highly efficient degradation ability along with recycling and reuse capacity, exhibiting great potential for application in the remediation of water pollution.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 23
·38685-38692
·
IF 4.3
Shan Tang,Jingcai Xu,Xinqin Lu,Weijie Chen,Hongwei Chen,Bo Hong,Xinqing Wang
Metal-organic frameworks (MOFs) have potential applications in gas sensing due to their abundant porosity and unique surface properties. In this study, Fe2O3 hexagonal spindles (Hgs) derived from MIL-88B(Fe) were successfully prepared using an oil bath method, followed by calcination treatment at an optimized temperature of
$450~^{\circ }$
C. The high-purity porous Fe2O3 Hgs showed excellent acetone gas-sensing performance in the range of 0.4–50-ppm acetone concentration. The Fe2O3 Hgs-450 obtained the high sensing response (Ra/Rg =23,
$\tau _{\text {res}} =17$
s, and
$\tau _{\text {rec}} =2059$
s), excellent selectivity, and stability over 120 days to 10-ppm acetone at an operating temperature of
$220~^{\circ }$
C. The sensing response value was still 1.88 even at 0.4-ppm acetone and the theoretical detection limit (DL) was calculated to reach 3.59-ppb acetone. These excellent acetone gas-sensing properties were attributed to the uniform porous structure, abundant adsorbed oxygen, and small grain size of Fe2O3 Hgs, making them an excellent candidate for screening diabetic patients through exhaled gas analysis.
研究领域:
材料科学
·
医学诊断
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 46
·21505-21512
·
IF 3.3
Yuhao Lu,Tao Wang,Chengshun Tang,Qijian Niu,Tianyan You
Oxytetracycline (OTC) residues in the environment seriously endanger ecosystems and human health. Hence, it is critical to develop a selective and sensitive sensor for trace OTC detection. In this work, a facile and highly selective colorimetric aptasensor was constructed for OTC detection by the surface electrostatic assembly between aptamers and Fe-MOFs. Due to the steric effects and the decrease in the electron transfer rate, the peroxidase-like activity of NH2-MIL-88B was significantly inhibited after the adsorption of aptamers. Furthermore, the selective binding between aptamers and OTC triggered the release of aptamers from the surface of NH2-MIL-88B, which led to the reactivation of peroxidase-like activity. The colorimetric aptasensor exhibited a satisfactory detection range (1.0 × 10−10 M to 3.0 × 10−7 M) and the limit of detection (LOD) was as low as 1.9 × 10−11 M. Additionally, the colorimetric aptasensor was successfully used to detect OTC in real samples. The developed colorimetric aptasensor provided an important reference value for the sensitive detection of other antibiotics in the environment.
✓ 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）