APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Li Wang,Hao-wen Zhang,Guo-liang Liu,Di-wen Jiang,Kai-long Li,Jun-yan Lou,Zhe-sheng Feng,Yan Wang
Polyethylene terephthalate/copper (PET/Cu) composite foil, which combines lightweight, flexibility, and excellent electrical conductivity, exhibits promising potential for applications in flexible electronics, portable devices, and lithium-ion battery current collectors. However, achieving efficient and stable metallization of the PET substrate with robust interfacial bonding remains a significant challenge. In this study, an ultra-thin PET/Cu composite foil with excellent adhesion and conductivity was prepared through interfacial engineering. The fabrication process involves oxygen plasma etching, functional silane grafting, and electroplating. The prepared PET/Cu composite foil features a copper layer thickness of approximately 1 μm and presents the adhesion strength meeting the ASTM D3359 5B standard. Meanwhile, the foil achieves a minimum resistivity of 2.137 × 10 −8 Ω m. Compared to the pure copper foil, the PET/Cu composite foil exhibits a 44.89 % reduction in areal mass while maintaining exceptional electrochemical performance, revealing substantial prospects as the next-generation anode current collector for lithium-ion batteries.
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Chemical Science
·
2025
·
IF 7.4
Guozhou Feng,Yuxin Fan,Lechen Diao,Zhichao Miao,Jin Zhou
Electrocatalytic hydrogenation (ECH) of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) is regarded as a green synthesis strategy for generating high quality bio-based chemicals. However, simultaneously regulating both the hydrogen (H) coverage and the adsorption behavior of HMF presents a significant challenge, particularly in unraveling the intricate structure–activity relationship and achieving a selective target product. Here, we enhance the availability of hydrogen (H*) and modulate surface electronic interactions with 5-hydroxymethylfurfural (HMF) to facilitate selective electrochemical hydrogenation (ECH) of HMF by introducing palladium as an auxiliary component. Pd–Cu dual sites synergistically enhanced H* supply and HMF activation while suppressing the competing hydrogen evolution reaction. The optimized electrocatalyst exhibits notable catalytic performance, attaining a selectivity of 99.3% and a faradaic efficiency of 97.5% for BHMF at a potential of −1.15 V (vs. Ag/AgCl). Density functional theory (DFT) calculations demonstrate that Pd doping is crucial for enhancing the adsorption of H* and HMF* intermediates, thereby promoting the hydrogenation of HMF through the Langmuir–Hinshelwood (L–H) mechanism under neutral conditions. This work establishes a catalyst design paradigm where atomic-level dopant engineering regulates multistep protonation kinetics, offering fundamental insights into biomass electrorefining.
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Rongrong Dai,Bingyan Zhou,Jingwen Zeng,Pengle Qian,Yadong Sun,Yingtang Zhou,Zheng Guo
A dual-phase copper-doped iron oxide nanozyme (Cu-α/γFO) was synthesized via a facile hydrothermal method for efficient organic pollutant degradation. The as-prepared Cu-α/γFO exhibits excellent peroxidase-like activity, degrading 99.5% rhodamine B (RhB) under optimal conditions (pH 4, 40°C) while retaining 40.73% of its initial activity after three cycles. Critically, it demonstrates broad-spectrum catalytic efficacy, efficiently degrading diverse organic dyes (e.g., cresol red, methyl violet, methylene blue), and retains high catalytic activity even in complex environments containing coexisting cations (K⁺, Ca²⁺, Mg²⁺), anions (H₂PO₄⁻, HCO₃⁻, NO₃⁻), or organic solvents (acetone, ethyl acetate). X-ray diffraction (XRD) and Raman spectroscopy confirmed the Cu-doping-induced α/γ-Fe₂O₃ phase crystal structure, while minimal copper leaching after 21-day aqueous storage validated structural integrity. The mechanism of enhanced peroxidase-like activity of Cu-α/γFO was proposed based on integrated characterization, including electron spin resonance (ESR), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), and density of states calculations. Degradation pathways were elucidated using high-performance liquid chromatography-mass spectrometry (HPLC-MS) identification of intermediates and theoretical calculations. This work presents a dual-phase engineering strategy through targeted metal doping, advancing high-performance nanozymes for sustainable environmental remediation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xiaohui Lu,Yulin Lei,Jingxingyu Wu,Yanyu Huang,Qingqing Hao,Guochun Lv,Xiaojing Wang,Shihuai Deng,Jiali Peng,Bo Lai
The thermally activated persulfate (PDS/thermal) system has been widely explored for removing refractory organic pollutants, yet its efficiency remains constrained by energy demand and limited radical generation. In this study, Cu(II) was introduced as a homogeneous catalyst to enhance carbamazepine (CBZ) degradation in the PDS/thermal process. Under optimal conditions (40 μM Cu(II), 1 mM PDS, 60 °C), complete CBZ removal was achieved within 20 min, with the pseudo-first-order rate increased by 62 % compared to the PDS/thermal system without Cu(II). Probe experiments and density functional theory (DFT) calculations verified that SO 4 •− , • OH, and high-valent Cu(III) jointly contributed CBZ degradation, with SO 4 •− remaining the predominant reactive species. Arrhenius analysis revealed a reduction in apparent activation energy by 22.11 kJ·mol −1 , further supporting the the catalytic role of Cu(II) in facilitating O O bond cleavage and radical production. UPLC-QTOF-MS/MS identified hydroxylation, epoxidation, and deacetylation as major transformation pathways, yielding products with generally lower or comparable toxicity relative than CBZ. Moreover, the Cu(II)-PDS/thermal system demonstrated strong adaptability to pH variations, background ions, natural organic matter, and diverse organic pollutants, and maintained high efficiency in real water samples. These findings highlight the synergistic role of Cu(II) in thermal persulfate activation and provide mechanistic and practical insights for its application in the remediation of pharmaceutical-contaminated waters.
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Nanomaterials
·
2025
·Vol. 15
·期 23
·1777
·
IF 4.3
Haihong Zhao,Lei Li,Jiaxin Li,Feiqi Yan,Wenhao Wang,Mingxia Zhao
In this work, a novel mixed-component bimetallic metal–organic framework (MOF) composite material was synthesized via a solvothermal approach, and its structural and textural properties were systematically characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), N2adsorption/desorption analysis, and transmission electron microscopy (TEM). Furthermore, the single-component adsorption isotherms of CO2and N2were experimentally measured and fitted to the Langmuir–Freundlich model. The CO2/N2selectivity of the composite was evaluated based on the ideal adsorption solution theory (IAST). The results demonstrated that the addition of Zn2+significantly enhanced the specific surface area and improved the CO2adsorption capacity (3.97 mmol/g at 35 °C and 1 bar), with an increase of 31.5% in comparison with the Cu-BTC/MCFs (3.02 mmol/g). Meanwhile, the Zn-Cu-BTC/MCFs had good recyclability and CO2/N2selectivity up to 12.5 determined via IAST (CO2:N2= 85:15).
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PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2024
·
IF 4
Yong-Xiang Wu,Xun Zhou,Benwang Zhou,Chao Li,Peng Cui,Manhuan Cheng,Yang Wang,Xinsong She
Presently, Cu(OH) 2 nanowire arrays@Cu Foam (Cu(OH) 2 –NWA@Cu Foam) nanostructure has been confirmed to possess an excellent capacity of nonenzymatical electroanalysis of histamine (His). Based on Cu(OH) 2 –NWA@Cu Foam electrode, electrochemical investigations elucidated electron transfer kinetics principles of electrooxidation of His. Substantially, it was realized that a four–electron–transferring dehydrogenation was involved in diffusion–controlled electrooxidation of His, contributing tremendously to establishing as–proposed mechanization of His electrooxidation. At optimal conditions, Cu(OH) 2 –NWA@Cu Foam electrode reflected excellent electrochemical performance such as sensitivity of 3.089 mA mM –1 cm –2 , limit of determination of 94 nM, respond time of 1.6 s and linear respond rang of 0.5–1250 μM. The outperformed electroanalytical performance can be physically explicated by the dedications from larger exposed surface area, bigger interface–hydrophilicity–deduced His diffusion coefficient and less charge transfer resistance. Moreover, the outstanding selectivity, stability and reproducibility of Cu(OH) 2 –NWA@Cu Foam electrode ensured its practical effectiveness in regulating real His levels in fermented mandarin fish. Compared with control group, the mandarin fish by inoculating Lactobacillus sakei subsp . sakei delivered less His contents, deducing that inoculation of Lactobacillus sakei subsp . sakei can effectively depress His generation during fermentation process. Eventually, the one–step as–established Cu(OH) 2 –NWA@Cu Foam nanostructure positioned itself as an upcoming possibility to pursue commercialized utilization.
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ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Yunzhe Ding,Ying Yan,Hanwen Wang,Xinkui Wang,Tao Hu,Shengyang Tao,Guangtao Li
Diffusion is one of the most critical factors which affect the performance of porous catalysts in heterogeneous reactions. Hollow spheres with a hierarchical structure could significantly improve the mass transfer in the spherical catalyst. Therefore, preparation of such kind of microspheres is an important work in the field of inorganic synthesis. Herein, we combine microfluidic technology and electroless deposition to prepare hollow Cu and CuOx microspheres with a hierarchically porous structure. These microspheres have a controllable diameter (100–500 μm) and shell thickness (10–60 μm). Numerical simulation and experimental results indicate that the hollow structure is beneficial for the diffusion and utilization of the catalyst in heterogeneous reactions. The Cu and CuOx microspheres were used to catalyze the hydrogenation and Fenton-like reactions in a flow reactor, respectively. The conversion of all reactants can reach more than 95%, and catalysts can maintain their reactivity in long reaction times. Thus, the strategy in the present research should apply in the construction of other porous catalysts with high performance.
研究领域:
无机化学
·
材料科学
·
催化化学
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高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Wei Li,Zeng Chen,Chaochao Wei,Wenping Kong,Binghua Xu,Xiyang Jia,Chunli Diao,Shengjun Li
An electrochemical method was developed for the formation of Al-Cu alloys. The electrodeposition of aluminum on Mo and Cu substrates was studied using cyclic voltammetry in molten LiCl-KCl-AlCl 3 (2 wt.%). During the cathodic scan of the cyclic voltammograms, three different Al-Cu alloys were observed before pure Al formed on the Cu substrate. The electrochemical formation processes were studied using square wave voltammetry and open circuit chronopotentiometry. The products of the different reduction processes were identified using XRD. The XRD results indicated that three different Al-Cu intermetallic compounds, Al 4 Cu 9 , AlCu, and Al 2 Cu, were obtained using electrochemical deposition in the molten salt system.
研究领域:
材料科学
·
电化学
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高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Mingshi Deng,Wei Jin,Wenjuan Yang,Lingling Tian,Xinghua Gao,Xuefeng Wang,Lingyan Feng,Metini Janyasupab,Bingpu Zhou,Yuan Zhang
Mycophenolic acid (MPA), which is a potent immunosuppressant, has been widely used to prevent organ rejection after organ transplantation. In clinical practice, it is essential to monitor the free MPA concentration. Herein, convenient and fast electrochemical microsensing technology is developed for directly detecting the MPA concentration. To implement this method, ultrathin copper-based metal–organic framework (Cu–MOF) nanosheets with a thickness of about 6.6 nm are used to detect MPA. An analysis of electrochemical behavior reveals the direct electrochemical catalytic oxidation mechanism of MPA molecules on a Cu(II) tetrakis(4-carboxyphenyl)porphyrin (Cu–TCPP)-modified electrode. Furthermore, electrochemical testing results show that the ultrathin Cu–TCPP nanosheet-based microsensor exhibits high sensitivity and specificity for MPA in the nano- to micromolar range, with a detection limit of 10 nM. X-ray absorption spectroscopy (XAS) characterization reveals that the unsaturated metal ions in ultrathin nanosheets are the active sites responsible for boosting the catalytic oxidation of MPA molecules. High-performance liquid chromatography–tandem mass spectrometry further shows the catalytic oxidation product of MPA and that the phenolic hydroxyl group in the MPA molecule is the active site where the catalytic reaction occurs. The considerable sensing performance of the Cu–TCPP nanosheet-based microsensor proves that it is possible to develop a fast and convenient method for the direct high-frequency monitoring of immunosuppressive drugs.
研究领域:
分析化学
·
生物医学工程
·
药物分析
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Linyue Zhang,Jiewen Deng,Jieli Ou,Gaofeng Zhou,Yongsheng Fu,Yiqing Liu
In this paper, it was found that boric acid (BA) could improve the degradation of rhodamine B (RhB) by Cu(II)-activated peroxymonosulfate (PMS). At pH 8.5, the addition of BA could stabilize pH and generate the highly active complexes with Cu(II), which could accelerate the reduction of Cu(II) by PMS. The formed Cu(I) could activate PMS to form sulfate radical (SO 4 – ) and/or be oxidized to Cu(III). According to the results on radical scavenging experiments, SO 4 – and Cu(III) both participated in the degradation of RhB in BA/Cu(II)/PMS system. Because the binding ability of BA with Cu(II) is pH-dependent, the promotion effect of BA in Cu(II)/PMS process occurred only under weakly alkaline conditions. The presence of HCO 3 – and natural organic matter (NOM) both had an inhibition effect on RhB degradation in BA/Cu(II)/PMS system, while Cl – could promote the removal of RhB. This study provides a new idea to enhance PMS activation by Cu(II).
研究领域:
环境科学
·
化学工程
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高影响因子
BIOTECHNOLOGY LETTERS
·
2020
·Vol. 42
·期 3
·445-451
·
IF 1.977
Zhang Lei,Xu Danyu,Kong Deyong,Ji Min,Shan Lianbin,Zhao Yongjiao
Objectives To investigate the effect of zero-valent iron and copper (Fe/Cu) micro-electrolysis on dark fermentative hydrogen production from glucose by a mixed bacterial consortium and the possible mechanisms of increasing hydrogen yield. Results Compared to zero-valent iron and activated carbon (Fe/C) micro-electrolysis, Fe/Cu micro-electrolysis could increase hydrogen yield by 32.2%, hydrogen production potential by 27.1%, and the maximum hydrogen production rate by 62.0%. Meanwhile, the number of ferrous ions released into the liquid phase with Fe/Cu micro-electrolysis was about 27.0% greater than that released by Fe/C micro-electrolysis, because the dispersion of copper on the surface of iron could markedly improve electrochemical corrosion activity. Metabolic analysis revealed that Fe/C micro-electrolysis promoted acetate formation, which may have been responsible for the observed improvement in fermentative hydrogen production. Further investigation indicated that Fe/Cu micro-electrolysis increased the activity of hydrogenases and stimulated the expression of the [FeFe]-hydrogenase gene. Conclusion Fe/Cu micro-electrolysis is better than Fe/C micro-electrolysis or Fe corrosion alone for dark fermentative hydrogen production.
研究领域:
环境工程
·
微生物学
·
生物技术
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PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2016
·
IF 2.628
Li Liu,Na Tian,Long Huang,Yu-Hao Hong,Ai-Yun Xie,Feng-Yang Zhang,Chi Xiao,Zhi-You Zhou,Shi-Gang Sun
The modification of oxide-derived Cu electrode with Ni, Zn, and Au was examined to improve the catalytic activity of CO 2 electroreduction. The experimental results showed that Ni modification increased the Faraday efficiency of the formation of formic acid and n -propanol. The Faraday efficiency relating to the formation of the liquid products was as high as 34.3% at −1.5 V versus the saturated calomel electrode reference potential. In contrast, modification with Zn reduced the formic acid formation efficiency but enhanced the alcohol formation efficiency. Finally, modification with Au suppressed the selectivity toward the formation of both formic acid and alcohols.
研究领域:
化学
·
材料科学
·
催化反应
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高影响因子
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