CHEMISTRY LETTERS
·
2016
·Vol. 45
·期 9
·1051-1053
·
IF 1.55
Wang Luanjiao,Rao Pinhua,Yao Wei,Zhang Wenqi
CuSn-codoped CdS (CdS:CuSn) quantum dots (QDs) with different Cu(I) and Sn(IV) doping levels have been successfully synthesized by a simple one-pot procedure. It was found that the doping ratio of Cu(I) and Sn(IV) in CdS QDs significantly affected the photoluminescence (PL) quantum yields (QYs), Stokes shifts, and emission window of as-prepared QDs. Compared to single Cu doping, CuSn codoping further significantly improved the PL QYs of as-prepared QDs (up to 24.6%). The CdS:CuSn QDs may be used as potential emitters in the PL industry.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 19.7
Juhee Jang,Ernest Pahuyo Delmo,Yushen Liu,Guimei Liu,Yinuo Wang,Tiehuai Li,Minhua Shao
Cu-MOFs have shown great potential as electrocatalysts for selective methane production through the carbon dioxide reduction reaction (CO 2 RR). However, achieving coordination-induced tuning over the desired coordination environment of multi-functional Cu-MOFs remains a challenge, which is closely related to regulating the surface binding energy with reactants. Here we develop a modulator-assisted synthesis method for fabricating nanosized Cu-aminoterephthalic acid (Cu-NH 2 BDC) MOFs, aiming to modify the coordination geometry, which leads to the regulation of charge transfer ability. By incorporating a trace amount of 2-methylimidazole (MIm), the crystallinity of Cu-NH 2 BDC can be improved compared to traditional synthesis, which can be attributed to the influence of the coordination environment within the MOFs. The modulation of electrochemical properties, including the redox potential for the evolution of Cu active species and charge transfer resistance, resulting from additional Cu oxidation state by the amino functional groups, contributed to the enhancement of CH 4 FE (63%) and partial current density (−53 mA cm −2 ) in an H-type cell, while effectively suppressing the parasitic hydrogen evolution reaction. This modulator-assisted synthesis approach presents a promising strategy for optimizing the performance of Cu-NH 2 BDC electrocatalysts in CO 2 -to-CH 4 conversion, offering valuable insights into structural modifications and charge transfer processes involved in the reaction.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Ning Liu,Yujie Zhao,Yan Liang,Rong Tian,Siqi Wu,Bo Wang,Xi Yao,Yanping Wang,Dianming Li
As global water scarcity intensifies, interfacial evaporation emerges as a promising technology to address this challenge. However, the practical implementation of these systems is hindered by numerous factors, including water surface fluctuations and changing climatic conditions. The present paper proposes a self-floating composite membrane (PPHC) based on modified Cu foam and polyacrylonitrile (PAN) fibres for the purpose of enhancing solar interfacial evaporation. It has been demonstrated that PPHC exhibits excellent bending resistance, thereby ensuring structural integrity during real-world water surface fluctuations. The integration of a hydrophobic foam metal design with a polymer fibre network’s capillary action enables the device to achieve high thermal localization and expeditious water transportation. In the context of solar irradiation, the PPHC exhibits an evaporation rate of 1.38 kg m −2 h −1 , thereby demonstrating consistent performance even within a high-salinity environment, characterized by a salt content of 25 wt%. Outdoor testing further validates its adaptability under varying weather conditions, with a peak evaporation rate of 2.96 kg m −2 h −1 recorded. This work presents a novel approach for constructing robust, durable, and highly efficient integrated interfacial evaporators.
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2026
·
IF 7.8
Zhenfeng Li,Yifan Zhao,Zixu Wang,Jinyang Li,Chenglong Zhou,Peng He,Shuye Zhang
Oxidation susceptibility and insufficient service reliability remain major limitations for Cu-based conductive inks in flexible electronics. Here, size-tunable Cu@Ag core-shell nanoparticles were processed by millisecond intense pulsed light (IPL) sintering to establish a rapid route toward conductive and durable flexible electrodes. Comparative finite-element thermal analysis and electrical measurements establish a practical IPL processing window, while electron microscopy and complementary diffraction analysis support energy-dependent interparticle connection and localized Cu-Ag interfacial reconstruction without assuming homogeneous alloying throughout the film. The sheet resistance reaches a minimum of 0.06 Ω/sq at 5.0 J/cm2, whereas 4.5 J/cm2 is selected as the practical baseline because it provides a more favorable balance among conductivity, film integrity, environmental stability, flexibility, adhesion, and limited cumulative substrate heating. Films processed within this window maintain low resistance during damp-heat and cryogenic exposure and exhibit stable electrical behavior during repeated bending. At the device level, the 4.5 J/cm2 electrode enables a contact-separation triboelectric nanogenerators (TENG) with an open-circuit voltage of 275.45 V and a peak power density of 0.71 W/m2. In otherwise identical alternating-current electroluminescent (ACEL) devices, increasing the electrode-processing energy from 1.5 to 4.5 J/cm2 markedly increases luminance, directly linking the IPL-defined electrode state to device performance. The integrated patterned platform further enables tactile-position visual feedback. These results establish an evidence-based processing-thermal response-structure-reliability-device relationship for IPL-sintered Cu@Ag NPs flexible electrodes.
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
L.Y. Cao,S. Qiu,P. Viktoriia,Z. Chen,B. Hong,J.C. Xu,H.W. Chen,M.M. Wei,X.Q. Wang
To develop a high-performance humidity sensor, MOF-303, possessing both micro- and mesoporous structures, was selected as the host material for the sensor. SnO 2 nanoparticles were introduced via wet impregnation, and Cu(II) ions were anchored onto uncoordinated nitrogen sites of MOF-303, forming a ternary Cu(II)/SnO 2 /MOF-303 nanocomposites. The optimal sample denoted as 1-2CuSnM (with a molar ratio of Cu(II) to SnO 2 /MOF-303 of 1:2) achieved a response value of 116.98 over 11-98% RH, with response/recovery times of 16.2/6.3 s, low hysteresis (2.48% RH), and excellent 30-day stability (SD < 0.01) at room temperature. The synergy between Cu(II) and SnO 2 introduces abundant oxygen vacancies for water adsorption, while uncoordinated N sites enable proton hopping (Grotthuss mechanism) and Cu(II) dissociation enhances ionic conductivity, collectively reducing impedance. This ternary strategy is novel in combining protonic and ionic conduction pathways within a MOF framework, enabling a humidity sensor with wide range, fast response, and low hysteresis, key advancements over conventional materials.
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Catalysts
·
2026
·Vol. 16
·期 9
·806
·
IF 4.5
Yifei Wang,Ruoxin Li,Bin Jia,Jun Liu,Guojie Zhang
Low-temperature sintering flue gas contains both nitrogen oxides (NOx) and carbon monoxide (CO), requiring bifunctional catalysts for concurrent pollutant abatement. Herein, CuSmTi composite oxides with an identical nominal composition were synthesized via impregnation, mechanical grinding, and sol–gel methods to examine the effects of preparation route on their structure, surface properties, and catalytic performance in coupled NH3-SCR and CO oxidation. CuSmTi-SG exhibited the best performance, achieving >40% NOxconversion at 125 °C, complete NOxand CO conversion at 200 °C, and nearly 100% N2selectivity over 100–300 °C, with stable performance over 24 h. It possessed a higher surface area (131.4 m2g−1), pore volume (0.230 cm3g−1), and smaller TiO2crystallite size (8.5 nm) than the other catalysts. Spectroscopic analyses showed that sol–gel synthesis altered the surface electronic states of Cu and Sm species, resulting in a higher Cu+fraction and greater amounts of medium-to-strong Lewis acid sites and labile surface oxygen species. In situ DRIFTS indicated that CO oxidation proceeded predominantly via a Mars–van Krevelen mechanism over Cu+sites, whereas NH3-SCR mainly followed an Eley–Rideal pathway. CO and NH3preferentially interacted with different surface sites, resulting in limited mutual inhibition. These results demonstrate that the preparation route can modify the structure and surface chemistry of CuSmTi catalysts without changing their nominal composition, thereby affecting their performance in low-temperature NOxand CO abatement.
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Xiangchen Kong,Shijie Hong,Xuyang Dong,Panpan Jiang,Kaiyue Wang,Yuming Tian
Mild calcination preserves porous TiO 2 (B) nanosheets and tunes oxygen vacancies • Oxygen vacancies stabilize highly dispersed metallic Cu on TiO 2 (B) • Cu-Vo interfaces promote electron transfer and suppress charge recombination • Cu-TiO 2 (B)-200 reaches 7.92 mmol g -1 h -1 under AM 1.5 simulated sunlight TiO 2 (B) is a promising photocatalyst for solar-driven H 2 evolution, yet its performance is limited by rapid charge recombination and insufficient surface reduction sites. Herein, a vacancy-assisted strategy combining mild thermal treatment with in situ photodeposition is developed to construct highly dispersed metallic Cu species on TiO 2 (B) nanosheets. Calcination at 200 °C preserves the metastable TiO 2 (B) framework while generating an appropriate concentration of surface oxygen vacancies, which serve as preferential anchoring sites for Cu and promote strong electronic coupling at the Cu-TiO 2 (B) interface. Under air mass 1.5 simulated sunlight with methanol as a sacrificial agent, the optimized Cu-loaded TiO 2 (B) sample treated at 200 °C achieves an H 2 evolution rate of 7.92 mmol g -1 h -1 and retains stable activity over five consecutive cycles. Comprehensive structural and spectroscopic characterizations, together with first-principles calculations, demonstrate that oxygen-vacancy-mediated Cu anchoring strengthens metal-support electronic coupling, promotes directional charge transfer and carrier separation, and facilitates interfacial proton reduction. These results establish a mechanistic correlation among phase preservation, oxygen-vacancy regulation, Cu dispersion, and photocatalytic performance. This work provides a practical and cost-effective strategy for constructing efficient non-noble-metal interfaces on metastable oxide photocatalysts. Download: Download high-res image (204KB) Download: Download full-size image A mild defect-engineering strategy preserves the TiO 2 (B) framework while generating oxygen vacancies that stabilize highly dispersed metallic Cu species. The resulting Cu-Vo interfaces promote directional electron transfer, suppress charge recombination, and facilitate interfacial proton reduction, thereby enhancing photocatalytic H 2 evolution under AM 1.5 simulated sunlight.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Xuefei Wang,Hui Wang,Boyuan Zhang,Cheng Wang,Xiaodong Wang,Hongle An,Bingchun Xue
A novel self-floating Cu@TpMDA@CS sponge was fabricated via chemical crosslinking. • The Cu@TpMDA@CS sponge addresses the recovery challenge of traditional powdered COFs. • Synergistic adsorption mechanisms are discussed in detail. • Cu@TpMDA@CS sponge demonstrates robust stability and reusability after 10 cycles. Covalent organic frameworks (COFs) are promising adsorbents due to their large surface area and tunable pore structures, yet their practical application is constrained by poor recyclability and reusability. To address this issue, a self-floating Cu@TpMDA@CS sponge with a three-dimensional porous network structure was successfully fabricated by chemically crosslinking a copper-based COF (Cu@TpMDA) with chitosan (CS). This design not only facilitated recovery and practical applicability but also enabled the effective removal of hexafluorobisphenol A (BPAF) from aqueous environments. The physicochemical properties of Cu@TpMDA@CS were systematically characterized using SEM-EDS, BET, XPS, XRD, and FT-IR techniques. The adsorption performance for BPAF was evaluated through adsorption isotherm and kinetic studies, cyclic regeneration, and simulated real-water application experiments. The results showed that the adsorption of BPAF onto Cu@TpMDA@CS followed the Freundlich isotherm model and pseudo-second-order kinetic model, with a maximum adsorption capacity of 31.6 mg·g −1 . Notably, the Cu@TpMDA@CS sponge exhibited excellent cyclic reusability, and after 10 adsorption-desorption cycles, its removal efficiency remained at approximately 97.0% of its initial value. The underlying adsorption mechanism was attributed to the synergistic effects of pore filling, hydrogen bond, π-π stacking, and metal coordination interactions. In conclusion, the Cu@TpMDA@CS sponge integrates favorable adsorption performance, excellent chemical stability, and superior recyclability, effectively overcoming the recovery limitations of COF-based adsorbents and demonstrating great promise as a practical candidate for wastewater treatment. Download: Download high-res image (98KB) Download: Download full-size image
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jingjing Wu,Dazhi Shen,Tingjie Mao,Jiacheng Liu,Juan Wang,Xujin Zhang,Juan Ding,Yudai Huang,Xiaoqing Huang,Yunhua Li
Tuning Sn dispersion switches CO 2 RR path, challenging site-activity dogma • Low Sn dispersion density highly stabilizes *OCHO, strongly favoring it over *COOH • 89.3% formate FE at 200 mA cm −2 under flow-cell conditions surpasses prior reports • Catalyst reconstruction and reaction species are analyzed by in situ experiments Electrocatalytic CO 2 reduction to CO and formate holds significant industrial promise. Herein, we reveal that the surface density of atomically dispersed Sn on Cu lattice modulates the active-site identity from Cu to Cu Sn, thereby switching product distributions. L-Sn 1 -Cu, featuring sparse Sn coverage, achieves a CO Faradaic efficiency (FE) of 72.8% at a current density of 300 mA cm −2 . Conversely, H-Sn 1 -Cu with saturated Sn isolation attains a formate FE of 89.3% at a current density of 200 mA cm −2 . Operando spectroscopy and DFT calculations show that Sn-deficient locales expose Cu atoms to bind *COOH and favor CO formation, while Sn-congested domains create polarized Cu Sn pairs that lock *OCHO for formate synthesis. This density-dependent ensemble tuning enables switchable selectivity between CO and formate in CO 2 electroreduction at industrially relevant current densities. By precisely tuning the lattice dispersion density of single-atom Sn on Cu, this work achieves a programmable selectivity inversion from *COOH-mediated CO production on sparse Sn sites to *OCHO-stabilized formate synthesis via polarized Cu Sn ensembles at industrially relevant current densities. Download: Download high-res image (54KB) Download: Download full-size image
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Xianfeng Ma,Huiying Dai,Luyao Zhao,Xiaolan Liang,Xiuquan Xu,Xiaofeng Yu
A low-cost Cu-Mo dual-doped carbon nitride nanozyme was synthesized. • It shows excellent peroxidase-like activity via superoxide radical pathway. • A smartphone-based platform enables portable and visual D-PA detection. D-Penicillamine (D-PA), a sulfur-containing amino acid, is used to treat various diseases such as Wilson's disease, fibrotic lung disease, and cystinuria. However, excessive intake of D-PA can cause adverse effects, necessitating the development of accurate quantitative detection methods. This study aimed to establish a visual colorimetric method for D-PA detection using a synthesized Cu-Mo dual-doped carbon nitride nanomaterial ( Cu - Mo - VC - CN ). The synthesis capitalizes on the simplicity and cost-effectiveness of a one-pot thermal polymerization reaction, utilizing only inexpensive and commercially available precursors, namely copper chloride, ammonium molybdate, urea, and vitamin C. The material exhibited exceptional peroxidase-like activity, catalyzing the oxidation of TMB by H 2 O 2 via a superoxide radical pathway. The optimal reaction conditions were: temperature 30 °C, time 30 min, pH 5.5, TMB concentration 0.2 mM, and H₂O₂ concentration 0.2 mM. Steady-state kinetic analysis revealed that the Cu - Mo - VC - CN nanozyme had Michaelis-Menten constants ( K ₘ) of 0.083 mM for TMB and 0.603 mM for H 2 O 2 . Under optimal conditions, the system enabled highly sensitive D-PA quantification with a linear range of 0.5–100 μM and a detection limit of 0.45 μM. The nanozyme was successfully applied to determine D-PA content in pharmaceutical tablets with satisfactory recovery (from 97.73 to 98.27%). Furthermore, a smartphone-based testing platform was established to provide a portable and practical solution for the real-time monitoring of D-PA. This work provides both an efficient strategy for developing multi-metal-doped nanozymes and a reliable colorimetric platform for D-PA monitoring. Download: Download high-res image (279KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Honglei Chen,Chaoyue Liu,Yaohui Zhang,Shuo Wang,Guanghong Ao,Zhihong Wang
Uncontrolled Li dendrite growth is the critical bottleneck limiting practical application of Li-metal batteries (LMBs). Copper-based metal foils are the most widely used current collectors in LMBs, but they often perform poorly mainly due to low specific surface area and poor lithiophilicity. A solution-based redox-induction modification strategy is proposed for commercial Cu-Zn foils. The results show that a porous nanosheet structure is successfully fabricated on foil surfaces via a simple treatment, greatly increasing their specific surface area. Moreover, Zn in the Cu-Zn alloy spontaneously enriches on the surface during the redox process, thus significantly boosting the material’s lithiophilicity. The obtained results demonstrate that the constructed Zn-rich nanosheet surface structure can effectively suppress the growth of lithium dendrites, and the half-cell using based on the optimized Cu-Zn current collector achieves stable cycling for 370 cycles with a coulombic efficiency of 99%. For the LiFePO 4 ||Cu-Zn NS 1 h full battery, its capacity can retain 80% after 400 cycles at a 1 C discharge rate. Notably, this one-step facile redox-induced modification for Cu-Zn alloys simultaneously achieves the construction of a nanosheet structure and the regulated enrichment of Zn elements, exhibiting substantial commercial potential for the industrial-scale processing of high-performance Cu-based current collectors.
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COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
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2026
·
IF 4.4
Xiaofei Yang,Mingyue Qiao,Yan Deng,Songsong Chen,Cheng Li,Yuanke Shu,Li Jiang
Heavy metal pollution, particularly copper (Cu) and cadmium (Cd), poses a serious threat to aquatic ecosystems due to its toxicity and bioaccumulation potential. This study investigated the effects of individual and combined exposure to Cu and Cd on largemouth bass, focusing on the gut–liver axis and the TLR4/NF-κB pathway in hepatotoxicity. A total of 480 size-matched fish were randomly assigned to four groups (Control, Cu, Cd, and Cu + Cd) and exposed to sublethal concentrations of CuSO₄ (9.275 mg/L) and CdCl₂·2.5H₂O (1.15285 mg/L) for 14 days, followed by physiological, molecular, and omics analyses. Results showed that both single and combined exposures disrupted intestinal structure and barrier function, accompanied by downregulation of tight junction genes. Oxidative stress responses were tissue-specific, with increased reactive oxygen species (ROS) and MDA levels in the intestine but decreased levels in the liver, along with suppressed antioxidant enzyme activities. Inflammatory responses were activated, as indicated by elevated cytokine levels and upregulation of TLR4/MyD88/NF-κB signaling in the liver. Microbiota analysis revealed that Cd exposure increased gut microbial diversity, whereas Cu + Cd co-exposure reduced α-diversity and altered microbial composition, with increased Proteobacteria and decreased beneficial taxa such as Bacteroidota and Firmicutes. Untargeted metabolomics showed that hepatic metabolic profiles were altered, mainly affecting lipid, energy, and immune-related pathways. Overall, combined Cu + Cd exposure exerted stronger toxic effects than single exposures, inducing more severe intestinal damage, microbial dysbiosis, and metabolic disturbances. These findings highlight the critical role of the gut–liver axis in mediating heavy metal toxicity.
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PubMed
高影响因子
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