APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Bo Xue,Le Du,Junsu Jin,Hong Meng,Jianguo Mi
The development of a green, efficient, and reusable photocatalyst is of great importance for degradation of organic pollutants in water. Herein, MIL-88A@PA, a composite consisting of macroporous polyacrylate (PA) and metal organic frameworks (MOFs), was prepared by suspension polymerization, amine functionalization, and in-situ growth of MOFs. The nanosized MIL-88A of only 50–100 nm in diameter was reduced by approximately 90% owing to the control of heterogeneous nucleation and growth. More catalytic active sites were exposed and the photocatalytic activity of MIL-88A was significantly improved. The specific surface area of MIL-88A was increased from 132.79 to 219.78 m 2 /g owing to the decreased crystal size, and the corresponding degradation rate constant of Rhodamine B (RhB) was 9.4 times than that of pure MIL-88A. Under visible light irradiation, RhB could be completely degraded in 60 min using MIL-88A@PA with a loading amount of 45%. The degradation rate was still 97% after 5 cycles. The high photocatalytic activity of MIL-88A@PA can be attributed to the effective separation of photogenerated carriers, lower transfer resistance, and more active sites. The composite MIL-88A@PA material exhibits high stability and photocatalytic activity, which offers the potential in environmental cleaning.
研究领域:
环境科学
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材料科学
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化学工程
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光化学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Jiabao Gu,Qianwen Li,Xuanyu Long,Xiaohan Zhou,Nan Liu,Zequan Li
In this study, we synthesized the MBSr (MIL-88A(Fe)/BiOBr/SrFe 12 O 19 ) dual Z-scheme heterojunction via an accessible hydrothermal method and investigated the photocatalytic performance of MBSr composites for Rhodamine B (RhB) and Methylene blue (MB). The MBSr-1% photocatalyst exhibited excellent photocatalytic performance, resulting the degradation rate of RhB reached approximately 96.2% within 60 min, which was higher than that of M88 (34%), BiOBr (89%) and M88/BiOBr-7% (93.7%) composites. And the MBSr-1% could eliminate 90.1% of MB within 90 min, which displayed the best photodegradation efficiency of prepared photocatalysts. The enhanced photocatalytic performance can be ascribed to the formation of dual Z-scheme heterojunction, which enhanced visible-light absorption and facilitated the transfer of photoinduced carriers. The MBSr-1% was proved to have excellent stability and reusability after six-recycling run. Furthermore, the major reactive species were h + , •O 2 − and •OH by radical trapping experiments. Finally, a possible photocatalytic pathway and mechanism of MBSr photocatalysts was proposed.
研究领域:
材料科学
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环境科学
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化学
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纳米技术
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光催化
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
·
IF 14.229
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai
Herein, a graphene oxide/MIL-88A(Fe) (GO/M88A) membrane was prepared for the first time by a facile vacuum filtration method. The intercalation of photo-Fenton catalytic M88A into GO nanosheets can not only regulate 2D nanochannels, but also endow the membrane with photo-Fenton catalytic activity. Accordingly, the GO/M88A membrane showed an enhanced separation efficiency and flux (more than 6 times that of GO membrane) based on synergistic separation/photo-Fenton processes. Importantly, the GO/M88A membrane maintained high separation efficiency (97.87 %) and almost constant flux even after 12 cycles of MB separation. The GO/M88A membrane can also be used to treat real textile wastewaters. Moreover, the membrane was directly used as catalyst for photo-Fenton catalytic degradation of contaminants with high degradation efficiency for MB (98.81 %) and BPA (97.27 %). Therefore, the results indicate that this novel GO/M88A membrane has excellent separation performance, stability and photo-Fenton activity and can be used as a potential membrane for water purification and environmental protection applications.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Shifeng Ji,Xuntao Li,Yunqing Xing,Tianmin Gong,Chunmei Gao
This study focused on 2-methyl-4-chlorophenoxyacetic acid (MCPA) in agricultural wastewater as the target pollutant, synthesizing MIL-88A with three distinct morphologies (rod-like, spindle-like, and diamond-like) and systematically investigating their photocatalytic degradation performance. Characterization results demonstrated that rod-shaped MIL-88A (MIL-88A-r) exhibited the highest photocatalytic activity, achieving complete degradation of 50 mg/L MCPA within 60 min under a visible light/H 2 O 2 system, attributed to its high specific surface area (11.44 m²/g) and low photogenerated charge carrier recombination rate. Adsorption experiments revealed that the adsorption of MCPA onto the catalyst surface followed pseudo-second-order kinetics and conformed to the Langmuir isotherm model. Through response surface methodology optimization of practical wastewater treatment conditions (pH 5.7, H 2 O 2 16.3 mL/L, catalyst 1.6 g/L, irradiation time 2.5 h), COD and TOC removal rates reached 69.0% and 57.8%, respectively. Furthermore, the biodegradability of the treated wastewater was significantly enhanced. This study provides new insights into the application of MOFs materials in pesticide wastewater treatment.
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高影响因子
Scientific Reports
·
2015
·Vol. 5
·期 1
·1-12
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IF 5.578
Wang Li,Zhang Yayun,Li Xia,Xie Yingzhen,He Juan,Yu Jie,Song Yonghai
Metal or metal oxides/carbon nanocomposites with hierarchical superstructures have become one of the most promising functional materials in sensor, catalysis, energy conversion, etc. In this work, novel hierarchical Fe 3 O 4 /carbon superstructures have been fabricated based on metal-organic frameworks (MOFs)-derived method. Three kinds of Fe-MOFs (MIL-88A) with different morphologies were prepared beforehand as templates and then pyrolyzed to fabricate the corresponding novel hierarchical Fe 3 O 4 /carbon superstructures. The systematic studies on the thermal decomposition process of the three kinds of MIL-88A and the effect of template morphology on the products were carried out in detail. Scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction, X-ray photoelectron spectroscopy and thermal analysis were employed to investigate the hierarchical Fe 3 O 4 /carbon superstructures. Based on these resulted hierarchical Fe 3 O 4 /carbon superstructures, a novel and sensitive nonenzymatic N-acetyl cysteine sensor was developed. The porous and hierarchical superstructures and large surface area of the as-formed Fe 3 O 4 /carbon superstructures eventually contributed to the good electrocatalytic activity of the prepared sensor towards the oxidation of N-acetyl cysteine. The proposed preparation method of the hierarchical Fe 3 O 4 /carbon superstructures is simple, efficient, cheap and easy to mass production. It might open up a new way for hierarchical superstructures preparation.
研究领域:
材料科学
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分析化学
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电化学
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产品关联
DOI
PubMed
高影响因子
FOOD RESEARCH INTERNATIONAL
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2026
·
IF 8.8
Yuhan Li,Lingmei Dai,Dehua Liu,Wei Du
Metal-organic frameworks (MOFs) with tunable porosity are promising carriers for enzyme immobilization, but their practical application is limited by structural instability and difficult recovery. We previously developed an oxidation-reduction (O-R) pyrolysis strategy for mesoporous MIL-88 A, yielding a magnetic carrier (O-R-Meso) with excellent lipase immobilization and recyclable catalysis. Herein, we verify the applicability of this O-R pathway for Fe-based MIL-88 A with tailored pore structures (micro-, meso-, macroporous) by extending it to microporous C-MIL-88 A and macroporous SOM-MIL-88 A. The O-R derivatives (O-R C, O-R-Meso and O-R-SOM) retained the original morphology and pore channel integrity, with improved specific surface area and sufficient magnetization (13–23 emu/g) for magnetic separation. Notably, after O-R pyrolysis, MIL-88 A with various pore sizes essentially maintained or even enhanced the specific activity of immobilized lipase ( Candida antarctica lipase B, CalB), successfully deriving into magnetic carriers with enhanced catalytic efficiency and recyclability. This superiority originates from the preserved pore structure and biocompatible γ-Fe 2 O 3 surface of the O-R derivatives, which effectively retain the native conformation of CalB. Besides, this work systematically compares the secondary structure of free and immobilized CalB on MOF-derived carriers with distinct pore architectures, providing direct structural evidence for the superior enzyme-carrier compatibility of mesoporous materials. In the transesterification synthesis of phosphatidyl EPA/DHA, CalB@O-R-Meso showed the highest EPA/DHA total incorporation, prominent sn -1 positional selectivity, and optimal reusability, outperforming CalB@O-R-C and CalB@O-R-SOM. Furthermore, kinetic studies on the CalB@O-R-Meso-catalyzed system confirmed a Ping-Pong Bi Bi mechanism and revealed competitive product inhibition by phosphatidyl EPA/DHA ( K i = 29.8 mM) with negligible internal mass transfer resistance (η ≈ 1). This work establishes a O-R pyrolysis strategy for tunable porosity Fe-MOFs, clarifies pore size-dependent enzyme -carrier compatibility, and provides a fundamental kinetic basis for phosphatidyl EPA/DHA synthesis.
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Li Zhang,Minjie Liang,Chao Li,Jia Jiao,Fengbo Li,Jianjiao Xin,Jing Pan,Ruyan Xie,Haijun Pang,Shaobin Li
A novel PA-MIL-88A composite was designed for detection of phytic acid. • Structural optimization through controllable etching provides a new paradigm for the functionalization of MOF materials. • MIL-88A is water-degradable, and PA is natural plant extract. This strategy follows green analytical chemistry guidelines. • The sensor exhibits low LOD and a wide linear range. • The sensor exhibits excellent practical applicability in fruit juice. Ascorbic acid (AA) may cause adverse reactions when consumed in excess, posing conceivable wellness threats to humans. Consequently, accurate detection of AA content in food is crucial for ensuring food safety and safeguarding human health. This work successfully developed an electrochemical sensor based on phytic acid-etched modified MIL-88A (PA-MIL-88A) for detecting AA in juices. The electrochemical performance of the PA-MIL-88A composite was evaluated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Experimental results indicate that the PA-MIL-88A composite exhibits excellent linearity for AA detection, with a linear range of 10 μM–2640 μM and the limit of detection as low as 2.68 μM. Furthermore, the sensor demonstrated excellent reproducibility, repeatability, and long-term stability. When detecting juice samples, it exhibited significant advantages in recovery rates and relative standard deviation (RSD) values. This work broadens the application of MIL-88A in electrochemical sensing and provides new insights for food detection. Download: Download high-res image (89KB) Download: Download full-size image
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高影响因子
CARBON
·
2025
·
IF 11.6
Qin Guo,Hankun Wang,Xianhan Shao,Yingzan Zhuang,Yuhu Zhai,Xiaohan Sun,Guobin Shao,Hao Zhang,Tingxi Li,Yong Ma
The growing demands from sectors such as advanced electronic packaging and defense have made the creation of high-performance electromagnetic wave (EMW) absorbers a research and development priority. In this study, α-Fe 2 O 3 @PPy (FOP1) and Fe 3 O 4 @PPy (FCP1) composites were synthesized via controlled thermal treatment of MIL-88A under varying conditions, followed by in-situ oxidative polymerization. This synthetic strategy allows precise tuning of the composition and microstructure of the composites, thereby facilitating systematic investigation of the synergistic electromagnetic effects on microwave absorption performance. The absorption properties of FOP1 are characterized by a minimum reflection loss (RL min ) of −21.96 dB at 6.14 mm. Furthermore, a thickness of 3.19 mm yields an effective absorption bandwidth (EAB) of 2.96 GHz. The FCP1 composite exhibits markedly superior performance, achieving an RL min of −56.03 dB at 3.64 mm and an ultra-wide EAB of 6.2 GHz at a mere 2.41 mm thickness. This performance enhancement is attributed to its enhanced magnetic loss capability and significantly improved impedance matching. A substantial radar cross-section (RCS) reduction of 33.21 dB m 2 was observed in the specular reflection direction (0°), as confirmed by simulations. This result corroborates the excellent electromagnetic wave absorption performance of the material. The remarkable microwave absorption is driven by the effective integration of multiple loss mechanisms, including interfacial polarization, conductive loss, dipole polarization, and magnetic loss. The material's performance stems from the concurrent enhancement of attenuation efficiency and impedance matching enabled by this integration. This work offers valuable insights into the design of high-performance microwave absorbers through tailored electromagnetic synergy.
研究领域:
材料科学
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电磁波吸收
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纳米复合材料
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配位聚合物（金属有机框架）
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微波工程
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产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Ting Chen,Caiyan Lai,He Zhao,Jie Yang,Kai Huang,Xu-Jia Hong,Yuepeng Cai,Renfeng Dong
Green and efficient total antioxidant capacity (TAC) detection is significant for healthy diet and disease prevention. This work first proposed the concept of TAC colorimetric detection based on microrobots. A novel metal-organic framework (MOF)-based biomimetic enzyme microrobot (MIL-88A@Fe 3 O 4 ) is developed that can efficiently and accurately detect the TAC of real fruits and vegetables. Unlike the previous colorimetric detection method to measure TAC which often requires the addition of toxic hydrogen peroxide (H 2 O 2 ) or light, the microrobots strategy can realize efficient TAC detection without any additional chemicals or stimuli. This is attributed to the oxidase-like activity from MIL-88A, which is discovered and confirmed for the first time by experiments and theoretical calculations. In addition, the microrobots can significantly accelerate the color reaction, resulting in a significant improvement in the detection efficiency of TAC in the motion state owing to their self-stirring effect. More importantly, the results of the MOF-based biomimetic enzyme microrobots strategy for detecting TAC in real fruits and vegetables are comparable to those tested by commonly used quantitative detection kits, in addition to low cost, excellent stability, and anti-interference ability. This attractive MOF-based biomimetic enzyme microrobot holds great prospects for future applications in catalytic sensing and promoting a healthy diet.
研究领域:
生物医学工程
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分析化学
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食品科学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 18
·5451-5460
·
IF 6.641
Wubin Wu,Jingchao Wang,Tianyong Zhang,Shuang Jiang,Xiaoyuan Ma,Guanghui Zhang,Xia Zhang,Xingwei Chen,Bin Li
Different fusiform-shaped MIL-88A materials were successfully prepared by adjusting the mole ratio of the central metal ion and the organic ligand and using different polar solvents. With differently shaped MIL-88A supports, several Ag/AgCl@MIL-88A (ACML) were prepared successfully using the in situ growth method. These ACML composites showed a good photocatalytic activity under the simulated sunlight and visible light. The employment of Cl− ions, anchored on the surface of MIL-88A, could improve the dispersion and stability of the loaded Ag/AgCl nanoparticles. The s-ACML composite showed excellent photocatalytic stability during the cycle tests. The in situ growth strategy provided a facile method to design and synthesize MOF composite photocatalysts for wastewater treatment. In addition, based on the related optical and electrical characterization analysis, a possible mechanism of the ACML composite photocatalytic activity was proposed.
研究领域:
材料科学
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光催化
·
环境工程
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纳米复合材料
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金属有机框架材料（MOFs）
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 10
·106518
·
IF 4.386
Qingxiao Zhang,Pei Han,Hui Zhang,Jixin Yao,Xinyu Wang,Dongmeng Chen,Xueqin Zuo,Qun Yang,Shaowei Jin,Guang Li
The oxygen evolution reaction (OER) is a critical process in the operation of electrochemical water splitting. Metal-organic frameworks (MOFs) are applied in the field of OER electrocatalysis because of their unique structure, but the high impedance and unstable framework during pyrolysis remain unresolved. Here, MIL-88A (iron-based MOF) was modified by hydrolysis and loading Co(OH)2 to improve the catalytic activity. The electrochemical results showed that the Co(OH)2/MIL-88A achieved the optimized performance with the current density of 10 mA cm−2 at 278 mV (vs RHE). Density functional calculations (DFT) combined with characterization tests suggest that electrons transfer from Co(OH)2 to MIL-88A at the interface of the heterostructure, leading to a larger hole electron pair density. D-band theory calculations demonstrated that the synergistic effect of MIL-88A and Co(OH)2 in heterostructure strengthens the adsorption between active sites and adsorbate. The above proofs are the source of the excellent OER performance of the Co(OH)2/MIL-88A. The finding has certain reference significance for the heterogeneous treatment of iron-based MOF catalysts.
研究领域:
材料科学
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电化学
·
催化科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123857
·
IF 7.5
Weitian Yang,Ning Gan,Jiahao Yu,Siyi Zhao,Hao Yi,Ting Guo,Zuoping Zhao
The efficient removal of nanoplastics from aquatic environments remained a critical environmental challenge. Herein, MIL-88A(Fe) was employed as the precursor to fabricate a series of magnetic iron oxide/carbon composites (M-T, M = MIL-88A(Fe), T = 300–800 °C) via controlled pyrolysis. Among them, the optimized M-600 preserved a spindle–like morphology, with superparamagnetic Fe 3 O 4 nanoparticles uniformly embedded in the carbon matrix. M-600 exhibited exceptional adsorption performance with excellent magnetic separability, achieving 97.46% removal efficiency for polystyrene nanoplastics (PSNPs) (pH=7, 0.3 g·L −1 , 25 °C). It worked within the pH range of 2.0–7.0. The efficiency was 63.97% after five cycles, and the maximum adsorption capacity was 69.97 mg·g −1 . The adsorption kinetics followed the pseudo-first-order model, while the adsorption isotherm was well fitted by the Sips model. Its favorable wettability facilitates interfacial contact, and the efficient capture of PSNPs was dominated by electrostatic attraction and further strengthened by π–π stacking interactions. Overall, this study provides a technically reliable and promising strategy for nanoplastic removal.
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高影响因子
危险品化学品经营许可证（带存储）