APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Xue Wang,Guo Li,Hao Huang,Hongxiang Jin,Yangyingzhi Liu,Fan Yang,Rong He,Wenkun Zhu
Electrochemical uranium extraction in real nuclear wastewater containing ultrahigh concentration of F - is challenging, which requires the development of extraction material with highly exposed active sites for dominant uranyl complex species. Herein, we implant open active pairs of Cu + -SO x on an open flower-structured Cu-S-O nanosheets by pulse electro-oxidation, enabling the efficient electrochemical uranium extraction in real nuclear wastewater with F - . In this case, the open structure ensures the sufficient contact with electrolyte, together with the open active pairs selective binding with the dominant UO 2 F x species. In simulated nuclear wastewater, the open Cu-S-O nanosheets with open active pairs possessed an optimum extraction efficiency of 98.6 % in 300 min, which was 1.2-time larger than that of CuS nanosheets. Moreover, the Cu-S-O nanosheets maintained the remarkable efficiency regardless of the variation of pH, the interfering ions, and the ratio of U/F. The mechanistic study revealed an evolution of UO 2 F x adsorption, uranium reduction, and UO 2.34 crystallization. In real acidic nuclear wastewater from the fabrication of fuel element, the Cu-S-O nanosheets electrochemical extracted 95.6 % of the uranium, with a facile collection of the uranium oxide product.
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CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2025
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IF 1.3
Danping Tian,Ruipeng Hao,Yanzi Zhang,Wanyu Xie,Pei Zhang,Wenbo Lu
A novel electrochemical sensing platform was developed based on copper-based metal-organic framework (Cu-MOF) microcapsules synthesized via a Pickering emulsion templating approach, where carbon nanoparticles used as solid emulsifiers to enhance electrode interfacial interactions and material conductivity. This design synergistically combines the superior catalytic activity of Cu-MOF with the conductive carbon matrix. The Cu-MOF microcapsules were applied in the modification of a glassy carbon electrode to obtain an electrochemical sensor for simultaneous detection of dopamine and paracetamol. This sensor showed the good sensing performance with a broad linearity range (2–1600 μM for dopamine and 2–6500 μM for paracetamol) and low detection limits (1.69 μM for dopamine and 1.81 μM for paracetamol at S/N = 3). This platform also demonstrated excellent reproducibility (RSD < 3%) and selectivity against common interferents, highlighting its potential for practical applications in real sample detection.
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Molecular Catalysis
·
2024
·
IF 3.9
Hao Qin,Hui Wan,Guofeng Guan
Single atom catalysts have been recently reported as the efficient catalysts for hydroisomerization compared to the conventional nanoparticle catalyst. Despite the fascinating advantage in enhancing the metal activity or reducing the catalyst cost, the long-term stability of the single atom catalyst seemed not that satisfactory, especially when reacting under atmospheric pressure. Herein, Pt single atom catalysts were combined with Cu nanoparticles by different means to explore a new way to improve the catalytic performance. Cu nanoparticles were located away from Pt sites to form a binary catalyst, or acted as the support of Pt atoms to form a single atom alloy (SAA) catalyst. With the binary catalyst Pt 1 –0.1Cu@CS, the conversion of the n -heptane after time on stream of 50 h increased to 70.3 %, higher than Pt 1 @CS (47.3 %). Besides, excessive Cu nanoparticles in the binary catalyst were found rather harmful to the catalysis instead. However, the SAA catalyst Pt 1 Cu@SAPO-11 showed a poor activity in hydroisomerization compared to Pt 1 @CS, indicating that the alloy structure should go against the activation of reactant. The roles of Pt atoms and Cu nanoparticles in different catalysts were discussed in detail. The reaction mechanism of hydroisomerization was refined with the different functions of the dual metal sites. This work might be instructive for the design of single atom catalysts combined with metal nanoparticles.
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ELECTROCHIMICA ACTA
·
2026
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IF 5.8
Zizheng Fan,Dong Zhao,Qunshou Wang,Ling Chang,Liang Zhang,Junjie Yan,Haiyan Du,Mingyang Zheng,Wenxiang Wang,Wenli Pei
Pt-based high-entropy intermetallic (HEI) nanocatalysts have attracted widespread attention due to their promising catalytic performance. However, synthesis of HEI nanoparticles with fine size and highly ordered structure faces significant challenges. Herein, we employed Cu as a bridging element to successfully synthesize ultra-fine (5.23 nm), highly ordered Pt 4 FeCoNiCu-HEI nanoparticles. The moderate reduction potential of Cu facilitates uniform co-reduction, controlling nanoparticle growth. The low surface energy of Cu promotes its migration to the particle surface during high-temperature annealing, creating lattice vacancies that significantly lower the ordering energy barrier. The resulting nanocatalyst exhibits enhanced alkaline hydrogen evolution reaction (HER) performance, achieving low overpotentials of 15.8 mV and 96.8 mV at current densities of 10 mA cm -2 and 100 mA cm -2 , respectively – approximately half those of commercial Pt/C (36.2 mV and 206.2 mV). The nanocatalyst demonstrates outstanding stability, maintaining its performance after 10,000 CV cycles and 30 hours of chronopotentiometry testing. Density functional theory (DFT) calculations reveal that lattice distortion and multi-element doping synergistically lower the d-band center of Pt active sites, optimizing hydrogen adsorption free energy. Additionally, the transition metal constituents significantly reduce the energy barrier for the water dissociation step. This work presents a novel strategy for designing high-performance HEI nanocatalysts combining small size, high ordering, and optimized electronic structure. Download: Download high-res image (299KB) Download: Download full-size image
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2026
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IF 5.7
Van-Hien Pham,Nguyen Quang Tu Le,Bich-Ngoc Duong,Tran Duy Tap,Ngoc-Quyen Tran,Van-Phuc Dinh
Electron beam (EB) irradiation successfully shifted ETS-10 zeolite from a microporous to a mesoporous framework. • XRD and SEM confirmed crystalline framework and morphology remained stable under EB radiation up to 1000 kGy. • 1000 kGy dose expanded pore size to 8 nm and increased the specific surface area to 333 m 2 /g. • Modified mesoporous structure improved ion diffusion, yielding high capacities of 878.16 mg/g for Pb(II) and 181.69 mg/g for Cu(II). • Adsorption behaviour followed the Sips model, indicating a hybrid multilayer-to-monolayer transition on a heterogeneous surface. ETS-10 zeolite is known for its superior adsorption properties and high ion-exchange capacity, making it suitable for applications in adsorption. While the pristine ETS-10 framework possesses inherent acidic sites and a unique crystalline structure, its performance is often limited by its purely microporous nature. This study investigated the modification of ETS-10 using electron beam (EB) irradiation to enhance its capacity for removing Pb(II) and Cu(II) ions from aqueous solutions. Our results demonstrated that EB irradiation was a highly effective method for inducing a structural transition from microporous to mesoporous without compromising the structure of ETS-10 zeolite. Under EB irradiation dose of 1000 kGy, the specific surface area of ETS-10 increased to 333 m 2 /g, the pore size expanded to 8 nm, and the adsorption reached 878.16 mg/g for Pb(II) and 181.69 mg/g for Cu(II). The adsorption data for both pristine and irradiated samples were best described by the Sips isotherm model, suggesting a hybrid adsorption behaviour on a heterogeneous surface that transitions from multilayer at low concentrations to monolayer at higher concentrations. Treating titanosilicate ETS-10 with 1000 kGy electron beam (EB) irradiation significantly improved its cyclic reusability across five consecutive adsorption-desorption runs. These findings highlight the potential of EB irradiation as a powerful tool for tailoring the porosity of titanosilicate for advanced environmental remediation. Download: Download high-res image (127KB) Download: Download full-size image
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2026
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IF 7.1
Ziqin Ming,Haiqiang Liu,Qingshuo Geng,Shaoying Shi,Peng Wang,Ri Qiu,Yibo Ouyang
Copper metal is prone to corrosion in aggressive environments, which poses a significant challenge to the long-term reliability. Herein, we report a self-healing slippery anticorrosion coating constructed on copper substrate. First, ZIF-8 with an ordered porous architecture was grown in situ by electrodeposition and used as a micro/nanoscale lubricant reservoir. ZIF-8 film was subsequently modified with thiol molecules to lower the surface energy for realizing superhydrophobicity. Finally, dimethyl silicone oil was infused into the thiolated ZIF-8 framework to form a ZIF-8-based slippery liquid-infused porous surface (SLIPS). Electrochemical measurements reveal that |Z| 0.01 Hz is 4.01 × 10 8 Ω·cm 2 . After being immersed in NaCl solution for 336 h, the SLIPS preserves |Z| 0.01 Hz close to 10 7 Ω·cm 2 . Even after pronounced mechanical scratching, |Z| 0.01Hz still remains high value. Anti-icing tests further revealed a low ice-adhesion strength of 113 ± 2 kPa, nearly one-sixth that of untreated copper (628 ± 7 kPa). These results demonstrate that the ZIF-8-based SLIPS provides high corrosion resistance, self-healing capability, and anti-icing performance, offering a robust barrier for long-term protection of copper-based materials in harsh corrosive environments.
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APPLIED SURFACE SCIENCE
·
2026
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IF 6.6
Nguyen Ngoc Huyen,Ngo Xuan Dinh,Pham Thi Tuyet Nhung,Ong Van Hoang,Tran Van Tan,Nguyen Duc Toan,De Pham-Cong,Pham Duc Thang,Anh-Tuan Le
Tunable cation distribution in spinel MCo2O4 enhances surface redox activity. • Microwave-assisted hydrothermal yields ZCO nanosheets and CCO nanorods with defects. • Oxygen vacancies and mixed cations boost interfacial charge transfer kinetics. • CCO/SPE shows high sensitivity and low LOD for Carbendazim detection. • Strong Carbendazim adsorption on spinel surfaces confirmed by experiment and theory. Spinel cobaltites MCo 2 O 4 (M is a divalent metal ion) nanomaterials have emerged as promising electrocatalysts for electrochemical sensing owing to their tunable cation distribution and redox-active metal centers. In this work, ZnCo 2 O 4 (ZCO) nanosheets and CuCo 2 O 4 (CCO) nanorods were prepared using a simple microwave-assisted hydrothermal method and subsequently employed to modify screen-printed electrodes (SPEs) for carbendazim (CBZ) detection. Structural analysis revealed distinct cation arrangements within the spinel lattice, particularly CCO exhibited mixed Cu/Co occupancy and abundant oxygen vacancies. Both modified electrodes significantly enhanced the electrochemical oxidation of CBZ compared with bare SPE, primarily due to the catalytic activity of the Co 3+ /Co 2+ redox couple. Notably, the CCO/SPE demonstrated superior sensing performance, arising from the synergistic effects of Cu 2+ /Cu + redox activity, high defect density, and one-dimensional morphology that promoted charge transfer and mass diffusion. The CCO/SPE sensor delivered promising analytical performance, featuring two linear ranges (0.1–10 and 10–500 µM), a detection limit of 0.07 µM, and a sensitivity of 5.97 µA µM −1 cm −2 . Combined experimental and theoretical analyses suggest strong CBZ adsorption on the MCo 2 O 4 spinel surface, highlighting spinel oxides as efficient electrocatalysts for CBZ pesticide sensing. Download: Download high-res image (241KB) Download: Download full-size image
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CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Jiahao Wang,Qiliang Gao,Chao Li,Xiujuan Gao,Jian Gong,Faen Song,Junfeng Zhang,Yizhuo Han,Qingde Zhang
Direct synthesis of acrylic acid (AA) from methanol and acetic acid is promising for the high-value utilization of coal-based chemicals. However, this direct synthesis faces challenges due to limited catalyst functionality or insufficient synergistic effects among multiple active sites. Herein, we constructed a series of bifunctional catalysts (CuO-NSCs) by incorporating Cu into NASICON material for direct synthesis of AA. A total selectivity of 96.0% to AA, methyl acrylate (MA), and methyl acetate was achieved over a 2.5 wt% CuO-NSC catalyst, with the 56.3% selectivity of AA+MA, approximately 23% higher than the one ever reported (33%). Our research revealed that NASICON substrate promoted the formation of more Cu + species, which are crucial redox active sites for methanol dehydrogenation into formaldehyde; furthermore, the appropriate introduction of Cu somewhat regulated surficial acid-base properties, specifically increasing the density of medium-strength acidic and basic sites that are essential for the aldolization of acetic acid and formaldehyde. Apparently, the superior activity of the catalyst was attributed to good synergistic effects between the redox sites and acid-base sites.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Ming Zhang,Guoli Fan,Liyuan Yuan,Feng Li
Bioethanol upgrading to higher alcohols (C4–10–OH) involves several sequential reaction steps occurring at multiple different active sites. Therefore, precisely engineering heterogeneous catalysts with appropriate local chemical structures of active sites and spatial environments is highly desired for efficient ethanol tandem conversion. Herein, we constructed a novel Cu-based catalyst featuring atomically dispersed Cu sites confined in a hierarchical silicalite-1@La2O3@silicalite-1 architecture, where single Cu atoms were confined in the micropores of surface silicalite-1 (S-1) zeolite nanoislands dispersed on the outer La2O3 layer encapsulating a hollow S-1 zeolite core. By modulating the content of Cu and La species, such a constructed multihierarchical Cu@S-1@La2O3@S-1 catalyst exhibited excellent performance in ethanol conversion to higher alcohols, along with an impressively high ethanol conversion of 74.9% and C4–10–OH selectivity of 85.0%, as well as an unprecedentedly high production rate of higher alcohols (10.575 mol·gCu–1·h–1) at 275 °C, far exceeding those over state-of-the-art Cu-based catalysts. It was elucidated that surface single-atom Cu sites first notably promoted the adsorption and activation of ethanol and thus initiated its dehydrogenation to produce acetaldehyde, and subsequently, acetaldehyde intermediates migrated to the outer La2O3 layer featuring abundant medium-strength basic and acidic sites, thereby facilitating the condensation of acetaldehydes and their further dehydration. This work provides an innovative approach for rationally designing high-performance supported Cu catalysts with a spatiotemporal decoupling structure applied in advanced heterogeneous tandem catalytic processes through the design of site-specific confinement within hierarchical structures.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 28
·12928-12941
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IF 7.6
Mehrizi Mohammad,Zhou Li,Lv Yuze,Zhang Yi,Gao Xiu,Zhang Zhenzhou,Liu Wenqi,Tu Weifeng,Han Yi-Fan
The reverse water-gas shift (RWGS) reaction is widely regarded as a platform reaction for the conversion of CO 2 into value-added products. In this study, Fe-based catalysts modified with Cu and K were systematically investigated to elucidate the roles of metal promoters in regulating RWGS performance. The results demonstrate that a K-promoted Fe–Cu(2/3)/Al 2 O 3 catalyst exhibits enhanced CO 2 conversion together with nearly 100% selectivity toward CO. A combination of ex situ and in situ characterization techniques reveals that the introduction of Cu can enhance CO 2 conversion by modifying the surface structure and redox properties of Fe species. Subsequent K promotion also alters the surface reaction pathway by favoring the carboxylate-related route while suppressing the accumulation of formate species, which further suppresses methane formation and improves CO selectivity. These findings highlight the critical role of Cu–K synergy in tuning catalyst structure and reaction pathways for efficient RWGS reactions.
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ACS Applied Optical Materials
·
2026
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IF 3.4
Shichao Rao,Wentao Niu,Zhongwei Man,Xiulin Xie,Zhe Yin,Yue Qin,Shuaibing Wang,Ouyang Lin,Aiwei Tang
The advancement of environmentally benign I–III–VI colloidal quantum dots (QDs) has established a promising materials platform to replace cadmium-based counterparts. However, in practical device architectures, especially blue-emitting devices, abundant surface nonradiative recombination centers and imbalanced carrier injection often lead to suboptimal device performance, thereby hindering their deployment in display technologies. Herein, we employ a zinc iodide (ZnI2) post-treatment for the Cu–Ga–Zn–S (CGZS) QDs film strategy, effectively passivating surface defects and nonradiative sites, thereby enhancing device performance. The treated QDs facilitate the formation of an interface dipole, which effectively elevates the overall energy levels of the QDs while simultaneously reducing the hole injection barrier, leading to an enhanced hole injection efficiency. Working in concert, these effects facilitate balanced carrier injection and optimize exciton recombination, thereby boosting the device efficiency and operational stability. Consequently, the peak external quantum efficiency (EQE) exhibits a favorable improvement, increasing from 1.01% in the pristine device to 1.90% after treatment. This work offers an effective approach to achieving balanced carrier injection in quantum-dot light-emitting diodes (QLEDs) and establishes a solid foundation for the development of high-performance, cadmium-free, blue-emitting QLEDs.
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ACS Catalysis
·
2026
·
IF 13.6
Qiliang Liu,Wenxing Yang
Recently, an intense Raman peak at approximately 520–544 cm–1 (briefly named as *530 in this study) has been widely observed and discussed during in situ spectroscopic studies of electrochemical CO2 or CO reduction reaction (CO(2)RR). Several mechanisms were proposed to explain the nature of this peak, most notably attributing it to Cu–OHad or CuOx(OH)y, which was then utilized as a key spectroscopic indicator in various mechanistic discussions. Herein, by systematic isotopic-labeled spectroscopic studies, we show that the nature of the *530 peak may not be the previously proposed species, but more likely a surface species containing (C, O) in equilibrium with inert bridging-type adsorbed CO (*CObridge). Both the formation of *530 and *CObridge is shown to be associated with the spontaneous reconstruction of Cu. The *CObridge and *530 Raman modes share the same adsorption sites and can interconvert into each other via the variation of electrochemical potentials. Finally, the appearance of both peaks is shown to signalize a deteriorated C2+ products performance of CO2RR and CORR. These results update the current understandings of the role of *530 for CO(2)RR. It also highlights that the emerging-recognized electrocatalyst reconstruction phenomenon can be accompanied by the formation of diverse surface adsorbates, casting challenges, and necessitating rigorous spectroscopic studies for better mechanistic understanding.
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