ANALYTICAL CHEMISTRY
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2019
·
IF 6.35
Xiaoyu Li,Caoling Li,Can Wu,Kangbing Wu
A highly sensitive electrochemical sensing system is developed via in situ integration of Cu-based metal–organic frameworks (Cu-BTC, BTC = 1,3,5-benzenetricarboxylic acid) and high-conductivity ball-mill-exfoliated graphene (Cu-BTC@GS) by a simple method. The as-synthesized Cu-BTC@GS hybrids display remarkably enhanced electrochemical activity due to the synergistic effect resulting from the integration. Compared to those of the pristine GS, the introduction of Cu-BTC nanoparticles leads to significant improvement in the surface area and porosity, as revealed by the nitrogen adsorption–desorption analysis. In addition, the oxidation behavior of nicotinamide adenine dinucleotide studied using the rotating ring disk electrode further reveals a superior electron-transfer rate constant (k) for the composite, indicating higher catalytic ability. Moreover, double potential step chronocoulometry of biomolecules (xanthine and hypoxanthine) and phenolic pollutants (bisphenol A and p-chlorophenol) reveals that the prepared composite possesses greatly enhanced adsorption properties, resulting in much higher response signals and detection sensitivity. Benefiting from the superior reactivity, a highly sensitive electrochemical sensing platform for wide targets is successfully fabricated. It was used in the analysis of plasma, urine, and receipt and wastewater samples, and the results were highly consistent with those obtained by high-performance liquid chromatography. We believe that this study provides an effective strategy for the construction of high-performance electrochemical sensing systems.
研究领域:
材料科学
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分析化学
·
生物医学工程
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DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2017
·
IF 2.572
Ling Li,Yana Liu,Keke Sun,Yuqi He,Li Liu
Magnetic composites Fe 3 O 4 /Cu-BTC and Fe 3 O 4 /Cu-BTC/GO were one-step synthesized and characterized. It was found that GO can help Fe 3 O 4 encapsulated more homogeneously. Fe 3 O 4 /Cu-BTC particles were “sea-island” structure, while Fe 3 O 4 /Cu-BTC/GO particles were uniform spherical structure with a bigger size. It can be explained by the excellent hydrophilicity of GO. IBU loading and IBU release of different particles were compared. Fe 3 O 4 /Cu-BTC/GO was found to have larger IBU loading and better IBU release. It was concluded that addition of GO changed the adsorption mechanic for IBU, which strengthened the IBU loading and led to the lower IBU release.
研究领域:
材料科学
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药物递送
·
化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yeshuang Wang,Mingxian Duan,Zhelin Su,Chao Yang,Yuxiao Wang,Tian Kou,Jiawei Kou,Huiling Fan
Cu–1,3,5-benzenetricarboxylate (Cu–BTC) exhibited potential for hydrogen sulfide (H 2 S) removal, however, its sulfur capacity is limited due to it relies only on the adsorption reaction path. Herein, a series of Fe-doped Cu–BTC materials (denoted as x Fe–Cu–BTC) were synthesized to enhance H 2 S removal capacity via a adsorption–oxidation bifunctional synergism mechanism. The prepared materials were characterized using various techniques, and their H 2 S removal performance was measured under dry and ambient conditions. The experimental results demonstrated that the 18%Fe–Cu–BTC shown the optimal breakthrough sulfur capacity of 122.8 mg S/g, marking a 2.1-fold and 10.3-fold improvement over pure Cu–BTC and Fe–BTC, respectively. The characterization analyses revealed that the Cu 2+ active sites initially react with H 2 S to form CuS, while the incorporated Fe 3+ sites trigger the oxidation of CuS, yielding elemental sulfur, Cu 2+ and Fe 2+ . The resultant Cu 2+ and Fe 2+ further engage in reactions with H 2 S to form CuS and FeS, thereby enhancing the H 2 S removal capacity via dual reaction pathways of adsorption and oxidation. Additionally, appropriate Fe doping increased the specific surface area and pore volume of Cu–BTC, which exposed more active sites and improved molecular diffusion. Based on the obtained findings, a plausible desulfurization mechanism involving adsorption and oxidation synergism for remove H 2 S was proposed.
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
·
2022
·
IF 4.778
Ping Yang,Xiuhong Meng,Penghu Guo,Rujin Zhou,Youhua Zhang,Shui Cao,Dan Zhang,Hongbing Ji,Linhai Duan
Two critical characteristics for gas adsorption and separation are the porosity and open metal sites of adsorbents. The Cu–BTC (BTC = benzene–1,3,5–tricarboxylate) structure was tailored using a template synthesis technique to increase the separation performance for C 3 H 6 /C 3 H 8 mixtures. The three hierarchical porous frameworks, Cu x O y @HP–Cu–BTC, synthesized using a cationic surfactant (cetyltrimethylammonium bromide (CTAB)), a neutral organic amine (N,N–dimethyltetradecylamine (N,N)), and an anionic surfactant (sodium dodecylbenzene sulfonate (SDBS)) as the template, Cu x O y @HP–Cu–BTC(SDBS) exhibited the best performance, with a C 3 H 6 adsorption capacity of 6.679 mmol g −1 , which was significantly greater than that of C 3 H 8 (5.721 mmol g −1 ). Cu x O y @HP–Cu–BTC(SDBS) has an ideal ultra–microporous structure that encloses C 3 H 6 molecules precisely while rejecting slightly bigger C 3 H 8 molecules, and C 3 H 6 interacts strongly with unsaturated metal sites through particular π–Cu bonds. According to the ideal adsorbed solution theory (IAST), the adsorption selectivity of C 3 H 6 /C 3 H 8 was 63.322, which is more than that of the reference adsorbent Cu–BTC. Additionally, the breakthrough studies shown that Cu x O y @HP–Cu–BTC(SDBS) has a good dynamic performance for the effective separation of the C 3 H 6 /C 3 H 8 mixture.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
NANO
·
2022
·
IF 1.438
Bo Tang,Ke Liu,Jiayuan Liu,Zhengwei Wang
Volatile organic compounds (VOCs) are the one kind of pollution, which lead to the severe atmospheric contamination problem. Metal organic frameworks (MOFs) and graphene are promising candidates to collect VOCs. In this study, composites which consist of graphene sheets and Cu-BTC (benzene-1,3,5 tricarboxylic acid) are prepared by the hydrothermal method to adsorb VOCs and CO. Moreover, the morphology of the resulting graphene material in the composites can be controlled by adjusting the pH value, reaction time and surfactant during the hydrothermal process, which further determines the adsorption ability for different gas molecules. According to the pore distribution features of various composites, the morphology of graphene exerts a fatal influence on the observed adsorption performances. Furthermore, the polarity of the as-prepared composites is another important determinant to selective adsorption for various VOCs. The stability of these composites under high temperature is also tested, and the results demonstrate that the adsorbents can be used in a wide temperature range. Moreover, the large BET areas and high stability of the composites in the water endow them a potential application in the sewage clarification field. After the corresponding optimization, the adsorption amounts of methanol and ethanol reach 13.6 mmol g − 1 and 9.68 mmol g − 1 , respectively.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Yonghong Huang,Caoyu Lu,Lihao Wang,Junlin Wang,Yike Yuan,Yi Ouyang,Shijie Gao,Ruihao Wang
Ammonium perchlorate (AP), as a key component of solid propellants, exhibits inherent limitations in combustion efficiency due to its high thermal decomposition temperature and slow decomposition process. To address this, this study synthesized a copper-based metal-organic framework (Cu-BTC) catalyst via a simple solvothermal method. AP/Cu-BTC composites with varying loading levels (1–5 wt%) were prepared, and their effects on AP thermal decomposition, combustion behavior, and catalytic mechanisms were systematically investigated. Results indicate that Cu-BTC significantly enhances the decomposition performance of AP, with a 1% loading demonstrating optimal effects. At a heating rate of 10K/min, the peak temperature of AP's high-temperature decomposition decreased by 119.5°C, the apparent activation energy decreased by 94.4 kJ/mol (-39.8%), and the total heat release increased by 396.1 J/g (+85.7%). Combustion tests revealed that pure AP could not be directly ignited, whereas the addition of Cu-BTC enabled successful ignition. The combustion intensity and duration varied significantly with catalyst loading. Catalytic performance exhibits non-monotonic variation with loading levels, and excessive loading leads to a decline in efficiency due to mass-transfer blockage. The remarkable enhancement in AP performance stems from the synergistic interaction between Cu-BTC's rapid mass transfer capability (derived from its ultra-high specific surface area) and the catalytic function of its Cu²⁺ active sites (facilitating proton/electron transfer). This study offers a novel perspective on precisely regulating solid propellant combustion performance through catalyst structural design and loading optimization.
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DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
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2019
·Vol. 21
·期 2
·1-12
·
IF 2.009
Xia Xiaoxiao,Li Wei,Li Song
Ionic liquids/metal-organic framework composites are recognized as promising adsorbents for CO 2 capture due to the outstanding adsorption performance, whereas their water stability, which is critical for the real application of ILs/MOF composites, has not been taken into consideration. In this work, the water stability of two ILs/Cu-BTC composites, i.e., 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]) /Cu-BTC and 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF 6 ]) /Cu-BTC, were investigated. We found that the loading of ILs does not impose remarkable impacts on the crystalline structure of Cu-BTC upon water exposure; whereas the thermal stability and surface area of Cu-BTC were decreased by the incorporation of ILs, thereby leading to the reduced CO 2 uptake in spite of the enhanced CO 2 heat of adsorption. Furthermore, it was revealed that the decomposition of Cu-BTC occurred within the first hour of water exposure. Nevertheless, the loading of ILs retarded the decomposition of Cu-BTC according to the variations in BET surface area upon water exposure.
Graphical abstract
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
SURFACE SCIENCE
·
2023
·
IF 1.9
Yatao Wang,Peng Zhang,Hongjuan Li,Qiuju Xu,Shujun Liu,Xiaopeng Liu,Xuehua Guo,Yitao Li,Jinzhang Liu,Sen Dong,Zhi Wei Seh,Qianfan Zhang
Thiophene, widely found in fossil fuels, not only corrodes equipment but also causes great harm to the environment after combustion. Adsorptive desulfurization can deeply desulfurize fuels with low sulfur content and shows great development prospect. We experimentally studied the adsorption of thiophene and benzene in Cu-BTC and two types of IZE metal-organic frameworks (MOFs). By changing the temperature and concentration conditions, we compared the separation performance of MOFs with different metal centers. We found IZE-1 to have excellent s high thiophene adsorption capacity selectivity for thiophene adsorption at low thiophene concentration and (-up to 9.3 mg S/g MOF at 70 °C), superior to that of Cu-BTC. We performed first-principles calculations and elucidated the mechanism of thiophene adsorption by analyzing the electronic structure of MOFs. The molecular dynamics simulation further explains the high selectivity of thiophene adsorption and the adsorption process. This study demonstrates the potential for MOFs to be used in thiophene adsorption, particularly at high thiophene concentrations.
研究领域:
材料科学
·
环境科学
·
化学工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 30
·8105-8114
·
IF 5.976
Ping Gao,Xiang-Ying Sun,Bin Liu,Hui-Ting Lian,Xin-Qiang Liu,Jiang-Shan Shen
Developing a catalyst with a uniform and well-defined crystal structure is very important to establish a catalytic sensing system with high efficiency. In this work, Cu-BTC metal–organic frameworks (MOFs) without a crystalline CuO or Cu2O phase were successfully synthesized by using a low temperature synthesis method, and the as-prepared Cu-BTC MOFs were found to have outstanding catalytic activity towards the traditional oxidase substrate, o-phenylenediamine (OPD), to generate a colored and fluorescent product. The results of the kinetics analysis revealed that the catalytic behavior of Cu-BTC MOFs towards OPD could well follow the typical Michaelis–Menten equation, indicative of a strong affinity between Cu-BTC MOFs and OPD. On the basis of these findings, taken together the condensation reaction between the –CHO group of formaldehyde and the –NH2 group of OPD to form Schiff base compounds, a novel Cu-BTC MOF-based catalytic sensing system for detecting gaseous formaldehyde could be successfully established.
研究领域:
催化
·
材料科学
·
分析化学
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产品关联
DOI
高影响因子
POLYMER BULLETIN
·
2026
·Vol. 83
·期 11
·593
·
IF 4.2
Tang Zhong-Xiang,Wu Bin,Shi Ying-Jia,Jin Meng,Yu Tian,Ren Hui,Ma Ning,Zhan Xue-Qing,Tsai Fang-Chang
Efficient wound management remains a critical challenge in clinical medicine and public health. Hydrogel-based wound dressings have garnered significant attention due to exceptional moisture retention and inherent cooling analgesia effects. This study develops an electrically triggered PVA/Cu-BTC@Aloe composite hydrogel for advanced wound healing. By incorporating Cu-BTC@Aloe nanocomposites (synthesized via Aloe adsorption onto Cu-BTC followed by freeze-thaw crosslinking with polyvinyl alcohol), the material achieves enhanced mechanical properties (tensile strength: 438.9 ± 42.7 kPa, + 47% vs. pure PVA) and dual functional capabilities. Under 3 V electrical stimulation, the cumulative release of Aloe at 3 h increased from 47% to 62%. Meanwhile, the hydrogel achieved antibacterial efficiencies of 97.8 ± 2.2% against Staphylococcus aureus and 99.9 ± 0.1% against Escherichia coli, while maintaining favorable cytocompatibility and promoting directional cell migration toward the anode of fibroblasts. The integration of electroresponsive materials, natural bioactive constituents, and electrical stimulation provides a promising multifunctional platform for electrically assisted wound management.
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2019
·
IF 5.383
Yu Cao,Luona Wang,Chengyin Wang,Xiaoya Hu,Yunling Liu,Guoxiu Wang
A photoelectrochemical (PEC) sensor based on hierarchically porous Cu-BTC/g-C 3 N 4 nanosheet (Cu-BTC/CN-NS, BTC = benzene-1,3,5-tricarboxylic acid) material was constructed for the first time. As a composite material, the hierarchically porous Cu-BTC can help to efficiently capture suitable pesticide molecules and accelerate signal transmission, while CN-NS possesses good optical performance. Under the irradiation of visible light, the Cu metal center can coordinate with the added glyphosate to form Cu-glyphosate complexes, leading to the increased steric hindrance of electron transfer and consequently resulted in an obvious decrease in photocurrent . Through this strategy, the constructed sensor can realize the detection of glyphosate from non-electroactive to electroactive. The results indicate that this photoelectrochemical sensor has a low detection limit of 1.3 × 10 −13 mol L −1 and a wide detection range (1.0 × 10 −12 –1.0 × 10 −8 mol L −1 and 1.0 × 10 −8 ∼ 1.0 × 10 −3 mol L −1 ). Furthermore, this Cu-BTC/CN-NS based sensor has the characteristics of short detection time and easy operation. It has great potential applications in photoelectrochemical analysis.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhihan Hu,Tong Wang,Huimeng Feng,Zhipeng Zhao,Xiao Sun,Shougang Chen
Core-shell Cu-BTC@ZIF-8 enhanced hydrophobicity without sacrificing ethylene adsorption. • ZIF-8 shell provided water blocking while enabling ethylene transport. • HMDS/PDMS integration improved water resistance, filler dispersion and membrane processability. • Active packaging membrane with ethylene-scavenging, antibacterial activity, and improved water stability. Ethylene accelerates postharvest ripening and quality loss of fruits and vegetables even at ppm levels. Copper-based MOFs, such as Cu-BTC, can capture olefins via open metal sites (OMS) through π-complexation, yet water sensitivity and powder form limit their use in humid, air-based transport. Here, we report an ethylene-scavenging composite membrane developed through a processable material-design strategy involving structural protection, surface engineering, and membrane integration. A ZIF-8 shell is grown in situ on Cu-BTC to form a microporous protective interface that suppresses water ingress and mitigates water-induced OMS deactivation, while its known aperture flexibility associated with 2-methylimidazolate linker motion is incorporated into the design to maintain ethylene transport through the shell under humid air. In air at 25 ± 2 °C and 50 ± 5% RH, Cu-BTC@ZIF-8 exhibited an ethylene uptake of 35.97 cm 3 (STP) g −1 over 72 h, exceeding pristine Cu-BTC. An ultrathin HMDS-derived siloxane layer was subsequently introduced, and the particles were embedded in PDMS to further improve water resistance and convert the powder adsorbent into a processable membrane form with improved engineering applicability. In an 80 L sealed chamber under real air, the Cu-BTC@ZIF-8 + HMDS|PDMS membrane showed an ethylene removal capacity of 34.71 cm 3 (STP) g −1 over 72 h based on MOF mass and retained approximately 80% of its initial performance after ten 72 h cycles. In a 10-day banana storage experiment at 25 ± 2 °C, the composite membrane delayed visible browning by 3–4 days compared with blank and pure PDMS controls and showed inhibitory activity against E. coli and S. aureus . This work proposes a feasible material-oriented strategy to enhance the water resistance and processability of Cu-BTC-based MOF materials, while avoiding compromising ethylene adsorption performance under real-air conditions.
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DOI
高影响因子
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