JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2022
·
IF 6.76
Meng Zhang,Yu Zhang,Yucong Chen,Xiaoru Tian,Lingzhi Liu,Yizhong Wang,Ruijie Guo,Hong Yan
MIL-88(Fe) was used as an oxidant and a hard template for the synthesis of polypyrrole (PPy) on its surface, and the formation of PPy made the surface of MIL-88(Fe) rougher as well as more voids formed in the interior. The increased specific surface area allowed more benzotriazole (BTA) (17.8 wt%) loaded on PPy/MIL-88 particles. BTA/PPy/MIL-88(Fe) was employed as a novel corrosion inhibitor to enhance the corrosion resistance of epoxy coating for carbon steel. BTA/PPy/MIL-88(Fe) filler improved the corrosion resistance of EP coating without/with artificial scratch by delaying the cathodic and anodic reactions in corrosive media. Both BTA and MIL-88(Fe) played the role of corrosion inhibitors, making EP coating possess active corrosion protection and pH-sensitive performance. Besides, BTA/PPy/MIL-88(Fe) enhanced the adhesion of EP coating by filling the pores inside.
研究领域:
材料科学
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防腐蚀工程
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化学工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Wenjin Ni,Sicheng Zhang,Lingling Cheng,Tiejun Luo,Hongyun Yang,Tengfei Duan,Dejian Yan
Developing efficient photoanodes for water oxidation is highly promising due to their critical role in producing green H 2 and harnessing solar energy. Herein, a metal-organic framework (MOF)/photoanode was successfully constructed by coating TiO 2 nanorods with MIL-88(Fe) MOF for photoelectrochemical (PEC) water splitting. The results demonstrated that MIL-88(Fe) was uniformly and tightly coated on TiO 2 and functioned as a cocatalyst. The MIL-88(Fe) MOF provides a large surface area and more Fe-O active sites, contributing to high PEC activity by reducing electron/hole recombination and enhancing light response capability. Moreover, the photoanode also exhibited an improved charge conductivity. As a result, the MIL-88(Fe)/TiO 2 photoanode exhibited an excellent photocurrent density of 1.06 mA cm −2 at 1.23 V RHE , which is approximately 2.6 times higher than the pristine TiO 2 . Charge transfer kinetics analyses and electrochemical tests were carried out and revealed that the improved PEC performance was attributed to the introduction of MIL-88(Fe), which promoted charge separation-transfer. This research provided new insights into the design of efficient semiconductor/MOF composite photoanodes for PEC water oxidation.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
Analytical Methods
·
2021
·Vol. 13
·期 48
·5830-5837
·
IF 2.896
Shouhui Chen,Jingguo Yu,Zhen Chen,Zhenzhong Huang,Yonghai Song
The presence of Cd2+, Pb2+, Cu2+ and Hg2+ in drinking-water can be harmful to human health, even if their concentration is fairly low. Hence, it is significant to detect these heavy metal ions in sewage to evaluate the quality of water. Herein, amino-functionalized metal–organic frameworks (NH2-MIL-88(Fe)) embedded with graphitic carbon nitride (g-C3N4) nanosheets and acid-functionalized carbon nanotubes were prepared via a one-pot synthesis. The composite can be directly modified on the surface of glass carbon electrodes without the assistance of Nafion or other binders. The modified glass carbon electrodes can be used to simultaneously detect Cd2+, Pb2+, Cu2+ and Hg2+ in water via square wave stripping voltammetry. The doping of g-C3N4 in the composite, rich in N-containing functional groups, participates in the adsorption of metal ions on the surface of the electrodes. The porous composite provides accommodation room for metals generated by electro-reduction. The detection limit for Cd2+, Pb2+, Cu2+ and Hg2+ is 39.6 nM, 7.6 nM, 11.9 nM, and 9.6 nM, respectively. And the sensitivity for Cd2+, Pb2+, Cu2+ and Hg2+ is 0.0789 mA μM−1 cm−2, 0.4122 mA μM−1 cm−2, 0.2616 mA μM−1 cm−2, and 0.3251 mA μM−1 cm−2, respectively. This work not only enriches the functional design of Fe-MOF materials, but also develops a method for the determination of metal ions using the adsorption sites in g-C3N4.
研究领域:
环境科学
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2025
·
IF 9.1
Jingchuan Guo,Yan Gao,Xuankai Cao,Linxuan Li,Xin Yu,Shidan Chi,Haoyu Liu,Guohong Tian,Xudong Zhao
The technology of using electricity generated from renewable energy sources such as wind and solar power for water electrolysis to produce hydrogen has achieved high efficiency, high purity, and environmental friendliness. However, its further development is constrained by the high overpotential of the oxygen evolution reaction (OER) and the high cost of precious metal catalysts. The methanol oxidation reaction (MOR) as an alternative to OER can significantly reduce overall energy consumption and accelerate the hydrogen evolution reaction. This study innovatively utilizes the metal-organic framework (MOF) of NH₂-MIL-88(Fe) to introduce Ni doping, preparing a series of Fe x Ni y -MOF and their bimetallic carbon derivatives (Fe x Ni y /C) through solvothermal synthesis and high-temperature carbonization. Results show that FeNi₂/C exhibited excellent performance in OER, with a Tafel slope of 38.69 mV·dec⁻ 1 and an overpotential of 335 mV at 10 mA cm⁻ 2 , comparable to RuO₂. In MOR, the overpotential was 193 mV, reduced by approximately 140 mV compared to OER, with outstanding stability. The catalytic mechanism was analyzed using ion chromatography, revealing the key role of Ni doping in enhancing catalytic activity and stability. This study provides new strategies for improving the electrocatalytic hydrogen production efficiency of renewable energy and reducing the production cost of hydrogen energy.
研究领域:
材料科学
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能源化学
·
催化化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2017
·
IF 3.012
Shuo Duan,Yuming Huang
A novel electrochemical sensor was developed for the sensitive and selective detection of Cu 2 + , Pb 2 + and Cd 2 + , which was based on NH 2 -MIL-88(Fe)-rGO composite modified glass carbon electrode (NH 2 -MIL-88(Fe)-rGO/GCE). The NH 2 -MIL-88(Fe)-rGO composite was facilely prepared by a one-step method and characterized by SEM, XRD, Raman spectrum and electrochemical methods. The stepwise GCE modified process was investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The electrochemical behaviors of Cu 2 + , Pb 2 + and Cd 2 + ions on the NH 2 -MIL-88(Fe)-rGO/GCE were explored by differential pulse anodic stripping voltammetry (DPASV). It was found that NH 2 -MIL-88(Fe)-rGO was capable of adsorbing Cu 2 + , Pb 2 + and Cd 2 + ions from aqueous solutions and the NH 2 -MIL-88(Fe)-rGO/GCE could enhance the electrochemical responses of Cu 2 + , Pb 2 + and Cd 2 + effectively. Important operational parameters such as electrolyte pH and deposition time were investigated and optimized for the determination of trace Cu 2 + , Pb 2 + and Cd 2 + ions. Under the optimum conditions, the proposed electrochemical sensor had a linear range of 0.005––0.3 μM for Cd 2 + , 0.01–0.3 μM for Pb 2 + and 0.005–0.05 μM for Cu 2 + , respectively. The limits of detection (LODs) are 4.9 nM for Cd 2 + , 10 nM for Pb 2 + and 3.6 nM for Cu 2 + , respectively. The proposed method has been successfully applied to determine three metal ions in water samples. The developed sensor promises simple preparation, fast operation, good sensitivity and excellent reusability, showing great potential for monitoring of water quality.
研究领域:
分析化学
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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
Advanced Materials Interfaces
·
2018
·Vol. 5
·期 8
·1701548
·
IF 4.834
Lin Liu,Yang Yan,Zihe Cai,Shengxuan Lin,Xiaobin Hu
Metal–organic frameworks (MOFs) and graphene aerogels (GAs) are both considered as good candidates for high-performance supercapacitors. In this work, a growth-oriented Fe-based MOF synergized with GA composite for supercapacitor is prepared. MIL-88-Fe is in situ grown at (002) lattice plane on the surface of graphene via a one-step solvothermal method. Long periodic hexagonal structure and electrophilicity of MOF provide strong p–π interaction with graphene sheets. By utilizing the abundant interspace of GA, the existence of MOF could affect the electric double-layer characteristics of composites. The MOF/GA composites have the advantages of high capacitive volume, fast charge/discharge rate, and reliable cycling stability. The specific capacitance is as high as 353 F g −1 at the scan rate of 20 A g −1 , and the retention ratio is 74.4% after 10 000 cycles.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ChemPlusChem
·
2018
·Vol. 83
·期 12
·1127-1134
·
IF 3.205
Yixin Chen,Siyuan Xiang,Lu Wang,Mingyue Wang,Congcong Wang,Shuwei Liu,Kai Zhang,Bai Yang
Graphical Ready to load : Hollow polypyrrole nanospindles were fabricated with MIL-88(Fe) serving as both the template and oxidizing agent for the polymerization, and water acting as the etching agent. The resulting hollow nanostructures showed excellent photothermal and drug-loading capabilities and significant anticancer effects in vivo. Polypyrrole (PPy) hollow nanostructures continue to attract the interest researchers because of their good biocompatibility, high photothermal conversion efficiency, and excellent stability. The preparation of PPy hollow nanostructures by the hard templating method without complicated post-synthetic treatment and additional oxidizing agents remains a challenge. In this work, we report a facile and novel hard templating method to fabricate hollow PPy nanospindles in which MIL-88(Fe) serves as the template. Fe 3+ centers in MIL-88(Fe) could induce the polymerization of pyrrole to construct the shell, and MIL-88(Fe) would be decomposed by solvent water. This method did not require any extra oxidizing agents and post-synthetic treatment. Hollow PPy nanospindles exhibit excellent photothermal and drug loading ability, and the therapy effect of cancer was significant. This method provides a new hard templating approach for the synthesis of polymer hollow nanostructures.
研究领域:
材料科学
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癌症治疗
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纳米医学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Aihong Tang,Yujuan Cao,Manli Guo,Bixia Lin
One-step synthesis of magnetic nitrogen-doped porous carbon (MNPC). • The addition of urea promotes the graphitization degree of MNPC. • MNPC serves as an MSPE adsorbent with excellent reusability. • Good analytical performance for chloramphenicol in honey is obtained. Magnetic porous carbon (MPC) materials derived from metal-organic frameworks (MOFs) inherit the high porosity and tunable pore structure of MOFs and also endow the materials with magnetic response, demonstrating great potential for magnetic solid-phase extraction (MSPE). However, MPCs obtained directly by carbonizing MOFs suffer from issues such as easy pore collapse and a single surface chemical functionality, which necessitate modification methods to improve their performance. The nitrogen-doping strategy offers unique advantages in charge distribution, the creation of active sites, alterations in surface chemical properties, and enhanced structural stability. Therefore, a magnetic nitrogen-doped porous carbon (MNPC) derived from NH 2 -MIL-88(Fe) was developed as an MSPE adsorbent, combined with liquid chromatography, for sensitive determination of trace amounts of chloramphenicol in honey samples. The developed method exhibits a good linear relationship in the range of 0.05-50 μg·L -1 , with R 2 of 0.9999, LOD (S/N=3) of 0.005 μg·L -1 , and LOQ (S/N=10) of 0.02μg·L -1 . The spiked recovery rate ranged from 93.5% to 99.2%, and the RSD ranged from 1.3% to 10.7%. Therefore, this method has significant potential for routine monitoring of chloramphenicol residues in food safety supervision.
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DOI
PubMed
高影响因子
TALANTA
·
2023
·
IF 6.1
Qingying Wang,Lianfang Chen,Xiaoyan Cui,Jie Zhang,Yaohui Wang,Xiupei Yang
Herein, a covalent organic framework (COF) was grown on a magnetic metal-organic framework (MOF) by a solvothermal method for the efficient extraction of bisphenols (BPs). The magnetic solid-phase extraction (MSPE) of four bisphenols (bisphenol A, bisphenol B , bisphenol AF and bisphenol C) was carried out without adjusting the pH and salt concentration. When 30 mg Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa was used to adsorb for 25 min, 6 mL methanol was used to elute for 20 min, and the extract was detected by high-performance liquid chromatography (HPLC). The proposed method has a low detection limit of 0.011–0.036 ng mL −1 , a wide linear range of 0.05–100 ng mL −1 , and a correlation coefficient (R 2 ) of 0.9980–0.9998. The intra-day and inter-day precisions are 0.74–2.54% and 1.68–3.72%, respectively. Bisphenol A was determined by applying the proposed method to the determination of actual milk samples. The standard addition experiment showed that the relative recovery of the four bisphenols was 85.70–119.7%. Pseudosecond-order, first-order, Langmuir and Freundlich models were applied to explore the adsorption characteristics of Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa. In general, the established Fe 3 O 4 @NH 2 -MIL-88(Fe)@TpPa-MSPE-HPLC-UV method exhibits attractive sensitivity, simple manipulation, and excellent reusability, and it has excellent prospects for the detection of trace BPs in complex milk matrices.
研究领域:
分析化学
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环境科学
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食品科学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2024
·
IF 6.7
Xiaofang Liu,Qun Wang,Jiawei Li,Zhan Diao,Jingzhou Hou,Danqun Huo,Changjun Hou
Simultaneous detection of multiple breast cancer-associated miRNAs significantly raises the accuracy and reliability of early diagnosis. In this work, disposable carbon fiber paper serves as the biosensing interface, linking DNA probes via click chemistry to efficiently capture targets and signals efficiently. DNA probes have multiple recognition domains that trigger a cascade reaction through the helper probes and targets, resulting in two signals output. The signals are centrally encapsulated in the pore of the MIL-88(Fe)-NH2. The signal carriers are directed by signal probes to the recognition domains that correspond to the DNA probes. The biosensor is selective and stable, and it can quantify miRNA-21 and miRNA-155 simultaneously with detection limits of 0.64 and 0.54 fmol/L, respectively. Furthermore, it demonstrates satisfactory performance in tests conducted with normal human serum and cell lysate. Overall, this method makes a satisfactory exploration to realize an inexpensive and sensitive biosensor for multiple biomarkers.
研究领域:
生物技术
·
生物传感器
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癌症研究
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分子生物学
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分析化学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Lili Yuan,Yongkang Yan,Yiyue Tang,Xueer Huang,Jiajing Liao,Jianmei Zou,Jinfang Nie,Lang Zhang,Shan Liao,Yun Zhang
This study initially reports a distance-based quantitative assay of pyrophosphate ion (PPi) based on analyte-triggered decomposition of metal–organic framework (MOF) in microfluidic paper-based analytical devices (µPADs). The µPADs were created using a mini-cutter machine and a home-use hot-pressing machine for loading one type of MOF of NH 2 -MIL-88 (Fe) prepared with Fe 3+ and fluorescent ligand of 2-aminoterephthalic acid (NH 2 -BDC). Upon sample introduction, the PPi could compete with NH 2 -BDC to bind Fe 3+ , leading to disintegration of the MOF and releasing of the fluorescent ligand in paper channel. The length (distance) of the NH 2 -BDC’s flow trace, when irradiated by a money tester pen, is proportional to the PPi level. The results show that the developed method only requires a ruler to linearly quantify PPi in a concentration range of 0–1000 μM, with a limit estimated to be ∼0.25 μM. Furthermore, recovery of PPi in orange juice and human urine was between 95.72 and 108.11 %, further validating its high detection accuracy. The fabrication method for µPADs offers many attractive advantages kike simplicity, batch production capability and low cost. Moreover, to our knowledge, this may be the first report of a portable quantitative MOF-based PPi assay with distance-based readout in µPADs.
研究领域:
分析化学
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生物医学工程
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Wenjie Yang,Dong Li,Lili Chen,Shuang You,Lihua Chen
A novel fluorometric strategy for the simultaneous identification of SARS-CoV-2 and SARS-CoV was successfully established based on a hybridization-induced signal on–off-on mechanism. Here, one part of the probe (P1) of SARS-CoV-2 (P = P1/P2) is partially related to SARS-CoV, while the other part (P2) is completely irrelevant to SARS-CoV. They as smart gatekeepers were anchored on NH 2 -MIL-88(Fe) ( [email protected] /P2) to turn off its catalytic performance. Only the specific SARS-CoV-2 genetic target can strongly restore the peroxidase-like activity of [email protected] /P2. In the presence of o-phenylenediamine, SARS-CoV-2 can be efficiently detected with high sensitivity, accuracy, and reliability. This strategy demonstrated excellent analytical characteristics with a linear range (10 -9 M ∼ 10 -6 M) under the limit of detection of 0.11 nM not only in buffer but also in 10 % serum, which partly shows its practicability. Most importantly, with the help of the auxiliary test of [email protected] and [email protected] , SARS-CoV-2 and SARS-CoV can be efficiently quantified and distinguished. This novel strategy has provided a breakthrough in the development of such identification. In the whole process, only a simple one-step experiment was involved. This circumvents the trouble of pretreatment experiments in traditional methods, including complex enzymatic mixtures, specialized experimental equipment, many primers optimization as well as reverse transcriptase. Additionally, this novel strategy is rapid, low-cost, and easy-to-use tools.
研究领域:
分析化学
·
病毒学
·
分子生物学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）