Journal of Energy Storage
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2026
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IF 10.7
Huimin Feng,Xinxin Pi,Yanhui Li,Yunkai Wang,Mengjin Wen,Chengrui Wang,Chunlei Zhang,Yan He
The improvement of rechargeable zinc-air batteries is still limited by the sluggish oxygen electrochemistry at the air cathode, where both the oxygen reduction and oxygen evolution processes need to be accelerated. In this work, a Ni/Ni 3 C composite was obtained by thermal treatment using ammonia-activated carbon nanotubes as the conductive backbone and coal tar pitch as a supplementary carbon precursor. Ni and Ni 3 C nanoparticles are anchored on the nanotube framework, and part of their surface is wrapped by graphitized carbon. Such a multiphase architecture builds efficient electron-transport channels, reinforces the coupling between the Ni-based species and the carbon matrix, and improves structural robustness under electrochemical conditions. The catalyst therefore shows strong bifunctional oxygen electrocatalytic activity, giving a half-wave potential of 0.86 V for ORR and an overpotential of 250 mV at 10 mA·cm −2 for OER, together with satisfactory durability. When assembled as the air cathode of a rechargeable zinc-air battery, it affords an open-circuit voltage of about 1.42 V, a peak power density of 195 mW·cm −2 , and stable cycling for more than 200 h at 5 mA·cm −2 . DFT calculations indicate that nitrogen-containing interfacial sites reshape the local charge distribution and improve the adsorption and conversion of oxygen intermediates, which is favorable for both ORR and OER.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 3.1
Zhilong Zhu,Hongxiang Ou,Honglai Xue,Fang Zhu
To enhance the oil–water separation performance and stability of melamine sponge (MS), stearic acid-grafted attapulgite (SA-g-OATP) was synthesized via silanization and amidation grafting. The hydrophobic sponge (MS-POS) was fabricated by dip-coating MS in a polydimethylsiloxane (PDMS) solution containing SA-g-OATP. Characterization confirmed a grafting rate of 20.73%. The synergy between SA-g-OATP and PDMS constructed a hierarchical “micron skeleton-nanoparticle” rough structure. The optimal sample, MS-POS1-1, exhibited superhydrophobicity with a water contact angle of 159.34° and achieved high adsorption capacities for oils and solvents, reaching 112.33 g/g for palm oil. In gravity-driven tests, it showed separation efficiencies above 98.34% for oil–water mixtures and effectively separated water-in-oil emulsions. The sponge demonstrated robust stability, retaining hydrophobicity after 40 cycles of tape-peeling or sandpaper abrasion, and withstanding prolonged immersion in pH 2–12 solutions. The adsorption capacity remained above 89.70% after 20 consecutive adsorption-extrusion cycles. Developed from low-cost materials via a simple process, MS-POS exhibits high adsorption capacity, excellent selectivity, and robust stability, showing significant potential for oily wastewater remediation.
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ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Li Ao,Zhao Yibin,Du Yuexin,Xu Hui,Zhang Xiehaoran,Li Yanbin,Wu Mengyao,Chou Lien-Yang
In multienzyme cascade systems, overall efficiency is often limited by the uncontrolled diffusion and dilution of substrates and intermediates in bulk solution. Inspired by the cooperative roles of hydrated cellular compartments and selectively permeable membranes, we report a biomimetic enzyme immobilization strategy based on a hollow microsphere with a multidimensionally permselective membrane to regulate mass transfer and sustain an efficient reaction microenvironment. The membrane, composed of charged polyelectrolytes, serves as a dynamic soft interface, enabling cooperative transport regulation through apparent size-selective retention and electrostatic interactions. Furthermore, a three-enzyme cascade reaction demonstrates that tuning the surface charge drives self-assembly of compartmentalized microspheres. The proximity-enhanced assembly reduces intermediate diffusion distances, thereby enhancing cascade activity. This work establishes a membrane-mimetic design strategy based on polyelectrolyte soft interfaces, providing a modular platform for constructing biomimetic catalytic systems and offering insights for rational engineering of multicompartmental artificial cells.
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PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2026
·Vol. 98
·期 30
·22495-22501
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IF 7.3
Hou Wenhao,Xing Jiaqi,Zhu Siyu,Ju Yun,He Jing,Qiao Lina,Zhang Hong,Jiang Jie
Microdroplets are highly efficient microreactors, yet
conventional
mass spectrometry typically evaluates their reactivity as an ensemble
average, obscuring the independent catalytic roles of positively and
negatively charged microdroplets. In this study, we developed a microdroplet
separation mass spectrometry method. By separating mixed-charge microdroplet
plumes prior to MS sampling, this approach enables the independent,
online analysis of positively and negatively charged microdroplets.
The performance was validated by combining experiments and simulations.
Application of this methodology to perfluorooctanoic acid (PFOA) degradation
revealed that negatively charged microdroplets exhibit a higher degradation
efficiency than positive counterparts. Mechanistic investigations,
supported by radical trapping and density functional theory, reveal
that negative interfacial charge effectively stabilizes the transition
state, facilitating a hydroxyl radical (•OH)-driven degradation
pathway. This polarity-dependent enhancement proved universal across
varying reaction conditions and other perfluorinated compounds with
diverse chain lengths and terminal functional groups. Moreover, we
rationally modulated the microenvironment via negative voltage application
and Fenton’s reagent supplementation, boosting the PFOA degradation
from approximately 38% to 83%. These findings demonstrate that the
developed separation-MS method is a reliable tool for resolving mixed-charge
microdroplet behaviors and provides insights for reasonably elucidating
and optimizing charge-regulated microdroplet interfacial chemistry.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Yan Jiang,Tongtong Zhang,Qiong Wu,Jingwen Zhao,Fengna Xi,Jianmin Wu
Developing highly sensitive electrochemiluminescence (ECL) systems is crucial for the analysis of tumor biomarkers. Herein, mildly oxidized porous silicon (MOPSi) was firstly employed to immobilize cerium oxide (CeO 2 ) nanozymes to amplify the ECL response of the luminol-dissolved oxygen (DO) system in a near-neutral condition for Alpha-fetoprotein (AFP) immunoassay. MOPSi nanoparticles possess a unique Si core/SiOₓ shell structure that enables the stable anchoring and dispersion of CeO 2 via Ce-O-Si bonds. Notably, CeO 2 -MOPSi/ITO exhibits a markedly higher ECL intensity than CeO 2 /ITO and MOPSi/ITO owing to the robust heterostructure formed between CeO 2 and MOPSi. The CeO 2 -MOPSi heterointerface enables a self-cascade catalytic process that comprises efficient oxygen reduction to produce superoxide anion radicals (O 2 •- ) and H 2 O 2 , followed by the in-situ conversion of the generated H 2 O 2 into additional O 2 •- . The abundant O 2 •- reacts with luminol radical anion (L •- ), leading to an enhanced ECL response. Moreover, an AFP immunosensor was fabricated by anchoring antibodies onto MOPSi surface. The proposed sensor shows a broad linear range from 10 fg/mL to 10 ng/mL with a detection limit of 3.3 fg/mL. This work provides a novel strategy for integrating the MOPSi carrier with nanozymes to develop advanced ECL systems for high-performance bioanalysis. Download: Download high-res image (123KB) Download: Download full-size image
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zhiren Guo,Xinyue Liu,Jinlei Song,Hansheng Li,Dongxiang Zhang,Ting Liu,Xinyuan Li,Antonio Juan Dos Santos-García,Xiyan Xu,Jiatao Zhang
Conventional type-II heterojunctions broaden visible-light absorption and enhance charge separation but weaken redox potentials via charge migration, reducing thermodynamic driving force for surface catalysis. A novel direct Z -scheme heterojunction photocatalyst was constructed by decorating B 4 C with TiO 2 nanoparticles for efficient solar-driven degradation of 1,2-benzisothiazolin-3-one and other biocidal pollutants. The optimized TiO 2 /B 4 C photocatalyst achieved 98% BIT degradation within 4 h under simulated solar irradiation, with an apparent rate constant of 1.00 h −1 , approximately 38 and 6.2 times higher than those of pristine B 4 C and TiO 2 , respectively. The incorporation of B 4 C broadened visible-light absorption and promoted interfacial charge separation, while the formation of an internal electric field enabled a direct Z -scheme charge-transfer pathway that preserved strong redox potentials. As a result, photogenerated electrons accumulated on B 4 C and generated O 2 •− radicals, whereas holes retained on TiO 2 produced • OH radicals, jointly driving the oxidative degradation of pollutants. Electron Spin Resonance and radical scavenger analyses confirmed O 2 •− and • OH as the key reactive species. Density functional theory (DFT) calculations further elucidated the interfacial charge-transfer mechanism and the degradation pathway of BIT. This work demonstrates that the TiO 2 /B 4 C Z -scheme heterojunction provides an efficient strategy for solar-driven photocatalytic removal of biocidal pollutants, providing insights into rational design of high-performance photocatalysts for environmental remediation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zemin Li,Hui Wang,Yawen Bo,Yanjun Wang,Sheng Liu,Jingxian Hua,Yawei Gu,Qihan Gong,Yichang Pan,Rujing Hou
The separation of hexane isomers from light naphtha is critical to advancing energy-efficient refining and supporting environmental sustainability. However, this application requires membranes capable of precise molecular discrimination. In this work, we focus on hard acid–hard base coordinated Al-/Zr-MOFs due to their exceptional stability and tunable pore environments. Through combined thermodynamic and kinetic evaluations, four Al-MOFs (KMF-1, CAU-23, MIL-160, Al-bttotb) and Zr-MOF(UiO-66) emerged as promising candidates. UiO-66 was ultimately identified as the optimal platform due to its excellent membrane compactness and techno-economic potential. We subsequently employed a mixed-linker strategy to achieve Ångstrom-level pore size engineering in UiO-66, the resulting UiO-66-NH 2 membrane exhibited superior discrimination between linear/mono-branched (n-hexane, 3-methylpentane) and di-branched (2,2-dimethylbutane) isomers, achieving an ideal selectivity of 4.8—a performance that exceeds most current state-of-the-art MOF membranes. Pervaporation experiments with a simulated C 5 –C 6 naphtha mixture further confirmed the ability of the membrane to efficiently enrich ethylene cracking precursors, while the retentate effectively concentrated high-octane gasoline additives. These results underscore the strong industrial potential of Ångstrom-precision engineered MOF membranes for simultaneous production of high-value chemical feedstocks and premium fuel components from light naphtha.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Hongji Li,Mingqian Sun,Fariza Hanim Suhailin,Dan Zhang,Tingting Sun,Zimo Yuan,Dandan Wang,Wei Sun,Changming Li
This work presents a novel flexible imprinted membrane-made surface-enhanced Raman scattering (SERS) for selective detection of microcystins-LR (MC-LR) in water. Silver nanocubes decorated with titanium dioxide (Ag NCs@TiO 2 ) nanoparticles (NPs) are dispersed on a flexible polydimethylsiloxane (PDMS) membrane as the SERS substrate. The PDMS exhibits excellent optical properties, ensuring the detection accuracy. A photo-initiated polymerization process is employed to maintain the molecular integrity of MC-LR while improving the resistance of the SERS substrates to air-induced oxidation. By optimizing the reaction condition, optimal SERS imprinted membrane is applied to selective detection of practical samples. The characterization results indicate that the Ag NCs@TiO 2 molecular imprinted membranes (ATP-MIMs) present accurate detection property to the MC-LR molecules from complex solution. Rapid detection within around 1 min is achieved by the as-prepared flexible molecularly imprinted SERS sensor. The limit of detection of MC-LR is 0.0313 μg·L −1 and the ATP-MIMs exhibit a high stability of more than 86.6 % after 28 days. It clearly exhibits from results that ATP-MIMs hold significant potential applications to trace MC-LR detection and provide a novel approach to the water quality monitoring.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Huahong Peng,Tianzhu Hong,Yunxia Wang,Xiaosa Zhang,Xinxue He,Dongsheng Cao,Ao Hou,Shuai Wang,Jianchun Xie,Xibo Yan
We construct multicompartmental nanoparticles with tunable compositions and sizes. • Nanoparticles quantitatively and positionally load multi-enzymes in compartments. • Enzyme amount and distribution regulate cross-compartmental cascade reactions. • Cross-compartmental cascade reasons manipulate and modulate particle locomotion. • Cell-mimetic nanoparticles show potential as microreactors or micromotors. The cell-mimetic multicompartment-in-compartment architecture holds considerable potential for many applications. However, customizing sub-micron multicompartmental colloidal systems capable of spatiotemporal control over signaling cascade and energy transmission across internal compartmentalized domains remains challenging. Herein, we report on a continuous nanoprecipitation-based tandem/parallel combined process to induce a multistage assembly, including polymer aggregation, nanoparticle aggregation and polymer deposition, to spontaneously form multicompartmental polymer nanoparticles with tuneable compositions and dimensions. This general and straightforward approach enables the controllable construction of homogeneous or heterogeneous internal compartments in multicompartmental nanoparticles and allows quantitative loading of diverse cargos (e.g., proteins, dyes) with precise localization within distinct compartmentalized domains (internal compartments or intermembrane space). With selective encapsulation of multiple enzymes in designated compartments, the multicompartment-in-compartment nanostructuration could conveniently control chemical signaling transduction across compartmentalized domains, thereby achieving effective regulation of cross-compartmental enzymatic cascade reactions in multicompartmental nanoparticles. This cell-mimetic multicompartmental colloidal system could perceive surrounding chemical signaling (e.g., glucose) and carry out cascade reaction-triggered energy transmission across its multi-organelle-like compartments for the controllable execution of self-generated chemical gradient-driven autonomous movement. This work provides a robust strategy for designing and constructing versatile multicompartmental colloidal materials with tailorable properties and functions, showing appealing potential for application in various fields. Download: Download high-res image (191KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xuyang Qin,Wenqiang Xu,Ning Wang,Peng Chen,Huanyu Zhu,Mildred Quintana,Hongqiang Li,Shaoxian Song
A magnetic Zr-MOF@Fe 3 O 4 material for rapid phosphorus removal was developed. • A maximum phosphate uptake of 141.0 mg P g −1 was achieved. • Phosphate adsorption mainly involved ion exchange and inner-sphere coordination. • DFT calculation elucidated the orbital hybridization between Zr and O atoms. Environmental remediation of phosphorus-containing wastewater is crucial for ecological protection and sustainable resource development. However, existing adsorbents generally suffer from slow phosphate uptake kinetics, limited adsorption capacity and difficult solid-liquid separation. Here, a magnetic Fe 3 O 4 -modified zirconium-based metal–organic framework (Zr–MOF@Fe 3 O 4 ) was synthesized via a simplified hydrothermal process for highly selective phosphate adsorption. Outperforming most reported adsorbents, Zr–MOF@Fe 3 O 4 –1.0 with the porous framework and abundant active sites significantly enhanced phosphate adsorption kinetics, achieving an adsorption rate of 173.3 mg P g –1 h −1 within 0.5 h and a maximum adsorption capacity of 141.0 mg g −1 . Experimental results and density functional theory calculations indicated that the efficient phosphate capture was primarily attributed to synergistic effects of electrostatic adsorption, ion exchange with surface hydroxyl groups, and inner-sphere complexation via Zr–O–P bonds. Excellent anti-anion interference performance, coupled with robust cycling stability and rapid magnetic separation, collectively highlight the application potential of Zr–MOF@Fe 3 O 4 for phosphate removal from complex wastewaters. Download: Download high-res image (225KB) Download: Download full-size image
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Particuology
·
2026
·
IF 4.7
Xiang Li,Konghai Xia,Hui Yang,Yubo Liu,Baozhong Ma,Yongqiang Chen,Chengyan Wang
A novel process was proposed for efficient extraction from low-grade rubidium ore. • The pickling process enhanced extraction efficiency and reduced waste generation. • A simple low-temperature sulfidation process enables transformation of Rb-containing phase. • The leaching residue was able to prepare high-purity silicon products. Rubidium is an important strategic metal. In this study, rubidium was efficiently extracted and separated from low-grade rubidium ore via stepwise acid leaching and crystallization. The main phase composition of low-grade rubidium ore was determined as muscovite, calcite, and quartz. This paper adopted hydrochloric acid pickling to remove calcium, and then extracted the valuable elements by sulfation-water leaching. The removal of calcium reached 99.3% under the optimum pickling conditions of 70 °C, 0.5 mol/L HCl, 1.5 h, and 2 mL/g Liquid-solid (L/S) ratio. The average particle size of low-grade rubidium after pickling was decreased from 5.74 μm to 4.84 μm. Compared with direct sulfation, the process combined with pickling and sulfation could increase the extraction of rubidium by around 10%. The production of CaSO 4 waste residues was avoided. The systematic sulfation and water leaching experiments indicated that the extraction of rubidium reached 85.4% under the optimal conditions. However, 92.8% of aluminum and 87.1% of potassium were also extracted simultaneously. Subsequently, the preliminary separation of rubidium and potassium could be achieved by crystallization, which laid the foundation for the subsequent preparation of high-purity rubidium products. The content of SiO 2 in leaching residue reached 94.4%. Download: Download high-res image (403KB) Download: Download full-size image
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Reihaneh Jalali Shahrbabaki,Mahdi Feizpour,Hadi Barzegar-Bafrooei,Kaixin Song
Silicate-based microwave dielectric ceramics are increasingly important for next-generation communication systems owing to their low permittivity, high quality factor, and thermal stability. In this study, the influence of mechanical activation on the sintering behavior, structural evolution, and microwave dielectric performance of cordierite ceramics was systematically investigated, with particular emphasis on the minor and major activation conditions represented by 2 h and 32 h milling durations. The powders were subsequently sintered at 1400–1430 °C. Prolonged mechanical activation significantly accelerated densification, enabling near-full density (≥99% TD) to be achieved at 1410–1420 °C, whereas the 2 h milled powders required higher sintering temperatures (1420–1430 °C). Raman spectroscopy revealed subtle local structural variations after sintering, whereas X-ray diffraction and Williamson–Hall analyses confirmed largely comparable long-range crystallographic characteristics. Quantitative SEM-based grain-size analysis involving a statistically significant population of grains demonstrated that prolonged milling primarily reduced grain-size variability and improved microstructural uniformity, while producing only minor changes in the final average grain size. Microwave dielectric measurements showed that the dielectric response evolved from a porosity-controlled regime at lower temperatures toward a microstructure-sensitive regime near full densification. While ε r steadily increased with increasing density for all milling conditions, Q×f exhibited non-monotonic behavior. The highest Q×f value of 50,582 GHz was obtained at 1420 °C for the specimen prepared from the 2 h milled powder, despite its slightly lower density compared with the 32 h counterpart. This finding demonstrates that maximum densification and improved structural homogeneity alone are insufficient to optimize microwave dielectric performance. The optimum dielectric properties corresponded to ε r ≈ 5.35–5.57 and τ f values near −23 ppm/°C. The stability of τ f together with the preserved structural characteristics indicates that intrinsic lattice contributions remained largely unchanged, whereas the variations in Q×f were governed predominantly by processing-induced microstructural evolution, particularly the grain-boundary-related effects associated with the finer grain structure.
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