Nature Communications
·
2025
·Vol. 16
·期 1
·1-15
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IF 15.7
Sun Xichen,Zhu Pengqi,Tang Liuyan,Wang Pengfei,Li Ningning,Wang Qing,Lou Yan-Ru,Zhang Yuezhou,Li Peng
To tackle elevated blood glucose, multidrug-resistant (MDR) bacterial infections, and persistent inflammation in diabetic wounds, we present a therapeutic strategy that employs a photoswitch-controlled catalytic cascade reaction, utilizing a photocatalytic material engineered through the synergistic regulation of nitrogen vacancies and single-atom embedding. Under visible light illumination, the N vacancy exist in g-C 3 N 4 (CN) significantly enhances photocatalytic glucose oxidation to regulate the hyperglycemia condition at diabetic wound sites, and the atomically dispersed Cu promotes the generation of •OH and •O 2 – to efficiently eliminate MDR bacteria ( > 99.9%). Under dark conditions, excess ROS are scavenged by Cu/CN, reducing inflammation of wounds and promoting polarization of M2 macrophages. Serum biochemical and vital organs histopathological analyses after 14 days of treatment confirm the biosafety profile of Cu/CN. This photoswitchable cascade reaction effectively treats MDR bacterial-infected diabetic wounds in male mice, highlighting its potential for antibiotic-free therapy with promising clinical translation applications.
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PubMed
高影响因子
Green Energy & Environment
·
2025
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IF 14.6
Ruifeng Wang,Yuchang Liu,Yandong Li,Yafen Kong,Qizhi Chen,Shuangliang Zhao
Efficiency of C-C bond coupling in highly inert CO 2 is relatively low, which severely limits its efficient conversion to acetate. Here, we successfully developed a highly stable NF@CoMn 2 O 4 @Cu 2 O-Ag bimetallic active site catalyst by anchoring Ag on the Cu 2 O surface. In this catalyst, the Co 3+ /Mn 3+ -Mn 4+ removes excess electrons from the Cu + sites via strong electronic interactions, preventing the reduction of Cu 2 O to metallic Cu 0 , which ensures the NF@CoMn 2 O 4 @Cu 2 O-Ag exhibits a high resistance to deactivation. The Cu + active sites of NF@CoMn 2 O 4 @Cu 2 O-Ag efficiently electroreduce CO 2 to the *CO atop intermediate, while the Ag active sites efficiently electroreduce CO 2 to the *CO bridge intermediate. The proximity of Cu + /Ag bimetallic sites shortens the distance for C-C bond coupling between the *CO atop and *CO bridge intermediates, facilitating the efficient electrocatalytic coupling of CO 2 to synthesize acetate. DFT analysis indicates that the ΔG required for C-C bond coupling on the short-distance Cu + /Ag bimetallic sites of NF@CoMn 2 O 4 @Cu 2 O-Ag is significantly lower than that of NF@CoMn 2 O 4 @Cu 2 O, enabling a high Faradaic efficiency of 64.97% for acetate production at -0.3 V vs. RHE. This study provides an effective strategy for the rational design of synergistic catalysis between heterometallic catalytic sites to efficiently achieve C-C coupling for the synthesis of C 2+ products.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Ping Liang,Jianbin Lin,Xiongcong Guan,Jie Wang,Xinxin Zhang,Xin He,Qi Feng,Chi Zhang
Self-supported nanoporous metal foils with precisely engineered architectures are promising for catalysis, sensing, and environmental remediation, yet their scalable fabrication remains challenging. Here, we present a sequence-controlled liquid gallium (Ga)-assisted alloying/dealloying strategy, integrated with thermal evaporation, to construct Ag-modified nanoporous copper (Cu) foils. By varying the Ag deposition sequence, two distinct architectures were obtained: one features Ag 3 Ga intermetallic decorations, while the other forms a continuous Ag network within the nanoporous Cu. Subsequent electrooxidation generates Cu x O nanoneedles as catalytically active sites. The architecture with dispersed Ag 3 Ga yields exceptional non-enzymatic glucose sensing with high sensitivity, low detection limit, and long-term stability. In contrast, the continuous Ag network promotes outstanding photo‑Fenton degradation of organic dyes within minutes and excellent reusability. This work demonstrates a versatile approach to spatially control noble metal distribution in nanoporous Cu foils, enabling multifunctional catalytic systems for biosensing and environmental purification.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Shuhong Liu,Zhongping Yao,Yanjing Liu,Jiankang Wang,Xiao Zhang,Ying Song,Wanqian Guo,Xiaohong Wu
Singlet oxygen ( 1 O 2 ) offers unique advantages for contaminant degradation owing to its high oxidative selectivity, long half-life, and pH-independent reactivity. However, the spin-forbidden transition between molecular oxygen (triplet state, 3 O 2 ) and 1 O 2 severely limits their interconversion under energy-free conditions. Herein, we innovatively prepared a nitrogen-doped carbon-coated copper-cobalt alloy catalyst (CuCo@NC) that hierarchically activated molecular oxygen into 1 O 2 . The optimized CuCo@NC600 demonstrated exceptional performance: achieving 96.79 %-98.91 % Norfloxacin (NOR) removal and ∼70 % mineralization within 40 min across a broad pH range of 3–11 under conditions of 1.0 g/L catalyst and 20 mg/L NOR. The catalyst exhibited remarkable versatility, degrading diverse organic pollutants (rhodamine B, tetracycline hydrochloride, etc.) with > 90 % efficiency and strong anti-interference capability against common ions and organic matter. No significant performance degradation was observed in both real wastewater and surface water systems. Radical quenching experiments confirmed 1 O 2 as the dominant reactive species generated through hierarchically activating O 2 by Cu-Co collaboration: molecular oxygen is initially activated at Cu sites, generating •O 2 – and •OH, which are then captured and converted to 1 O 2 at Co sites. The preserved catalytic stability (>70 % efficiency after 3 cycles) originated from the protective carbon matrix and self-compensating Cu + /Cu 2+ –Co 2+ /Co 3+ valence transitions. LC-MS-identified intermediates revealed three detoxification pathways. This work provided an energy-efficient and environmentally friendly strategy for 1 O 2 -dominated advanced oxidation processes, demonstrating significant potential for antibiotic-polluted water remediation.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Guifeng Tang,Qian Zhang,Na Zhang,Nan Xiang,Huajun Sun,Chuanxing Wang,Ting Wang
The development of bimetallic catalysts offers a promising alternative to monometallic systems for enhancing the selectivity and efficiency of the electrochemical CO 2 reduction reaction (CO 2 RR). However, the fundamental understanding of the synergistic interactions between constituent metals and their role in governing CO 2 RR performance remains insufficient. In this study, we employed a bimetallic Cu/Zn catalyst supported on two-dimensional nitrogen-doped carbon nanosheets (Cu/Zn@CN) to systematically investigate the correlation between structural characteristics, electronic properties, and electrocatalytic performance in CO 2 reduction. Through systematic variation of Zn incorporation, the integration of Cu and Zn within the nitrogen-doped carbon architecture was found to effectively modulate the electronic structure and metal-support interactions, which subsequently governs the binding behavior of key reaction intermediates and enhances both activity and selectivity toward value-added products. The resulting synergistic effects substantially boosted the Faradaic efficiency (FE) and production rate of ethylene and other C 2+ products. The catalyst with a Cu:Zn ratio of 6:2 (Cu 6 Zn 2 @CN) exhibited outstanding performance, achieving a C 2 H 4 FE of 51.16 % with effective suppression of the hydrogen evolution reaction. Combined experimental and density functional theory (DFT) studies revealed that Zn doping modulates the d -band center of Cu, optimizes the adsorption energy of key intermediates such as *OCCO, and reduces the energy barrier of the rate-determining C-C coupling step. The complementary electronic structure and intermediate stabilization effects synergistically contribute to the high C 2+ selectivity. This work provides deep mechanistic insights into the bimetallic cooperation in Cu-Zn electrocatalysts and offers a rational strategy for designing efficient CO 2 -to-C 2+ conversion systems.
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Journal of Cleaner Production
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2026
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IF 10.7
Shanshan Sun,Yurong He,Tianqi Tang,Siyu Hui
While semiconductor-based photocatalysis presents a promising avenue for CO 2 reduction, the application of conventional TiO 2 is restricted by its limited light absorption, short photogenerated charge carrier lifetime, and poor CO 2 adsorption capability. To overcome these constraints, we constructed multifunctional Ag/Cu-TiO 2 /graphitic-phase polyacrylonitrile (g-PAN) composites. In this system, g-PAN functions as a robust support for Ag/Cu nanoparticle-loaded TiO 2 fibers synthesized via electrospinning and heat treatment. UV–Vis NIR DRS analysis reveals synergistic light harvesting where the localized surface plasmon resonance of Ag/Cu nanoparticles extends absorption into the near-infrared and g-PAN doubles the intensity by trapping photons within nanocavities. Beyond these optical benefits, g-PAN enhances CO 2 adsorption and accelerates charge transfer. Consequently, the Ag/Cu-TiO 2 /g-PAN composite achieves a CO evolution rate of 11.82 mmol/g/h under simulated solar irradiation, representing a twice increase compared to the Ag/Cu-TiO 2 counterpart. As evidenced by Electrochemical Impedance Spectroscopy and instantaneous photocurrent response, g-PAN acts as an electronic bridge that significantly reduces the resistance to photogenerated charge migration. This study provides novel insights into designing highly efficient composite photocatalysts for sustainable CO 2 conversion, contributing to the advancement of cleaner production and green technologies.
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JOURNAL OF CATALYSIS
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2026
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IF 6
Huaibiao Wang,Tianxiu He,Churu Zhang,Yanyan Deng,Wenjun Quan,Ruoning Liu,Qingcai Zou,Chunye Chen,Yunfei He,Shaoyun Shan,Tianding Hu
Copper-based catalysts for hydroboration typically rely on air-sensitive Cu(I) species to achieve high activity, whereas Cu(II)-only systems remain largely ineffective due to their limited intrinsic reactivity. Herein, we present an intramolecular N/O competitive coordination strategy to construct a metal–organic framework (MOF) with multiple active Cu(II) sites (Cu-3,5-PyDC). This framework incorporates three distinct Cu(II) coordination environments: [Cu 2 -O 8 ], [Cu-N 2 O 2 ], and [Cu-N 3 ], which regulate the local electronic microenvironment of Cu(II) and significantly enhance its catalytic functionality. Consequently, Cu-3,5-PyDC is capable of completing the hydroboration of 25 terminal alkyne substrates within 5 min, achieving a turnover frequency up to 3046 h −1 . Combining deuterium experiments with density functional theory (DFT) calculations further reveals the synergistic interaction of multiple Cu(II) sites in the proton-hydrogen transfer pathway, which effectively lowers the reaction energy barrier. This work establishes the effectiveness of intramolecular N/O competitive coordination strategies for precisely constructing multiple active sites within MOFs, providing a rational design approach for the targeted development of multifunctional materials.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Jialong Li,Shiye Cai,C. Srinivasakannan,Tong Han,Gang Xue,Li Wang,Yaping Wang,Xinhui Duan
A hollow octahedral NiCo 2 S 4 /carbon composite was rationally constructed through precursor regulation, sulfidation, and subsequent carbonization using a Cu-MOF-derived template. Benefiting from the well-preserved hollow architecture, uniformly distributed NiCo 2 S 4 active shell, and conductive carbon framework, the optimized 3-NiCo 2 S 4 @HC sample exhibits enhanced electrochemical performance as a supercapacitor electrode. In a three-electrode system, 3-NiCo 2 S 4 @HC delivers a high specific capacity of 858.5 C·g −1 at 1 A·g −1 and retains 84.2% of its initial capacity at 30 A·g −1 . In addition, it shows excellent cycling stability with 94.27% capacity retention after 10,000 cycles at 10 A·g −1 . Kinetic analysis reveals that the charge-storage process involves both diffusion-controlled Faradaic reactions and capacitive contributions, while the hierarchical hollow porous structure facilitates electrolyte infiltration and ion/electron transport. Furthermore, an assembled 3-NiCo 2 S 4 @HC//AC hybrid supercapacitor operates stably up to 1.6 V, delivering an energy density of 54.9 Wh·kg −1 at a power density of 799.9 W·kg −1 , and retaining 84% of its initial capacitance after 10,000 cycles. This work demonstrates that the synergistic integration of hollow structural engineering and carbonization is an effective strategy for developing high-performance Ni Co sulfide-based supercapacitor electrodes.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Tanzeel Riaz Ahmad,Xin Li,Ling Jiang,Jie Jin,Xiupei Yang,Fenglin Tang
Background Hydroquinone (HQ), a widely used industrial chemical, persists in the environment and poses significant health risks, including carcinogenicity, as classified by the WHO. Existing detection methods (e.g., HPLC, GC-MS) rely on sophisticated instruments and complex procedures, limiting their practicality. Colorimetric sensors based on nanozymes offer simplicity and rapidity but often suffer from poor selectivity because of interference from structural isomers (catechol and resorcinol). The development of a high-performance nanozyme with synergistic activity and selective HQ detection remains a critical challenge. Results A bimetallic nanozyme (Cu-MOF@CoNPs) was engineered via a “ship-in-a-bottle” strategy, which successfully confined cobalt nanoparticles (Co NPs) within a porous copper–organic framework (Cu-MOF) scaffold. Characterization (SEM, XRD, FTIR, and XPS) confirmed the successful integration of Co NPs into the Cu-MOF matrix, preserving structural integrity through a pillaring effect while enhancing active site exposure. The composite exhibited superior peroxidase-like activity, with Michaelis constants ( K m ) of 0.39 mM (TMB) and 0.18 mM (H 2 O 2 ), indicating higher substrate affinity than that of natural horseradish peroxidase (HRP). Catalysis was driven by synergistic Cu–Co electron transfer, generating holes (h + ) and superoxide radicals (•O 2 − ). A “signal-off” colorimetric sensor was constructed on the basis of the HQinduced reduction of oxidized TMB (oxTMB), achieving a linear range of 0.2–12 μM, a low detection limit of 65 nM, and high selectivity for HQ over structural isomers (catechol and resorcinol) due to steric confinement and favorable redox kinetics, as verified through expanded interference studies. Practical applicability was validated in tap water, lake water, soil extracts, and cosmetic samples, with recoveries of 94–110% and relative standard deviations <3.5%. Significance The Cu-MOF@CoNPs nanozyme-based sensor provides a cost-effective, portable platform for onsite HQ detection in environmental and consumer safety monitoring. Its high sensitivity, selectivity, and stability highlight the potential of hierarchical MOF-confined bimetallic nanozymes as robust tools for reliable phenolic pollutant analysis.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2026
·
IF 5.9
Qi-qi Jing,Zhi Huang,Yan-ying Liu,Qian Zhang
This work proposed a novel mechanism linking Cu(OH) 2 to MXene material, which promotes the development of 2D-dimensional material in TC degradation. • The optimized system enhances the efficiency by generating ·O 2 − and 1 O 2 , ·OH. ·O 2 − plays a significant role in TC degradation. • The catalyst maintain 87.94% activity over 4 times recycle, outperforming existing materials. • Performance of the strategy is friendly to environment, the metabolite is CO 2 and H 2 O. Ti 3 C 2 T x has emerged as a promising electrocatalyst for environmental remediation, yet its practical application is often limited by insufficient active site exposure and poor operational stability. In this study, we developed out-of-plane Cu-functionalized Ti 3 C 2 T x nanosheets (Ti 3 C 2 Tx@Cu) decorated with Cu(OH) 2 clusters of approximately 5-30 nm in size, which significantly enhance the electrocatalytic degradation of tetracycline hydrochloride (TC). Comprehensive theoretical and experimental analyses confirm that the spontaneously anchored Cu species not only improve electrical conductivity but also markedly boost catalytic activity. The optimized Ti 3 C 2 Tx@Cu catalyst achieves complete degradation of TC within 30 min, outperforming pristine Ti 3 C 2 T x. Mechanistic investigations reveal that the introduction of Cu promotes the predominant generation of superoxide radicals (·O 2 − ), shifting the degradation pathway from a combined effect of ·OH, ·O 2 − and 1 O 2 in the pure Ti 3 C 2 T x system to a ·O 2 − dominated process in the Ti 3 C 2 Tx@Cu system. This work provides an effective strategy for enhancing MXene-based electrocatalysts and underscores their potential in addressing antibiotic contamination, thereby contributing to public health and environmental sustainability.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Bao Zhang,Baohe Xu,Haozhe Qin,Liang Cao,Xing Ou
The intrinsic poor electrical conductivity, severe dissolution of K x S y intermediates, and inferior conversion reaction reversibility extremely impede the practical application of the transition-metal chalcogenides (TMDs) anode for potassium-ion batteries (PIBs). Herein, a rationally designed Cu 9 S 5 /MoS 2 /C heterostructure hollow nanocage was synthesized with assistance from metal-organic frameworks (MOFs) precursor. During the K-storage process, the homogeneously distributed the sulfiphilic nature of Cu 0 reaction product could act as a dual-functional catalyst, not only facilitating the rapid charge transfer but also effectively anchoring (K x S y ) polysulfides, thus boosting K-storage reactions reversibility during the conversion reaction process. When applied as an anode for PIBs, the as-prepared heterostructure exhibits excellent reversible capacity and long cycle lifespan (350.5 mAh g –1 at 0.1 A g –1 and 0.04% per cycle capacity decay at 1 A g –1 after 1000 cycles). Additionally, the potassium storage mechanism is distinctly revealed by in-situ characterizations. The nanoarchitecture designing strategy for the advanced electrode in this work could provide vital guidance for relevant energy storage materials.
研究领域:
储能
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电化学
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纳米材料
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电池技术
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高影响因子
CATALYSIS TODAY
·
2020
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IF 5.825
Jinfeng Han,Caixia Liu,Qingling Liu,Shuangchun Lu,Yalian Bi,Xiaohan Wang,Mingyu Guo,Chunfeng Song,Na Ji,Xuebin Lu,Degang Ma,Zhenguo Li
Novel Al-rich OFF-CHA twin-crystal zeolite was synthesized by one-pot hydrothermal method, and applied in ammonia-selective catalytic reduction (NH 3 -SCR) after copper ion exchange. Results indicated that Cu content in Cu-OFF-CHA played a significant role in NH 3 -SCR reaction. The insufficiency of copper activity sites and the formation of CuOx were the main reasons affecting low and high temperature SCR activity of catalyst, respectively. Cu 3.1 -OFF-CHA, with the optimal copper content, demonstrated over 90 % NOx conversion and exhibited excellent N 2 selectivity in the range from 160 to 550 ℃. Further research verified that the SCR activity of Cu 3.1 -OFF-CHA maintained above 80 % in the temperature range from 180–450 °C after hydrothermal treatment 16 h. The reason might be that Cu 2+ in Cu-OFF-CHA was migrated from CHA to OFF sites after hydrothermal treatment, and Cu 2+ in OFF sites on Cu-OFF-CHA was more stable, resulting in less conversion of the active site to CuOx clusters. Cu-OFF-CHA has the potential to be applied in SCR after-treatment systems of diesel exhaust due to the excellent SCR activity and hydrothermal stability.
研究领域:
催化化学
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环境化学
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材料科学
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化学工程
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