INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Yihong Yang,Ruiying Liao,Tengxin Huo,Yongling Xu,Huaiwen He
Cross-linked GA-PEI inhibited aggregation on the BC scaffold via PDA mediation. • The aerogel exhibits superior broad-spectrum capacities for Cu(II), Congo Red, and Methylene Blue. • Pollutant-dependent capture is driven by synergistic chelation, electrostatic, and π-π interactions. • The bio-based aerogel offers a sustainable route for complex water remediation. Direct functionalization of biopolymer aerogels often encounters steric agglomeration and pore blockage, which can significantly limit the accessibility of active sites for water purification. To address this challenge, a robust composite aerogel (BC-PDA-PEI) was engineered via a stepwise assembly strategy, utilizing polydopamine (PDA) as an interfacial adhesion layer to uniformly anchor polyethyleneimine (PEI) onto a bacterial cellulose skeleton. Structural characterization demonstrated that the PDA intermediate effectively suppresses the phase separation of PEI, thereby preventing bulk agglomeration and facilitating a thin, nanoscale coating. The resulting composite exhibited broad-spectrum removal performance, achieving maximum adsorption capacities ( q m ) of 93.52 mg/g for Cu(II) (as a model heavy metal), 615.02 mg/g for the anionic dye Congo Red, and 92.22 mg/g for the cationic dye Methylene Blue. Adsorption kinetics and isotherms were best described by the pseudo-second-order and Langmuir models, respectively, suggesting a monolayer-type adsorption mechanism. Post-adsorption FTIR/XPS analyses, together with the surface-charge trend, suggested pollutant-dependent interaction pathways: abundant amine groups contribute to the capture of Cu(II) via strong coordination, while the net positive surface character of BC-PDA-PEI favors the electrostatic removal of anionic dyes. This work presents a practical interfacial modification route to address agglomeration and pore occlusion issues in biopolymer aerogel functionalization, leading to the development of a sustainable adsorbent for the efficient removal of heavy metal ions and organic dyes from wastewater.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Dan Liu,Shizhi Tan,Xujia Pan,Fei Mao,Haojie Qian,Zebo Wu,Huibin Yin,Shiyuan Gao,Yongjun Xu
Cu-based catalysts are prone to sintering and deactivation under the high-temperature conditions of methanol aqueous-phase reforming of methanol (APRM). ZnAl 2 O 4 spinel has attracted much attention due to its flexible surface properties and tunable structural composition. Therefore, this study proposes a dual-modification strategy involving the incorporation of ZnO nanosheets and sesbania powder(SP)-derived carbon species on ZnAl 2 O 4 spinel support, thereby promoting the highly dispersed distribution of Cu nanoparticles and preparing a Cu/ZnO–ZnAl 2 O 4 –C catalyst (CZZAC). The H 2 production rate of the CZZAC catalyst is 66.22 μmolH 2 /g cat ./s under 210 °C. Based on the TPSR characterization analysis of the APRM reaction path, the results show that the CZZAC catalyst begins to produce hydrogen at 145 °C and follows the reaction path of the methyl formate intermediate product. This research has prepared a novel spinel nanosheet, demonstrating its effectiveness in preparing highly dispersed Cu catalysts, and providing a practical and economical alternative to noble metal catalysts.
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Journal of Energy Chemistry
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2026
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IF 15.6
Zhenxuan Liu,Peng Chen,Qi Wu,Qingquan Zhou,Abudukayier Abulimiti,Lingjun Li,Tianxiang Ning,Lei Tan,Kangyu Zou
P2-type layered oxide cathode materials suffer from severe challenges for practical application in sodium-ion batteries (SIBs), such as irreversible detrimental phase transitions, sluggish Na + diffusion kinetics, and poor air stability. To address these issues, a dual-site synergistic doping strategy is rationally designed and implemented in this work, enabling the successful synthesis of the P2-Na 0.65 Ni 0.09 Fe 0.16 Mn 0.67 Cu 0.05 Zn 0.05 O 2 (NFMCZO) cathode material. Atom-level energy-dispersive X‑ray spectroscopy (EDS) mapping directly confirms the precise dual-site occupation of Cu/Zn. Specifically, Zn 2+ occupies the Na sites to form a “pillar effect” to stabilize the interlayer structure, prevent the intrusion of H 2 O and CO 2 , and hinder transition metal (TM) migration. Meanwhile, both Zn 2+ and Cu 2+ are doped into the TM layer, which strengthens the TM–O bonds, avoids cracks, and expands the Na + transport pathways. Ex-situ X-ray diffraction (XRD) results further demonstrate that the detrimental P2-O2 phase transition is effectively suppressed during repeated charge-discharge cycling. Benefiting from the synergistic doping effect, the NFMCZO cathode shows excellent electrochemical performance. It achieves a capacity retention of 75.16% after 200 cycles at 1 C, along with outstanding rate capability (78.36 mAh g −1 at 5 C) and remarkable air stability (almost no structural change after 30 days of exposure). This work provides feasible design insights into the development of SIBs with long cycling life and excellent air stability, which can be extended to the construction of more stable layered oxide compounds and further promote the enhancement of their electrochemical performances. Cu/Zn dual-site-specific synergistic doping stabilizes P2-type layered oxide cathodes, in which Zn acts as an interlayer pillar to expand the Na + transport pathway; meanwhile, both Cu and Zn strengthen TM–O bonds to inhibit phase transitions, thus enabling fast Na + diffusion, excellent cycling stability, and exceptional air stability. Download: Download high-res image (195KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yunian Chen,Zhufu Fu,Dewei Zhang,Zeyu Wu,Shanshan Gao,Boyu Han,Junyu Pan,Xi Gao,Shenghong Ju,Yuan Xue
Cu/ZnAl 2 O 4 is a promising alternative to conventional Cu/ZnO/Al 2 O 3 (CZA) catalysts because its higher structural stability suppresses sintering-induced deactivation. However, its performance remains limited by weak metal-support interaction (MSI). Here, Zr was incorporated into the ZnAl 2 O 4 support to regulate the interfacial electronic structure and create defect sites. The optimized catalyst, containing 6 wt% Zr in the support and 8 wt% Cu, achieved a methanol space-time yield of 310.61 g MeOH /kg cat /h at 260 °C, 38% higher than that of the Zr-free sample. It also showed much higher Cu-based activity and stability than CZA. Combined characterizations and DFT calculations reveal that Zr strengthens MSI, suppresses Cu sintering, increases surface oxygen vacancies, and enhances Cu + /Cu 0 synergy, thereby promoting the formate pathway and lowering the barrier of the rate-determining step, which leads to improved methanol synthesis performance.
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 3
·122490
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IF 7.5
Ruiqi Li,Wenxin Diao,Jie He,Fangbo Zhao,Xiao Yan Tang,Yueling Sun,Junqing Li,Lei Wang
As modern industry continues to develop rapidly, water pollution caused by antibiotics and synthetic dyes has become increasingly severe. To address the challenge of efficient treatment of such organic wastewater, a novel modified MIL-101(Fe) photocatalyst was constructed via a synergistic strategy of Cu²⁺ doping and in-situ polymerization of aniline. Under simulated solar irradiation, the composite photocatalyst achieved degradation efficiencies of 93.06% for tetracycline and 94.2% for methylene blue, exhibiting broad-spectrum photocatalytic activity toward various organic dyes. Cu²⁺ and PANI synergistically optimize the band structure, narrowing the bandgap to 2.23 eV while broadening the visible-light response range, promoting charge transport, and forming a stable Z-scheme heterojunction at the interface to suppress the recombination of photogenerated charge carriers. The results of reactive species trapping experiments showed that ·OH, h⁺, and ·O 2 - collectively governed the degradation process. The core mechanism stems from the ligand-to-metal charge transfer (LMCT) characteristics of MIL-101(Fe), the electron-trapping effect of Cu²⁺, and the conjugated conductive network of PANI. In addition, the composite photocatalyst exhibited strong resistance to ionic interference and maintained degradation efficiencies above 80% after five consecutive cycles, demonstrating excellent stability and reusability. This work provides an efficient photocatalytic material and a promising strategy for the comprehensive treatment of organic wastewater.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
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IF 4.6
Sumin Xu,Jiajia Zhang,Xin Wang,Jianying Qu
The simultaneous detection of acetaminophen (PA) and its toxic metabolite of 4-aminophenol (4-AP) is crucial for ensuring drug safety and controlling environmental risks. Here, a copper-based porous carbon nanocomposite (Cu/Cu 2 O@PC) derived from core-shell metal-organic frameworks (MOFs) with high conductivity, abundant catalytic sites and a stable porous structure were designed and synthesized through employing a controlled pyrolysis of a precursor with Cu 2 O as the core and CuZn-BTC as the shell, which served as the foundation for constructing a highly sensitive and selective electrochemical sensing platform for simultaneous determination of PA and 4-AP. The resulting sensor exhibited excellent analytical performance under optimized conditions, including wider linear ranges (0.10–300.00 μM for PA and 0.10–400.00 μM for 4-AP), lower detection limits (0.027 μM for PA and 0.015 μM for 4-AP), as well as good reproducibility and stability. And, satisfactory recovery were achieved for real samples analysis. This work not only provides an efficient and reliable analytical method for monitoring phenolic pollutants but also offers a new strategy for designing high-performance electrochemical sensing materials based on MOF-derived architectures.
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Journal of Energy Storage
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2026
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IF 10.7
Tingting Wei,Jiemin Dong,Xu Cheng,Yanhua Zhang,Jiaxin Zhang,Ming Liang,Jianfeng Li,Ting-Feng Yi
The Fe–Cu–Mn based layered oxides have gained considerable attention as particularly promising cathode materials for sodium-ion batteries (SIBs) due to their low cost, earth abundance, and favorable electrochemical properties. However, current research often treats this system as a unified matrix, which obscures the specific contributions of the individual Fe, Cu, and Mn components in determining structural stability and electrochemical performance. Herein, we systematically investigate the ternary Fe–Cu–Mn system without the addition of extraneous elements. By precisely tuning the stoichiometric ratios of Fe, Cu, and Mn within a Mn-rich layered framework, a direct correlation is established between composition, structure, and electrochemical behavior. It reveals that optimizing the Fe/Cu/Mn ratio effectively suppresses undesirable phase transitions, enhances structural stability, and results in superior electrochemical performance. The Na 0.70 Fe 0.15 Cu 0.15 Mn 0.70 O 2 (NFCM-0.70) cathode delivers a high initial energy density of 293.87 Wh kg −1 (based on the mass of the cathode) and presents the excellent capacity retention of 82.9% after 100 cycles at 0.2C. This work underscores the importance of rationally controlling intrinsic component ratios as a strategy for developing low-cost, high-performance layered oxide cathodes for SIBs.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Li Zhenfeng,Zhao Yifan,Shao Jianhang,Wang Zixu,Li Jinyang,He Peng,Zhang Shuye
Copper nanowires (CuNWs) present a promising low-cost alternative to indium tin oxide for next-generation flexible electronics. However, their widespread use is hindered by their natural tendency to oxidize and the difficulty of establishing effective interwire connections on thermally sensitive substrates. Here, we introduce durable, oxidation-resistant transparent conductive films (FTCFs) made from Cu@Ag core–shell nanowires, produced through a pulsed photonic sintering process. Combined multiphysics simulations and systematic experiments reveal that the innovation of this work lies in a synergistic photonic-sintering mechanism rather than in the separate use of Cu@AgNWs, transparent heating, or electromagnetic interference (EMI) shielding. During the short-pulse treatment, localized photothermal activation promotes nanowire junction welding, while transient softening of the PI surface enables partial nanowire embedding and interfacial anchoring. This coupled mechanism integrates Ag-shell-enabled oxidation resistance, low-resistance welded junctions, substrate-assisted mechanical stability, transparent EMI shielding, and rapid low-voltage electrothermal response in one Cu-based flexible transparent conductive film. This architecture simultaneously provides excellent electrical conductivity and strong interfacial adhesion without damaging the structure. As a result, these optimized FTCFs achieve a competitive sheet resistance of 16.9 Ω/sq at 81.6% transmittance and demonstrate remarkable stability under mechanical stress and environmental conditions. Showing versatile multifunctionality, the films exhibit effective X-band EMI shielding performance (up to 39 dB) and function as transparent heaters with rapid low-voltage electrothermal response, reaching a temperature increase of more than 70 ° C at 3 V and showing fast switching-induced temperature variation within the 1 s acquisition interval. This work offers a scalable, mechanism-based approach for producing high-performance Cu-based FTCFs, emphasizing their great potential in advanced high-frequency shielding and wearable thermal management.
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Han Xiang,Lu Lin,Yu Li,Qisong Yi,Chaoran Jiang,Rui Chen,Yuanshuai Liu,Na Sai,Jinlu He,Fenghua Bai,Wenhao Luo
Selective hydrogenation of furfural (FFL) to furfuryl alcohol (FAL) represents a pivotal paradigm in sustainable biomass valorization. In this work, nanoscale Cu clusters were encapsulated in silicalite-1 (S-1) zeolite using in-situ synthesis, and further modified by a rare-earth element of La for regulating the catalyst microenvironment. The obtained La-Cu@S-1 can provide an enhanced performance in the FFL-to-FAL transformations, with 98.6% conversion of FFL and 99% selectivity of FAL at 110 °C, 20 bar H 2 , and 3 h. Besides, La-Cu@S-1 shows a good stability without apparent catalyst deactivation upon four consecutive runs. Extensive characterization research reveals that La addition could provide anchoring sites for Cu nanoclusters via an enhanced electronic interaction, thereby effectively suppressing metal leaching and agglomeration during the liquid-phase catalysis. Additionally, La addition could modulate the zeolite microenvironment of encapsulated Cu nanoparticles and notably stabilize the conventionally unstable Cu + species at a high proportion, even in a reductive H 2 atmosphere during catalysis, accounting for the enhanced activity and stability. This study showcases La modification as an efficient approach to rationally develop metal-zeolite combinations with enhanced performance, promoting potential utilization and development of rare-earth elements in the valorization of biomass and other renewable energy.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yiming Zhao,Jingyuan Zhang,Junmei Liu,Jiatong Han,Dan Xu,Jing Wang,Fengzhi Lyu,Lin Qin,Donghui Xu,Ge Chen,Guangyang Liu
Defect-engineered Cu–TCPP/ZIF-L nanosheet membrane: tannic acid coordinates with Cu 2+ to create defect sites, while ZIF-L serves as an interlayer spacer to suppress π–π stacking and restore transport. • The optimized membrane achieves 691.20 L·m -2 ·h -1 ·bar -1 , a 75.5× increase over pristine Cu–TCPP. • Efficient dye removal under static conditions: 97.77% (CV) and 97.87% (MG), suitable for agricultural water purification. • Adsorption–degradation self-cleaning via single-layer chemisorption/ion exchange and catalytic oxidation by O₂· - / 1 O₂; cucumber seedling tests confirm irrigation safety. Dye-laden wastewater from aquaculture and agricultural runoff poses serious environmental challenges, calling for membranes that can deliver both high water flux and efficient dye removal. However, MOF-based composite membranes often still face trade-offs between permeance and separation efficiency, and their practical performance is limited by fouling and insufficient self-regeneration. We hypothesize that defect engineering of Cu–TCPP via tannic-acid-mediated metal–phenolic network (MPN) disruption, together with ZIF-L nanosheet interlayer modulation, can create favorable transport pathways and strengthen adsorption/ion-exchange interactions while enabling ROS-driven self-cleaning. A defect-engineered Cu–TCPP/ZIF-L nanosheet-modified PVDF membrane was prepared using an MPN strategy with tannic acid, and its dye removal performance toward malachite green and crystal violet, together with the underlying mechanisms, was systematically investigated. The optimized membrane achieves a 75.5-fold increase in water permeance to 691.20 L/(m 2 ·h·bar) while maintaining high removal efficiencies of 97.87% for malachite green and 97.77% for crystal violet, and it exhibits self-cleaning behavior enabled by superoxide radicals and singlet oxygen. This work demonstrates an integrated Cu-TCPP–TA/ZIF-L/PVDF membrane design that combines MPN-mediated defect regulation with ZIF-L-assisted lamellar structure modulation for adsorption–degradation-based dye removal in agricultural water-related scenarios. Download: Download high-res image (170KB) Download: Download full-size image
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Nanoenergy Advances
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2026
·Vol. 6
·期 3
·23
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IF 4.2
Yuping Wu,Hu Fu,Bolin Li,Qinran Zhang,Zhirong Chen,Haichen Li,Hongming Zhou
Poly(ethylene oxide) (PEO)-based solid polymer electrolytes are regarded as highly promising solid electrolyte materials owing to their favorable chain flexibility. However, their practical application is hindered by low room-temperature ionic conductivity and poor mechanical properties. To address these issues, a metal–organic framework (Cu-MOF) with a 2D layered structure and 1D microchannels is introduced into PEO to form a composite solid electrolyte. The results reveal that Cu-MOF can suppress PEO crystallization through steric hindrance and coordination interactions, thereby increasing the fraction of the amorphous phase. Moreover, its unsaturated metal sites can attract TFSI−anions, promoting the dissociation of the sodium salt and enhancing sodium-ion transport. Theoretical calculations and molecular simulations further confirm the regulatory role of Cu-MOF in ion transport. Leveraging this mechanism, the Na3V2(PO4)3/C|PCM-8%|Na cell delivers exceptional electrochemical performance over a wide temperature range. At room temperature, the capacity exhibits virtually no decay after 200 cycles at 0.5 C, and outstanding rate capability is maintained even at a high rate of 4 C. At a temperature of 65 °C, a capacity retention of 91.4% is achieved after 200 cycles at 0.5 C. This study offers a highly promising strategy for the development of wide-temperature-range, high-performance solid-state sodium batteries.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Kaiqiang Yang,Junlei Liu,Wenyan Zhang,Wenying Li,Wei Xu
Flavonoids are important natural bioactive compounds with remarkable health benefits, requiring rapid and accurate detection for food nutrition assessment and quality control. However, it remains challenging to simultaneously discriminate multiple flavonoids in complex matrices. Taking inspiration from the tunable structures of MOF-based nanozymes and the ability of sensor arrays to simultaneously detect multiple substances, we herein propose an innovative four-channel colorimetric sensor array for flavonoid identification. Four copper-based MOF nanozymes (Cu-ImC 2 N, Cu-ImC 2 , Cu-ImCl 2 , Cu-ImPh) were synthesized with different imidazole derivatives as ligands, showing significant differences in their peroxidase-like activities. Exploiting their specific catalytic activity variations at pH 6.0 and 6.5, the two most active nanozymes (Cu-ImC 2 N and Cu-ImC 2 ) were strategically selected to construct the array. Upon processing the array data with linear discriminant analysis (LDA), the array achieved 100% accurate discrimination and quantitative detection of seven flavonoids, with limits of detection (LODs) ranging from 0.039 to 0.982 μM. Furthermore, comparisons of concentration-independent models built with multiple machine learning algorithms showed that the K-nearest neighbors (KNN) method outperformed LDA, effectively reducing interference from concentration variations. The sensor array was successfully applied to the analysis of commercial soy milk, reliably differentiating products from different brands and bean sources (e.g., soybean and mung bean). This strategy surpasses traditional single-analyte methods and holds substantial practical potential for the rapid on-site detection of complex food systems.
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