SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ya Xu,Jihong Zhou,Peng Sun,Ping Li,Dongxue Han,Xiaohong Wang,Fang Chai
Artificial mimic enzymes have attracted wide attention for their superior characteristics to natural enzymes in extensive applications of diagnosis and therapy. In this paper, a nanozyme Cu-BDC@FeMo 6 was designed and fabricated by embedding polyoxometalate (NH 4 ) 3 [FeMo 6 O 18 (OH) 6 ]·6H 2 O (FeMo 6 ) into a copper-based metal–organic framework (Cu-BDC). The integration of FeMo 6 and Cu MOF based on the synergies of oxidability of FeMo 6 and oxygen-driven reversible Cu + /Cu 2+ enhanced the peroxidase mimicking activity, which accomplished the sensitive visual monitoring of H 2 O 2 and dopamine (DA). The detection of H 2 O 2 was driven by Cu-BDC@FeMo 6 catalyzing the oxidation of TMB with colorimetric evolution to blue, and consecutive monitoring DA via the reverse process of reduction of ox-TMB was further achieved. The limit of detection (LOD) of H 2 O 2 and DA were 10 μM and 2.27 μM, with excellent stability, and outstanding selectivity. The mechanism of the catalysis was further evaluated, and the generation of O 2 · - played a crucial role in the catalysis for oxidation. The logic gate design was constructed to illustrate the process and application. This work provides a feasible reference for the reasonable design of simulated enzyme in biosensor applications.
研究领域:
生物传感
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材料科学
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仿生催化
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产品关联
DOI
高影响因子
ACS Applied Energy Materials
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2024
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IF 5.4
Zhijia Xiao,Jinlong Wang,Xinyi Ke,Zihan Lu,Zhe Zhao,Yongfeng Mei,Gaoshan Huang
The incorporation of metal–organic frameworks onto conductive substrates demonstrates considerable potential in applications related to the hydrogen evolution reaction. In this work, we present a streamlined synthesis approach involving atomic layer deposition pretreatment to facilitate the controlled growth of Cu-BDC particles on a conductive Nafion film. This methodology preserves a substantial loading of Cu-BDC with a hierarchically porous structure, accompanied by a notable surface area of 547 m2 g–1. The composite is subsequently utilized as an electrocatalyst for hydrogen generation in an alkane electrolyte. The structural advances in the composite result in a superior electrochemical hydrogen production efficiency with a low overpotential of 84 mV and a low Tafel slope of 58 mV dec–1 in 1.0 M NaOH. Notably, the composite showed good cycling performance during the 18 h test with 2000 cycles. This research introduces a design of a catalyst electrode with promising implications for the hydrogen production industry.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Dejing Meng,Linchun Nie,Wenjing Liu,Rui Yang,Haobo Yang,Junlong Li,Ranhao Zhao,Shaojie Su,Qingxiang Zhou
The inappropriate administration of lincomycin hydrochloride (LIN) will lead to severe side effects. It is critically essential to establish LIN effective detection technique. In this work, a new nanozyme Cu-BDC@Ag 2 O was synthesized by hydrothermal method, which was composed of metal organic framework (Cu-BDC, with copper ion as metal center and 2-aminoterephthalic acid as organic ligand) and Ag 2 O, exhibiting enhanced oxidase-like activity (K m = 0.70 mM, V max = 42.53 × 10 −8 M s −1 ) and laccase-like activity. This enhanced activity was attributed to the interconversion between Cu + /Cu 2+ valence states and the synergistic effect between Ag and Cu elements. The superoxide anion radical ( O 2 – ) produced during the catalytic process of Cu-BDC@Ag 2 O can swiftly oxidize 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue oxidation product (oxTMB). The methylthio group in LIN molecules reacted with Ag + in the nanozyme, forming a stable complex that inhibited the catalytic activity of Cu-BDC@Ag 2 O, causing discernible fading of the blue coloration. Based on this, a smartphone-assisted chromogenic detection system was established for LIN quantification. The linear range extended from 3.42 to 171 μM, with a detection limit of 3.14 μM. Moreover, the colorimetric sensing platform demonstrated promising results in the analysis of real samples with spiked recoveries in the range of 94.1–100.9 % and relative standard deviations lower than 8.0 %, and validated LIN content compliance with commercial ophthalmic solutions against pharmacopeial specifications. The developed colorimetric sensor demonstrated rapid response (4 min) and superior efficiency, offering a portable tool for LIN detection.
研究领域:
分析化学
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纳米技术
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生物传感器
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环境监测
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药物分析
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2020
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IF 7.864
Yang Chen,Yadan Du,Puxu Liu,Jiangfeng Yang,Libo Li,Jinping Li
NH3 is the most important gaseous alkaline pollutant, which when accumulated at high concentrations can have a serious impact on animal and human health. More importantly, NH3 emissions will react with acidic pollutant gases to form particulate matter (PM2.5) in the atmosphere, which also poses a huge threat to human activities. The use of adsorbents for NH3 removal from emission sources or air is an urgent issue. However, there are difficulties in the compatibility between high adsorption capacity and recyclability for most conventional adsorbents. In this work, a structural transformation strategy using metal–organic frameworks (MOFs) is proposed for large-scale and recyclable NH3 adsorption. A series of M(BDC) (M = Cu, Zn, Cd) materials can transform into one-dimensional M(BDC)(NH3)2 after NH3 adsorption, resulting in repeatable adsorption capacities of 17.2, 14.1, and 7.4 mmol/g, respectively. These MOFs can be completely regenerated at 250 °C for 80 min with no adsorption capacity loss. Besides, breakthrough and cycle tests indicate that Cu(BDC) and Zn(BDC) show good performance in the removal of low concentrations of NH3 from the air. Overall, combining the advantages of high adsorption capacity and recyclability due to the reversible structural transformation, Cu(BDC) and Zn(BDC) can be employed as ideal adsorbent candidates for NH3 removal.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Haitao Wang,Min Xie,Yubin Liu,Haitao Duan,Qinglin Liu,Shengwei He,Shuxiang Lyu
In this study, a composite material denoted as Cu-BDC@AC with small particle size was synthesized by incorporating Cu-BDC with activated carbon (AC). This integration resulted in an increased specific surface area and enhanced adsorptive desulfurization performance. The maximum static sulfur capacity for n-propanethiol (nP) in styrene system was 50.7 mg S/g, while the desulfurization rate for pyrolysis gasoline was approximately 50%. The Cu-BDC@AC material was characterized using scanning electron microscopy (SEM), N2 adsorption-desorption isotherms and spectroscopy (XRD, FTIR and XPS) analyses. The adsorption process follows the pseudo-second-order kinetic, and is a chemisorption process. The adsorption behavior of nP on Cu-BDC further analyzed using an internal diffusion model. A possible mechanism for the adsorption of nP on Cu-BDC@AC is proposed: the formation of ligand bonds between Cu and S as the main role of chemisorption. This work offers a promising strategy for the removal of small-molecular sulfur compounds from unsaturated oils.
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产品关联
DOI
高影响因子
Small
·
2026
·
IF 11.8
Jiamin Qiu,Yu Liu,Zhenlong Liu,Jiajun Li,Siqi Geng,Jizhen Li,Guofang Zhang,Ziwei Gao
Combustion catalysts commonly improve the burning performance of composite solid propellants by lowering the thermal decomposition temperature of ammonium perchlorate (AP) and increasing AP heat release. However, heat release over a narrow temperature range is also critical for ignition response and regulation of the burning rate. To address this gap, we propose a concentrated heat release strategy for AP catalysis. This strategy is implemented using the Cu-BDC-NH 2 @TpPa heterostructure (Cu-BDC-NH 2 = copper 2-aminoterephthalate; TpPa is formed by Tp, 1,3,5-triformylphloroglucinol, and Pa, p-phenylenediamine). The TpPa layer regulates contact between AP and Cu active sites. DSC results show that Cu-BDC-NH 2 @TpPa-0.20 centers the main AP exothermic peak at 322°C and narrows the heat release range from 60°C for Cu-BDC-NH 2 to 12°C. Electrochemical measurements reveal lower electrochemical polarization and a more sensitive interfacial current response in the redox potential region. Condensed-phase in situ FTIR and TG-DSC-FTIR-MS analyses indicate that the TpPa interface modulates the local NH 4 + /ClO 4 − vibrational environment and gaseous product evolution. DFT calculations suggest that the thermally evolved CuO/C composite interface favors the adsorption and transformation of NH 3 -related intermediates while facilitating the desorption of NO and NO 2 products. This work provides an interface regulation strategy for combustion catalysis in energetic materials.
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Soodamani Periyasamy,Jun Hou,Yang Li,Natrayasamy Viswanathan,Zijun Yang,Guoxiang You,Jun Wu,Zhaoqin Huang
This study focuses on the fabrication of an effective heterojunction composite, CoTiO 3 /Cu-BDC-NH 2 MOF (CT@CuMOF) prepared for TC and Cr(VI) removal from water through a synergistic adsorptive-photocatalytic degradation process. CT@CuMOF composite exhibited maximum removal of 21.4 mg/g for TC and 42.1 mg/g for Cr(VI) under dark equilibrium, and visible light irradiation led to 72 % TC and 80 % Cr(VI) degradation within 30 min. VB-XPS results confirmed the alignment of band edges, supporting an S-scheme charge transfer mechanism between the p-type CT and n-type CuMOF. TEM results reveled a well-formed p-n heterojunction, while EIS and photocurrent density measurements demonstrated enhanced charge carrier mobility and separation. Kinetic results followed pseudo-second order for TC and Cr(VI), with Langmuir adsorption isotherm showing maximum capacities of 25.36 mg/g for TC and 45.94 mg/g for Cr(VI). ESR and radical scavenger studies confirmed hydroxyl (•OH) and superoxide (•O 2 − ) radicals as key species in TC degradation, while superoxide played dominant roles in Cr(VI) reduction. CT@CuMOF composite exhibited favorable thermodynamic conditions (ΔG° <0), endothermic processes (ΔH° >0) and excellent reusability (80 % retention after five cycles). This research highlights the novelty of CT@CuMOF composite as a sustainable material for water purification.
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Zhen Yang,Liqin Cao,Yongmao Qian
Herein, Cu-BDC/poly( N -methylol acrylamide- co -sodium allyl sulfonate) [Cu-BDC/P(NMA- co -SAS)] macroporous foam was synthesized templating from CO 2 -in-water (C/W) high internal phase emulsions (HIPEs), and using Cu-BDC as Pickering emulsifier . The features of the macroporous monolith, such as structure and void diameter, can be adjusted by changing the emulsion composition . The resultant macroporous foams have a low bulk density (0.317 g cm −3 ), high porosity (79.60 %), suitable pore volume (3.956 cm 3 g -1 ), and pore size ranging from 5.46 μm to 36.47 μm. The maximum swelling degree of 20.7 g/g for the composite foam was obtained when a high MBAM dosage of 12.5 wt% was used. Moreover, adsorption behavior and antibacterial property of the composite foam with 5.0 wt% Cu-BDC were investigated. The results proved that the obtained foam could behave as a potential multi-functional antibacterial material.
研究领域:
材料科学
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环境科学
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生物学
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产品关联
DOI
高影响因子
POLYMER
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2018
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IF 3.483
Zhen Yang,Liqin Cao,Jing Li,Jiangli Lin,Jide Wang
Macroporous poly( N -methylol acrylamide)–high internal phase emulsion [poly(NMA)HIPE] composite monoliths were prepared by carbon dioxide-in-water (CO 2 /W) emulsions using metal-organic framework (MOF) Cu-BDC (BDC = 1,4-dicarboxybenzene) as stabilizer . The composite monoliths were characterized using XRD , SEM, EDS-mapping, FT-IR, TG, and mercury injection methods. Increasing the internal phase fraction would lead to the decrease of monolith density and the increase of void size, and it is favorable for the formation of macroporous interconnected structure with low density and porosities up to 81.6%. The mechanical properties of the Cu-BDC/poly(NMA)HIPE and Cu-BDC removal were also evaluated. The composite polyHIPEs exhibited high antibacterial activity against Escherichia coli . The presented approach facilitated the clean manufacture of open-celled MOF based scaffolds in a one-pot process with porosity of up to 82%.
研究领域:
材料科学
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化学工程
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生物医学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2025
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IF 3.5
Fang-Ting Wang,Qing-Yun Xie,Huan Jiao,Ling Xu
The accumulation of nitrate/nitrite (NO x – ) in wastewater poses a threat on ecological safety. Electrocatalytic NO x – reduction to ammonia (NO x – RR) is feasible to realize green ammonia production. This work developed a 2D copper metal-organic framework of Cu-BDC (H 2 BDC = 1,4-benzene dicarboxylic acid) as an efficient electrocatalyst for NO x – RR, exhibiting high-performance with the NH 3 yield of 71.20 μmol‧h −1 ‧cm −2 and a Faraday efficiency of 80.9 % at −0.746 V ( vs. RHE) for NO 2 − RR, and the NH 3 yield of 130.16 μmol‧h −1 ‧cm −2 and a Faraday efficiency of 67.42 % at −0.946 V ( vs. RHE) for NO 3 − RR. Isotope labelled 14 NO 3 − and 15 NO 3 − produced 14 NH 4 + and 15 NH 4 + , supporting the formation of NH 3 comes from the NO 3 − RR. In three NO x – RR cycles, all NH 3 yields and Faraday efficiencies show a slight change, demonstrating an excellent electrocatalytic stability in NO x – RR. Our work provides a new material platform for the elimination of nitrate and nitrite through electrocatalytic reduction.
研究领域:
电化学
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环境科学
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催化
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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
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Yawen Xiao,Chen Chen,Yangli Wu,Yutao Yin,Haibo Wu,Hongfeng Li,Yun Fan,Jiansheng Wu,Sheng Li,Xiao Huang,Weina Zhang,Bing Zheng,Fengwei Huo
Controlling the morphology of the metal–organic framework (MOF) for nanosheets is beneficial for understanding their crystal growth kinetics and useful for extending these MOF nanosheets to advanced applications, in particular for gas separation and device integration. However, synthesizing MOF nanosheets with uniform thickness or desirable size still remains challenging. Herein, we provide a crystal dissolution–growth strategy for fabricating dispersible porphyrin MOF nanosheets with lateral dimensions and nanometer thickness. A morphological transition (bulk crystals–nanosheets–bulk crystals) in Zn-TCPP was observed when controlling the crystal growth kinetics by adjusting the reaction parameters (temperature and acidity). These findings encouraged the synthesis of other types of nanosheets (Cu-TCPP, Zn-TCPP (Pd), and Cu-BDC nanosheets). Zn-TCPP (Pd) nanosheets were applied in field-effect transistors and exhibited photoresponse characteristics. This work demonstrates a new strategy for obtaining MOF nanosheets and casts a new light upon fabricating two-dimensional inorganic–organic hybrid materials with controlled thickness.
研究领域:
材料科学
·
化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
·
IF 5.1
Ming Yuan,Xiangwei Yuan,Yao Jin,Yingbo Shi,Zhirong Zou,Xiaoli Xiong
Gallic acid (GA) is a kind of polyhydroxyl phenolic compound, which has good antioxidant function and widely exists in plants, fruits, beverages and drugs. The quantitative detection of GA content is very important for the quality control of human health food and drugs. In this study, 2D (two-dimensional) Cu-benzenedicarboxylate (Cu-BDC) nanosheets are used as precursor to derive CuS nanoparticles embedded in porous carbon (CuS@C) with peroxidase-like activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H 2 O 2 , while the antioxidant GA can compete with TMB resulting in a concentration dependent color change in GA. Based on this competitive relationship, a colorimetric platform for GA detection is established with a linear range of 0.5–60 μM and a limit of detection of 0.19 μM under optimal conditions. The mechanism studies indicate that ·OH radicals are the primary active species. In addition, a smartphone-assisted GA quantitative detection mode is further constructed based on the RGB principle with a detection limit of 0.27 μM. The study offers a reliable method for the rapid visual detection of GA in the tea and health care products, and also provides a reference for the design of new nanozymes.
研究领域:
分析化学
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食品科学
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纳米生物学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）