Materials Today Energy
·
2026
·
IF 8.1
Wen S. Gou,Tian Jiang,Qi Fan,Chang H. Zhu,Rui R. Zhang,Shi J. Yuan
Organic-based frameworks are increasingly recognized as promising cathode materials for aqueous zinc–ion batteries (AZIBs), owing to their structural specificity and renewable/safety nature. The electrochemical performance, however, is less than optimal due to the inadequate structural stability and poor electronic/ionic conductivity of the organic-based frameworks, resulting in rapid capacity decay and poor rate capability. Herein, a crepe cake structured Ca-Organic-CNT framework is designed to address these two problems. In this material architecture, the porous carbon nanotube (CNT) network facilitates efficient electron transfer and enhances structural stability, while Ca-Organic frameworks with crystal enlargement boost Zn 2+ intercalation and release. The hybrid material exhibits balanced high performance with respect to specific capacity and cycling stability. A reversible specific capacity of 475 mAh g −1 is achieved at 50 mA g −1 with a high capacity retention rate of 91% even after 400 cycles. This work provides a strategy for the rational design of organic electrode materials for high performance AZIBs.
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ACTA MATERIALIA
·
2026
·
IF 10.7
Yucheng Lv,Yao Di,Linlin Zhou,Hui Xu,Xinmei Hou,Yanglong Hou
The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are central to renewable energy technologies, yet their sluggish kinetics and reliance on scarce noble-metal catalysts hinder large-scale implementation. Here, we demonstrate that sulfur (S) -mediated spin-state engineering of single-atom Fe catalysts establishes a direct structure-spin-activity relationship for bifunctional oxygen electrocatalysis. Optimal S coordination shifts the Fe centers to a high-spin configuration within a porous hollow carbon architecture. This spin-state modulation optimizes the adsorption energetics of oxygen intermediates, lowering kinetic barriers for both ORR and OER. FeS 2 NC-h exhibits outstanding OER and ORR activity in alkaline media, achieving a low potential gap (ΔE) of 0.63 V, markedly outperforming the commercial Pt/C+IrO 2 (0.79 V). In rechargeable Zn-air batteries (RZABs), FeS 2 NC-h enables an open-circuit voltage of 1.50 V, peak power density of 202 mW cm −2 , specific capacity of 812 mAh g Zn −1 , and exceptional cycling durability exceeding 1200 h with round-trip efficiency >58%. This work establishes heteroatom-enabled spin-state engineering as a powerful strategy to transcend traditional coordination optimization, offering a general pathway to noble-metal-free integrated oxygen electrocatalysts for sustainable energy conversion and storage. Download: Download high-res image (302KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jingli Zhai,Wanting Li,Xinyu Zhang,Qian Zhang,Xiaoqiang Liu,Ruifeng Chong,Caixia Feng,Yan Wang,Danny K.Y. Wong,Yanmei Zhou
Herein, a bimetallic zinc-cobalt metal-organic framework (ZnCoMOF) microsphere cluster with abundant oxygen vacancies was rationally designed and synthesized for visible-light-driven photocatalytic CO 2 reduction. XPS results reveal that the substitution of Co 3 + by Zn 2+ modulated the electronic structure of Co sites, reduced the Co 3+ /Co 2+ ratio, and generated electron-rich Co 2+ centers as well as oxygen vacancies. The reversible Co 3+ /Co 2+ redox pair accelerates charge migration, while oxygen vacancies inhibit carrier recombination. Moreover, electron-enriched Co 2+ favor CO 2 activation. The synergistic effect of multiple active centers optimizes reaction kinetics and catalytic performance. The optimized Zn 0.3 Co 1 MOF delivered a CO yield 2.21 times as high as that of pristine CoMOF, reaching 5.33 mmol g −1 within 4 h, and it achieved an ultrahigh CO selectivity of 100%. The enhanced performance benefits from Zn-induced electronic modulation and synergistic catalysis. Notably, in a diluted CO 2 atmosphere, the product composition exhibits an obvious transition from CO to CH 4 with the decrease in CO 2 concentration. Lower CO 2 concentration contributes to a higher CH 4 yield and greater CH 4 selectivity in the products. Under 20% CO 2 atmosphere, the CH 4 production reached 0.36 mmol g −1 within 4 h with an ultra-high CH 4 selectivity of 100%. These results indicate that in the Zn x Co 1 MOF-catalyzed CO 2 reduction system, product selectivity can be readily modulated by adjusting CO 2 concentration. This offers a facile strategy for the efficient utilization of low-concentration CO 2 from industrial flue gas. Download: Download high-res image (394KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xiuqing Guan,Ziwei Ye,Xin Lei,Xinyan Wen,Jie Duan,Xianrui Chen,Lin Wang,Jie Pang
Flower-like KGZn superstructures formed by sequential coordination assembly. • KGZn enhances barrier, mechanical, and UV-blocking properties of KC films. • KC-KGZn films show DPPH (43.40%) and ABTS (97.67%) scavenging activities. • KC-KGZn films exhibit > 92% antibacterial ratios against E. coli , S. aureus , and S. cerevisiae . • KC-KGZn films extend blueberry shelf life to 15 days at 25 °C. The challenge of spoilage and waste in fruits is creating a strong demand for the development of green and efficient active packaging materials. This work presents a flower-like kaempferol–gallic acid–Zn coordination superstructure (KGZn) synthesized via coordination-driven assembly. KGZn was incorporated into a film matrix composed of konjac glucomannan and carboxymethyl chitosan (KGM/CMCS, denoted as KC), yielding the KC-KGZn composite film. Serving as a multifunctional agent, KGZn significantly improves the physicochemical properties of the composite film, enhancing its barrier performance and mechanical properties. Furthermore, the composite film exhibits excellent antioxidant activity, with DPPH and ABTS scavenging rates reaching 43.40 ± 2.10% and 97.67 ± 0.67%, respectively, as well as potent antimicrobial activity, showing inhibition ratios of 92.15%, 100%, and 98.66% against Escherichia coli , Staphylococcus aureus , and Saccharomyces cerevisiae , respectively. In blueberry preservation tests, the KC-KGZn composite film effectively slowed down fruit weight loss and firmness degradation, maintained soluble solids content, and preserved desirable sensory quality after 15 days of storage at 25 °C. These results indicate that the introduction of this flower-like superstructure material is an effective strategy for fabricating high-performance food packaging films, while also promoting the development of metal-polyphenol functional fillers. Download: Download high-res image (173KB) Download: Download full-size image
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Li Wang,Liwei Wang,Yuhang Que,Ling Xin,Fugang Xu
Donut-like Cu-Zn-MOF@CuNPs were synthesized via facile two-step approaches. • Cl − amplifies Cu signal via formation of highly electroactive CuCl. • Ag + inhibits the signal by competitive binding with Cl − to form AgCl. • The sensor detects Ag + with a low LOD of 1.4 nM and wide linear range. • It shows good selectivity, stability, and real water sample recovery. Silver ions (Ag + ) are highly toxic heavy metal pollutants. Conventional electrochemical methods for Ag + detection typically involve complex ionophore preparation, long preconcentration/stripping steps, or costly biorecognition agent. Here, we report a Cu-Zn-MOF supported CuNPs composite (Cu-Zn-MOF/CuNPs) for Ag + detection. The composite is prepared via a two-step room temperature mixing process. The nest-like Cu-Zn-MOF, composed of stacked two-dimensional nanosheets, provides a high specific surface area and accessible active sites for CuNPs deposition, which improves conductivity and generates a detectable redox signal. The presence of Cl − enhances the Cu redox signal due to the formation of electroactive CuCl. In the presence of Ag + , this signal enhancement is suppressed due to the competitive binding that forms AgCl precipitates. Leveraging this “amplification-inhibition” response, the Cu-Zn-MOF/CuNPs modified electrode allows for Ag + detection with two linear ranges (5 nM–100 nM and 100 nM–1100 nM), a detection limit of 1.4 nM, and recoveries ranging from 96.5% to 104.5% in spiked real water samples. The preparation procedure and detection protocol are relatively straightforward, and the sensing mechanism offers an alternative pathway for heavy metal ion detection. A donut-like Cu-Zn-MOF/CuNPs composite enables sensitive and selective electrochemical detection of Ag + via a novel amplification-inhibition mechanism: Cl − enhances the Cu redox signal through CuCl formation, while Ag + competitively binds Cl − to suppress the signal. The sensor achieves a low detection limit of 1.4 nM and good performance in real water samples. Download: Download high-res image (121KB) Download: Download full-size image
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Xiang Meng,Wang Qingyue,Li Chengjie,Wu Buyong,Qin Mengyu,Zhu Yancheng,Qian Zhiyi,Yang Zhou,Dong Shuang
In this work, we develop a new type of Zn-based electrode material, i.e., mulberry-shaped nanostructured zinc metal–organic frame/zinc sulfide (Zn-MOF/ZnS) heterojunction, which was synthesized via a green and convenient one-pot solvothermal method with common zinc salts as the metal precursor, 1,3,5-benzenetricarboxylic acid (H 3 BTC) as the organic ligand, and thioacetamide (TAA) as sulfur source. The porous structure of zinc metal–organic frame (Zn-MOF) can effectively adsorb and enrich naphthol molecules, accelerating material transport. Meanwhile, the integration of Zn-MOF with zinc sulfide (ZnS) to form the heterojunction interface can promote rapid electron transfer and improve the efficiency of electrocatalytic reactions. When used for electrochemical detection of naphthol isomers in water, the sensing performance of the resultant Zn-MOF/ZnS electrode is significantly improved in comparison with monolithic Zn-MOF and ZnS electrodes. The sensor achieves a detection linear range of 0.4–70 µM, with low detection limits of 30 nM for 1-naphthol (1-NAP) and 10 nM for 2-naphthol (2-NAP), respectively. In addition, the sensor has acceptable anti-interference ability, repeatability, and long-term stability, which can be used for the actual sensing of naphthol isomers in environmental water. This study provides new ideas and references for the development of high-performance electrode material for on-site monitoring of pollutants in water quality. Graphical
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Huaifang Teng,Songliang Liu,Dalin Xu,Cong Zhang,Guangshuo Li,Meixiang Zheng,Xuejing Cui,Xin Chen,Luhua Jiang
Palladium (Pd) is one of the most promising catalysts for oxygen reduction reaction (ORR), however its activity is limited by the excessively strong adsorption of oxygen-containing intermediates. Herein, a one-dimensional (1D) ultrafine PdMo alloy nanowire (PdMo NWs) is synthesized, which exhibits excellent ORR activity and stability in both half cells and zinc-air batteries. The mass activity ( 1.08 mA μg Pd − 1 ) and specific activity (1.74 mA cm −2 ) of PdMo NWs are 9.2 and 6.9 times higher than that of a commercial nanosized Pt/C, respectively. Especially, the zinc-air battery with the PdMo NWs cathode achieves a peak power density of 214.8 mW cm −2 , and remains stable in a 160 h durability test. DFT calculations and in-situ electrochemical Fourier-transform infrared spectroscopy characterization reveal that the introduction of Mo significantly downshifts the d -band center of Pd, inhibiting excessive adsorption of the oxygen intermediates, thereby accelerating the ORR processes. This work demonstrates a 1D ultrafine Pd-based alloy nanowire as an effective and robust electrocatalyst for the ORR, and provides direct spectroscopic evidence for alleviated adsorption of oxygen intermediates on PdMo surfaces.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·
IF 3.3
Nai-Cui Liu,Yu-Zhu Zhao,Tao Zhan,Moldir Rustem,Zhencheng Chen,Guo-Cheng Han,Xiao-Zhen Feng,Heinz-Bernhard Kraatz
Trans-resveratrol (TRA) has garnered significant attention due to its multiple pharmacological activities. This study fabricated a Zn-MOF/MWNTs-OH/GCE electrochemical detection platform for TRA detection by modifying a glassy carbon electrode (GCE) with a composite of hydroxyl-functionalized multi-walled carbon nanotubes (MWNTs-OH) and zinc-based metal-organic framework (Zn-MOF). The structure and composition of the materials were characterized using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The results indicate that the Zn-MOF/MWNTs-OH/GCE has an excellent electrochemical response to TRA, featuring a linear detection range of 1.00- 600.00 μM and a detection limit of 0.32 μM. Additionally, the detection platform exhibits good reproducibility, stability, and selectivity. In the grape skin sample detection, the recovery rate ranges from 98.48% to 105.19%, the RSD is less than 4.62%, and the accuracy of the results is verified by fluorometry.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Dan Liao,Yujie Kou,Tianxiu Du,Kai Li,Zhongfeng Li,Yong Wang
Despite a bright prospect because of intrinsic safety and low price, the commercialization of aqueous zinc-ion batteries (AZIBs) is hindered by serious issues including dendrite development, passivation and corrosion of Zn anodes. Herein, volcanic mud (VM) as a natural mineral is utilized as a protective layer of Zn anode (ZnVM@Zn). The nanoporous structure of VM can provide abundant channels for rapid migration of Zn 2+ ( t = 0.92) and regulation of Zn 2+ flux, facilitating Zn uniform deposition. Furthermore, the ZnVM protective layer possesses low desolvation activation energy (44.56 kJ mol −1 ), effectively controlling the hydrated Zn-ions desolvation and thereby inhibiting water-induced corrosion and passivation of Zn anodes. Notably, nuclear magnetic resonance (NMR) also authenticates the desolvation effect of VM. With these characteristics, ZnVM@Zn||ZnVM@Zn symmetric cell achieves a lengthy circulation of over 1600 h at 0.5 mA cm −2 . ZnVM@Zn||MnO 2 full cell retains a capacity of 185.4 mAh g −1 after 700 circulations at 1 A g −1 , with 94.8% capacity-retention. This study offers novel insights into Zn anode protection in AZIBs.
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Solar RRL
·
2026
·Vol. 10
·期 1
·e202500927
·
IF 4.7
Yu Li,Guo Lu,Jieyu Zheng,Jie Chen,Shuaibing Wang,Mengmeng Ma,Zhijie Wang,Aiwei Tang
Ensuring broad-spectrum visible-light absorption and efficient electron extraction is essential for enhancing the efficiency of photocatalytic hydrogen production. To achieve this, manipulating carrier dynamics through cocatalyst heterojunction engineering has attracted considerable concern. However, conventional narrow-bandgap Cu–In–Zn–S (CIZS) nanocrystals (NCs) typically exhibit limited photocatalytic activity due to severe exciton annihilation. Herein, two-dimensional (2D) CIZS nanobelts (NBs) were coupled with Ni 9 S 8 cocatalyst to construct a library of CIZS/Ni 9 S 8 Schottky heterojunctions synthesized via a combined colloidal one-pot and hot-injection strategy. As anticipated, the CIZS/2.0%Ni 9 S 8 heterojunction displayed the optimal photocatalytic hydrogen evolution activity of 2.75 mmol g −1 h −1 , ≈3.31 times higher than that of pristine CIZS NBs (0.83 mmol g −1 h −1 ). Experimental results uncovered that the enhanced photocatalytic performance originated from the formation of the CIZS/2.0%Ni 9 S 8 Schottky heterojunction, which facilitated efficient charge transfer from CIZS NBs to Ni 9 S 8 and hindered the return of electrons. Moreover, Ni 9 S 8 serves as active catalytic sites, significantly accelerating surface proton reduction reactions. This study provides valuable insights into the rational design and precise synthesis of colloidal multinary Cu-based chalcogenide heterojunctions for efficient photocatalytic energy conversion.
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CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 8
·10028-10034
·
IF 3.45
Dengwei Hu,Fan Zhao,Lei Miao,Zhen Zhang,Yan Wang,Hualei Cheng,Yinfeng Han,Meijuan Tian,Hongxi Gu,Rong Ma
The present work investigated the effect of the addition of V 2 O 5 and MnCO 3 on the microstructure and magnetic properties of Ni-Zn ferrite ceramic samples prepared by a conventional ceramic sintering method at different temperatures. With this aim, a series of samples were prepared by varying the loadings of V 2 O 5 -MnCO 3 (un-doped, 0.4–0.1 wt%, 0.1–0.4 wt%, 0.2–0.3 wt%, 0.3–0.2 wt%, and 0.5–0.1 wt%, denoted as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6, respectively). The initial permeability and power loss of the different Ni-Zn ferrites were investigated with respect to the sintering temperature . The V 2 O 5 and MnCO 3 dopants significantly improved the initial permeability and power loss characteristics of the Ni-Zn ferrite at frequencies ≥0.5 MHz. When sintered at 1100 °C, sample 2 showed a maximum initial permeability of 931.23 H/m at a frequency of 1 MHz combined with a minimum power loss of 339.2 kW/m 3 . Co-doping with V 2 O 5 and MnCO 3 also resulted in the sintered samples with larger average grain sizes and higher density, while the sintering temperature of Ni-Zn ferrites was significantly reduced.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·148
·
IF 36.3
Yang Zefang,Zhang Qi,Hu Chao,Tang Yougen,Li Jinchi,Wang Qi,Zhou Wanhai,Chao Dongliang,Wang Haiyan
A semisolid MnO 2 slurry electrode enables reversible MnO 2 deposition/dissolution within a CNT-percolated conductive network, achieving a high areal capacity of 60 mAh cm −2
The slurry system promotes the formation of highly conductive γ-MnO 2 and achieves uniform MnO 2 dissolution through enhanced charge transfer.
The MnO 2 slurry electrode offers strong scalability and regenerability, retaining 100% capacity after 180 cycles and reactivating inactive MnO 2 via percolation.
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