INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Na Wang,Yibo Zhang,Zelin Meng,Mingyang Song,Heming Zhao,Yang Wang,Shuai Bai,Jianglei Hu,Fengwei Shi,Xia Yang
Addressing the low surface area and high charge recombination of graphitic carbon nitride (g-C 3 N 4 ), this study employs a synergistic carboxylation and MOF-loading strategy. Copper-based MOF (Cu-MOF) was uniformly loaded onto carboxylated spherical g-C 3 N 4 (C 3 N 4 –C) via a solvothermal method, creating a visible-light-responsive C 3 N 4 –C-MOF photocatalyst. Material characterization results indicate that the characteristic peak at 1632 cm −1 in the Fourier Transform Infrared Spectroscopy confirms the successful grafting of 4-carboxybenzoic acid (4-CBA). Carboxylation enhanced hydrophilicity and optimized surface charge, improving reactant adsorption. Photoelectrochemical tests showed significantly boosted visible light absorption, increased photocurrent density, and reduced EIS arc radius, confirming efficient interfacial charge separation. Photocatalytic hydrogen production experiments revealed that under simulated solar irradiation, the hydrogen production rate of C 3 N 4 –C-MOF2.0 reached up to 12.68 mmol g −1 h −1 , representing an approximately 1.68-fold increase compared to the unmodified C 3 N 4 -MOF. This work provides a novel approach for designing MOF/functionalized g-C 3 N 4 composites, advancing solar-driven hydrogen production.
研究领域:
材料科学
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化学工程
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纳米技术
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能量转换
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光催化
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 16
·B885
·
IF 3.662
Dan Cheng,Xuelian Xiao,Xi Li,Chen Wang,Yani Liang,Zhengsong Yu,Chenglong Jin,Nan Zhou,Ming Chen,Yulin Dong,Yawei Lin,Zhizhong Xie,Chaocan Zhang
In this work, Hemin@MOF was prepared by doping hemin into Cu-MOF-199 and applied in the electrochemical sensing of H2O2 and DNA. The Hemin@MOF modified electrode (Hemin@MOF/GCE) exhibited an excellent electrocatalytic activity toward H2O2 and the detection limit of H2O2 was as low as 0.07 μmol·L−1 with the range of 0.1 to 2200 μmol·L−1. Based on the eminent electrochemical performance, Hemin@MOF was further employed as an electrochemical signal indicator to construct a novel electrochemical DNA biosensor. Here, via amidation reaction, the stem-loop-structure probe DNA (pDNA) carrying 3'-amino and 5'-biotin was anchored on the carboxyl functionalized graphene. Then the pDNA was unfolded by the hybridization of the matched target DNA (tDNA). The following recognition between streptavidin (SA) on the Hemin@MOF-SA and biotin at the pDNA led the Hemin@MOF-SA to access the electrode surface. In this way, the electrode modified with Hemin@MOF-SA and matched tDNA could display remarkable catalytic activity toward the reaction of H2O2. The proposed electrochemical DNA biosensor showed an excellent performance with 9 orders of magnitude in the range from 1.0 × 10−15 to 1.0 × 10−6 mol·L−1, the low detection limit of 6.9 × 10−16 mol·L−1 and the one-base mismatch differentiation ability. In addition, the two as-prepared electrochemical sensors also exhibited good stability, showing a potential application in the practical analysis.
研究领域:
分析化学
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生物化学
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纳米技术
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生物医学工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jihan Lu,Xuanting He,Boyu Li,Shuang Meng,Zhuo Li
Developing multifunctional and super-wetting separation materials is of great significance for treating complex oily wastewater in real environment. Herein, the superhydrophilic Cu-HHTP@Cu foam with hierarchical structure was fabricated by chemical oxidation and in situ growth strategies, which showed an outstanding separation efficiency (>99.4 %) and flux (>92.1 kL∙m −2 ∙h −1 ) for various oil/water mixtures. The electrostatic attraction, π − π interactions and hydrogen bonding between Cu-HHTP@Cu foam and dyes facilitate the adsorption process, with a removal efficiency > 94.7 %. To absorb high-viscosity crude oil, the Cu-HHTP@Cu foam was further modified with polydimethylsiloxane (PDMS) to finally obtain superhydrophobic PDMS@Cu-HHTP@Cu foam, which demonstrates high separation efficiency (>99.8 %) and flux (>90.3 kL∙m −2 ∙h −1 ). Both Cu-HHTP@Cu foam and PDMS@Cu-HHTP@Cu foam also showed stable durability after 20-cycle tests. More importantly, due to the introduction of Cu-HHTP, PDMS@Cu-HHTP@Cu foam presented excellent photothermal conversion behavior with the surface temperature reaching up to 72.0℃ under simulated sunlight, which remarkably facilitate the cleaning of crude oil. This work shows that modified Cu foam is a promising candidate for absorbing dyes and treating crude oil spills and is expected to provide a convenient method for oil/water separation.
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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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Hong Gao,Chen Wang,Wenqi Zhang,Guowei Shan,Weixing Li
Purification of glutathione (GSH) from fermentation broth is crucial for production process. Here, we built a new nanofiltration (NF) membrane to separate glutathione from amino acids, which mainly refer to glutamate (Glu) and glycine (Gly). An alendronic acid (AA)/Cu-MOF-74 nanorods arrayed interlayer is constructed on the substrate. The designed interlayer can adsorb a significant amount of piperazine (PIP), enhancing the reaction crosslinking degree of interfacial polymerization. The Cu-MOF-74 morphology contributes a wrinkled membrane surface structure with large specific surface area. The optimal NF membrane achieved the permeability of 7.13 L·m −2 ·h −1 ·bar −1 with high selective separation factor of 20.06, 25.88, 25.46 for GSH/Glu, GSH/Gly and GSH/NaCl, respectively. This work offers a potential solution to develop high-performance NF membranes for purification of biological molecules.
研究领域:
生物技术
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材料科学
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分离工程
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DOI
高影响因子
ANALYST
·
2025
·
IF 3.3
Chenyao Lin,Qiaoping Wu,Menglu Mao,Xuedan Qiu,Chuanfan Ding,Yinghua Yan,Dumei Ma,Qingcao Li
The global rise of carbapenemase-producing Klebsiella pneumoniae (CPKP) poses a major threat to public health due to its high morbidity and mortality rates, driven largely by the production of carbapenemase enzymes. Rapid and accurate detection of carbapenemase activity is crucial for guiding appropriate antimicrobial therapy and controlling nosocomial transmission. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) enables direct detection of carbapenem hydrolysis but is currently limited by the drawbacks of conventional organic matrices, such as high background interference, toxic solvents, and poor reproducibility. In this study, we report a novel nanocomposite matrix, GNP@Zn–Cu/MOF@Au, synthesized via a green, aqueous-phase method without toxic reagents or extreme conditions. This heterostructured material exhibited a large mesoporous surface area, excellent UV absorption, and thermal responsiveness, which enhanced signal intensity, reproducibility, and analytical sensitivity, significantly improving MALDI-TOF MS performance. When applied to the identification of carbapenemase activity in clinical CPKP isolates, the matrix achieved 100% sensitivity and specificity after 1 hour of incubation and 97.3% sensitivity after just 15 minutes. Notably, KPC-2-producing strains were detected with full sensitivity within 15 minutes, while extended incubation enabled reliable identification of low-activity enzymes such as OXA-48. These findings demonstrate the strong potential of GNP@Zn–Cu/MOF@Au as a reliable and sustainable alternative to conventional matrices for rapid and accurate detection of carbapenemase activity in clinical diagnostics.
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DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 12
·1-13
·
IF 5.3
Wang Xue,Zhao Zixuan,An Long,Wang Tianxiang,Yang Xiaojing,Shan Jiajia
An unlabeled electrochemical sensing strategy based on electroactive copper-centered metal–organic framework (Cu-MOF) film coupled with multiwalled carbon nanotubes (MWCNTs) was proposed for the rapid assessment of nanoplastic concentration. The sensing interface was fabricated via the electro-deposition of Cu-MOF on the pre-modified MWCNTs using the cathodic reduction method. The exposed copper active sites in Cu-MOF showed excellent electrochemical activity, which was further enhanced due to rapid electron transfer induced by highly conductive MWCNTs. Through the adsorption functionality of Cu-MOF film towards polystyrene (PS) nanoplastics, the rapid recognition for nanoplastics in aqueous solution was achieved, thereby causing the inhibition of the current response. The results showed a robust dependence of the inhibition rate on the PS mass concentration. The proposed detection method was used for the quantitative determination of PS nanoplastics with the sizes of 100 nm, 500 nm, and 1 μm. The applicability of this electrochemical sensing platform was successfully validated in real-world water sample analysis. Graphical abstract
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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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
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IF 4.8
Yang Zhou,Xin Gu,Hongmin Gao,Hehua Zhang,Ying Liu,Dong Chang,Hongzhi Pan
The abnormally high expression of MUC1 in various malignant tumors makes it a crucial biomarker for early cancer diagnosis. This study synthesized a Cu-MOF@PtPdNPs nanocomposite exhibiting robust peroxidase-like activity via an in-situ reduction method. By integrating this nanomaterial with a dual-aptamer recognition sandwich strategy, an efficient colorimetric sensor was constructed for MUC1 detection. The nanozyme modified with aptamer2 (Cu-MOF@PtPdNPs-Apt2) was used to specifically recognize the target MUC1. Then, magnetic beads modified with aptamer1 (MB-Apt1) were used to enrich and separate the Cu-MOF@PtPdNPs-Apt2@MUC1, forming sandwich complexes. The sandwich complexes were separated and removed using magnets, and the remaining Cu-MOF@PtPdNPs-Apt2 in the supernatant was used for colorimetric detection. This sensor exhibits a linear range from 1 ng/mL to 100 μg/mL, alongside a limit of detection (LOD) of 0.211 ng/mL. Benefiting from the ingenious sandwich architecture, the sensor demonstrates high selectivity toward MUC1 and shows a good response in human serum, with recovery rates between 92.00% and 97.82%. In conclusion, this study provides a fast and sensitive technical platform for MUC1 detection.
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DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 36
·e55918
·
IF 2.7
Juan Chai,Yaxin Hou,Yanhui Zhang,Yan Xia,Shiya Ran,Shengyan Wang,Nianfu Chen,Zhenghong Guo,Juan Li,Zhengping Fang
Inspired by the significant catalytic charring effect of metal–organic frameworks (MOFs), Cu-MOF decorated ammonium polyphosphate (APP@Cu-MOF) was prepared by coupling agents to improve the fire safety of epoxy resin (EP). After adding 9 wt% APP@Cu-MOF, the fire performance of EP is significantly improved with limiting oxide index (LOI) value of 29.4 and UL-94 V-0 rating. The peak heat release rate (PHRR), total smoke production (TSP), CO production, and CO 2 production of EP composite samples decreased by 34.6%, 54.7%, 24.6% and 30.0%, respectively. It is proposed that the synergistic effect among Cu-MOF and APP promoted the char formation of EP. The dense carbon layers formed a barrier that prevented the transfer of heat and inhibited the release of toxic gases, thus acting as a flame retardant. This work provides a new strategy to develop a high-efficient MOF-decorated flame retardant with smoke inhibition, toxicity reduction, and catalytic carbonization effect.
研究领域:
材料科学
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防火安全
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Liangfeng Luo,Yidi Wang,Siping Huo,Peng Lv,Jun Fang,Yang Yang,Bin Fei
CuS/CdS(H)/CdS(C) photocatalysts were synthesized via the hydrothermal method by employing thiourea , Cd(CH 3 COO) 2 ·3H 2 O and copper 1,4-benzenedicarboxylate MOF (CuBDC). The photocatalysts were characterized by XRD , XPS , BET, TEM and UV–vis diffuse reflectance spectra. Interestingly, hexagonal CdS (CdS(H)) and cubic CdS (CdS(C)) were formed with phase junctions in one step when CuBDC was introduced in the synthesis process, in addition, CuS nanoparticles were deposited on CdS. However, only hexagonal CdS was obtained without CuBDC. It demonstrated that CuBDC was not only the precursor of CuS but also the structural modifier for CdS. With the reduction of re-combination of photo-induced electrons and holes caused by phase junctions and the enhancement of visible-light absorptions due to the loading of CuS, all CuS/CdS(H)/CdS(C) photocatalysts had higher photocurrent densities under visible-light irradiation, and consequently the higher rates of H 2 production than pure CdS(H). Typically, the catalyst with 2.89 wt% of Cu showed a highest rate of H 2 evolution at 2042 μmol/g/h.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
Journal of Physical Chemistry C
·
2022
·
IF 4.177
Yun Ling,Ya-ru Chu,Feng Gao,Qing-yun Feng,Hui-qi Xie,Yong Shao,Qing-xiang Wang
The unique chemical and physical properties of metal–organic frameworks (MOFs) endow them with promising applications in the electrochemical sensing field. Herein, a novel label-free electrochemical sensing strategy for cardiac troponin I (cTnI) has been constructed on the basis of immunoaffinity-induced depression of the electrochemical signal of Cu-MOF-74. The electrochemical assay shows that the immunoaffinity reaction between cTnI and anti-cTnI on the electrode surface can effectively inhibit the electrochemical signal of electrode-confined Cu-MOF-74, suggesting that the Cu-MOF-74-based interface may find application in the label-free analysis of cTnI. Thus, Cu-MOF-74 acts as a bifunctional material in this strategy, namely, the immobilization matrix of probe molecules and the signal source of the sensing analysis. In addition, the reason for the electrochemical signal depression of Cu-MOF-74 induced by immunoaffinity reaction is attributed to the increase in the insulation layer and the blocking of the electrolyte diffusion from the bulk solution to the electrode surface. In this strategy, the analytical range of cTnI is from 0.01 pg mL–1 to 1.0 ng mL–1 and the detection limit is 4.5 fg mL–1. The Cu-MOF-74-based sensing interface is also reliable for cTnI analysis in real serum samples, showing that the biosensor has promising application in point-of-care testing (POCT) of myocardial injury-related diseases.
研究领域:
生物传感器
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医学诊断
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材料科学
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 26
·16688-16695
·
IF 4.036
Gengqi Xing,Cheng Wang,Ke Liu,Bin Luo,Peichen Hou,Xiaodong Wang,Hongtu Dong,Jianshu Wang,Aixue Li
Methyl jasmonate (MeJA) is an important phytohormone which can regulate plant growth and stress tolerance. It is very necessary to develop sensitive and accurate detection methods for MeJA. In this work, a probe-free electrochemical immunosensor for MeJA detection was developed based on a Cu-MOF–carboxylated graphene oxide (COOH-GO) platform. The Cu2+ in the Cu-MOFs was used to provide redox signals, which avoids the application of an external redox probe in the electrolyte solutions as conventional immunosensors. COOH-GO was used to improve the structural stability and provide more sites for binding MeJA antibodies. The linear range of the MeJA immunosensor is from 10 pM to 100 μM, which can cover the whole concentration range of MeJA in most plants. And its detection limit is very low (0.35 pM), and it can detect very low concentrations of MeJA. This immunosensor is simple, low cost, and does not need redox probe solutions for measurements. It shows remarkable potential for on-site application in precision agriculture.
研究领域:
植物科学
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分析化学
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环境科学
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农业科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Nana Li,Liangqiang Chen,Wanqiu Huang,Mengdi Hao,Huabin Tu,Hao Shen,Fan Yang,Shaoning Yu
As one of the most important industrial enzymes, α-amylase is widely used in food processing, such as starch sugar and fermentation, bringing high added value to industry of more than a trillion dollars. We developed a multi-enzyme system (Glu&Gox@Cu-MOF-74) prepared by embedding α-glucosidase (Glu) and glucose oxidase (Gox) into the biomimetic metal-organic framework Cu-MOF-74 using in situ encapsulation within 15 min at room temperature for efficient and sensitive detection of α-amylase activity. Benefitting from the remarkable peroxidase-mimicking property and rigid skeleton of Cu-MOF-74, the biocatalytic platform exhibited excellent cascade activity and tolerance in various extremely harsh environments compared to natural enzymes. On this basis, a cascade biocatalytic platform was constructed for the detection of α-amylase activity with wide linear range (5–100 U/L) and low limit of detection (1.45 U/L). The colorimetric cascade scheme is important for the sensitive and selective determination of α-amylase in complex fermentation samples, and the detection time is short (∼0.5 h). This work provides new ideas for the detection of α-amylase based on the cascade amplification method.
研究领域:
生物化学
·
生物技术
·
分析化学
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）