MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·168
·
IF 5.4
Ma Ya,Zheng Yuqing,Wang Jiahao,Bai Liwei,Liu Jizhong,Bai Weidong,Zhao Xiaojuan
Cu-metal organic framework (MOF) derived porous carbon (Cu/Cu 2 O@C 700 ) derived from Cu-based MOF was prepared by one-step pyrolysis, and then used together with nitrogen-doped longan shell carbon (NCs) to establish a new electrochemical sensor for the rapid detection of enrofloxacin (ENR) by differential pulse voltammetry. The materials and the preparation process of electrochemical sensor were characterized. Results have shown that Cu/Cu 2 O@C 700 exhibited abundant porous structures, high surface area, and numerous active sites, which significantly improved response sensitivity. NCs is a porous carbon material which possess high specific surface area and make the diffusion and transport of electrolyte ions easier. Under optimal conditions, the peak current of ENR exhibits favorable linear relationships with the concentration within a range 0.1–1000 ng mL − 1 , and the detection limit is 7.73 × 10 − 3 ng mL −1 (S/ N = 3). The sensor has good selectivity, stability and repeatability, and good recovery (93.90 ~ 104.0%, RSD<4%) for the detection of ENR in fresh fish and shrimp. Compared with LC-MS/MS, it also shows competitive accuracy, which is of great significance in ensuring the safety of aquatic products. Graphical abstract
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高影响因子
Nature Communications
·
2026
·
IF 18.1
Lu Chengxing,Li Boyu,Li Qun,Liu Shuaishuai,Cheng Jinnuo,Yan Jiahao,Wang Zemin,Liu Tong,Wang Jinkai,Zhao Qing
Sluggish kinetics and shuttle effects hinder high-energy rechargeable sodium-chalcogen batteries, requiring nanostructured positive electrodes with excess conductive additives. Here, we show that an acidic binder-induced corrosion strategy enables activity in bulk S/Se/Te positive electrodes. Carboxylic acid-rich binders create an acidic microenvironment (pH≈3) during processing, triggering spontaneous formation of copper chalcogenide interlayers on Cu current collectors. These interlayers reconstruct into active Cu 2 X (X = S/Se/Te) catalysts during cycling. Using Na-Se batteries, experimental and DFT analyses confirm Cu 2 Se reduces the liquid-solid conversion barrier by ~24.1% and accelerates polyselenides conversion. Polar groups in the binders enhance chemisorption, reducing the shuttling effect. Consequently, bulk Se with alginic acid binder achieves 96% theoretical utilization at 0.1 A g ‒1 , rate capability of 508 mAh g ‒1 at 20 A g ‒1 , stable cyclability at 5 A g ‒1 over 16,000 cycles, and low-temperature operation at 0.1 A g ‒1 (94% capacity retention at −20 °C). The strategy of transforming binders into active interface modulators provides a generalizable approach for other chalcogens, enabling practical and host-free rechargeable metal batteries with chalcogen positive electrodes.
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Catalysts
·
2026
·Vol. 16
·期 5
·479
·
IF 4.5
Shaomeng Huang,Feijian Jing,Liping Wang,Yiqing Xu,Jiawen Sheng,Qiongqiong He
The lithium battery recycling industry is developing rapidly, and the rapid oxidation and degradation of dimethyl carbonate (DMC) in the wastewater generated by this industry is of crucial importance. In this study, Fe and Cu dopants were controlled and the C-SiO2framework with porous structures was constructed to synthesize FeCuC-SiO2and C-SiO2catalysts. The former could achieve 91.65% of DMC degradation within 60 min through peroxymonosulfate (PMS) activation, and the degradation rate was increased to 4.44 times compared to C-SiO2without Fe and Cu doping. And under optimized conditions, a DMC degradation rate of 90.57% can be achieved within 10 min by FeCuC-SiO2. The catalyst has good stability and the catalytic activity can be maintained during reuse process for five times with over 70% of DMC degradation rate, 58.9% of mineralization rate, and a relatively low amount of metal leaching. Moreover, the degradation rate can still remain above 70% with the existence of impurity anions, demonstrating a strong salt resistance. Hydroxyl radicals (OH•), sulfate radicals (SO4•−), and1O2were found to dominant the reaction in the FeCuC-SiO2-PMS system, which were involved in both free radical and non-free radical pathways and led to excellent catalytic oxidation performance and environmental adaptability. In general, a novel design for a Fenton-like catalyst was presented, providing a theoretical basis for the improvement of oxidation efficiency and the regulation of reaction pathways in Fenton-like reactions.
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TOPICS IN CATALYSIS
·
2026
·
IF 3.7
Mu Yifang,Li Yanhong,Huang Aisheng
Direct synthesis of dimethyl ether (DME) from carbon dioxide (CO 2 ) hydrogenation by using bifunctional catalysts has attracted much attention in view of CO 2 conversion and utilization. However, direct CO 2 hydrogenation to DME is challenging due to kinetics and thermodynamic limitations, thus requiring the development of more effective bifunctional catalysts. In this work, metal-organic framework (MOF) Cu/Zn-BTC derived CuZnO catalyst is developed and combined with HZSM-5 for direct CO 2 hydrogenation to DME. The influence of Si/Al ratio of HZSM-5, mass ratio of CuZnO and HZSM-5, reaction temperature, reaction pressure and space velocity on the catalytic performances of the CuZnO/HZSM-5 bifunctional catalysts is systematically examined in a fixed-bed reactor. Attributing to a high activity of the Cu/Zn-BTC derived CuZnO catalyst for CO 2 hydrogenation to methanol, the CuZnO/HZSM-5 bifunctional catalysts display high CO 2 conversion and DME selectivity. Under a mild reaction condition (225 °C and 3.0 MPa), a high CO 2 conversion of 54.3% and DME selectivity of 79.5% are obtained for the bifunctional catalysts, which outperform the state-of-the-art catalysts for CO 2 hydrogenation to DME. Further, after 100 h of reaction, the bifunctional catalyst can still maintain a high CO 2 conversion rate (~ 52.6%) and DME selectivity (~ 77.3%), which suggests promising prospects for industrial applications.
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Journal of the Taiwan Institute of Chemical Engineers
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2026
·
IF 6.9
Abrar Hussain,Ndumiso Vukile Mdlovu,Kuen-Song Lin,Chi-Jung Chang,Amin Hussain
Background The conversion of CO 2 into value-added fuels and chemicals remains one of the major challenges in catalysis and sustainable energy research. Developing efficient catalysts for CO₂ hydrogenation to methanol and dimethyl ether (DME) is essential for reducing greenhouse gas emissions and promoting carbon recycling. Methods In this work, a Zr-modified CuO–ZnO–Al₂O₃ (CZZA) catalyst was synthesized via a co-precipitation method for CO 2 hydrogenation. The catalyst systems “CZZA/HZSM-5-L” and “CZZA/com-HZSM-5” represent Zr-modified CZZA physically integrated with loofah-templated and commercial HZSM-5 (Si/Al = 25), respectively. A bio-HZSM-5 catalyst was also prepared using loofah sponge and rice husks as dual biotemplates to promote methanol dehydration into DME. The novelty lies in (i) the dual-biomass templating strategy (silica-rich rice husk vs. low-silica loofah) to achieve macro– meso –micro hierarchies while retaining MFI crystallinity, and (ii) Zr-promotion of the Cu–ZnO–Al₂O₃ matrix to enhance Cu⁺/Cu²⁺ and Cu–Zn interfacial sites, enabling efficient one-pass CO₂ → MeOH → DME conversion at 280 °C and 30 bar. Significant findings Zr incorporation significantly improved the structural and electronic properties of the CZZA catalyst, leading to enhanced surface area, active site dispersion, and CuO–ZnO interfacial synergy. Among all tested catalysts, the CZZA/HZSM-5-L bifunctional catalyst achieved the highest DME yield (13.2 %), DME selectivity (58.6 %), and CO₂ conversion (22.5 %) at 280 °C and 30 bar. An economic evaluation of 5- and 10-ton-per-day (TPD) DME production using refinery waste CO₂ showed payback periods of 2.98 and 2.44 years, respectively. Sensitivity analysis (±20 % variation in H 2 and DME prices) confirmed the payback remained below 4 years, demonstrating the technical and economic viability of the developed Power-to-DME process.
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ACS Omega
·
2026
·
IF 5.2
Yili Li,Jinxin Fang,Xinyi Du,Liqiang Deng,Xiaoya Mo,Haijun Huang,Weiguo Cao
Herbal medicines are particularly vulnerable to contamination by polycyclic aromatic hydrocarbons (PAHs) due to their relatively long growth cycles and multistep processing. This contamination may compromise the efficacy and safety of the prepared herbal slices. The current work innovatively synthesized a hierarchical composite of MXene@Cu-BTC/PPy carbon with MWCNTs@MoS2 (MCuP350/MWCNTs@MoS2) through a sequential in situ growth approach. The material was characterized by using Field Emission Scanning Electron Microscopy (FE-SEM), High-Resolution Transmission Electron Microscopy (HR-TEM), X-ray Photoelectron Spectroscopy (XPS), X-ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. The electrochemical sensor was prepared based on the MCuP350/MWCNTs@MoS2 composite, which exhibited excellent electrocatalytic activity, displaying good linear responses to both anthracene (ANT) and phenanthrene (PHE). The detection limits of the presented sensor were 0.604 μM (ANT) and 0.240 μM (PHE), respectively. In commonly used herbal medicine of licorice, the effectiveness of the developed sensor for detecting ANT and PHE was validated by the standard addition method, with satisfactory recoveries of 100.36%–104.75% and 97.43%–104.44%, respectively. Additionally, the sensor exhibits high selectivity against the potential interfering substances existing in licorice. These results confirm the feasibility of directly detecting PAHs in licorice via the developed sensor without the need for complex sample pretreatment.
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JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2026
·
IF 1.7
Guo Yuanyuan,Wang Ying,Shan Haiwei,Zhang Lieyu,Wang Hongqiang
The treatment of uranium-containing wastewater faces major challenges, including complex compositions, strong interference from coexisting ions, poor selectivity of conventional methods, and rapid blockage of electrode active sites. Here, we utilize expired flour as a low-cost biomass carbon/nitrogen source and copper oxalate as a copper precursor to prepare a biomass-derived carbon-supported copper single-atom catalyst (Cu-SAs/BC). This catalyst is then composited with g-C 3 N 4 at an optimal mass ratio of 2:3 and loaded onto carbon felt to construct a Cu-SAs/BC-g-C 3 N 4 photoelectrocatalytic electrode. The electrode achieves a uranium removal efficiency of 99.4% within 5 min under optimal conditions (total loading 13 mg, pH 4–6), and exhibits rapid removal across a wide initial concentration range of 5–100 mg/L. The distribution coefficient for U(VI) reaches 6.5 × 10 4 mL/g, significantly surpassing those of coexisting interfering ions (Al, Zn, Fe, Mn, Ca). Complete uranium removal from actual uranium mining seepage water is achieved within 20 min. Mechanistic studies confirm that phosphate groups on the electrode surface specifically chelate and coordinate with UO 2 2+ enabling rapid and targeted enrichment of uranyl ions. The UO 2 2+ ions then migrate to Cu-N x active sites, accept electrons, and undergo reduction to form U(Ⅳ), producing UO 2 precipitates that automatically detach under square-wave potential for efficient separation. This study provides a low-cost, sustainable biomass-derived single-atom catalytic material and a technological pathway for uranium recovery from complex radioactive wastewater.
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Catalysts
·
2026
·Vol. 16
·期 7
·628
·
IF 4.5
Shiqi Ma,Haoyang Li,Yuchen Huang,Kai Sun,Yuejia Huang,Yarong Fang,Yan Du
Selective catalytic oxidation of ammonia (NH3-SCO) is a promising technology for ammonia abatement. Cu/CeO2catalysts have attracted extensive attention because of their strong metal–support interaction and favorable redox properties. However, their practical application is still limited by insufficient low-temperature catalytic activity and unsatisfactory control of by-product formation. Herein, phosphate-functionalized Cu/CeO2catalysts were fabricated to regulate surface acidity and oxygen species behavior, thereby promoting low-temperature NH3-SCO activity. The optimal Acid-Cu/CeO2catalyst achieved 90% NH3conversion at 260 °C, corresponding to a 192 °C decrease in T90compared with pristine Cu/CeO2(452 °C). Kinetic analysis showed that the apparent activation energy decreased from 125.78 to 84.70 kJ mol−1after phosphoric acid modification. In addition, Acid-Cu/CeO2maintained relatively high N2selectivity and lower NOxselectivity over the tested temperature range, indicating that phosphate modification suppresses the deep oxidation of NH3to NOxby-products. Structural and surface characterization results demonstrated that Cu species remained highly dispersed on CeO2after modification, while surface phosphate species modified the local electronic environment and redistributed oxygen species. O 1s XPS and O2-TPD results revealed that phosphate modification decreased the static surface adsorbed/defect-related oxygen fraction but improved the accessibility and mobility of labile surface/subsurface or weakly bound lattice oxygen species. Py-IR and DRIFTS results further showed that phosphate modification increased Brønsted/Lewis acidity, enhanced NH3adsorption and N-H activation, and facilitated the formation and subsequent consumption of NHx/-NHO-related intermediates under reaction conditions. This work provides insights into phosphate-mediated regulation of surface acidity and oxygen mobility and offers a strategy for designing efficient low-temperature Cu/CeO2-based NH3-SCO catalysts.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 6
·124949
·
IF 7.5
Jiamin Wang,Tengjuan Ma,Yulong Ma,Jinpeng Wei,Haiyan Yan,Yonggang Sun
In recent years, developing highly active non-noble metal catalysts for biomass hydrodeoxygenation (HDO) to achieve value-added conversion has attracted significant attention. However, major challenges remain in catalyst efficiency, stability, and the precise control of reaction pathways.In this study, a synergistic Ni-W-Cu mixed metal oxide (MMO) catalyst was prepared from LDH precursors via a stepwise "ion exchange-active site introduction" strategy. Under optimized conditions (240 ℃, 2.5 MPa H 2 , 2.5 h), the catalyst achieved complete cellulose conversion with 72% ethylene glycol selectivity. Even after five reuse cycles, it retained 95.4% conversion and 62% selectivity. Characterization demonstrated that appropriate Cu loading promoted Ni-Cu alloying and modulated Ni electronic structure, which induced abundant W 6 + /W 4+ species and oxygen vacancies (O V ). In this architecture, W 6+ provides Lewis acidity, while W 4+ couples tightly with O V , thereby synergistically enhancing the catalyst's hydrogenation capability and bond-cleavage ability. Density functional theory (DFT) calculations reveal that the strong interaction between W and Cu constructs highly efficient adsorption sites, enabling the precise catalysis of C-O bond scission. These findings suggest that tailoring the W-Cu interplay offers a viable strategy for directing product selectivity. By engineering a stable, multifunctional catalyst for biomass conversion, this study provides a new strategy for constructing high-performance HDO catalysts.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Xiaobing Yao,Yuan Ruan,Ting Rao,Fangyou Lin,Wenbin Zhang
Prostate cancer is a prevalent immune-cold malignancy in which hypoxia and glutathione (GSH) enrichment hinder redox-dependent therapies and cuproptosis. A hyaluronic-acid–coated copper–manganese Prussian blue nanomedicine (Cu/Mn-PB@HA) was developed to remodel the tumor microenvironment (TME) and enhance mitochondria-associated cuproptosis. The multivalent Cu/Mn centers enable catalase-like O 2 generation, GSH-oxidase–like depletion of GSH, and Fenton-like ·OH production, which together enhance chemodynamic therapy (CDT) and create a favorable window for cuproptosis. In acidic and GSH-rich conditions, copper valence cycling initiates cuproptosis, whereas released Mn 2+ enhances CDT and activates the cGAS–STING pathway, thereby promoting dendritic-cell maturation and cytotoxic T-cell responses. The HA shell enables CD44-mediated enrichment, improving tumor accumulation without compromising biosafety. In vitro , the platform elevates ROS, induces mitochondrial depolarization, downregulates HIF-1α, and modulates cuproptosis-related proteins. Concurrently, immunogenic cell-death markers are elevated together with cGAS–STING signaling. In vivo , preferential tumor accumulation and significant tumor inhibition are achieved with favorable serum biochemistry and hepatic/renal histology. By integrating “oxygenation–desensitization–ROS” chemistry with Mn 2+ - enhanced immune activation, Cu/Mn-PB@HA provides a comprehensive strategy for treating immune-cold solid tumors and serves as a versatile platform for theranostic development.
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RSC Advances
·
2026
·Vol. 16
·期 21
·19213-19224
·
IF 6.1
Jingdong Nong,Zhonghua Sun,Weiyou Zhou,Zhong Wu,Junfeng Qian,Qun Chen,Mingyang He
A series of Cu-modified Ni–Al2O3 catalysts with various Cu/Ni ratios (xCu/Ni–Al2O3) were prepared, and systematically characterized using BET, XRD, SEM, H2-TPR, H2-TPD, TG, and XPS. The catalyst exhibited excellent catalytic performance in the selective hydrogenation of N,N-dimethylaniline to N,N-dimethylcyclohexylamine in a continuous fixed-bed reactor. When the Cu/Ni molar ratio was 0.1, the active components were highly dispersed on the Al2O3 support, which possessed a high specific surface area and well-developed porous structure. Furthermore, the catalyst demonstrated strong hydrogen desorption capacity and enhanced thermal stability. Synergistic electronic interactions between Ni and Cu improved the adsorption and activation of both reactant and H2 molecules. The incorporation of Cu near the Ni active sites effectively modulated the selectivity toward the desired product N,N-dimethylcyclohexylamine. Under the optimal reaction conditions: H2 pressure of 5 MPa, reaction temperature of 130 °C, liquid hourly space velocity 0.1 h−1 and hydrogen-amine volume ratio of 5500 : 1, the 0.1Cu/Ni–Al2O3 catalyst achieved superior performance, with a N,N-dimethylaniline conversion rate of 99.5% and a selectivity for N,N-dimethylcyclohexylamine of 97.6%.
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高影响因子
Catalysts
·
2023
·Vol. 13
·期 2
·450
·
IF 3.9
Muhammad Naeem Younis,Zhiheng Ren,Chunshan Li,Erqiang Wang,Jie Li
The advancing effects of various alkali and alkaline earth metals (inclusive of K, Ca, and Sr) modified Cu/SiO2catalysts, prepared with a modified precipitation-gel method, were investigated for the production of ethanol via hydrogenation of methyl acetate. Our results showed that Sr-doped catalysts exhibited the best and most consistent results during catalytic tests. A series of techniques, including X-ray diffraction technique, Raman spectroscopy, N2adsorption/desorption, N2O titration method, FTIR spectroscopy, and H2temperature, programmed desorption and reduction (TPD and TPR), and X-ray Photoelectron Spectroscopy, which was used to check the detailed characterization of Sr modification in the catalyst and its structural impacts on the properties of the catalyst. These results demonstrated that the addition of 5%Sr could strengthen the intrinsic stability of the catalyst by formulating the appropriate ratio of Cu+/(Cu0+ Cu+) to facilitate catalytic outcome improvement. The addition of 5%Sr-30%Cu/SiO2under the most favorable conditions, resulting in the peak conversion of MA (95%) and ethanol selectivity (96%), indicates its magnificent catalytic stabilizing effects. Furthermore, the best performing catalyst was compared and tested under various conditions (LHSV and temperatures) and a 300 h long life run.Keywords:hydrogenation;methyl acetate;ethanol;strontium
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危险品化学品经营许可证（带存储）