APPLIED CATALYSIS A-GENERAL
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2026
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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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Materials Today Physics
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2026
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IF 9.3
Zi-long Zhang,Yu-ji Wu,Zhuo-ming Xu,Chun-lu Wu,Ning Chen,Rafique Azam,Mazhar Hussain Danish,Fu Li,Guang-xing Liang,Yue-Xing Chen,Zhuang-Hao Zheng
Re doping coordinates electrical and thermal transport in Cu/Br co-doped SnSe 2 . • Re secondary phases and associated lattice distortion enhance phonon scattering. • The 0.75% Re-doped sample achieves a peak z T of ∼0.78 at 773 K. Transition-metal doping is considered as an effective strategy to improve the thermoelectric performance of SnSe 2 -based semiconductors, since it can simultaneously optimize electronic transport and phonon scattering. Herein, Re was introduced into the Sn-rich Cu/Br co-doped SnSe 2 (SCSB) system. Microstructural characterizations reveal partial Re incorporation into the SnSe 2 lattice together with Re precipitates, while first-principles calculations using a hypothetical Re-for-Cu substitution configuration show a reduced band gap and enhanced DOS accumulation around the band edges, suggesting favorable electronic-structure modulation. Finally, the 0.75% Re-doped SCSB sample achieves a peak zT of ∼0.78 at 773 K, reaching a competitive level among reported n-type SnSe 2 -based thermoelectric materials prepared by solid-state reaction and spark plasma sintering procedure. This work demonstrates that transition-metal doping is an effective and facile strategy for the synergistic optimization of electrical and thermal transport in SnSe 2 -based systems. Download: Download high-res image (418KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
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2026
·Vol. 18
·期 32
·44080-44092
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IF 7.8
Sun Mingze,Zhu Dongwei,Lou Yan,Yin Chunhao,Liang Mengxin,Song Ao,Niu Mengmeng,Li Tiezhu,Huang Yibing,Luo Quan
Pesticide residues with diverse toxicities and synergistic effects demand rapid, multiplexed discrimination methods beyond conventional single-analyte assays. Here, we report a machine-learning-enhanced three-channel colorimetric sensor array based on Cu-Pt bimetallic nanozymes for multi-class pesticide fingerprint recognition. The single CuPtBN receptor integrates oxidase-, laccase-, and superoxide dismutase-like activities, generating three orthogonal optical response channels that capture differential inhibition and promotion effects from structurally similar pesticides. By coupling these multidimensional signals with “classification-regression” dual-loop machine learning models, the platform achieves concentration-independent qualitative identification and precise quantitative prediction, with 100% classification accuracy for nine representative pesticides and reliable predictive capability for nonlinear-response analytes. In blind tests and real agricultural samples, the system accurately identified pesticide species with prediction errors below 5% and recoveries of 85−105%. This work establishes a simplified yet information-rich multichannel nanozyme sensing strategy, highlighting its promise for high-throughput food safety screening and intelligent agrochemical monitoring.
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高影响因子
ACS Applied Energy Materials
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2026
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IF 5.5
Yu Huan,Li Haoran,Sun Shichao,Wang Xin,Chen Zhongwei
Rechargeable aqueous Zn metal batteries have emerged as compelling options for grid-scale energy storage applications, benefiting from a favorable combination of economic viability, operational safety, and excellent rate performance. The lifespan and Coulombic efficiency (CE) of Zn metal anodes (ZMAs) are constrained by dendrite growth and side reactions. Herein, we report a freestanding host for ZMAs based on N-doped thorn-like carbon fibers derived from a covalent organic framework (COF) and embedded with Cu nanoparticles (COF-NCF@Cu). The 3D macroporous architecture with thorn-like COF-derived N-doped carbon nanoarrays contributes to reduced current density and effectively mitigates electrode volume variation throughout cycling. Furthermore, the zincophilic Cu nanoparticles embedded in the N-doped carbon matrix provide homogeneous nucleation sites that significantly lower the overpotential for zinc nucleation, thereby promoting subsequent uniform zinc deposition. Accordingly, the COF-NCF@Cu host delivers exceptional reversibility, affording stable Zn plating/stripping for over 2800 h at 10 mA cm –2 , and the corresponding full cell with a COF-NCF@Cu-Zn anode sustains 6000 cycles with negligible capacity decay.
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MOLECULES
·
2026
·Vol. 31
·期 8
·1354
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IF 5.1
Wang Zhou,Tianyun Du,Chunqian Xu,Xiuxun Han
Cs3Cu2I5single crystals are regarded as promising next-generation scintillators due to their large Stokes shift and low self-absorption characteristics. However, the cost-effective solution growth method faces critical challenges: the instability of colloidal precursors in solutions and the severe oxidation of Cu+during crystal growth. This study innovatively introduces yttrium chloride (YCl3) as a dual-functional additive to address both issues simultaneously. The hydrolysis of YCl3creates a controlled acidic environment, effectively suppressing the oxidation of Cu+; meanwhile, it enhances the stability of colloidal precursors by significantly increasing their surface charge and narrowing the particle size distribution. These synergistic effects enable the rapid growth (approximately 100 h) of near-centimeter-sized Cs3Cu2I5single crystals with high crystallinity, without the need for inert gas protection. The optimized crystals exhibit exceptional performance: a photoluminescence quantum yield (PLQY) of 93.22% ± 0.47%, a scintillation decay time of 210.04 ns, and a light yield of ~738.14 pe/MeV. This YCl3-mediated growth strategy establishes an efficient approach for the solution-based synthesis of high-quality Cs3Cu2I5single crystals, holding great significance for advancing high-sensitivity, environment-stable radiation detection applications such as medical diagnostics and nuclear safety monitoring.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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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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CHEMICAL ENGINEERING JOURNAL
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2026
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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
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2026
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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
·
2026
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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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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xugang Rong,Zhenguo Pang,Yutao Wang,Baiquan Chen,Peijin Liu,Quan Zhu,Wei He
Although graphitic carbon nitride (g-C 3 N 4 ) is a promising two-dimensional material with good thermal conductivity, its wide bandgap and rapid charge recombination limit its direct application in photothermal conversion. In this study, an in-situ doping strategy was employed to introduce copper into the intrinsic vacancies of g-C 3 N 4 , fabricating a surface-porous 2D Cu-doped material (g-C 3 N 4 @Cu). Microstructural and spectroscopic analyses reveal that atomically dispersed Cu via Cu-N bonds significantly broadens the visible-light absorption band via the ligand-to-metal charge transfer (LMCT) effect. This mechanism enables highly efficient absorption and photothermal conversion under blue light (450 nm). This novel photothermal sensitizer was then uniformly immobilized onto nitrocellulose (NC) via a solution-based approach, forming g-C 3 N 4 @Cu/NC energetic microspheres. This integrated design not only enhances interfacial adhesion but also curtails the thermal diffusion path from the photosensitizer to the NC matrix, establishing a synergistic photothermal-thermocatalytic mechanism. Consequently, the composite g-C 3 N 4 @Cu/NC achieves a photothermal conversion efficiency of over 37%. Furthermore, its laser ignition delay time is significantly reduced by approximately 30 times compared to the blank control group, demonstrating an extremely low ignition threshold. Ultimately, this study provides fundamental insights into metal-doped g-C 3 N 4 systems and offers an effective material-design approach for integrating photosensitive and energetic materials for highly controllable optical-to-thermal responses.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Liu Gechi,Lin Jian
Rechargeable zinc-air batteries (ZABs) have attracted considerable attention owing to their high energy density and cost-effectiveness. However, the sluggish kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) at the air cathode remain significant challenges, necessitating the development of efficient bifunctional electrocatalysts. Herein, waste ACQ-treated wood was utilized as a sustainable precursor to fabricate a Cu-doped porous biochar catalyst via a two-step pyrolysis and KOH activation strategy. During the activation process, Cu species from the ACQ preservative were converted into Cu/Cu 2 O/CuO nanoparticles that uniformly dispersed within the hierarchical porous carbon framework, while simultaneously introducing abundant defects and edge sites into the carbon skeleton. The optimized catalyst (KAWB-12, activated for 12 h) demonstrated remarkable bifunctional catalytic performance, delivering an ORR half-wave potential (E 1/2 ) of 0.85 V that surpasses commercial Pt/C and an OER overpotential of 389 mV at 10 mA cm −2 comparable to RuO 2 . When assembled as the air cathode in a liquid ZABs, KAWB-12 exhibited an open-circuit voltage of 1.47 V, a high peak power density of 133.83 mW cm −2 , a specific capacity of 776.53 mAh g −1 , and stable cycling performance about 348 h at 10 mA cm −2 , surpassing the Pt/C-based battery. Consequently, this work demonstrates a sustainable strategy for transforming waste ACQ-treated wood into high-performance bifunctional electrocatalysts, offering a scalable approach for developing cost-effective ZAB catalyst materials.
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