LANGMUIR
·
2026
·
IF 3.9
Muhammad Yawar Younis,Muhammad Yasir Younis,Safdar Abbas,Yun Wei
Advanced phosphate removal is crucial for mitigating eutrophication. Adsorption stands out for phosphate removal, yet, a weak affinity and slow mass transfer at low concentrations often hinder it. Herein, hierarchical CuCo-LDH@SA-10 hydrogel beads prepared by ZIF-67 conversion and alginate immobilization were fabricated with freeze-drying, which yielded a nanosheet-coated mesoporous architecture accelerating transport. The adsorbent removed phosphate from 50 to 0.05 mg L–1 in real wastewater within three cycles, achieving an adsorption capacity of 140.65 mg g–1 under batch conditions. Equilibrium data followed the Langmuir isotherm, while the pseudo-second-order model provided the best description of uptake kinetics. High removal persisted over a pH range of 3–6, with good tolerance to coexisting anions (chloride being the most suppressive). Beyond phosphate, the material effectively removed chromate, achieving an uptake of 86.75 mg g–1. The beads were regenerable, retaining ≥90% capacity over three cycles and 87% after five cycles. Overall, the integration of hierarchical porosity, strong performance at low concentrations, and demonstrated dual-pollutant removal underscores CuCo-LDH@SA-10 as a promising adsorbent for advanced phosphate and chromate polishing in wastewater.
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高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Yanqing Liu,Su Yao,Gengxin Hu,Yinjian Ye,Hongwu Wang
Novel electrochemical sensors constructed using CuCo bimetallic nanoparticle-dispersed cubic mesoporous carbon (CMK-8) were applied to determine cyadox (CYA). The nanostructure of CuCo@CMK–8 was characterized by scanning electron microscopy and energy-dispersive spectroscopy. The morphological characteristics of the bimetallic nanoparticles endowed the performed electrochemical sensors with large active regions and excellent electrical conductivity, which provided active reaction sites for the target analyte and improved the detection sensitivity of CYA. The performed sensors were investigated on the CYA detection by cyclic voltammetry and differential pulse voltammetry. Under optimal conditions, the peak currents of CYA on the modified electrode were linearly correlated with the concentration of CYA in the range of 0.001–3.0 μM. The limit of detection of CYA was 0.26 nM. For the first time, the performance of electrochemical sensors for detecting CYA was explored by reaction kinetics and thermodynamics of CYA on modified electrodes. In addition, the performed sensor was successfully applied to monitor CYA in real fish feed sample. This study presented a new approach in designing a low-cost sensitive electrochemical sensor on the basis of non-noble metals.
研究领域:
分析化学
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电化学
·
纳米材料
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食品安全
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环境监测
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药物残留检测
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生物传感器
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Xin Tan,Yan Song,Jiaqi Shi,Yiming Sun,Haoting Liu,Xin Zhang,Zemiao Zhang,Yidan Xu,Jinchao Ma,Lihong Jin,BingJun Shen
MicroRNA-208a (miR-208a), a cardiac-specific miRNA encoded within the Myh6 gene intron, is critically involved in cardiac pathologies such as myocardial remodeling and arrhythmia. Its recent identification in the bloodstream has generated significant clinical interest as a non-invasive biomarker for the early diagnosis of myocardial infarction, underscoring the need for reliable pre-infarction screening methods. In this study, a novel bimetallic CuCo-based metal-organic framework/graphene oxide (CuCo-MOF/GO) composite was synthesized to fabricate an electrochemical biosensor for detecting miR-208a. Characterization revealed that the composite possesses a unique three-dimensional nanosheet layered structure with highly dispersed bimetallic active sites. This architecture not only enhances the electrode's electron transfer capability but also, through abundant surface functional groups, facilitates hydrogen bonding and π-π stacking interactions with the complementary RNA capture probe (RNAc). These intermolecular forces ensure strong affinity and stable anchorage of the RNAc onto the modified electrode surface. Coupled with the inherent electrochemical activity of the material, these features confer exceptional detection performance to the biosensor. The constructed BSA/RNAc/CuCo-MOF/GO/GCE (bovine serum albumin, BSA; glassy carbon electrode, GCE) electrode demonstrated a wide linear detection range from 1 zM to 1 pM for miR-208a, with a remarkably low limit of detection (LOD) of 1.27 zM (S/N = 3). Furthermore, the biosensor exhibited excellent selectivity, stability, acceptable reproducibility, and accurate detection in human serum samples, highlighting its strong potential for application in the early diagnosis of cardiovascular diseases.
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MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Peiheng Sun,Jing Zhang,Jiajie Huang,Liang Wang,Peijia Wang,Chen Cai,Mixue Lu,Zhujun Yao,Yefeng Yang
As an important class of battery-type materials, transition metal selenides are widely investigated for application in hybrid supercapacitors. Herein, we report the two-step synthesis of bimetallic copper cobalt selenide nanoparticles embedded in N-doped carbon layers ((CuCo)Se/NC) by using metal-organic framework (MOF) as the functional templates. Benefitting from the Cu incorporation in CoSe matrix and integration of MOF-derived carbon layers, the optimized (CuCo)Se/NC electrode delivers a reasonably high specific capacity of 121.4 C/g at 1 A/g with outstanding rate capability and cycling stability. The full hybrid supercapacitor device based on the (CuCo)Se/NC electrode shows a maximum energy density of 16.3 Wh/kg at a power density of 155.3 W/kg with excellent long-term cycling stability over 5000 cycles.
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FUEL PROCESSING TECHNOLOGY
·
2020
·
IF 4.982
Xin Gou,Francis Okejiri,Zihao Zhang,Miaomiao Liu,Jixing Liu,Hao Chen,Kequan Chen,Xiuyang Lu,Pingkai Ouyang,Jie Fu
Integration of aqueous-phase reforming of methanol (APRM) into the production of value-added fatty alcohols via hydrogenation of fatty acids is an attractive and efficient process in biomass conversion . Herein, we present tannin-derived carbon-supported monometallic Cu/C, Co/C and bimetallic Cu-Co/C catalysts with different Cu/Co ratios for in situ hydrogenation of lauric acid in a methanol-water hydrothermal system. The catalysts were made by a simple mixture of tannin and the metal salts, followed by pyrolysis in an H 2 atmosphere. Through synergism induced by Cu-Co interactions, the bimetallic Cu-Co/C catalyst with Cu/Co ratio of 1:4 (CuCo 4 /C) exhibits higher catalytic activity than monometallic Cu/C catalyst towards lauric acid conversion, as well as higher selectivity to lauryl alcohol than monometallic Co/C catalyst. The CuCo 4 /C catalyst is composed of metallic Cu, metallic Co, and amorphous carbon , characterized by high surface area (194.5 m 2 /g) and hierarchical structure. The obtained lauryl alcohol yield in the methanol-water hydrothermal system is significantly higher than other alcohol-water systems, namely ethanol, 1-propanol, and isopropanol hydrothermal systems, highlighting its higher generation rate of hydrogen. Also, the effects of process parameters including the quantity of methanol, catalyst loading and reaction time on the conversion of lauric acid were systematically studied and optimized.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2023
·Vol. 50
·期 1
·107-125
·
IF 3.3
Huo Quan,Zhang Xiaolin,Fu Yanfei,Zhao Jiayao,Fu Lei,Miao Jiarun,Sun Haihui,Gao Jing,Liu Suyan
In this work, CuCo@C and CuCoS@C derived from an in-situ synthesis bi-metallic MOF HKUST-1/ZIF-67 (CuCo-MOF) were successfully fabricated by calcination and hydrothermal sulfide strategies. Morphology characterization results indicated that ZIF-67 grew uniformly on the surface of HKUST-1 to form CuCo-MOF. And, benefiting from bi-metallic MOFs precursors, the formed derivatives inherited and possessed good textural properties and dispersing well metal sites, which facilitated diffusions of molecules and enhancements of catalytic performances. In addition, carbon matrix produced in the materials further accelerated electron transporting properties, boosting HER and OER activities. Accordingly, in electrolytic water evaluations, CuCo@C and CuCoS@C showed good HER and OER performance, achieving 97 mV and 180 mV of overpotential at 10 mA cm −2 in an alkaline medium, respectively. Additionally, the catalysts exhibit long-term stabilities. Thus, this study provides a rational way for designing and constructing of high-efficient catalysts for H 2 and O 2 generations from electrolytic water processes.
研究领域:
材料科学
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电化学
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纳米催化
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能源化学
·
功能材料
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122374
·
IF 7.5
Feng Chen,Xiang Xia,Wei Chen,Wei Liu,Xinxin Liao,Lei Xiong,Yanqiao Jin
Refining lignin and its derivatives into biofuels and fine chemicals via catalytic transfer hydrogenation (CTH) has gained significant attention for its potential in utilizing renewable resources and reducing fossil fuel dependence. Herein, a series of bimetallic Cu-Co catalysts with varying metal ratios are synthesized via a facile hydrothermal method and successfully applied in the efficient CTH of the α-O−4 model compound benzyl phenyl ether (BPE) and corncob lignin. Cu 0.5 Co 1 @CN has the best performance among catalysts with different CuCo ratios due to the formation of the CuCo 2 O 4 phase which provides more acid sites and hydrogen adsorption/desorption sites. Under the reaction conditions of 190 °C in isopropanol, the Cu 0.5 Co 1 @CN catalyst achieves the complete conversion of BPE to cyclohexanol and toluene, and demonstrates excellent CTH performance towards other α-O−4 and β-O−4 model compounds. This catalyst simultaneously enables the demethoxylation and hydrogenation of phenolic compounds like guaiacol. Furthermore, Cu 0.5 Co 1 @CN efficiently converts corncob lignin, producing a high proportion of phenolic compounds in the resulting liquid (88.26%), while preventing the aromatic hydrocarbons from being hydrogenated. Overall, this work provides a novel and effective strategy for transforming lignin into high-value products.
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CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Shuang Wei,Mengyue Li,Kexin Li,Sheng Zhong,Yatao Su,Ruirui Zhang,Ruixia Liu
The oxidation of cyclohexane to produce adipic acid suffered from the inefficient and polluting two-step process. We introduce the CuCo Prussian blue analogues derived in situ C, N doped CuCo composite catalysts in the selective oxidation of cyclohexane. Due to the in-situ doping of C and N elements in the form of active graphite carbon and pyridine nitrogen, the oxygen vacancy content and the ability to activate oxygen are improved. The one-step efficient catalytic oxidation of cyclohexane to adipic acid was realized due to the excellent electron transfer performance between C, N elements and metals.
研究领域:
化学工程
·
催化化学
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高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2024
·
IF 3.1
Wendi Mu,Chunyan Wu,Fangfang Wu,Hongmin Gao,Xinshui Ren,Jing Feng,Meng Miao,Hehua Zhang,Dong Chang,Hongzhi Pan
Cancer antigen 125 (CA125) is pivotal as a tumor marker in early ovarian cancer prevention and diagnosis. In this work, we introduced an ultrasensitive label-free electrochemical immunosensor tailored for CA125 detection, leveraging nanogold-functionalized copper-cobalt oxide nanosheets (CuCo-ONSs@AuNPs) as nanocomposites. For the inaugural application, copper-cobalt oxide nanosheets delivered the requisite DPV electrochemical response for the immunosensors. Their large specific surface area and commendable electrical conductivity amplify electron transfer and enable significant gold nanoparticle loading. Concurrently, AuNPs offer a plethora of active sites, facilitating easy immobilization of biomolecules via the bond between amino groups and AuNPs. We employed scanning electron microscopy, transmission electron microscopy, and x-ray photoelectron spectroscopy to characterize the nanomaterials' surface morphology and elemental composition. The electrochemical sensor response signals were ascertained using differential pulse voltammetry. Under optimal conditions, the immunosensor exhibited a linear detection range from 1×10 −7 U/mL to 1×10 −3 U/mL and a detection limit of 3.9×10 −8 U/mL (S/N=3). The proposed label-free electrochemical immunosensor furnishes a straightforward, dependable, and sensitive approach for CA125 quantification and stands as a promising method for clinical detection of other tumor markers.
研究领域:
医学诊断
·
生物传感
·
纳米材料科学
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Dengqi Zhou,Ke Zeng,Liqiang Wang,Feiying Tang
The development of highly efficient non-noble metal catalysts for the hydrogenation of N-heteroarenes under mild condition is of great importance for both theoretical and industrial applications, which can efficiently reduce energy consumption and environmental pollution. In this work, we found that the prepared CoCu nano-alloy catalyst after exposed in the air over 24 h (named Co 1 Cu 1 /C) exhibited a dramatically improved catalytic performance (yield from trace to >99%) for quinoline hydrogenation under mild reaction conditions (60 °C, 3 MPa H 2 ). According to the characterization, the catalyst Co 1 Cu 1 /C exhibited the strong interaction between Co and Cu. Meanwhile, it was endowed with a stable partial oxidation surface. The unsaturated oxygen coordinated surface of Co 1 Cu 1 /C presented a moderate binding for quinoline and 1, 2, 3, 4-tetrahydroquinoline, which could efficiently avoid the deactivation of catalyst and favor the hydrogenation kinetics. The density functional theory (DFT) calculations coupled with X ray-based structural analyses suggested that the unsaturated oxygen coordinated surface could lower the diffusion energy of the active hydrogen species and the reaction barrier for quinoline hydrogenation which resulted from the d - p orbital electron coupling. This work revealed that the catalytic performance of nano-alloy catalysts might not only be ascribed to the interaction between metals, while the unsaturated oxygen coordination of metallic surfaces played an important role.
研究领域:
催化化学
·
材料科学
·
理论化学
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Junhai Wang,Dongrun Tian,Tingting Yan,Wenfeng Liang,Lixiu Zhang,Xinran Li,Siyang Gao
In this study, we successfully synthesized CD@CuCo-MOF composites, which are composed of ultrathin two-dimensional (2D) nanosheets of metal-organic framework (MOF) doped with carbon dots (CDs). The synthesis process involved hydrothermal and ultrasonically assisted self-assembly with a proper solvent ratio. The composites were then dispersed into pentaerythritol ester (PETE) with the aid of ultrasonic treatment. We thoroughly evaluated the physicochemical features and tribological properties of the CD@CuCo-MOF composites using advanced testing and characterization techniques including XRD, Raman, FTIR, TG, XPS, FIB-TEM and so on. The results demonstrated that the addition of CD@CuCo-MOF resulted in a 61.1 % reduction in the coefficient of friction (COF) at a concentration of 0.1 wt% when compared to the base oil at room temperature. With the rise in temperature, CD@CuCo-MOF exhibited excellent lubricating properties due to its hybrid inorganic-organic structure and interlayer sliding effect. This led to a reduction of 59.2 % and 42.9 % in the mean COF compared to PETE oil at temperatures of 100 °C and 200 °C. This enhancement in the tribological performance of CD@CuCo-MOF could be attributed to several factors, including its superior dispersion stability, excellent lubricating properties, and involvement in the formation of a tribofilm. The tribofilm formed from a combination of CDs, CuCo-MOF, metal oxides , carbides , and nitrides promoted the rearrangement of the contact surface, thereby minimizing the friction and wear between the rubbing surfaces. These findings hold significant guiding implications for advancing the development of potential-controlled lubrication using MOFs doped with CDs across a wide temperature range.
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Tungsten
·
2025
·
IF 11.2
Wang Xue,Zhang Li,Han Yu,Li Feng-Bo,Li Shao-Bin
Accurate non-invasive glucose monitoring is crucial for health diagnostics. However, the development of high-performance non-enzymatic electrochemical sensors for this application remains a significant challenge. To address this issue, a novel material, FeOOH encapsulated within zeolitic imidazolate framework-67 (ZIF-67)-derived copper-cobalt-layered double hydroxide (FeOOH@CuCo-LDH), was developed through a vapor-assisted deprotonation process for FeOOH encapsulation, followed by a hydrothermal reaction to synthesize the hollow composite. The synergistic interactions between the multi-metallic composition and the hollow structure significantly enhance glucose oxidation-reduction reactions. This enables the sensor to achieve a wide linear detection range (0.5–722 μmol·L −1 and 722–4222 μmol·L −1 ), high sensitivity (4.05 and 1.43 μA·L·μmol −1 ·cm −2 ), and a low limit of detection (0.83 μmol·L −1 ). The sensor demonstrated excellent performance in practical applications, accurately detecting glucose in saliva under physiological conditions. This study highlights the potential of FeOOH@CuCo-LDH as an excellent electrode material for non-enzymatic electrochemical glucose sensing, offering promising applications in diabetes prevention and diagnosis. Graphical abstract
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