Journal of Energy Storage
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2025
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IF 9.8
Ruchun Li,Dan Zhu,Lijuan Peng,Ying Yang,Kezhen Qi,Dingsheng Yuan
The development of highly active bifunctional electrocatalysts is crucial to the sluggish oxygen reduction reaction/oxygen evolution reaction (ORR/OER) for efficient wearable Zn–air batteries (ZAB). The Fe-N x -C moieties anchored on carbon supports emerge as a desirable alternative to ORR catalysts but its OER activity suffers from low catalytic performance and stability. Herein, a N-doped carbon-encapsulated Fe 3 C and MnO nanoparticles composite (FeMn-NC) was developed using a simple one-step pyrolysis of the self-sacrificial template. The obtained FeMn-NC possesses a hierarchical porous structure with a large specific surface area and rich pyridinic N, which are favorable for the exposure of the active sites. The introduction of the Fe 3 C/MnO interface can regulate the charge redistribution to promote ORR/OER kinetics, which is confirmed by theoretical calculations. The obtained FeMn-NC exhibits an excellent bifunctional ORR/OER activity in alkaline electrolytes. The assembled liquid ZAB with the FeMn-NC as the cathode can achieve an ultrahigh specific capacity of 792.7 mAh g −1 and charge-discharged stability up to 800 h at 10 mA cm −2 (2400 cycles). Furthermore, the corresponding flexible solid-state ZAB provides a stable open-circuit voltage of 1.50 V and a specific capacity of 676.1 mAh g −1 at 1.0 mA cm −2 with good cycling stability. This work offers a simple strategy to synthesize hierarchical porous materials with highly active bifunctional properties, which can be applied in other electrochemical energy devices.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Chen Liang,Haitong Zhang,Zhifan Zhang,Lingyu Wang,Xuejing Lin,Yifan Fu,Xingjian Zhu,Shan Zhu,Jingjuan Liu
Hydrogel patches are highly promising for application in wearable sweat sensors because of their excellent sweat absorption abilities. Additionally, the hydrophilic nature of hydrogels offers an ideal platform for tackling the problem of lipid biofouling in sweat analysis. The superhydrophilic hydrogel patches can integrate the functions of rapid sweat sampling, lipid filtration, and sweat transport to the sensing region, effectively improving sensor detection efficiency and preventing electrode contamination by lipids. Herein, polyacrylamide (PAM) and polyvinyl alcohol (PVA) were selected to coat cotton cloth and produce hydrogel patches. Furthermore, inspired by mussels, catechol functional moieties were introduced to improve the hydrophilicity and lipophobicity, resulting in polydopamine-polyacrylamide (PDA-PAM) and polydopamine-polyvinyl alcohol (PDA-PVA) hydrogels. The optimal PDA-PAM hydrogel with the best anti-lipid interference ability was screened out for integration into sweat detection patches. Meanwhile, a highly sensitive sensing patch was fabricated using a conductive metal-organic framework (MOF), namely Ni-HAB (HAB = hexaiminobenzene), electrode for detecting dopamine (DA) in sweat. When combined with PDA-PAM hydrogel patches, the Ni-HAB electrode exhibits good sensitivity, anti-interference ability, and reusability. This hydrogel-assisted anti-lipid interference strategy not only allows for rapid collection and filtration of sweat, but also ensures the accuracy and durability of the conductive MOF electrodes, guaranteeing the practical application ability of wearable sensors for analyzing human sweat components
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Peng-cheng Zhao,Xiao-xing Wang,Lv-qi Xie,Zi-ting Li,Xue Li,Zi-qin Dai,Xi-yang Tang,Zhi-hong Yao,Xin-sheng Yao,Yi Dai
Oligosaccharides (OSs) are abundant in natural products (NPs), yet their rapid and effective characterization, especially for absorbed OSs, remains challenging. In this study, an enhanced data acquisition and analysis strategy using three derivative labels was proposed and successfully applied to characterize the in vitro and in vivo profiles of OSs in Mori Fructus fruit (MF). For data acquisition, Data Independent Acquisition (DIA) was performed to maximize the MS information of OSs, followed by Mass Defect Filtering (MDF) using Metabolynx XS™ to automatically exclude irrelevant ions and generate Precursor Ion List (PIL) of potential OSs. A PIL-based Data Dependent Acquisition (DDA) was subsequently implemented to obtain clear MS 2 spectra. For data analysis, fragmentation behaviors of OS reference standards were evaluated to obtain Characteristic Fragment Ions (CFIs) and Neutral Losses (NLs) that served as criteria for eliminating false-positives. Ultimately, 79 OSs (44 neutral-reducing OSs, 11 nitrogen-reducing OSs, 20 acid-reducing OSs, and 4 neutral non-reducing OSs) were characterized in MF extract. In addition, 68 OS prototypes were detected in intestinal contents and 15 OS prototypes were observed in plasma. In conclusion, this novel strategy enabled stepwise screening, classification and systematic characterization of OSs in NPs in vitro and in vivo .
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Ruxing Gao,Xixi Chen,Chao Deng,Lujing Xu,Leiyu Zhang,Chundong Zhang,Ki-Won Jun,Tiansheng Zhao,Yingju Yang
Catalytic hydrogenation of CO 2 into light olefins has gained increasing attention, nevertheless the design of an efficient catalyst with high selectivity towards light olefins is still challenging. Herein, aiming at improving the selectivity of targeted light olefins, we successfully synthesized a series of Na/MFe 2 O 4 (M = Co, Zn and Cu) spinel catalysts via hydrothermal synthesis, and tried to establish their activity-structure relationship. Among the Na/MFe 2 O 4 spinel catalysts, the Na/CoFe 2 O 4 catalyst shows superior catalytic performance, thanks to the well-crystallized CoFe 2 O 4 nanoparticle which has the good dispersibility, reducibility and carburizing ability. Moreover, compared with the traditional Na/Fe–Co catalyst obtained via co-precipitation, the formation of CoFe 2 O 4 with uniform crystal phase and smaller crystal size for Na/CoFe 2 O 4 spinel catalyst is more conducive to the formation of active and stable χ-(Co x Fe 1 − x ) 5 C 2 alloy carbide, thereby resulting in excellent catalytic activity and stability. On this basis, to further improve the C 2-4 = selectivity, we coupled the Na/CoFe 2 O 4 component with acidic zeolites (e.g., SAPO-34, MOR and Hβ), and the Na/CoFe 2 O 4 @SAPO-34 catalyst is found to possess a superior C 2-4 = selectivity of 42 % with a CO 2 conversion of 39 %. This work can provide a useful understanding of designing efficient spinel-structured bimetal catalysts for selective conversion of CO 2 into value-added light olefins.
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RAPID COMMUNICATIONS IN MASS SPECTROMETRY
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2025
·Vol. 39
·期 17
·e10077
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IF 1.7
Yuhan Li,Guangming Huang
Rationale The measurement of urinary catecholamines and total metanephrines serves as one of the primary tests in the diagnosis of pheochromocytoma and paraganglioma (PPGL). The widely adopted liquid chromatography–tandem mass spectrometry (LC–MS/MS) method, however, typically necessitates sample pretreatments and chromatographic separation prior to MS, resulting in challenges for facile and rapid screening of targets from complex matrices. Therefore, it is crucial to develop an analytical method that can rapidly and efficiently detect urinary catecholamines and total metanephrines. Methods A rapid and time-efficient procedure using solid-phase extraction (SPE) combined with pulsed direct current electrospray ionization tandem mass spectrometry (pulsed-dc-ESI-MS/MS) was validated for the specific and quantitative analysis of six urinary catecholamines and metanephrines. The SPE protocol was specifically optimized to enable direct analysis of the eluate obtained from SPE using MS/MS. All six compounds could be detected in a single complete operation. Results The method was evaluated by the determination of catecholamines and metanephrines (dopamine, epinephrine, norepinephrine, normetanephrine, metanephrine, and 3-methoxytyramine) in artificial urine samples and raw urine samples. Under the optimized experimental conditions, the limits of detection for these six analytes were in the range of 0.02–68.37 nM L −1 , using dopamine-d4 (DA-d4) and metanephrines-d3 (MN-d3) as internal standards, respectively, which achieved the detection requirements for the clinical diagnosis of PPGL. Conclusions SPE coupled with pulsed-dc-ESI-MS/MS demonstrated improved efficiency compared to existing methods, which successfully enabled the rapid screening of urinary catecholamines and total metanephrines. Therefore, we believe that this method could be potentially useful in the clinical screening of PPGL and suitable for the direct analysis of urine.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Jian Chen,Jiaying Yang,Yanbin Lu,Zhiyuan Dai,Huan Li
Okadaic acid (OA), a diarrhetic shellfish toxin, poses severe health risks to humans and causes substantial economic losses in aquaculture, creating an urgent need for rapid, sensitive, and field-deployable detection technologies for tracing its contamination in shellfish. Herein, we proposed a surface-enhanced Raman scattering (SERS) sensing method for OA in shellfish. The system was constructed by integrating Raman-active aptamer-modified gold/magnetic nanohybrids (Apt-Au/Fe 3 O 4 NHs) with a complementary sequence-modified silver nanoparticle-functionalized bacterial cellulose film (CS-Ag NPs@BC-film). Upon the introduction of OA, it competitively bound with the Apt, leaving the CS-Ag NPs@BC-film after magnetic separation, thereby inducing a reduction in the Raman signal. Sensitive quantification of OA was achieved by measuring the difference in the Raman signal, achieving a detection limit as low as 2.82 × 10 −2 nM (S/N = 3). Analysis of the spiked real samples demonstrated good accuracy and precision of the method. Compared with commercial ELISA kits, the method presented with comparable detection results while offering simplified operational workflows. These findings highlight its potential as a practical tool for monitoring hazardous contaminants in aquatic environments and ensuring seafood safety.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Yang Shao,Xidong Liu,Chun Li,Jilong Zhang,Min Luo,Diandou Xu,Lingling Ma
Currently, there is an increasing demand for simple, rapid, and accurate analytical methods for analyzing 236 U and 236 U/ 238 U isotope ratios in the swipe, nuclear accident, or environmental samples. In response to the complexities inherent in traditional methodologies and the high uncertainty associated with analytical techniques, we developed a rapid method that integrates alkali fusion with thermal ionization mass spectrometry. This method addresses the shortcomings of traditional methods, especially the issue of sample pretreatment efficiency. The efficacy and practicality of the developed method are demonstrated by eliminating the ashing process, reducing evaporation, and direct purification. After parameter optimization, the uranium recovery exceeded 80 %, and the pretreatment process was completed within 7 h for a batch of samples. We tested the method's stability and applicability by analyzing the certified and IAEA reference materials and found that it was suitable for various environmental samples. The measurement of the 236 U/ 238 U isotope ratio and 236 U concentration were achieved using the developed thermal ionization mass spectrometry method. The method was validated using IRMM 184 with an accuracy of 0.11 %. The developed pretreatment and instrumental method were applied to IAEA reference materials, and the measured 236 U/ 238 U isotope ratios and 236 U concentrations were consistent with the reported values. This method can be directly used in scenarios requiring rapid analysis and high-precision measurement of uranium isotopes.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Saleem Raza,Xiaolan Wu,Qianqian Liu,Pengfei Zhang,Pei Zhang,Xiaoxian Su,Prabhu Sengodan,Yasin Orooji,Rui Zhang
The synergistic integration of photocatalytic nanomaterials with hydrogel matrices has emerged as a promising strategy for sustainable wastewater treatment due to their biocompatibility, stability, and cost-effectiveness. In this study, a multifunctional hydrogel was fabricated through a green synthesis route by embedding Fe₃O₄@VO₂–polydopamine (PDA) composites into a sodium alginate (SA) network via a two-step cross-linking process. Fe₃O₄ nanoparticles were synthesized by co-precipitation, followed by water bath growth of Fe₃O₄@VO₂ and in situ PDA deposition to improve interfacial stability and charge transfer. The resulting Fe₃O₄@VO₂-PDA-SA/H hydrogel exhibited excellent magnetic recoverability, high photocatalytic efficiency, and structural robustness. Malachite green (MG) and tetracycline hydrochloride (TCH), representative contaminants from aquaculture wastewater, were employed as target pollutants. The composite achieved maximum photodegradation efficiencies of 98.39 % for MG and 87.03 % for TCH, with only moderate efficiency loss after five consecutive cycles (retaining 88.38 % and 61.03 % removal, respectively). Radical quenching experiments revealed that •OH and •O₂ − played dominant roles in pollutant degradation, confirming a synergistic photocatalytic mechanism. These findings demonstrate that Fe₃O₄@VO₂-PDA-SA/H not only ensures efficient and stable photocatalysis in complex aqueous environments but also offers facile recyclability, highlighting its potential as a practical material for advanced wastewater remediation.
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LANGMUIR
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2025
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IF 3.9
Jintao Tong,Shihao Zang,Jiayu Liu,Zhe Xu,Xianen Hu,Xiaojuan Bai,Xue Bai,Cheng Ma,Wei Wang,Jianbin Huang
We introduce a polymer-mediated approach for assembling binary colloidal particles into core–shell and other tunable structures with their transformation into microrotors via Janus design. By mixing polyvinylpyrrolidone (PVP)-coated polystyrene (PS) microparticles with polymer-free silica nanoparticles, we exploit electrostatic repulsion to maintain dispersion until ionic screening permits a close approach. At this point, PVP acts as a molecular glue, selectively bridging bare silica onto PS surfaces to yield PS@SiO2 core–shell structures. The number ratio of PS to SiO2 dictates the assembly outcome. Excess PS leads to shared silica shells that link multiple cores into chains and colloidal gels, while excess silica leads to complete shell coverage and crystallization of microspheres into close-packed hexagonal lattices. Applying this method to Janus PS/Pt particles enables regioselective SiO2 coating on the PS hemisphere only, producing asymmetric “PS@SiO2”/Pt Janus microspheres that assemble into dimers and trimers through directional binding on the silica-coated hemispheres only. Remarkably, in 5% H2O2, the resulting Janus dimers transform into self-propelled microrotors that exhibit sustained rotation, powered by the catalytic decomposition of H2O2 on the exposed platinum hemispheres. These findings present a simple yet powerful strategy for the controlled synthesis of functional colloidal superstructures as well as stimulus-responsive micromachines.
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ACS Sensors
·
2025
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IF 9.1
Zuorong Huang,Quanquan Tang,Jing He,Lei Wu,Fengmin Liu,Xishuang Liang,Bin Wu,Mingliang Fu,Geyu Lu
Diesel engines in the field of transportation are one of the important sources of carbon dioxide (CO2) emissions, and incomplete combustion and complex working conditions make it difficult to accurately calculate their CO2 emissions by using the intake volume. In addition, the high temperature and harsh environment of exhaust gas also put higher requirements on the response speed, stability, and high-temperature resistance of the sensor. In this study, Co3O4 was doped into the auxiliary phase Na2CO3 as a catalyst and stabilizer to improve the sensor sensitivity, and solid electrolyte NASICON was doped to improve the sensor response speed. The results show that when the doping ratio of Na2CO3 and NASICON is the same as 10 wt %, the response to CO2 of 5000 ppm can reach −67 mV, and the full-range second-level response to CO2 is realized. The detection range is up to 0–180,000 ppm, the sensitivity is −64 mV/decade, the sensor has good selectivity to CO2, the response change in the range of 20–98% RH is negligible, and the response change in 60 days is only −8.66%. This sensor had good reproducibility. In addition, the in situ on-board CO2 sensing probe and test system were developed. The sensor response was calibrated against the measurement values of standard instruments on the entire vehicle. Based on the calibration results, a regression curve was established and the vehicle was tested; the test results and the standard instrument test value deviation are basically less than 10% to verify the practicality of the component in the exhaust gas detection.
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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Liwei Su,Shihao Guo,Junjie Wang,Hao Wang,Shixiong Wu,Hao Wu,Lianbang Wang
Silicon-based materials are considered promising next-generation anode candidates for lithium-ion batteries due to their high theoretical capacity and natural abundance. However, severe volume expansion (∼300 %) during cycling and intrinsically low electrical conductivity significantly hinder their practical applications. Surface coating modification has been recognized as an effective strategy for silicon-based materials. However, common coating materials, such as C and metal oxides, are limited by weak interfacial bonding, insufficient stress buffering, and cracking of the coating layer, making it challenging to construct uniform, durable, and multifunctional shells. This work constructs a double core-shell structured nanocomposite, Si@Co 2 SiO 4 @C. The composite leverages the buffering and conductive properties of the double shells, as well as the catalytic effect of newly generated Co 0 , to facilitate reversible lithiation of the Li-Si-O compounds, thereby achieving high capacity and long-term cycling stability. As a result, the composite delivers a reversible capacity of 1296 mA h g −1 after 200 cycles at a current density of 300 mA g −1 . The role of the double-shell structure is investigated through electrochemical measurements and structure characterization. This double core-shell structure, utilizing a transition metal silicate intermediate layer, provides a novel approach to developing high-performance Si-based anodes with distinct advantages for balancing high capacity and structural stability.
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ChemSusChem
·
2025
·Vol. 18
·期 15
·e202500148
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IF 6.6
Chong Ni,Xuyong Feng,Yuanyun Dou,Wentao Wu,Hongfa Xiang
Surface coating is an efficient way to reduce side reactions between cathode materials and electrolytes, thus enhancing the cycle stability of cathode materials. In this study, a novel surface-coating strategy based on the melt curing process is introduced, which forms an ionic conductive LiAlO 2 layer on the surface of LiCoO 2 /LiNi 0.5 Mn 1.5 O 4 cathode materials and enhances the cycle stability of these cathode materials. Comprehensive characterizations, including scanning electron microscopy, energy dispersive spectrometer, and transmission electron microscopy (TEM) confirm the uniformity and thin LiAlO 2 coating. Electrochemical performance tests show better cycle performance of LiCoO 2 with 1% LiAlO 2 coating. An 85% capacity can be retained over 200 cycles at 1C and 4.5 V cutoff, compared to 61% for uncoated LiCoO 2 . For LiNi 0.5 Mn 1.5 O 4 , the coated sample shows 94.5% capacity retention after 300 cycles at 1C, while the capacity of the uncoated sample decays to 64.6% under the same condition. These findings underscore the effectiveness and universality of this surface-coating strategy. Graphical In this study, a novel surface-coating strategy based on a melt curing process is proposed, which forms an ion-conductive LiAlO 2 coating layer on the surface of LiCoO 2 cathode materials. TEM combined with EDS, XPS, etc. confirms the uniform thin layer LiAlO 2 coating, while the electrochemistry measurements prove the high stability of LiCoO 2 with LiAlO 2 coating.
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