CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Yabo Gao,Qing Zhu,Zhong Huang,Shaowei Zhang,Yongxin Wang,Gongye lv,Hang Li,Xin Zhang,Zhaoping Hou,Haijun Zhang
Nanoporous metals are considered as the ideal catalysts owing to their open pore structure and high surface area. In the present work, a series of nanoporous Cu-based metamaterial (nano-Cu/MM) catalysts with triply periodic minimal surface (TPMS) were developed by the selective laser melting (SLM) and chemical dealloying process. The TPMS structure endowed the porous metamaterial with an excellent mechanical property and an abundant pathway for mass transfer. The as-prepared nano-Cu/MM was applied as a Fenton-like catalyst in the advanced oxidation process, and the degradation rate of methylene blue (MB) was as high as 99 % in 10 min. In addition, the catalyst showed a good applicability, which could effectively degrade the complex dyes and tetracycline drugs. To meet the practical application, a TPMS-structured coaxial circular with nanoporous structure was designed and prepared by the same process, which could be simply assembled with an electric motor to achieve a continuous catalytic degradation, demonstrating its potential for the industrial applications.
研究领域:
材料科学
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环境工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Fangyuan Diao,Xinxin Xiao,Bing Luo,Hui Sun,Fei Ding,Lijie Ci,Pengchao Si
It is important to design and fabricate nanoporous metals (NPMs) with optimized microstructures for specific applications. In this contribution, nanoporous coppers (NPCs) with controllable thicknesses and pore sizes were fabricated via the combination of a co-sputtering of Cu/Ti with a subsequent dealloying process. The effect of dealloying time on porous morphology and the corresponding surface enhanced Raman scattering (SERS) behaviors were systematically investigated. Transmission electron microscopy (TEM) identified the presences of the gaps formed between ligaments and also the nanobumps on the nanoparticle-aggregated ligament surface, which were likely to contribute as the “hot spots” for electromagnetic enhancement. The optimal NPC film exhibited excellent SERS performance towards Rhodamine 6G (R6G) with a low limiting detection (10 −9 M), along with good uniformity and reproducibility. The calculated enhancement factor of ca. 4.71 × 10 7 was over Au substrates and comparable to Ag systems, promising the proposed NPC as a cheap candidate for high-performance SERS substrate.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 10
·2461-2467
·
IF 6.569
Yingchun Zhang,Changsheng Cao,Xin-Tao Wu,Qi-Long Zhu
Bismuth (Bi)-based nanomaterials are considered as promising electrocatalysts for the electrocatalytic CO2 reduction reaction (CO2RR), but it is still challenging to achieve high current density and selectivity in a wide potential window. Herein, Cu-decorated Bi/Bi2O3 nanofoam (P–Cu–BiNF) with a 3D porous network structure was prepared for the first time via a simple fast-reduction method. Characterizations indicate that the introduction of Cu can significantly regulate the microstructure and electronic states of Bi/Bi2O3. Consequently, the as-prepared P–Cu–BiNF exhibits excellent electrocatalytic performance toward the CO2RR. Remarkably, the faradaic efficiency of formate production can exceed 90% in a wide potential range from −0.78 to −1.08 V. Meanwhile, it can also deliver a high formate partial current density of up to 62.7 mA cm−2 at −1.18 V and long-term stability. This work provides a simple but effective way to synthesize advanced Bi-based materials with significantly improved electrocatalytic CO2RR performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jianxiong Xing,Tao Chen,Zihao Wang,Zhicui Song,Chaohui Wei,Qijiu Deng,Qiang Zhao,Aijun Zhou,Jingze Li
Lithium (Li) metal anode (LMA) is one of the most promising anodes for high energy density batteries. However, its practical application is impeded by notorious dendrite growth and huge volume expansion. Although the three-dimensional (3D) host can enhance the cycling stability of LMA, further improvements are still necessary to address the key factors limiting Li plating/stripping behavior. Herein, porous copper (Cu) foam (CF) is thermally infiltrated with molten Li-rich Li-zinc (Li-Zn) binary alloy (CFLZ) with variable Li/Zn atomic ratio. In this process, the LiZn intermetallic compound phase self-assembles into a network of mixed electron/ion conductors that are distributed within the metallic Li phase matrix and this network acts as a sublevel skeleton architecture in the pores of CF, providing a more efficient and structured framework for the material. The as-prepared CFLZ composite anodes are systematically investigated to emphasize the roles of the tunable lithiophilicity and hierarchical structure of the frameworks. Meanwhile, a thin layer of Cu-Zn alloy with strong lithiophilicity covers the CF scaffold itself. The CFLZ with high Zn content facilitates uniform Li nucleation and deposition, thereby effectively suppressing Li dendrite growth and volume fluctuation. Consequently, the hierarchical and lithiophilic framework shows low Li nucleation overpotential and highly stable Coulombic efficiency (CE) for 200 cycles in conventional carbonate based electrolyte. The full cell coupled with LiFePO 4 (LFP) cathode demonstrates high cycle stability and rate performance. This work provides valuable insights into the design of advanced dendrite-free 3D LMA toward practical application.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Chenyang Cao,Jiang Cheng
We fabricated robust superhydrophilic or superhydrophobic films on porous copper substrates including copper mesh and copper foam for various oil/water separations. By simple acid etching and replacement reaction, a composite film comprised of copper and silver (denoted as Cu@Ag) with superhydrophilic and underwater superoleophobic properties was prepared. After modification with n-dodecanethiol (DDT), the superhydrophobic and superoleophilic film (denoted as Cu@Ag@DDT) with excellent mechanical stability and chemical stability was then obtained. Both the Cu@Ag coated mesh and the Cu@Ag@DDT coated mesh exhibited efficient separation for various immiscible oil/water mixtures. Importantly, the Cu@Ag coated foam and the Cu@Ag@DDT coated foam respectively realized the separation of surfactant-stabilized oil-in-water and water-in-oil emulsions because of the combination of their opposite wettability for water and oils and individual cage-like structure. The facile strategy presented here provides a novel approach for diverse oil/water separations in practice.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Yibo Ao,Jinqing Ao,Ling Zhao,Liwei Hu,Fengsheng Qu,Biao Guo,Xue Liu
Cu(OH)2 nanomaterials are widely investigated for non-enzymatic glucose sensors due to their low-cost and excellent performance. Cu(OH)2 nanomaterials usually grow on substrates to form sensor electrodes. Reported works mainly focus on structure adjusting of the Cu(OH)2 nanostructures, while the optimization of substrates is still lacking. In the present work, directional porous Cu (DPC) was applied as the substrate for the growth of Cu(OH)2 nanograss (NG), and hierarchical structures of Cu(OH)2@DPC were prepared by alkaline oxidation. The morphology and microstructure evolution of the prepared hierarchical structures was investigated, and the non-enzymatic glucose sensing performance was evaluated. Cu(OH)2@DPC exhibits enhanced comprehensive non-enzymatic glucose sensing performance compared to the reported ones, which may benefit from both the effective adsorption of the Cu(OH)2 NG with a relatively high surface area and the high solute exchange of the DPC by a channel effect. This work provides new insights into the further improvement of the non-enzymatic glucose sensing performance of Cu(OH)2 nanostructures by optimizing the substrate structure.
研究领域:
材料科学
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传感器技术
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Chemistry Frontiers
·
2025
·
IF 6.4
Eman-Shaiba Thani,Yi-Ting Yang,Qiu-Yu Du,Rou Yuan,Yong-Qi Zhang,Yu-Tong Yan,Xuan Ai,Yu Chen,Shuni Li
The electrochemical nitrate reduction (NO3RR) offers a promising alternative synthetic route for sustainable ammonia (NH3) production, effectively removing nitrate (NO3−) from wastewater under mild operating conditions. Copper (Cu) nanomaterials are considered to be effective catalysts for NO3RR. This study reports the simple synthesis of a porous Cu nanosheets via a two-step reaction, which are obtained from the electrochemical reduction of CuO nanosheets. The porous Cu nanosheets exhibit a high selectivity and activity for NO3RR, achieving an NH3 yield of 42.5 mg·h-1·mgcat-1 and a Faradaic efficiency of 97% for the conversion from NO3− to NH3 at the potential of −0.7 V (vs. RHE). The prominent electrocatalytic activity can be ascribed to porous architecture, high surface area, and low mass transfer resistance.
研究领域:
材料科学
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环境科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 30
·11966-11973
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IF 0
Yu Zhang,Pengli Zhu,Liang Chen,Gang Li,Fengrui Zhou,Daoqiang (Daniel) Lu,Rong Sun,Feng Zhou,Ching-ping Wong
Novel hierarchical architectures of porous copper (Cu) microspheres assembled with nanoparticles have been successfully synthesized by ingeniously selecting the precursor and complexant through a facile wet chemical reduction method. The resultant porous Cu microspheres have a size distribution of 700 ± 50 nm and have excellent monodispersity. The synergistic effect between the precursor of slightly soluble copper hydroxide and the complexants of polyacrylic acid and ethanol amine exactly induces the generation of unique porous hierarchical architectures. The obtained porous Cu microspheres were applied to reduce and degrade different organic dyes with high concentrations (4-nitrophenol, methylene blue, and rhodamine B) in the presence of NaBH4. Compared with solid Cu particles that have the same size, these porous Cu microspheres exhibit more excellent catalytic activity due to their hierarchical structures. Moreover, the catalyst with universal applicability could be easily separated from the catalytic system and sustainedly possess high stability in recycled reactions.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
TALANTA
·
2016
·
IF 4.035
Xiangheng Niu,Jianming Pan,Fengxian Qiu,Xin Li,Yongsheng Yan,Libo Shi,Hongli Zhao,Minbo Lan
Enzyme-free electrochemical detection of glucose in alkaline media with favorable properties has been acquired by fabricating a robust and large-surface sensing platform, which is composed of anneal-shrinked Cu 2 O dendrites grown on porous Cu foam. On the one hand, the good compatibility of electrodeposited Cu 2 O architectures and Cu foam substrate, together with a post-deposition anneal at 200 °C, offers a mechanically stable interface for glucose determination. On the other hand, the macropores of Cu foam that is decorated with unique Cu 2 O dendrites provide large active surface for electrocatalytic reaction and mass transport. As a result, selective sensing of glucose in the linear concentration range of 0.001–1.4 mM was achieved on the fabricated sensor, with a sensitivity of as high as 5.04 mA cm −2 mM −1 and a detection limit of 0.13 μM. Desired long-term performance stability was obtained, partially due to the strong adhesion of Cu 2 O microstructures to the Cu foam support after annealing. Practical monitoring of glucose in serum samples was also demonstrated on the proposed sensor.
研究领域:
生物医学工程
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材料科学
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
ChemistrySelect
·
2025
·Vol. 10
·期 16
·e202406070
·
IF 2
Tingyu Song,Yonggang Min
Graphical In this work, lightweight porous copper coated bPI with a compact cross-linked structure was prepared. Moreover, porous bPI substrate with different Cu loading was prepared. In further, their rate performance and cycle performance were carried out and compared. The lightweight porous Cu coated bPI as current collector exhibits a good performance. Lightweight copper coated porous polyimide (PI) current collector (CC) with compact cross-linked structure was prepared through electroless plating method. Porous cross-linked PI substrate with different Cu loading was obtained by controlling concentration of electroless plating bath. FTIR, XRD, and SEM was characterized to investigate their chemical structure and morphology. Furthermore, the electrode which was used with the copper coated porous PI CC and commercial planar Cu foil CC was prepared. Their rate performance and cycle performance were carried out and compared. It indicated that the lightweight porous Cu coated bPI as CC show a good performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Yangliao Hu,Xiangheng Niu,Hongli Zhao,Jie Tang,Minbo Lan
With respect to a nonenzymatic electrochemical sensor for detection of small biomolecules like glucose, it is well recognized that an interface with highly electrocatalytic properties is desired. Our previous studies have demonstrated that porous Cu foams from hydrogen evolution assisted electrodeposition could provide beneficial structures for large active surface and mass transfer in glucose sensing ( Biosens. Bioelectron. , 2014, 51: 22-28), and decoration of micro-scale Pt cubes on this multiaperture substrate through manipulative deposition offered exciting activity and stability for electro-catalyzing glucose in neutral media ( Chem. Eur. J. , 2013, 19: 9534-9541). On the basis of these results here we further cover the porous Cu frameworks with a Pt monolayer through the galvanic replacement reaction, and fabricate a new electrochemical interface for high-performance determination of glucose. The sensing surface was facilely assembled by firstly electrodepositing porous Cu architectures with hydrogen evolution and then galvanically replacing the surface layer with Pt, and was well characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and energy dispersive spectroscopy. It was found that the unilaminar Pt-replaced Cu frameworks, with the profitable reaction surface derived from porous skeletons and the underlying activity of Pt-support composites, could supply the highly electrocatalytic oxidation of glucose in phosphate buffer solution (pH 7.4). As a result, the prepared enzymeless sensor provided linear amperometric responses for glucose in the concentration scope of 1∼11 mM, with a high sensitivity of 9.62 μA cm −2 mM −1 .
研究领域:
生物传感
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2023
·Vol. 13
·期 7
·1232
·
IF 2.9
Fei Chen,Jiahao Zhao,Hao Wang,Honglin Li,Guanchao Yin,Meirong Cai,Yangwei Wang,Qiang Shen
The nanoporous structure of oil-impregnated porous copper is closely related to its tribological and oil-retention properties, which are essential for its anti-friction and anti-wear, and long-lasting lubrication. In this study, different component Cu-Al precursors were obtained via plasma-activated sintering, followed by a dealloying method to obtain bulk nanoporous copper with different porosities. The effect of the nanoporous structure on oil-retention capacity and tribological properties was investigated. The results showed that as the porosity increased from 47.48% to 67.69%, the oil content increased from 8.01% to 20.18%, while the oil-retention capacity decreased from 97.12% to 33.92% at 7000 r/min centrifugal speed. With the storage of oil, the average friction coefficient was reduced by 68.2–85.9%. The self-lubricating effect can be ascribed to an oil film formed on the surface, and the main wear forms were abrasive wear and fatigue wear. This study may provide guidance for the development of high-performance oil-impregnated lubricating nanoporous copper.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）