LANGMUIR
·
2026
·Vol. 42
·期 22
·15967-15977
·
IF 4.4
Zhang Li,Zhang Wenhao,Wang Zhaomeng,Fan Sining,Xia Puyue,Tang Shaolong
Porous gold materials, with advantages such as low relative
density
and high chemical stability, are widely used in biosensing, chemical
energy storage, etc. Currently, traditional methods still face challenges
in the preparation of ultrafine nanoporous gold microspheres, which
limit their application in advanced electronic packaging. In this
study, we propose a strategy for the controlled preparation of nanoporous
gold microspheres using low-gold-content alloy microspheres, which
includes wet chemical reduction, crystal diffusion and growth, liquid–solid
interfacial nonwetting effect, and chemical-free corrosion dealloying.
Nanoindentation results show that, compared to the brittle crushing
under deep pressing of polymer microspheres, the newly prepared nanoporous
gold microspheres exhibit significantly low-pressure-stable deep-press
anisotropic conductive properties. Specifically, the nanoporous gold
microspheres achieve up to 80% compression deformation under a load
of approximately 5 mN, primarily due to their unique nanoporous structure,
reducing hardness. In terms of piezoresistive performance, the nanoporous
gold microspheres maintain stable low-resistance conductive properties
during both loading and unloading processes, which is mainly attributed
to the large compression deformation enhancing the connection reliability
between substrates. When applied to anisotropic conductive film preparation
and device encapsulation testing, the results demonstrate that with
a powder loading of 5 wt %, the nanoporous gold microsphere-based
anisotropic conductive film exhibits a significantly wide pressure
encapsulation range (0.1–0.5 MPa), which is directly related
to the large compression deformation ability of the nanoporous gold
microspheres. This ability can not only reduce the requirement for
uniform particle size distribution and save sorting costs but also
effectively improve the conductivity of interconnected devices.
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Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Qinghua Zheng,Wei Zhou,Zhihao Ji,Qian Gao,Xiaolu Wang,Pengrong Lin,Fu Guo
Nano-solder pastes have been proven to be used as a bonding material for power electronics packaging. Especially, the Ag-coated Cu nanoparticles (Cu@Ag NPs) solder paste is gradually becoming a potential candidate. Herein, the innovative structure of Cu@Ag micro-nano mixed particles (Cu@Ag MNPs) is fabricated in the same reaction system. It is found that the nanoparticle and microparticle sizes are dominated by the interaction of multiple parameters. The PVP molecular weight (MW) can mainly control the nanoparticle size by the steric hindrance effect. The reaction time ( t ) can mainly regulate the microparticle size by the particle growth time. The reaction temperature ( T ) can mainly control the microparticle size by the nucleation rate. Besides, based on the observation of in-situ TEM, the sintering behaviour of the Cu@Ag MNPs mainly includes particle connection, void evolution, coarsening, and smoothness in this work. The sintering mechanism includes the atom flow on the surface of the particle, grain boundary diffusion, and Ostwald ripening. Consequently, Cu@Ag MNPs solder paste obtained the lowest porosity and the highest shear strength of Cu-Cu joints compared to the Ag NPs and Cu MPs solder paste at 250 °C and 300 °C without pressure in the air condition. Accordingly, this work clarifies the fabrication mechanism and sintering behaviour of the Cu@Ag particles, which provides a facile strategy and theoretical basis for the development of power electronics packaging.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Baobao Bai,Liangmu Pei,Ziqun Yang,Juan Lei,Caiyun Han,Shuang Wang,Jiancheng Wang
Precisely controlling active-site architecture is key for non-noble metal oxide catalysts in volatile organic compounds elimination. Herein, we demonstrate that lattice-doped Cu, rather than surface-loaded Cu, plays a decisive role in regulating the coordination environment and defect chemistry of MnO 2 , thereby fundamentally enhancing its toluene oxidation performance. Combined theoretical and experimental studies reveal that lattice-doped Cu creates a favorable coordination environment by significantly reducing oxygen vacancy formation energy and increasing electron density near the Fermi level. As a result, the Cu-Mn catalyst achieves 90 % toluene conversion at 218 °C, outperforming surface-loaded Cu/Mn (229 °C) and pristine MnO 2 (250 °C). The enhanced activity originates from the coupled increase of Mn 3 + species and oxygen vacancies, which synergistically improves reducibility and oxygen activation. In-situ DRIFTS further demonstrates that lattice-doped Cu facilitates aromatic ring opening and accelerates deep oxidation pathways. In addition, the Cu-Mn catalyst exhibits excellent hydrothermal stability under humid conditions, underscoring its practical potential. This work establishes a clear structure-activity-mechanism relationship and highlights lattice Cu doping as a general strategy for designing efficient non-noble metal oxide catalysts for VOC abatement.
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Inorganics
·
2026
·Vol. 14
·期 2
·43
·
IF 3
Huili Ren,Chenxia Gao,Siqi Huang,Libo Du,Shuang Liu,Xi Cao,Yuguang Lv
The proliferation of antibiotic resistance urgently demands the development of novel non-antibiotic-dependent antimicrobial strategies. Metal–organic framework material ZIF-8, with its tunable structure and excellent biocompatibility, shows great promise in the field of photocatalytic antibacterial applications. However, pure ZIF-8 suffers from limitations such as a narrow light absorption range and high carrier recombination rates. Doping ZIF-8 with transition metals such as cobalt or copper, herein denoted as M-ZIF-8 (M=Co, Cu), can significantly broaden its photoresponsive spectrum, promote reactive oxygen species (ROS) generation, and enable controlled metal ion release, thereby enhancing antimicrobial performance. Nevertheless, the release of metal ions also introduces potential biotoxicity concerns, limiting practical applications. This paper systematically reviews the trade-off between the photocatalytic antibacterial mechanism and biotoxicity of metal-doped M-ZIF-8 (M=Co, Cu), focusing on material design principles, antibacterial pathways, toxicity manifestations and mechanisms, as well as optimization strategies for “enhancing efficacy while reducing toxicity.” It further proposes future research challenges and directions in mechanism elucidation, smart material development, standardization, and industrialization to advance the safe and efficient application of these materials in medical and environmental fields.
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Surfaces and Interfaces
·
2026
·
IF 6
Jiayuan Zhang,Zhenlong Liu,Yu Liu,Liping Jiang,Caixia Ma,Lei Yang,Zunyuan Xie,Jizhen Li,Guofang Zhang
Transition metal oxides exhibit inherent catalytic activity for ammonium perchlorate (AP) decomposition; however, their performance is limited by the scarcity of accessible active sites and low conductivity. Therefore, morphology-directed structural design and interfacial engineering are highly desirable. In this study, two-dimensional (2D) MCo 2 O 4 nanosheets ( M = Fe, Ni, Cu, and Cr) were synthesized via a thermal expansion method and subsequently combined with three types of carbon materials C x (C x = rGO, CNTs, and g-C 3 N 4 ) to construct 2D MCo 2 O 4 /C x composites. Structural analyses demonstrate that the intimate interfacial coupling between 2D MCo 2 O 4 nanosheets and carbon materials effectively suppresses restacking and establishes a continuous conductive network. More importantly, strong interfacial coupling enables effective electronic modulation at the heterojunction, resulting in an optimized charge distribution and enhanced interfacial electron transfer. Among all catalysts, 5 wt. % FeCo 2 O 4 /rGO-1 demonstrates the most notable catalytic activity for AP decomposition, reducing its peak temperature in the high-temperature decomposition stage by 137.4 °C and increasing its heat release by 736.33 J·g⁻ 1 . Electrochemical tests confirm that accelerated interfacial charge transfer enhances AP pyrolysis. Kinetic modelling, TG-FTIR-MS, and DFT calculations indicate that the 2D-2D heterointerface boosts the adsorption of the AP intermediate NH 3 and promotes its conversion into higher-valence NO 2 , while also accelerating electron transport and lowering the decomposition barrier. The synergistic effect between interfacial electron transport and the heterojunction promotes the rapid AP degradation. Based on these findings, a plausible catalytic mechanism for AP decomposition is proposed.
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MOLECULAR PHARMACEUTICS
·
2026
·
IF 4.9
Mengxiao Fan,Xiang Wen,Jing Zhang,Ruibao Li,Xiangjun Chen,Xiaoning Song,Shengnan Li
Designing multifunctional nanotherapeutic platforms that integrate multiple therapeutic capabilities with enhanced tumor specificity and low systemic toxicity has emerged as a promising strategy for cancer therapy. Herein, we put forward a simple and clear route to construct multifunctional nanoparticles (NPs) integrating chemodynamic therapy (CDT), starvation therapy (ST), and photothermal therapy (PTT) by using polydopamine as a protective layer to coat Cu2+-doped zinc phosphate loaded with glucose oxidase (designated as Cu-ZnP@GOx/PDA/PEG NPs) for optimizing therapeutic efficacy. The obtained Cu-ZnP@GOx/PDA/PEG NPs utilize porous Cu2+-doped ZnP to provide sufficient space for efficient GOx loading, while the PDA shell coated on the surface acts as a “gatekeeper” to prevent enzyme leakage and provides photothermal conversion capabilities. When Cu-ZnP@GOx/PDA/PEG NPs accumulate at tumor sites, the slightly acidic tumor microenvironment triggers the degradation of Cu-ZnP@GOx/PDA/PEG NPs, thereby releasing loaded GOx and doped Cu2+. The released Cu2+ is reduced to Cu+ by glutathione (GSH), subsequently catalyzing H2O2 decomposition to generate highly cytotoxic hydroxyl radicals (•OH) for effective CDT. The released GOx can cut off glucose metabolism in tumor cells to realize ST, and the substances produced during the process of glucose oxidation can improve the microenvironment for better CDT. Under near-infrared irradiation, the generated heat by the photothermal effect of PDA can not only be applied for PTT but also enhance the catalytic efficiency of Fenton-like reactions and the enzymatic activity of GOx, achieving the goal of trimodal synergistic therapy of CDT/ST/PTT. Importantly, in vivo studies using tumor-bearing mice demonstrate that the combined therapy via Cu-ZnP@GOx/PDA/PEG NPs effectively suppresses tumor growth, and no obvious systemic toxicity can be observed. Taken together, the construction of Cu-ZnP@GOx/PDA/PEG NPs can provide a feasible strategy for a safe and efficient cancer therapy.
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COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.2
Wen Si,BingYang Ma,LinLin Hou,Shutong Tian,Guanglan Liao,Li Fang,Guoqing Xin,Hu Long,Tielin Shi
Shrinking device dimensions and escalating heat fluxes bottleneck chip thermal management. Boron nitride nanotubes (BNNTs) combine high thermal conductivity with a wide band gap, making them attractive fillers for composites. However, deployment of BNNTs remains constrained by limited production throughput and associated cost barriers. Here, an ammonia-activated high-pressure laser ablation strategy with non-consumable Cu mesh assistance (A-HPLA-CuM) is developed for BNNT synthesis, yielding BNNT-rich fibrous product at 692.7 mg h −1 using a scalable setup. The obtained BNNTs exhibit high crystallinity, with a mean diameter of 9 nm and a mean wall number of 7. Compared with conventional laser ablation and Cu mesh-assisted synthesis in N 2 , ammonia activation is associated with a higher production rate while maintaining product quality. The improvement is likely associated with NH 3 -derived B-N–H intermediates that may facilitate B-N conversion, together with Cu mesh assistance that may help maintain a favorable local reaction environment. As a proof-of-concept validation, the as-synthesized BNNTs were evaluated in composite films. At 50 wt% BNNT loading, the film delivers an in-plane thermal conductivity of 15.9 W m −1 K −1 and reduces temperature by 4.67 ℃ relative to the BN-filled control after 30 s. This work demonstrates A-HPLA-CuM as a scalable route for BNNT synthesis.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yukun Liu,Zekun Wang,Yuanyuan Zhang,Chenguang Yang,Tonglu Sun,Cian Xie,Hao Ding,Lefu Mei,Yangai Liu,Yue Wang
The commercialization of cesium lead halide perovskite quantum dots (QDs) is hindered by lead toxicity and poor stability. We propose a synergistic “chemical-physical” dual-confinement strategy. Chemically, Sn 2 + and Cu 2+ are co-doped into CsPbBr 3 , forming low-lead CsSn 0.7 Cu 0.1 Pb 0.2 Br 3 QDs, where Sn 2+ tunes the bandgap and Cu 2+ passivates Sn-related defects. Physically, QDs are in-situ grown within halloysite nanotubes (HNTs), a natural clay, serving as a nanoreactor and barrier. Silane modification enhances hydrophobicity. The composite exhibits high photoluminescence quantum yield (73.46%), excellent thermal reversibility, and remarkable water resistance (86% intensity retention after 12 h). Applications include a wide-color-gamut white light-emitting diode (122.1% of National Television System Committee (NTSC)) and an efficient visible-light photocatalyst for methylene blue degradation. This work provides a sustainable pathway for stable, low-toxicity perovskite materials in optoelectronics and environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Haoran You,Mingkun Wu,Bihui An,Chenhao Zhang,Mengkui Tian
Electrochemical conversion of CO 2 to value-added chemicals is a promising carbon recycling strategy for mitigating CO 2 emissions from fossil fuels and addressing associated environmental challenges. In copper-based catalysts, Cu + species promote the reduction of CO 2 to multi‑carbon products, such as ethylene (C 2 H 4 ). However, under typical electroreduction, Cu + is prone to reduction to Cu 0 , leading to degradation of catalytic performance and poor stability. Herein, we present an interfacial engineering strategy to design a CuI-Cu 2 O composite catalyst with densely packed Cu 2 O nanoparticles on tetrahedral CuI substrates and self-stabilizing Cu + ability for selective CO 2 electroreduction to C 2 H 4 . Density functional theory (DFT) calculations and spectroscopic characterizations demonstrated that the CuI-Cu 2 O catalyst combined the efficient generation of *CO intermediates by Cu 2 O with the efficient C C coupling functionality of CuI, and the iodide ions within the catalyst autonomously modulated the copper oxidation state to stabilize Cu + , collectively enhancing CO 2 -to-C 2 H 4 selectivity. Consequently, the CuI-Cu 2 O catalyst achieved a C 2 H 4 Faradaic efficiency of 62.98 ± 1.05% along with a high current density of 275.16 mA·cm −2 at −0.97 V vs. the reversible hydrogen electrode (RHE). In the stability test, the CuI-Cu 2 O catalyst operated stably for over 16 h at a current density of approximately 279.95 mA·cm −2 . This study provides a catalyst design strategy that simultaneously enhances *CO supply and C C coupling while autonomously modulating the active Cu + state, offering an effective approach for achieving stable and highly selective CO 2 -to-C 2 H 4 conversion.
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Journal of Environmental Sciences
·
2026
·
IF 6.5
Jiaqi Ding,Xiaolin Xiong,Huanhuan Shi,Yuxiao Mu,Haojun Ji,Jingwen Wang
pH switches reactive species in ZVC/PAA: HO • at pH 3, Cu(III) at pH 7. • Surface Cu x O shell is the key site governing the generation of reactive species. • HO • -dominated system rapidly removes diverse sulfonamides with non-selectivity. • Cu(III) system selectively degrades sulfonamides containing heterocyclic rings. • ZVC demonstrates higher reusability and lower Cu ions leaching at pH 7. Zerovalent copper (ZVC) has garnered considerable attention in Fenton-like reactions, but the surface properties of ZVC that regulate reactive species (RSs) generation remain elusive. Herein, we systematically investigated the pH-dependent regulation of hydroxyl radical (HO • ) and high-valent copper (Cu(III)) generation during peracetic acid (PAA) activation by ZVC for the degradation of sulfonamide antibiotics (SAs). Characterization results revealed that ZVC has a core-shell structure, in which the surface copper oxide (Cu x O) layer serves as the primary active site. Theoretical and experimental analyses elucidated that pH modulates the surface properties of ZVC. At pH 3, the protonation of Cu x O promotes the generation of HO • in the ZVC/PAA system; conversely, under neutral conditions (pH 7.0), the unprotonated state favors the formation of Cu(III) as the dominant RSs. This trade-off between HO • and Cu(III) generation leads to distinct degradation performance for SAs degradation. HO • -dominated system achieved non-selective removal (>96 %) of various SAs; whereas the Cu(III) pathway selectively degraded SAs with heterocyclic rings at pH 7. The Cu(III) pathway outperformed the HO • system in terms of humic acid tolerance and catalyst recyclability in the ZVC/PAA process. This work clarifies the decisive role of surface protonation of ZVC in steering HO • versus Cu(III) pathways and provides a theoretical basis for designing pH‑specific Fenton-like reaction processes. Download: Download high-res image (355KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Ying Zhang,Shuang Wu,Miao Fei,Guoqing Wang,Khan Khalid,Bin Lin,Wuliang Feng,Xingbao Zhu,Yufeng Zhao,Jiujun Zhang
Electron-ion confinement enabled by 3D Cu and Li-Si alloy for lithium metal batteries. • Symmetric cells sustain 4.0 mA/cm 2 with ultralow polarization over 1200 h lifespan. • NCM811 full cells retain 80.70% capacity after 500 cycles at 2C with high loading. • The lithiophilic Li-Si alloy guides uniform Li + flux suppressing dendrite growth. • Pouch cells achieve 83.87% retention after 300 cycles validating practical scalability. Lithium metal batteries with ultrahigh energy density are promising for next-generation energy storage, but their practical deployment are severely hindered by uncontrolled dendrite growth and extreme volumetric instability. Here, we propose electron-ion confinement enabled by 3D Cu framework and lithiophilic Li-Si alloy (3D-LS) for high-performance lithium-metal batteries. A new-type composite anode based on commercial 3D Cu framework and lithiophilic Li-Si alloy is successfully designed and produced via a facile calendering process, which enables electron-ion confinement to suppress dendrite proliferation and mitigate volume expansion-induced stress. 3D conductive Cu framework establishes continuous electronic transmission pathways, while lithiophilic Li-Si alloy regulates uniform Li + flux distribution, synergistically constructing a robust electron-ion confinement structure. Symmetric cell with 3D-LS anode exhibits ultra-long cycling stability over 1200 h at 0.2 mA/cm 2 and maintain robust performance at 4.0 mA/cm 2 . When assembled with industrialized LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathode, full cell retains 80.70% capacity after 500 cycles at 2C, with pouch-cell prototypes further validate its practical scalability. These findings provide a universal electron-ion confinement route to develop ultrastable high-energy-density lithium-metal batteries. Download: Download high-res image (155KB) Download: Download full-size image
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Lili Liu,Yi Yuan,Haibo He,Junping Dong,Xitian Peng,Xiaoxia Yan,Liqiang Luo
Cu/Fe-N-C SAzymes with dual enzyme activities are rapidly synthesized via microwave. • A four-channel sensor array enables pesticide-specific fingerprint-like responses. • The array discriminates three types of pesticides (5–500 ng/mL) and their mixtures. • LDA and LOOCV confirm robust broad-spectrum screening capability toward pesticides. • High-throughput screening of multi-pesticide residues in fruits is validated. Background The widespread and excessive use of pesticides poses significant risks to both human health and ecological integrity. Inspired by the mammalian olfactory cross-response mechanisms, colorimetric sensor arrays provide a rapid, cost-effective and visual platform for multi-residue pesticide monitoring. Results Herein, we report a four-channel response array constructed from Cu-N-C and Fe-N-C single-atom nanozymes rapidly synthesized via microwave assistance. These nanozymes exhibit intrinsic laccase-like (LAC) and peroxidase-like (POD) dual enzymatic activities, which are differentially modulated by distinct pesticide classes to generate characteristic fingerprint-like responses. Integrating with linear discriminant analysis (LDA) for dimensionality reduction and visualization, this array successfully discriminates three major pesticide categories―sulfonylureas, organophosphates, and carbamates, comprising nine typical pesticides within the discrimination concentration range of 5–500 ng/mL, and further distinguishes pesticide mixtures of varying compositional ratios. Significance Leave-one-out cross-validation (LOOCV) confirms the robust broad-spectrum classification capability of the system. The practical utility of this array is demonstrated through high-throughput screening of multi-pesticide residues in fruit samples. The synergistic integration of microwave-accelerated nanozyme synthesis and multichannel colorimetric sensing establishes a versatile and reliable paradigm for universal pesticide detection in complex matrices. Two single-atom nanozymes, Cu-N-C and Fe-N-C, exhibiting both laccase-and peroxidase-like activities, are rapidly prepared by microwave-assisted synthesis. A four-channel colorimetric array is then established, in which the nanozyme activities are differentially modulated by distinct pesticide categories (sulfonylureas, organophosphates, and carbamates), producing characteristic fingerprint responses. Linear discriminant analysis (LDA) enables precise discrimination of nine pesticides and their mixtures over a concentration range of 5–500 ng/mL, with robust classification confirmed by leave-one-out cross-validation (LOOCV). This platform represents a reliable and efficient strategy for high-throughput screening of multi-pesticide residues in fruits. Download: Download high-res image (303KB) Download: Download full-size image
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