ACS Catalysis
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2026
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IF 13.6
Xianglong Meng,Yanjiao Wang,Ruiping Deng,Soryong Chae,Chunzheng Wang,Girolamo Giordano,Zifeng Yan,Hailing Guo,Svetlana Mintova
A strategy for synthesizing bimetallic catalysts confined within zeolite frameworks, offering a promising approach for stabilizing metal species under harsh reaction conditions, is disclosed. A dual-stage synthesis strategy including alkali etching to open the channels of Silicalite-1 (S-1) zeolite, exposing internal hydroxyl defects that serve as anchoring sites for Cu and Zn species, is presented. This was followed by a dry-gel conversion encapsulation step to yield Cu-ZnO@S-1 catalyst. The competitive occupation of these sites by Cu and Zn facilitates the formation of high-density Cu-ZnO interfaces. Under reaction conditions of 3 MPa and 250 °C, the catalyst achieves a methanol selectivity above 99.2% and a space-time yield (STY) of 2.1 g gCu–1 h–1, nearly four times higher than that of copper-containing catalyst (Cu@S-1, 0.54 g gCu–1 h–1) and significantly outperforming the sample prepared by conventional impregnation (Cu-ZnO/S-1, 1.6 g gCu–1 h–1). The oxygen-deficient Cu-ZnO1–x sites at the Cu-ZnO interface are further demonstrated to serve as genuine active centers for methanol synthesis. The methanol formation reaction proceeds via the formate pathway, and the high density of Cu-ZnO1–x sites effectively lowers the activation barrier for the hydrogenation of *HCOO to *H2COO.
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CERAMICS INTERNATIONAL
·
2026
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IF 5.6
Dengji Zhu,Xinmeng Wu,Haiwei Han,Yiming Zhang,Jiawei Wu,Yi Ding,Lihua Yu,Junhua Xu,Bin Zuo
The investigation of friction response behavior and underlying mechanisms of modified implants in a simulated human tissue fluid environment is critical for assessing their in vivo service life. This study presents an in vitro evaluation of implant coatings through integrated experimental and simulation approaches. A series of ZrBN-Cu composite films were fabricated using non-equilibrium magnetron sputtering, and the composition, microstructure, mechanical properties, chemical stability, and tribological behavior in bovine serum albumin (BSA) solution were systematically characterized. The results reveal that the ZrBN-Cu films comprise fcc-ZrN, hcp-ZrB 2 , and fcc-Cu. With increasing Cu content, the hardness and elastic modulus initially increase and subsequently decrease, reaching peak values of 25.45 GPa and 274.99 GPa, respectively, at a Cu concentration of 1.1 at.%. Moreover, the ZrBN-Cu film with 1.1 at.% Cu demonstrates optimal electrochemical stability, exhibiting a corrosion current density of 1.6×10 -6 A/cm 2 and a corrosion potential of -0.04 V, indicative of superior chemical resistance. In BSA solution, the coefficient of friction gradually decreases and stabilizes at 0.11. The wear rate initially declines and then slightly increases with Cu content, reaching a minimum value of 2.1×10 -8 mm 3 N -1 m -1 at 1.1 at.% Cu. The lubrication and wear mechanisms of the ZrBN-Cu/BSA system were analyzed from lubrication state, adsorption behavior, and tribochemical reactions. The findings suggest that: (1)The ZrBN-Cu/BSA system operates under boundary lubrication conditions. (2)Cu incorporation facilitates the formation of a stable physical and chemical adsorption layer on the surface, while B enhances the structural integrity of this layer. (3)Cu exerts a catalytic effect, promoting the degradation of BSA molecules during friction and resulting in the formation of high-molecular-weight carbon-based compounds with lubricating properties.
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RSC Advances
·
2019
·Vol. 9
·期 62
·35948-35956
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IF 3.049
Yue Pan,Weijia Zeng,Rong Hu,Bo Li,Guiling Wang,Qintang Li
Cu foil is widely used in commercial lithium ion batteries as the current collector of anode materials with excellent conductivity and stability. In this research, commercial Cu foil was chosen as the current collector and substrate for the synthesis of Cu doped flake-NiO via a traditional hydrothermal method. The effect of the ratio of Cu and the calcination temperature on the electrochemical performance of NiO was investigated. The structure and phase composition of the Cu doped flake-NiO electrode were studied through X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy dispersive X-ray analysis (EDAX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and inductive coupled plasma emission spectrometry (ICP). The electrochemical properties of the Cu doped flake-NiO electrode were studied through cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and a galvanostatic charge–discharge cycling technique. According to the results, the Cu-doped NiO electrode, calcined at 400 °C with a molar ratio of Cu : Ni = 1 : 8, exhibited a high reversible charge capacity. The good cycling stability and rate performance indicate that the as-prepared electrode can be applied as a potential anode for lithium ion batteries.
研究领域:
材料科学
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电化学
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储能技术
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纳米材料
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电池技术
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Junnan Liu,Qiuyang Luo,Shu Xia,Xingfu Yang,Jie Lei,Qi Sun,Xiaohu Chen,Jiaojing Shao,Xiaoning Tang,Guangmin Zhou
Structuring a stable artificial coating to mitigate dendrite growth and side reactions is an effective strategy for protecting the Zn metal anode. Herein, a Cu-Ag double-layer metal coating is constructed on the Zn anode (Zn@Cu-Ag) by simple and in-situ displacement reactions. The Cu layer enhances the bond between the Ag layer and Zn substrate by acting as an intermediary, preventing the Ag coating from detachment. Concurrently, the Ag layer serves to improve the corrosion resistance of Cu metal. During plating, the initial Cu sheets and Ag particles on the surface of Zn@Cu-Ag electrode gradually transform into a flat and smooth layer, resulting in the formation of AgZn, AgZn 3 , and (Ag, Cu)Zn 4 alloys. Alloys play a multifunctional role in inhibiting dendrite growth and side reactions due to decreased resistance, low nucleation barrier, enhanced zincophilicity, and strong corrosion resistance. Consequently, the Zn@Cu-Ag symmetric cell exhibits continuous stable performance for 3750 h at 1 mA cm −2 . Furthermore, the Zn@Cu-Ag||Zn 3 V 3 O 8 full cell achieves an initial capacity of 293.4 mAh g −1 and realizes long cycling stability over 1200 cycles. This work provides new insight into the engineering of an efficient artificial interface for highly stable and reversible Zn metal anodes.
研究领域:
材料科学
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电化学
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储能
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9
Jiangyuan Qiu,Ruxin Liu,Tao Yu,Wenxuan Li,Lingyuan Wu,Weiming Zhong,Ting Wan,Rui Guo,Zaiyin Huang,Xuanwen Liu
This study addresses the technical challenges of traditional processes for precious metal recovery from electronic waste, including high energy consumption, severe pollution, and the use of highly corrosive reagents. We innovatively propose a green recovery strategy based on piezoelectric catalysis. By combining the compositional characteristics of electronic waste (Cu > 80 wt%, Au 0.1–0.5 wt%) with the hard-soft acid-base (HSAB) theory, we developed a BOC-NH₄Cl-CH₃CN-H₂O catalytic system. This system achieves efficient dissolution of copper and gold (1334 mg h −1 ·g-cat −1 and 2.7 mg h −1 ·g-cat −1 , respectively) through an oxidation-coordination mechanism, with dissolution rates reaching 99.8% and 95.5% in simulated systems and enrichment purity exceeding 99%. Based on the experimental data, it is proposed that under piezocatalysis, acetonitrile is oxidized to acetamide, which then synergistically coordinates with NH₃/Cl − to form stable coordination products (with binding energies of E_Cu = −4.034 eV and E_Au = −2.993 eV, respectively). This process may serve as a key mechanism responsible for the significant enhancement of metal dissolution. Due to the lower oxidation potential of Cu ( E° = 0.34 V) compared to Au ( E° = 1.5 V), the system exhibits a “high‑copper, low-gold” selective dissolution characteristic that aligns well with waste composition. This technology provides an efficient and environmentally friendly solution for metal recovery from electronic waste.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
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IF 12.2
Leliang Wu,Dunyu Sun,Chenyu Yan,Longjiong Chen,Dequan Zhang,Chengdu Qi,Shaogui Yang,Huan He
Stable copper-ethylenediaminetetraacetic acid (Cu-EDTA) poses significant challenges for simultaneous ligand degradation and metal recovery. A self-driven ultraviolet/periodate (UV/PI) process that enables efficient decomplexation of Cu-EDTA coupled with in situ copper recovery was developed. This process achieved 94.50% decomplexation and 68.94% copper recovery via precipitation within 90 min without pH adjustment. Mechanistic investigations revealed that the UV/PI process generates reactive iodine species (IO3•) and singlet oxygen (1O2), and Cu(I)/Cu(II)/Cu(III) redox cycling, driving stepwise decarboxylation of EDTA and Cu2+ release. Consequently, proton consumption during PI activation and IO3– formation induces a gradual pH increase to ∼7.5, triggering the precipitation of released Cu2+. This intrinsic coupling of oxidative decomplexation and pH-driven precipitation enables a self-sustained pathway for simultaneous ligand removal and Cu recovery. While the electrical energy per order (EEO) is comparable to that of UV/H2O2, the UV/PI process exhibits markedly lower energy consumption per mass of copper recovered than other UV/oxidant processes. Moreover, the UV/PI process further exhibits strong resistance to water matrix interference, effective performance in real electroplating wastewater, and broad applicability toward various heavy metal complexes. This study provides a mechanistically informed and environmentally benign strategy for the treatment of metal-EDTA-containing wastewater.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Kai Liu,Yeming He,Jiaxin Wei,Feiyang Wen,Dongxia Zhang,Zemin He,Jianxin Guo,Zhiyuan Liang,Jianjing Gao
Controllable synthesis of rough-surfaced metal nanostructures remains a critical challenge in surface materials science, as surface roughness directly determines the plasmonic, catalytic and sensing properties of nanomaterials. Herein, we report a facile lattice mismatch-directed island growth strategy for fabricating roughened Ag-Cu heterostructured triangular nanoframes with naturally roughened surfaces, using Cu nanoplates as dual-functional sacrificial templates. The intrinsic lattice mismatch between face-centered cubic Ag and Cu drives the preferential island-like nucleation of Ag atoms on the high-energy edges of Cu nanoplates, avoiding the formation of a continuous epitaxial layer. This unique growth mode generates nanoframes with abundant surface defects and dense plasmonic hot spots, while the residual Cu induces spontaneous interfacial electron transfer to form an electron-rich Ag surface. The as-prepared nanoframes exhibit 13.5-fold higher SERS activity than smooth monometallic Ag nanoplates, and show excellent performance in both aqueous dispersion and solid substrate configurations. This work provides a general and scalable approach for regulating the surface microstructure of template-derived nanostructures through lattice mismatch engineering.
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CRYOGENICS
·
2026
·
IF 2.5
Changkun Wang,Zuhua Chen,Jun Shen,Yong-Chang Lau,Heng Tu,Changmin Xiong
Single crystals of Ce 2 X 3 (NO 3 ) 12 ·24H 2 O (X=Cu, Co, CXN) were successfully synthesized, all crystallizing in the trigonal space group R ¯ 3 . Under a magnetic field variation of 0-9 T at 2 K, Ce 2 Cu 3 (NO 3 ) 12 ·24H 2 O and Ce 2 Co 3 (NO 3 ) 12 ·24H 2 O exhibit large magnetic entropy changes of 15.18 J·kg -1 ·K -1 and 16.19 J·kg -1 ·K -1 , respectively. Notably, the magnetic entropy changes of these novel crystals significantly exceed that of Ce 2 Mg 3 (NO 3 ) 12 ·24H 2 O (CMN), which is only 6.33 J·kg -1 ·K -1 under identical conditions. Meanwhile, the refrigerant capacity (RC), constrained-range equivalent refrigerant capacity product (RCP) and temperature-averaged entropy change (TEC) of CXN are also comprehensively superior to those of CMN. These performances suggest that CXN are promising candidates for ultra-low temperature magnetic refrigeration applications.
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ELECTROANALYSIS
·
2026
·Vol. 38
·期 7
·e70190
·
IF 2.6
Hao Liang,Xuening Jin,Hebing Pei,Zunli Mo
The enantioselective recognition of biomolecules such as amino acids has significant value in medicine, life sciences, agriculture, and other fields. In this study, a novel electrochemical chiral sensor, CS@Cu-β-CD/GCE, was successfully prepared by self-assembling Cu 2+ modified β-cyclodextrin (β-CD) with chitosan (CS) and coating it onto a glassy carbon electrode (GCE). This method effectively addresses the agglomeration issues associated with CS while significantly enhancing the conductive properties of the material and increasing the number of chiral recognition sites. Experimental testing and structural analysis revealed that differentiated hydrogen bonding provides the driving force for molecular binding, while the confinement of the Cu-β-CD cavity and steric hindrance enable structure selection. At optimized testing conditions (30 s incubation, 25°C, pH = 6.0, 5.0 mM), it exhibited the peak current ratio (I D /I L ) of up to 2.25 for phenylalanine (Phe) isomers, outperforming most previously reported electrochemical sensors. Meanwhile, the CS@Cu-β-CD/GCE exhibits excellent stability (98.6% signal retention after 16 days of storage at 5°C), high enantiomeric selectivity for Phe, and good resistance to interference, can be developed for distinguishing racemic phenylalanine. This strategy provides a simple and efficient approach for electrochemical chiral identification of Phe enantiomers and holds wide-ranging application prospects in chiral sensing and drug analysis.
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yuan Gao,Jiaqi Sun,Pei-Lin Gao,Qi Zhao,Xinyi Yu,Yujie Song,Jun Hu,Dan Wang,Zhi-Gang Shen,Ze-Hai Xu,Hua Sheng,Zhong-Ting Hu
A bactericidal membrane (CNTs-PEI/CZIS) was designed by anchoring Cu-ZnIn 2 S 4 on CNTs-PEI. • In N coordination contributes to the structural stabilization between the CZIS and CNTs-PEI. • CNTs-PEI/CZIS has ultra hydrophilicity/oleophobicity with O/W separation efficiency of ~100%. • CNTs-PEI/CZIS has bactericidal rate of ~100% both at 10 6 CFU mL −1 (artificial) and actual water. • CNTs-PEI/CZIS has excellent self-cleaning and stable long-term antibacterial activity. Membrane technology for water disinfection (MTWD) offers high effluent quality with a small footprint, but its practical application is still limited by bacterial fouling-induced flux decline and insufficient long-term disinfection capability. Herein, we designed a self-cleaning CNTs-PEI/Cu-ZnIn 2 S 4 composite membrane by depositing an ultralow amount of copper-supported ZnIn 2 S 4 (CZIS) nanoflowers (only 2.5 mg per 50 mm-diameter membrane) onto polyethyleneimine-functionalized carbon nanotubes (CNTs-PEI). This membrane preserves the high permeability and hydrophilic-oleophobic characteristics (oil-water separation efficiency of 99.3 ± 0.6%, with a max flux of 6470 ± 500 L m −2 h −1 bar −1 ) is mainly ascribed to the CNTs-PEI construction, as well as the efficient photocatalytic sterilization activity (with an efficiency ~100% under bacterial concentration of 10 6 CFU mL −1 ) and its self-cleaning capability (overall, >6000 L m −2 h −1 bar −1 ) is demonstrated to CZIS nanomaterial. In practical test, the antibacterial efficiency in natural water reaches ~100% even over 20 cycles. The integrated properties of CNTs-PEI/Cu-ZnIn 2 S 4 composite membrane are related to the design of interfacial coupling between CZIS and CNTs-PEI through In N coordination and the combination of visible-light photocatalytic activity. This work provides a promising strategy on constructing a novel composite membrane for overcoming biofouling by bacterial disinfection. A visible-light-driven carbon nanotubes (CNTs)-based composite membrane enables efficient water disinfection and purification. By anchoring Cu-ZnIn 2 S 4 nanoflowers onto hydrophilic-oleophobic PEI-functionalized CNTs, the membrane achieves ~100% bactericidal efficiency and excellent antifouling/self-cleaning performance. Its functionality in bacterial inactivation highlights its potential in sustainable and advanced water treatment technologies. Download: Download high-res image (211KB) Download: Download full-size image
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Xiao-Hui Wang,Yue-Han Qin,Xue Xiao,Yu Chen,Shu-Ni Li
Histidine-functionalized Cu 2 O effectively stabilizes Cu + species under cathodic conditions. • The histidine functionalization enhances the co-adsorption of *CO and *NO x intermediates. • The formation of an interfacial hydrogen-bond network on the catalyst surface accelerates proton transfer kinetics. • The histidine-functionalized Cu 2 O catalyst achieves a high urea Faradaic efficiency alongside a notably high yield rate. Electrocatalytic C-N coupling for urea synthesis from CO 2 and nitrate (NO 3 - ) offers a sustainable alternative to the energy-intensive industrial process. Copper (Cu)-based catalysts are uniquely capable of activating both CO 2 and NO 3 - ; however, the catalytically active Cu + species is prone to over-reduction to Cu 0 under cathodic conditions, leading to poor selectivity and instability. Herein, we report a histidine-functionalized Cu 2 O nanospheres (His-Cu 2 O NSs) that stabilize Cu + under operating conditions. The preserved Cu + electronic structure promotes synchronized adsorption of *CO and *NO x intermediates, while protonated amino groups construct a hydrogen-bonded interfacial water network that accelerates proton transfer. As a result, the optimized catalyst achieves a urea Faradaic efficiency of 42.3% and a yield rate of 41.9 mmol h −1 g −1 at −1.1 V potential, with exceptional stability over 100 h in both H-type and flow cells. In situ spectroscopy and density functional theory calculations reveal that histidine coordination not only enhances *CO adsorption but also lowers the energy barrier for C-N coupling, thereby accelerating C-N bond formation. Meanwhile, the in-situ EXAFS results indicate that Cu + species can effectively be retained after histidine modification. This work establishes a molecular-level design principle for regulating complex multi-reactant electrocatalysis and provides a versatile strategy for promoting efficient C-N coupling reactions. Download: Download high-res image (156KB) Download: Download full-size image Functionalizing Cu 2 O nanospheres establishes a generalizable stabilization-via-delocalization principle providing a blueprint for designing durable organic-inorganic interfaces for electrocatalytic urea synthesis.
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Molecular Catalysis
·
2026
·
IF 4.3
Peng Zhang,Guang-Hui Liu,Yao-Shun Wen,Yu-Hong Kang,Yang-Fan Yin,Sheng Li,Zhi-Hao Ma,Zhi-Xin Li
Crystallinity engineering of La 2 O 2 CO 3 boosts RWGS reaction performance. • Cu/La-24 achieves 58.3% CO 2 conversion with 99.9% CO selectivity at 600 °C. • Higher crystallinity strengthens Cu-support interaction and inhibits catalyst sintering. Reverse water-gas shift (RWGS) reaction offers a promising route for CO production and CO 2 utilization, but its industrialization has been hindered due to the lack of efficient catalysts. Among non-precious alternatives, Cu-based catalysts show high CO selectivity but suffer from poor thermal stability and rapid deactivation. Here, La 2 O 2 CO 3 support crystallinity engineering was adopted to enhance the performance over Cu-based catalysts. Cu/La-24 (high support crystallinity) and Cu/La-6 (low support crystallinity) catalysts were synthesized and evaluated. Compared with Cu/La-6 catalyst, Cu/La-24 catalyst exhibited a better CO 2 conversion (58.3% at 600 °C), while improving the reaction rate and catalytic stability. Characterization results revealed that higher crystallinity strengthened metal-support interaction, enhanced CO 2 adsorption capacity and inhibited catalysts sintering, collectively boosting catalytic performance. This work demonstrates that crystallinity regulation is an effective strategy for designing stable and active Cu-based catalysts, paving the way for designing more efficient catalysts for RWGS reaction. Download: Download high-res image (182KB) Download: Download full-size image
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