APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Zhipeng Pei,Jiacheng Li,Yitingyu Zhou,Yuhao Zhao,Wenxian Wei,Fei He,Gang Zhou
Cu@MoS 2 simultaneously enables NO 3 adsorption and *H supply. • Cu@MoS 2 -2 exhibits excellent structural stability and consistent catalytic performance. • Under light irradiation, Cu@MoS 2 -2 generates abundant high-energy hot electrons. • Cu@MoS 2 -2 achieves 94% FE and 0.526 mmol h −1 cm −2 NH 3 yield at − 0.5 V vs. RHE. Electrochemical nitrate (NO 3 − ) reduction (NO 3 RR) to ammonia (NH 3 ) is a sustainable strategy for converting nitrate-contaminated wastewater into valuable resources. However, the process involves a complex proton-coupled electron transfer (PCET) that requires eight electrons and nine protons. Herein, the localized surface plasmon resonance (LSPR) arising from Cu nanoparticles anchored on MoS 2 nanosheet arrays (Cu@MoS 2 ) is harnessed to regulate electron dynamics and enhance active hydrogen (*H) availability for NO 3 RR. Under simulated sun irradiation, the optimized Cu@MoS 2 heterostructure delivers a stable NH 3 evolution rate of 0.526 mmol h −1 cm −2 with a Faradaic efficiency (FE) of 94.0% at − 0.5 V, which is about 7.2 and 12 times higher than bare MoS 2 (0.073 mmol h −1 cm −2 ) and Cu (0.0438 mmol h −1 cm −2 ), respectively. This work demonstrates the capability of plasmonic cocatalysts to convert supplementary photon flux into multiple catalytic driving forces, opening a new avenue toward boosting catalytic activity through direct utilization of free solar energy. Download: Download high-res image (205KB) Download: Download full-size image
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2026
·
IF 6
Wang Haixia,Sun Yilei,Liu Chuang,Meng Zeda D.,Oh Won-Chun
A series of graphene-modified copper–metal–organic framework composites (G-Cu-MOF-0.3, G-Cu-MOF-0.5, G-Cu-MOF-1) were fabricated via a solvothermal method. Structural characterizations verified that graphene was successfully composited without damaging the Cu-MOF crystalline framework, among the four materials, G-Cu-MOF-0.5 exhibits the largest specific surface area and pore size. Electrochemical results showed that G-Cu-MOF-0.5 displayed the best CO₂ electroreduction performance, with a current density of − 11 mA cm⁻², a double-layer capacitance (Cdl) of 4.97 mF cm⁻² and a Tafel slope value of 36.5 mV dec⁻¹. At − 1.5 V vs. RHE, the total Faradaic efficiency for CH₄ and CO reached 24% with stable operation over 12 h. Graphene modification significantly improves the conductivity, active site density, and structural stability of Cu-MOF, realizing efficient and controllable CO 2 conversion to C1 products. The hydrogen evolution reaction (HER) remains the dominant side reaction, and the Faradaic efficiency toward CH 4 is still moderate, leaving room for further selectivity optimization.This work provides a feasible strategy for designing MOF–carbon composites for electrocatalytic CO₂ reduction to methane.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jie Chen,Haifei Huan,Zitong Zhu,Yufeng Qu,Yan Ji,Menghao Wu,Qiuyang Zhang,Changjiang Pan
A natural hydrogel coating confers multifunctionality to polyurethane biointerfaces. • The synergy of CMCS and AgNPs endowed robust, long-lasting antibacterial action. • NO catalytically released by Cu²⁺ enabled superior pro-endothelialization performance. Despite its favorable mechanical properties, the clinical application of polyurethane (PU) in cardiovascular implants is severely limited by surface hydrophobicity, poor hemocompatibility, and insufficient antibacterial and pro-endothelialization functions. To overcome these limitations, we report a robust natural hydrogel coating (PU-Gel/Cu/Ag) with integrated anticoagulant and antibacterial functionalities, fabricated through the initial deposition of a polydopamine (PDA) covalent anchoring layer on polyurethane, followed by the grafting of a carboxymethyl chitosan (CMCS)/sodium alginate (SA) composite co-loaded with copper ions (Cu²⁺) and silver nanoparticles (AgNPs). A substantial decrease in water contact angle was observed for the coated PU, confirming that the coating markedly improved surface hydrophilicity. In addition, a substantial reduction in hemolysis ratio and fibrinogen adsorption was achieved with the coating, along with potent inhibition of platelet adhesion and activation, which together underscore its outstanding anticoagulant properties. Moreover, cell assays confirmed that the coating not only significantly enhanced endothelial cell (EC) attachment, expansion, and VEGF/NO expression, but also dramatically suppressed smooth muscle cell (SMC) adhesion and proliferation, highlighting its excellent pro-endothelialization and anti-intimal hyperplasia performance. Owing to the intrinsic cationic antibacterial property of carboxymethyl chitosan, combined with the synergistic action of AgNPs, the as-prepared coating demonstrated potent and sustained antimicrobial action that effectively suppressed both Gram-positive S. aureus and Gram-negative E. coli. The coating-incorporated Cu²⁺ acted as a durable catalyst that continuously drove NO production from endogenous donors, thereby synergistically augmenting both anticoagulation and pro-endothelialization. This study establishes a new paradigm for the design of multicomponent synergistic coatings, in which the coexistence of Cu²⁺ and AgNPs within a natural hydrogel matrix enables the synergistic regulation of surface wettability, catalytic NO release, and multi-target antibacterial action. This integrated approach fundamentally overcomes the limitations of previously reported single- or dual-functional coatings, offering a broadly applicable and translatable strategy for surface engineering of cardiovascular implant materials. Download: Download high-res image (228KB) Download: Download full-size image
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Wang Hongsheng,Zeng Yue,Lyu Shuai,Xiao Ping,Hadizadeh Mohammad Hassan,Wang Shan,Zhu Junjiang
Cu−Co bimetallic catalysts have demonstrated considerable potential for CO 2 hydrogenation to C 2 + alcohols. However, their practical application remains constrained by excessive CH 4 formation arising from the uncontrolled reduction of Co species under reaction conditions. Herein, we report a semi-encapsulated catalyst architecture constructed through a lattice-mismatching strategy. The lattice mismatch between hexagonal CoO (h-CoO) and ZnO is only 0.18%, whereas that between Cu 2 O and ZnO reaches 31.4%. When ZnO serves as the seed crystal, Cu 2 O preferentially nucleates and grows into nanoparticles on the ZnO surface, while h-CoO undergoes epitaxial growth on the exposed ZnO regions, forming a semi-encapsulated configuration in which Cu 2 O nanoparticles are partially confined by an h-CoO overlayer. The strong lattice matching between h-CoO and ZnO stabilizes Co species in an oxidized state under reaction conditions, thereby suppressing the formation of metallic Co and CH 4 production. Meanwhile, the confinement effect imposed by the h-CoO overlayer effectively restricts Cu migration, preserving the Cu−Co interfacial sites that are critical for C−C coupling. As a result, the optimized catalyst achieves a C 2 + alcohol selectivity of 63.7% at 300 ° C, with an ethanol selectivity of 30.0%, and exhibits no noticeable deactivation over 200 h of continuous operation. This work demonstrates that lattice-matching-directed interfacial engineering represents an effective strategy for simultaneously regulating active-phase stability and metal dispersion, offering new insights into the rational design of catalysts for selective CO 2 hydrogenation to C 2 + alcohols.
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Inorganics
·
2026
·Vol. 14
·期 9
·237
·
IF 3.4
Qi Guo,Pan Hou,Jingjie Cao,Hui Liu,Ge Tian
The selective photocatalytic reduction of O2to H2O2is an attractive route for sustainable H2O2synthesis, yet its efficiency is often limited by the sluggish charge separation and insufficient selectivity of the two-electron oxygen reduction reaction. Here, we develop a conductive 2D Cu3(HHTP)2metal–organic framework (MOF) in which Cu2+sites serve as dynamic redox centers to regulate interfacial electron transfer and O2activation. Upon photoexcitation, photogenerated electrons are preferentially transferred to Cu centers, inducing reversible reconstruction of the local Cu coordination environment. Benefiting from the extended π-conjugated framework and strong interlayer electronic coupling, the accumulated electrons can delocalize over the 2D sheets, facilitating charge separation and suppressing electron–hole recombination. Spectroscopic and theoretical investigations further reveal that the dynamically reconstructed Cu sites promote O2adsorption and activation through electron donation from Cu d orbitals to O2antibonding states, thereby stabilizing the O2−intermediate and favoring the two-electron reduction pathway toward H2O2. As a result, the Cu3(HHTP)2photocatalyst achieves an H2O2evolution rate of 3910 μmol g−1h−1under visible-light irradiation. These findings demonstrate that dynamically regulated Cu electronic structures provide an effective strategy for coupling charge-carrier management with selective O2activation, offering a rational approach to the design of conductive 2D photocatalysts for efficient H2O2photosynthesis.
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高影响因子
INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 35
·20411-20420
·
IF 4.6
Qin Mingxin,Ye Yuanyuan,Zhang Mengjie,Li Zhiming,Chen Yang,Yao Fanglei,Chen Ziheng,Wu Qikang,Hu Zhi,Yue Sisi,Niu Weichao,Li Feng,Zhang Cheng,Wang Jin
Electrochemical CO 2 reduction reaction (CO 2 RR) enables sustainable conversion of CO 2 into
high-value
fuels and chemicals, yet precise selectivity control toward methane
(CH 4 ) and multicarbon (C 2+ ) products remains
difficult. Herein, we develop a cyclic voltammetry (CV)-triggered
electrochemical reconstruction strategy to modulate the CO 2 RR selectivity of Cu-LDH-derived catalysts. Tailoring the CV potential
window and cycle number effectively tunes the catalyst microstructure
and copper (Cu) valence state: narrow potential windows with limited
cycles produce grain-boundary-rich Cu particles with low-valence sites,
which promote *CO accumulation and C–C coupling to yield a
high C 2+ Faradaic efficiency (FE) of 83.3% at 400 mA cm –2 . In comparison, expanded potential windows with prolonged
cycling induce the formation of nanoclusters with abundant high-valence
Cu sites, which suppress C–C coupling and favor the sequential
deep hydrogenation of adsorbed *CO intermediates, achieving a CH 4 FE of 64.7% at 300 mA cm –2 . Ex situ characterizations and in situ spectroscopic
analyses reveal that CV-driven dissolution–redeposition dominates
the evolution of particle size, grain boundaries, and Cu valence,
thereby governing the CO 2 RR reaction pathways. This work
establishes a facile electrochemical reconstruction strategy for programmable
modulation of CO 2 RR product selectivity.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiamin Wang,Fei Liu,Yanqiu Shi,Yizhou Wang,Shangyan Zhou,Xiaodan Wang
CuAl 2 O 4 -derived ZnO/Cu catalyst is constructed via reduction-exsolution and H 2 -SMSI • Precise prereduction control creates rich and active ZnO x /Cu interfacial sites • ZnO x /Cu interface promotes H 2 activation, m-HCOO ⁎ pathway and suppresses RWGS • Superior methanol performance originates from enhanced ZnO x /Cu interfacial synergy • The STY of methanol reaches to 525.8 mg CH₃OH ·h −1 ·g cat −1 and selectivity is close to 75.8% Constructing highly exposed Cu/ZnO interfaces represents a crucial strategy for achieving efficient CO 2 hydrogenation to methanol. In this work, CuAl 2 O 4 spinel was employed as the precursor, and an inverse catalyst (oxide/metal, which is a reverse structure to the traditional metal/oxide catalyst) featuring abundant ZnO x /Cu interfacial sites was obtained by combining reduction-exsolution with a hydrogen-induced strong metal–support interaction (SMSI) strategy. Under the reaction conditions of 240 °C and 3.0 MPa, the optimal ZnO/CuAl 2 O 4 –500 exhibits significantly higher methanol selectivity (75.8%) and space-time yield (525.8 mg CH₃OH ·h −1 ·g cat −1 ) compared to the ZnO/CuAl 2 O 4 with negligible ZnO x /Cu interfacial sites. Multiple characterizations combined with theoretical calculations reveal that the strong electronic interaction at the ZnO x /Cu interfacial sites induces the formation of Cu + species and oxygen vacancy (O v )-rich ZnO x . This markedly enhances H 2 activation and spillover, promotes the generation of highly active monodentate formate (m-HCOO ⁎ ) intermediates, and lowers the energy barrier for methanol formation. Concurrently, the interface suppresses the reverse water–gas shift (RWGS) pathway on Cu 0 sites, thereby improving methanol selectivity. This study presents a controllable synthetic strategy for constructing high-performance inverse ZnO x /Cu interfacial sites, providing new insights for the development of efficient catalysts for CO₂ hydrogenation to methanol. In this work, CuAl 2 O 4 spinel was employed as the precursor, and an inverse catalyst featuring abundant ZnO x /Cu interfacial sites was obtained by combining reduction-exsolution with a hydrogen-induced strong metal–support interaction (SMSI) strategy. Under the reaction conditions of 240 °C and 3.0 MPa, the optimal ZnO/CuAl 2 O 4 –500 exhibits significantly higher methanol selectivity (75.8%) and space-time yield (525.8 mg CH₃OH ·h −1 ·g cat −1 ) compared to the ZnO/CuAl 2 O 4 with negligible ZnO x /Cu interfacial sites. Multiple characterizations combined with theoretical calculations reveal that the strong electronic interaction at the ZnO x /Cu interfacial sites induces the formation of Cu + species and oxygen vacancy (Oᵥ)-rich ZnO x . This markedly enhances H 2 activation and spillover, promotes the generation of highly active monodentate formate (m-HCOO ⁎ ) intermediates, and lowers the energy barrier for methanol formation. Concurrently, the interface suppresses the reverse water–gas shift (RWGS) pathway on Cu 0 sites, thereby improving methanol selectivity. Download: Download high-res image (127KB) Download: Download full-size image
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Nanomaterials
·
2026
·Vol. 16
·期 10
·571
·
IF 4.8
Ruo-Zhou Li,Mengchen Xu,Yiming Zhong,Yuhong Xia,Dongyang Lu,Zehua Wang,Ke Qu,Ying Yu,Jing Yan
The expansion of paper-based and wearable microwave electronics demands conductors that are highly conductive, finely patterned, mechanically robust, and compatible with low-cost, biodegradable substrates. This study reports a laser-scribing strategy for high-performance copper–liquid metal (Cu–LM) conductors on paper based on laser sintering of Cu–LM composite particles, with an auxiliary adhesive transfer step to facilitate integration on flexible substrates. Laser-induced reactive sintering creates a network wherein sintered liquid metal and CuGa2acts as a conductive bridge, interconnecting the dispersed Cu particles. This provides efficient electron transport pathways, achieving a high conductivity of 4.2 × 106S/m under optimal laser conditions, surpassing that of pure eutectic gallium–indium (EGaIn) alloys. The self-healing nature of LM enables exceptional mechanical flexibility and stable electrical performance under severe deformation. The utility of this platform is demonstrated by a miniaturized microwave liquid level sensor that provides multi-parameter water-level detection and sensor calibration. These results establish laser-scribed Cu–LM on paper as a low-cost and disposable option for high-performance microwave sensors and flexible wireless electronics.
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高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Huaqi Chai,Junsheng Wang,Yuanhai Lin,Yuncong Wang,Bingjie Chai,Mingming Xu
The fabrication of surface-enhanced Raman scattering (SERS) substrates with high hotspot density and superior sensitivity is a critical bottleneck limiting their practical applications. In this paper, a three-dimensional (3D) SERS substrate based on high-density Cu@Ag bimetallic heterostructured nanoflowers (Cu@Ag NF) was constructed using citric acid etching-assisted electrochemical deposition (ED) technology and high-vacuum electron beam evaporation coating technology, which provides an efficient and low-cost preparation process for the SERS substrate. The performance of a Cu@Ag 3D-SERS substrate was evaluated systematically using crystal violet (CV) as the probe molecule. This substrate exhibited a limit of detection (LOD) as low as 10–12 M (pM), and the signal intensities at its five characteristic peaks were more than 10 times higher than those of the Ag@ITO substrate, indicating its high sensitivity. In addition, the substrate demonstrated excellent uniformity (relative standard deviation (RSDs) < 11% for 15 randomly tested points) and long-term stability (no significant signal attenuation after 2 weeks of storage at room temperature). This work provides valuable guidance for the facile, scalable, and low-cost fabrication of high-performance SERS substrates, and presents a reliable strategy for the detection of trace organic pollutants in practical scenarios.
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高影响因子
ACS Omega
·
2026
·
IF 5.2
Zai Dong,Xichang Wu,Tianhua Yu,Chaochan Li,Heng Zhang,Jie Wang,Armin Rezayan,Anping Wang
This study aims to improve the removal efficiency of heavy metal ions from wastewater. We utilized agricultural residues derived from Camellia oleifera shell and combined them with zeolitic imidazolate frameworks (ZIFs) precursors for synergistic modification. By introducing active components such as Zn and Co in situ using chemical reagents, followed by pyrolysis, co-carbonization, and KOH activation treatments, we prepared nine types of functionalized biochar (BCX-T). Their structural characteristics and adsorption performance toward Cu(II) and Cd(II) were systematically characterized. The results showed that BC8-500 exhibited an adsorption capacity of 31.61 mg/g for Cu(II), a 2.1-fold increase compared to unmodified biochar; BC9-500 exhibited an adsorption capacity of 111.43 mg/g for Cd(II), a 6.4-fold increase. The adsorption process was primarily driven by chemical adsorption and multilayer adsorption. The removal of Cu(II) by BC8-500 was mainly achieved through complexation, whereas the removal of Cd(II) by BC9-500 was primarily achieved through CdCO3 precipitation. This study provides a theoretical basis for the effective utilization of agricultural and forestry residues, as well as for the mitigation and management of environmental pollution.
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高影响因子
Nature Energy
·
2026
·
IF 70.1
Zhang Zhenguo,Zhang Qi,Li Wen,Liu Wen,Zhang Jialin,Zhang Jin,Wang Haining,Xiang Yan,Lu Shanfu
High-temperature polymer electrolyte membrane fuel cells offer inherent impurity tolerance and simplified thermal/water management. However, conventional phosphoric acid-doped membranes must be relatively thick (typically >50 μm) to counteract H 3 PO 4 -induced mechanical degradation, leading to ohmic losses that limit fuel cell performance. Here we report a 20-μm-thin, mechanically robust phosphoric acid-doped membrane incorporating dynamic Cu-ion crosslinking for high-power-density high-temperature polymer electrolyte membrane fuel cells. The dynamic Cu-polymer coordination establishes dynamic crosslinking networks that provide exceptional toughness and extensibility, alongside spontaneous self-healing capability. Simultaneously, the Cu ions improve H 3 PO 4 retention and proton dissociation through electrostatic interactions and polarization of O–H bonds in H 3 PO 4 molecules. The resulting thin membranes exhibit minimal ohmic resistance (0.06 Ω cm 2 ) while maintaining low H 2 crossover current density (0.95 mA cm −2 ). Fuel cells incorporating this membrane achieved a peak power density of 3.08 W cm −2 at 200 °C (H 2 /O 2 ), with negligible degradation over 503 h at 1.0 A cm −2 and 160 °C.
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高影响因子
JOURNAL OF FLUORESCENCE
·
2026
·
IF 3.4
Xiaoli Wu,Jiajia Du,Dandan Zhang,Jiayi Chen,Xi Yang,Xiaonan Liu
Iron(III) and copper(II) ions are ubiquitous in the environment, posing potential risks to the environment and human health, which urgently demands rapid detection methods. In this study, a ratiometric fluorescent probe was developed by integrating biomass-based carbon dots with rhodamine B (RhB) for the rapid and accurate detection of Fe³⁺ and Cu²⁺. Under normal conditions, the strong coordination ability of Fe³⁺ and Cu²⁺ enables them to rapidly occupy the active sites on the surface of carbon dots (CDs), resulting in rapid fluorescence changes. RhB provides a stable reference signal and achieves self-calibrated dual-emission output, thereby reducing matrix and environmental interferences. To address the coexistence of Fe³⁺ and Cu²⁺ in practical detection, ethylenediaminetetraacetic acid (EDTA) was introduced as a selective masking agent, which preferentially forms a stable complex with Fe³⁺. This reduces the signal interference of Fe³⁺ in low-concentration systems and realizes highly selective detection of Cu²⁺. In the detection of Cu²⁺ in actual water samples, the probe exhibits high sensitivity (4.91 µM) and favorable accuracy with recoveries ranging from 97.3% to 99.5%, demonstrating strong reliability in complex samples. This study not only provides a green and sensitive method for Cu²⁺ detection, but also presents an effective strategy for resolving specific detection issues in complex matrices using classical masking agents.
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高影响因子
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