Catalysts
·
2026
·Vol. 16
·期 8
·689
·
IF 4.5
Zhongqiang Bao,Yiwei Zhang,Zhenhua Ji,Zhenguo Li,Peng Zhang,Ding Luo,Zhanming Chen,Han Gao,Lei Zhu,Hao Chen
Supported Pt catalysts are highly active for the selective catalytic oxidation of ammonia (NH3-SCO), but their practical use is limited by poor N2selectivity and insufficient hydrothermal durability under high-temperature exhaust conditions. Herein, we report a composition-regulated high-entropy oxide interface strategy to stabilize Pt–Cu dual sites and steer NH3oxidation toward selective N2formation. A series of fluorite-type Ce-based high-entropy oxides, including CeZrLaPrYOx, CeSmLaPrYOx, and CeSnLaPrYOx, were constructed as thermally robust supports for Pt and Cu loading. Among them, PtCu/HEO-Zr calcined at 1000 °C exhibits the best NH3-SCO performance, achieving 90% NH3conversion at 260 °C while maintaining N2selectivity above 80% over a broad temperature window of 100–300 °C under a high weight hourly space velocity of 100,000 mL·g−1·h−1. More importantly, after harsh hydrothermal aging at 800 °C with 10 vol% H2O for 12 h, the catalyst shows negligible activity loss and nearly unchanged N2selectivity, demonstrating exceptional structural and catalytic robustness. Structural and surface analyses reveal that Zr incorporation optimizes the fluorite high-entropy lattice, increases oxygen vacancy concentration, promotes lattice oxygen mobility, strengthens surface acidity, and enriches active Cu2+species, thereby enhancing the interfacial cooperation between NH3activation and oxygen-assisted intermediate conversion. In situ DRIFTS further reveals that PtCu/HEO-Zr favors an Olat-assisted internal selective catalytic reduction pathway, in which adsorbed NH3is activated to -NH2species and subsequently reacts with lattice oxygen-derived intermediates to form N2O22−-like species that decompose into N2and H2O. Meanwhile, the formation of nonselective NOxand N2O products is suppressed. This work highlights high-entropy oxide-supported Pt–Cu interfaces as a promising platform for designing hydrothermally durable and N2-selective NH3-SCO catalysts.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Peng Gu,Yihe Fan,Jin Liu,Zhuang Cai,Jiannan Du,Yidong Song,Ying Dai,Guofeng Wang,Jinlong Zou
Size-controllable Cu 2 O nanocubes grow in-situ on AMXene via Oswald-ripening mechanism. • Cu 2 O induces MXene amorphization, generating edge-ligand unsaturated sites for HER. • The electron-rich Cu + boosts orbital hybridization for selective glycerol oxidation. • The catalyst requires only 1.31 V electrolyzer voltage with stability exceeding 150 h. Glycerol oxidation reaction (GOR) is a mild, sustainable pathway with great potential for producing high-value chemicals such as formic acid (FA). Integrating GOR with hydrogen evolution reaction (HER) circumvents the high energy barrier of anodic oxygen evolution in traditional water splitting. However, achieving selective C C bond cleavage in glycerol-to-FA conversion remains a major technical and scientific challenge. Here, via the Ostwald ripening mechanism, size-tunable cuprous oxide nanocubes are in-situ grown on amorphous MXene (Cu 2 O/AMXene), creating well-defined dual active sites with clear functional division: electron-rich Cu + for GOR and Ti sites for HER. The optimized Cu 2 O-0/AMXene (28 nm Cu 2 O) delivers a HER overpotential of 32 mV at 10 mA cm −2 , a GOR potential of 1.13 V at 10 mA cm −2 , and a full electrolyzer voltage of 1.31 V, while maintaining excellent catalytic efficiency after 150 h of continuous operation. Cu 2 O growth induces MXene amorphization, generating edge ligand-unsaturated Ti sites that enhance water dissociation for proton supply, while Ti 4+ promotes hydrogen spillover to transfer protons to Ti 3+ for efficient HER. Electron-rich Cu + forms asymmetric Ti-O-Cu interactions via electron donation from AMXene, enhancing orbital overlap with p orbitals of glycerol oxygen atoms for GOR. This electron-rich environment inhibits Cu + oxidation to Cu 2+ at high anodic potentials, stabilizing the active s - p hybrid configuration. This work also highlights the critical role of O-functional groups on AMXene and lattice O atoms in Cu 2 O for strengthening metal-support interactions. Download: Download high-res image (225KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 8
·229
·
IF 2.5
Sun Zeyun,Wang Jiapan,Pu Weijia,Liu Yang,Xiao Yahui,Pu Yanfeng,Zhao Junwei,Liu Yong
The hydrogenation of esters to corresponding alcohols is a crucial yet challenging process in sustainable chemistry, demanding efficient and stable non-noble metal catalysts. In this study, a CuZnO x /CeO 2 metal-oxide catalyst was synthesized via a metal-organic framework (MOF)-derived route for the hydrogenation of cyclohexyl acetate. The catalyst, featuring highly dispersed Cu species and low Cu loading (11.4wt%), was obtained by calcining a Ce-MOF precursor incorporated with Cu and Zn. By modulating the reduction temperature, the mixed valence state Cu 0 and Cu + active species were observed to coexist on the catalyst surface. After systematic investigation of structure-activity relationship in catalytic hydrogenation, and the optimized CuZnO x /CeO 2 -400-350 catalyst reached 99.9% conversion of cyclohexyl acetate, with selectivity of 98.2% to cyclohexanol under mild conditions (240 °C, 3 MPa H 2 , 11.4 wt% Cu loading in actual, 4 h). Moreover, it exhibited outstanding recyclability, maintaining over 99.0% conversion and above 97.0% cyclohexanol selectivity after five cycles. XRD and XPS analyses revealed no significant changes in the crystal structure or Cu 0 /Cu + species after reaction, confirming excellent resistance to sintering and remarkable structural stability. This work affords a feasible way for designing high-performance catalysts for ester hydrogenation, demonstrating significant potential for industrial application. Graphical
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yufeng Liu,Xiaofan Yang,Jinghua Hu,Junhao Liu,Peiwen Wu,Huifang Cheng,Huaming Li,Jixing Liu,Wenshuai Zhu
The hydroisomerization of isobutane is of considerable practical significance for the development of low-carbon and high-efficiency ethylene production technologies. However, conventional noble metal-solid superacid catalysts used for this reaction suffer from drawbacks including high cost and catalyst deactivation caused by the loss of halogen species and other active components. Herein, a series of highly dispersed W-Cu/Beta catalysts were designed and prepared via a facile ion-exchange method, and their catalytic performances toward isobutane hydroisomerization were systematically investigated. The results show that the introduction of WO x species effectively suppresses strong Brønsted acid sites of the Beta zeolite and modifies the Brønsted/Lewis acid balance of W-Cu/Beta catalysts. Although both Brønsted and Lewis acid site concentrations decrease with increasing W loading, Brønsted acidity is reduced to a greater extent, resulting in a lower Brønsted/Lewis acid site ratio. This acidity regulation is associated with suppression of undesired cracking reactions and improved selectivity toward n-butane. Under reaction conditions of 2 MPa, 380°C, and a weight hourly space velocity of 2.0 h ‒1 , the 5%W-Cu/Beta catalyst exhibits the best catalytic performance with isobutane conversion of 62.3% and n-butane yield of 32.4%. This enhanced catalytic behavior is attributed to optimized acidity and an appropriate distribution of catalytic active sites. Kinetic analyses indicate that WO x introduction alters the apparent kinetic behavior of the catalysts and is accompanied by an increase in apparent activation energy. The improved catalytic selectivity is correlated with changes in acidity distribution and suppression of cracking pathways rather than direct evidence of carbocation stabilization.
✓ 已验证
产品关联
DOI
高影响因子
Metals
·
2026
·Vol. 16
·期 7
·738
·
IF 3.1
Zimeng Zhang,Chenghao Zhang,Qian Cheng,Chun Li,Xiaoqing Si,Zongjing He,Lin Cao,Chengxian Li,Shisheng Huang,Jun Wang,Yang Liu
The reliable joining of graphite and Cu holds significant promise for applications in electronic heat dissipation and sliding electrical contacts. However, the substantial differences in their physicochemical properties, poor wettability, and mismatch in coefficients of thermal expansion often result in low joint strength. In this study, a two-step joining strategy combines surface modification with low-temperature sintering, and this is proposed for fabrication of Cu/graphite joints. First, the graphite surface is modified using an AgCuTi active filler alloy under vacuum conditions. Ti preferentially segregates at and reacts with the graphite interface, leading to the formation of an Ag-Cu eutectic modified layer on the graphite surface. Subsequently, low-temperature joining of the modified graphite to a Cu substrate is achieved via a hot-pressing sintering process using a Ag paste. In the sintered joint, the Ag sintered layer forms sound metallurgical bonds with both the Cu substrate and the graphite-modified layer. When the sintering temperature is 250 °C, the joint exhibits a shear strength of 30 MPa, which is significantly higher than that of a directly brazed joint. This strategy effectively reduces thermal residual stress in the joint during cooling and shifts the failure location from the brittle graphite substrate to the ductile Ag sintered layer, thereby substantially enhancing the mechanical performance.
✓ 已验证
产品关联
DOI
高影响因子
iScience
·
2026
·Vol. 29
·期 7
·
IF 4.5
Linqin Xie,Deng Huang,Kai Chen,Bangxuan Zhu,Yangkai Zhao,Jieke Li,Shouyi Wang,Mingliang Wu,Yili Xiang
Chronic diabetic wounds require dressings that combine high liquid absorption, antibacterial activity, and bioactivity to support tissue repair. Here, copper-containing mesoporous bioactive glass (Cu-MBG) was incorporated into polyurethane foam to create a bioactive composite dressing (PU-Cu-MBG). The resulting foam exhibited strong liquid absorption, suitable water vapor transmission, and robust mechanical properties. The Cu-MBG endowed the dressing with antibacterial activity (>99% against Staphylococcus aureus and Escherichia coli ) and promoted the proliferation of human endothelial cells. In vivo , the PU-Cu-MBG dressing enhanced angiogenesis, collagen deposition, and accelerated wound closure compared with commercial dressings in a diabetic skin wound model. These findings demonstrate that bioactive glass-loaded foam dressings can effectively combine physical and biological functions, offering a promising approach for the management of chronic diabetic wounds.
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Hui-ting Hu,Xiao-mei Li,Wen-cai Jiang,Chen Ni,Yu-yang He,Guo-qi Zhang,Hao Yu,Zhi-Bo Hou
Per- and polyfluoroalkyl substances (PFAS) were a class of hazardous contaminants known for their high environmental persistence and toxicity. Due to their strong polarity, wide variety, and broad distribution, a rapid, accurate, and on-site detection method was urgently needed for future screening and emergency response. Herein, a dandelion-like Pd/Cu nanozyme with triple enzyme-like activities (oxidase-like, peroxidase-like, and laccase-like) was synthesized by one-step hydrothermal method. Different PFAS species inhibited these three enzyme-like activities to varying extents. By quantifying absorbance changes, distinct fingerprint patterns were constructed, and a three-channel colorimetric sensor array was developed. This array exhibited high selectivity and robust anti-interference capability for discriminating seven PFAS species. The LDA score plot revealed distinct clustering of different PFAS classes and complex mixtures, indicating clear separability among their fingerprints. The developed nanozyme sensor array was successfully applied to the detection of PFAS in environmental water (river, lake, and tap water). This work provided a novel strategy for selective and reliable detection of PFAS in complex environmental matrices.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 15
·2573
·
IF 5.1
Shuzhen Guo,Shanshan Xu,Yuhao Ma
Carbon fiber (CF)-reinforced polyethylene (PE) composites have low density, outstanding corrosion resistance and good processability. These materials are widely promising for household appliances, automobiles and construction industries. Nevertheless, PE is a non-polar inert matrix with extremely low surface energy, leading to poor interfacial wettability and bonding force with CF. Interfacial debonding frequently occurs along with low load transfer efficiency, failing to meet the service requirements of high-performance structural components. In this study, CF was carboxylated with hydrogen peroxide, and Cu-BTC porous materials were in situ grown on the fiber surface to obtain modified CF (CF-Cu-BTC). The CF-Cu-BTC was then incorporated into a low-density polyethylene (LDPE) matrix. The MOF layer improves the interfacial compatibility and bonding force between the fibers and the matrix and enhances the overall mechanical properties and structural stability of the composites. The mechanical performance of CF composites is remarkably superior to that of pure LDPE. Compared with the pristine sample with a tensile strength of 11.04 MPa, the composite exhibits an enhanced tensile strength of 26.63 MPa, an increase of 141.20%. Scanning electron microscopy results confirm that no gaps exist between the CF and LDPE, verifying favorable interfacial compatibility. MOF-modified CF effectively improves the mechanical properties of resin-based composites. This study provides practical guidance for advanced composite applications.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Wenbin Wang,Wei Yang,Xin Yu,Tao Long,Sha Deng,Yinying Zhu,Haodong Sun,Hongwu Zhang,Guanghao Zhou
Developing cost-effective electrocatalysts with accelerated kinetics is pivotal for sustainable hydrogen production via water electrolysis. In this study, we propose a quaternary deep eutectic solvent (DES) system to directly fabricate Co-Cu alloy nanosheets on a NiMo foam substrate via one-step electrodeposition. Comprehensive characterizations reveal that the catalyst undergoes a dynamic surface reconstruction during electrochemical activation, evolving from initial nanosheets into a hierarchical rod-shaped architecture. This process generates a synergistic crystalline/amorphous heterojunction composed of CoOOH and Cu(OH)2, which profoundly optimizes the electronic structure. Consequently, the activated Co-Cu/NiMo catalyst delivers superior oxygen evolution reaction performance, requiring a low overpotential of 241 mV to reach 10 mA cm−2. Microkinetic and practical evaluations further highlight an impressive turnover frequency of 27 s−1 at 250 mV and a near-quantitative Faradaic efficiency of 98.4%. These metrics confirm that the bimetallic synergy fundamentally accelerates the intrinsic per-site reaction kinetics and ensures highly selective charge utilization. Coupled with robust durability exceeding 60 h, this work validates the efficacy of quaternary DESs in materials synthesis and provides valuable insights into reconstruction-induced activity enhancements in transition metal alloys.
✓ 已验证
DOI
高影响因子
RARE METALS
·
2026
·Vol. 45
·期 8
·e70443
·
IF 12.1
Weinan Yao,Wenzhuo Sun,Mengjiao Wu,Nana Li,Wenting Li,Xiaotian Guo,Bin He,Huan Pang
en This link goes to a English section zh This link goes to a Chinese section A facile coprecipitation-pyrolysis strategy was employed to fabricate Cu/Co nanoparticles (NPs) embedded in nitrogen-doped carbon matrices (Cu/Co@N-C) through the carbonization of CuCo-MOF precursors. Moreover, monometallic counterparts of Cu@N-C and Co@N-C were also prepared via carbonization of bimetallic CuZn-MOF and CoZn-MOF, respectively. Electrochemical tests confirm that Cu acts as the key active center for nitrite oxidation. By adjusting the Cu/Co molar ratios, a series of cubic Cu/Co@N-C composites with tunable sizes of 200–500 nm were achieved. The synergistic interaction between metallic Cu/Co NPs and the conductive N-C framework enhances catalytic activity and reduces overpotential compared to the monometallic Cu counterpart. The optimized Cu/Co@N-C/glass carbon electrode (GCE) sensor delivered a superior sensitivity as high as 0.461 μA μM −1 cm −2 and wide detection range of 2–10000 μM. The Cu/Co@N-C/GCE sensor also demonstrated superior selectivity, long-term stability of 92.5% retention after 21 days, and reproducibility. This work establishes a versatile approach for engineering various MOF-based catalysts, demonstrating promising potential for applications in environmental monitoring and food safety analysis. 摘要 en This link goes to a English section zh This link goes to a Chinese section 采用一种简便的共沉淀–热解策略 , 以 CuCo-MOF 前驱体为碳源进行碳化 , 成功制备了氮掺杂碳基质负载的 CuCo 双金属纳米颗粒复合材料(Cu/Co@N-C)。此外 , 还分别基于双金属CuZn- MOF和CoZn-MOF碳化制备了Cu@N-C和Co@N-C。电化学测试表明Cu是亚硝酸盐氧化的关键活性中心。通过调控 Cu/Co 摩尔比 , 获得了粒径可调、尺寸范围为 200–500 nm 的立方体 Cu/Co@N-C 复合材料。与单金属Cu@N-C相比 , 金属Cu/Co NPs与导电N-C框架之间的协同作用增强了催化活性并降低了过电位。优化后的 Cu/Co@N-C/玻碳电极(GCE) 传感器表现出优异的电化学传感性能 , 其灵敏度高达 0.461 μA μM −1 cm −2 , 检测范围宽达 2–10000 μM。Cu/Co@N-C/GCE 传感器还展现出优异的选择性、良好的重复性以及长期稳定性 , 在存放21天后仍可保持 92.5% 的电流响应。该工作为构筑各种MOF 基催化材料提供了一种通用策略 , 显示出其在环境监测与食品安全分析领域的广阔应用前景。
✓ 已验证
产品关联
DOI
高影响因子
Energy Technology
·
2026
·Vol. 14
·期 8
·e70614
·
IF 3.6
Bing Zhang,Yu Zhang,Zhengxin Lu,Song Zhou,Ping Li,Kui Xu,Yonghua Chen
Electrocatalytic CO 2 reduction reaction (CO 2 RR) stands as a pivotal strategy for the selective conversion of CO 2 into high-energy-density hydrocarbons, offering a promising avenue for carbon neutrality. Cu-based electrodes have emerged as a highly potential platform for the production of diverse products, yet their practical application is hindered by the crystallization regulation of electrocatalysts achieving high selectivity for multielectron products. Here, we report Cu-based electrodes, deposited on carbon paper via facile one-step coelectrodeposition methods, for efficient electrocatalytic CO 2 RR. The introduction of trace Ni was found to smooth the surface of Cu-based electrocatalysts, thereby facilitating the electron transfer at the catalytic interface. For CuNi 0.3% electrode, a maximum Faraday efficiency of 30.5% and a CH 4 yield rate of 16.4 mg h −1 cm −1 were achieved at −1.4 V versus RHE, outperforming the Cu electrode (17.9% FE) and the CuNi 0.6% electrode (26.9%). This enhancement might be attributed to the superior surface of the CuNi 0.3% electrocatalyst, with the trace amount of Ni 2+ codeposition playing a critical role in optimizing the smooth surface of the Cu electrode. Density functional theory calculations further revealed that Ni addition is thermodynamically favorable for the deep hydrogenation of *CO by lowering the formation energies of *CO and *COH intermediates.
✓ 已验证
产品关联
DOI
高影响因子
Sustainability
·
2026
·Vol. 18
·期 16
·8079
·
IF 4.1
Hao Liu,Deli Wu,Yufan Chen,Chengsi Hou,Guojie Ye,Zhengwei Zhou,Yue Wang
4-Chlorophenol (4-CP) is a persistent and highly toxic pollutant commonly found in groundwater. However, its efficient degradation remains challenging due to the rapid agglomeration of conventional zero-valent iron (ZVI) nanoparticles, their narrow pH operating range, and the environmental risks associated with synthetic chelating agents. To address these limitations, this study presents a rationally designed catalytic system integrating cyclodextrin polymer (CDP)-supported bimetallic Cu-Fe nanoparticles (Cu-Fe-CDP) with citric acid (CA) as a green complexing agent. The porous CDP matrix effectively mitigates nanoparticle agglomeration and provides abundant active sites, while the Fe-Cu bimetallic coupling accelerates electron transfer and iron corrosion. Critically, CA acts as a biocompatible ligand that sustains Fe(II)/Fe(III) redox cycling, expands the effective pH range, and enhances hydroxyl radical (·OH) generation. The system achieves 92.13% degradation of 4-CP within 80 min at pH 9.0 and nearly complete removal at pH values between 3.0 and 7.0. Mechanistic studies, including electron paramagnetic resonance (EPR) spectroscopy and radical quenching tests, confirm the dominance of ·OH radicals (82.67% inhibition by TBA) and the essential role of surface Fe(II)/Fe(III) cycling. The catalyst exhibits excellent reusability, broad-spectrum activity toward multiple pollutants, and sustained performance in real water matrices and long-term column tests with minimal metal leaching. This work demonstrates a chemically robust strategy for chlorophenol remediation using green citric acid and biodegradable CDP without exogenous oxidant addition, showing promise for further development toward practical applications.
✓ 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）