MICROCHIMICA ACTA
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2025
·Vol. 192
·期 12
·1-10
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IF 5.3
Yao Qingda,Zhang Guiyun,Fang Qiaoling,Ju Huan,Ni Jiancong,Yang Weiqiang
Electrochemiluminescence (ECL) has emerged as an important analytical method, but the scarcity of effective emitters significantly hinders its broader application. In this work, an amine-rich silica isoporous membrane (A-SIM) was fabricated on an indium tin oxide (ITO) electrode based on a modified Stöber-solution growth approach using an anionic template. Subsequently, the negatively-charged gold nanoclusters (AuNCs) were electrophoretically encapsulated within the positively-charged nanochannels of A-SIM, resulting in a robust aggregation-induced ECL (AIECL) platform of AuNCs@A-SIM/ITO. When compared to other configurations, such as homogeneous dispersion, drop-casting on the electrode, and encapsulation within unmodified SIM, the aggregated AuNCs encapsulated within A-SIM exhibited a remarkable AIECL effect, achieving an ECL efficiency of 17.89%. In contrast, the presence of cyanide ions (CN − ) leads to the specific etching of AuNCs, resulting in a diminished AIECL intensity, which enables the highly sensitive and selective detection of CN − . Practical results demonstrate that the AuNCs@A-SIM/ITO platform is sensitive and reliably stable in its ECL responses, attributing to the nanochannel-confined AIECL mechanism as well as the anti-fouling properties of SIM. This research not only offers a practical approach for achieving robust nanoconfined AIECL of AuNCs but also provides new insights into the AIECL mechanism, encouraging further exploration in this area. Graphical
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Scientific Reports
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2025
·Vol. 15
·期 1
·1-12
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IF 3.9
Nguyen Van Nhat,Nguyen An-Giang,Phung Thi Viet Bac,Nguyen Phi Long
Carbon-based supercapacitor electrodes derived from biomass have recently garnered significant attention due to their low cost, natural abundance, and environmental sustainability. In this study, charcoal was pretreated using a simple ultrasonic method and was employed as the active electrode material in both three-electrode and symmetric supercapacitor configurations. To further enhance electrochemical performance, a sustainable and dual-functional strategy was implemented by introducing methylene blue, a redox-active additive, into an aqueous sodium chloride electrolyte. Structural and morphological characterizations revealed that charcoal possessed a highly porous architecture with preserved plant-based vascular channels, facilitating efficient electrolyte penetration and ion transport. Electrochemical analyses demonstrated that the incorporation of methylene blue significantly enhanced charge storage through a synergistic combination of electric double-layer capacitance and pseudocapacitive behavior. The optimal device, utilizing the MB35 electrolyte composition, delivered a high specific capacitance of 212.23 F g –1 at 0.5 A g –1 , an energy density of 15.34 Wh kg –1 at a power density of 350 W kg –1 , and excellent cycling stability, retaining 91.3% of its initial capacitance after 2000 cycles and 84.3% after 5000 cycles at the high loading mass of 2 mg cm − 2 . This work presents a cost-effective route for fabricating high-performance biomass-derived supercapacitors while offering a novel approach for the reutilization of dye pollutants in sustainable energy storage applications.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Liu Mingda,Zhang Zhichao,Li Chenyu,Jin Sen,Zhu Kunlei,Fan Shoushan,Li Jia,Liu Kai
The methanol oxidation reaction is the bottleneck for direct methanol fuel cells. Unfortunately, the state-of-the-art Pt-based catalysts suffer heavily from the CO poisoning problem. Isolating Pt atoms in a material can avoid CO poisoning. However, single-atom Pt catalysts alone are inert towards methanol oxidation reaction. Here, we report high-entropy alloyed single-atom Pt catalysts, in which single-atom Pt sites are alloyed with non-noble elements in a high-entropy structure. This catalyst not only possesses active Pt sites but also inherits the ability of single-atom Pt to resist CO poisoning. Consequently, the catalyst shows a notable mass activity of 35.3 A mg −1 at only 2.3 at% Pt and maintains high activity even after operation for 180,000 s. Both experimental and theoretical results reveal that the high-entropy structure induces a synergistic effect, wherein the elements coordinated around single-atom Pt sites effectively remove adsorbed CO from Pt. This mechanism facilitates the key reaction steps of methanol oxidation reaction and avoids CO poisoning. This work presents a high-entropy alloyed single-atom strategy to realize efficient and durable methanol oxidation reaction catalysis with low costs.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-23
·
IF 15.7
Zhang Xianzhu,Jiang Wei,Wu Xinyu,Xie Chang,Zhang Yi,Li Liying,Gu Yuqing,Hu Zihao,Zhai Xinrang,Liang Renjie,Zhang Tao,Sun Wei,Ye Jinchun,Wei Wei,Wang Xiaozhao,Hong Yi,Zhang Shufang,Cai Youzhi,Zou Xiaohui,Hu Yihe,Ouyang Hongwei
Current approaches for bone repair predominantly target localized delivery of growth factors that are aimed at the coupling of angiogenesis and osteogenesis. However, delayed revascularization and regeneration of critical-sized bone defects are still challenging. In this study, we engineer an ossification center-like organoid (OCO) that consist of an inner-core bone morphogenetic and neurotrophic spheroid generated via MSCs-loaded 3D printing, alongside the interstitially distributed outer-shell proangiogenic neurotrophic phase. Our results demonstrate that collective implantation of OCOs achieves rapid bone bridging with successive OC-like bone ossicles formation across the bone defect in a “divide-and-conquer” way. Single-cell RNA sequencing analysis unveils a developmentally mimicking stem cell community that dominated with Krt8 + skeletal stem cells (SSCs) is uniquely recruited by the pro-regenerative in-situ organoid fusion and maturation. Particularly noteworthy is the specific expansion of Krt8 + SSCs concomitant with the simultaneous reduction of Has1 + migratory fibroblasts (MFs) post-OCO implantation. Furthermore, cross-species comparisons employing machine learning reveal high resemblance of the relative Krt8 + SSCs/Has1 + MFs composition in bone regeneration with that in public data from developmental bone tissues. Our findings advocate an approach akin to “divide-and-conquer” utilizing engineered OC-like organoids for prompt regeneration of large-sized bone defects.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 18
·1-16
·
IF 2.8
Yang Zaizhi,Shen Yalong,Zhu Yuan,Jiang Xiaoming,Liu Rui,Yang Zhen,Wang Shouliang,Xu Dong
Flash sintering has revolutionized the field of advanced ceramic preparation with the low heating temperature and extremely short sintering time. The difference of doped ions radius can influence the defect structure and resistivity of the sample through lattice distortion, subsequently altering the parameters and dielectric properties of flash sintering samples. By flash sintering technology, co-doped TiO 2 ceramics with the acceptor ions (Mg 2+ , Ca 2+ , Sr 2+ , Ba 2+ ) and donor ions (Nb 5+ ) were successfully prepared at 1100 °C for 24 min. According to the blackbody radiation model, Mg 2+ and Nb 5+ co-doped TiO 2 ceramics exhibit the highest surface temperature at the moment of flash sintering, approximately 1852 °C. Additionally, the co-doped TiO 2 ceramics with Ba 2+ and Nb 5+ ions exhibit the strongest polarization effect, with a dielectric constant above 10 5 . The acceptor ions with larger ions increase oxygen vacancies by enhancing the stability of defect complexes. The excellent giant dielectric properties are attributed to the combined action of the electron-pinned defect dipole effect and the internal barrier layer capacitor effect.
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IMMUNOGENETICS
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2025
·Vol. 77
·期 1
·1-16
·
IF 2.9
Guo Jinyang,Du Xinyu,Wu Jiaqi,Lan Boting,Yang Ning,Su Peng
Positive regulatory domain member (PRDM) family proteins play important roles in nervous system development, neural stem cell proliferation and differentiation, and central nervous system inflammation. The unique evolutionary position of the lamprey ( Lethenteron reissneri ) as one of the oldest jawless vertebrates makes it an ideal animal model for understanding vertebrate evolution. Nevertheless, the evolutionary characteristics of PRDM genes have not yet been demonstrated in lampreys. In this study, we identified PRDM1 , 4 , 5 , 8 , 12 , 14 , and 15 genes in the lamprey genomes and also investigated their evolutionary relationships through phylogenetic analysis. The characterization of PRDM genes appears to be conserved among vertebrates, as indicated by protein structural domain, motif, and 3D structure analysis. Genomic synteny analysis revealed that lamprey PRDM neighbor genes are significantly different from those of jawed vertebrates. Real-time quantitative results demonstrate that the PRDM gene family may be involved in immune defense and spinal cord injury (SCI) repair. This study not only enriches the understanding of PRDM gene evolution but also provides new clues for the Lr-PRDMs’ roles in immune defense and SCI .
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Food and Bioprocess Technology
·
2025
·
IF 5.8
Liu Zhenbin,Luo Jia,Zhang Jiayi,Liu Wenchao,Li Hongbo,Hu Liangbin,Wang Dong,Hengchao E,Sun Zhenying,Xia Yu,Weng Rui,Mo Haizhen
Multi-phase microwave drying (MMD) uses microwaves as a heat source while adjusting chamber pressure to dry materials, enabling solid-liquid-gas phase transitions of water. This method significantly shortens drying time and reduces energy consumption. This study explores MMD’s feasibility as an efficient and high-quality drying technique for shiitake mushrooms, comparing it with hot air drying (HAD), heat pump drying (HPD), freeze drying (FD), and microwave vacuum drying (MVD). The results show MMD dries mushrooms in 105 minutes, achieving speeds 5, 7, and 13 times faster than HAD, HPD, and FD, respectively. MMD also significantly reduces shrinkage (14.0%) and improves rehydration (519.4%), surpassing HAD, HPD, and MVD by 66.79%, 60.99%, and 269.53%. Additionally, MMD better preserves volatile compounds and the mushrooms’ original flavor, reducing losses due to overheating. Nutritionally, MMD retains higher levels of amino acids (34.92 mg/g) and nucleotides (160.31 mg/100 g), boosting umami flavor (786.96 g MSG/100 g). This method combines microwave drying’s efficiency with freeze drying’s quality benefits.
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RARE METALS
·
2025
·
IF 11
Wang Long-Yan,Fan De-Qi,Li Yi,Zhao Cheng-Xiao,Yang Xiao-Fei
Metalloporphyrins featuring structurally tunable aromatic macrocycles and versatile metal coordination sites are widely recognized as promising molecular catalysts for photocatalytic carbon dioxide reduction. However, their catalytic performances are constrained by rapid recombination of photogenerated charge carriers, insufficient charge transfer efficiency, and structural instability caused by molecular aggregation. Anchoring metalloporphyrins onto conductive substrates, in particular ultrathin two-dimensional (2D) nanostructures, can effectively accelerate interfacial charge transport efficiency, thereby improving photocatalytic activity toward CO 2 reduction. In this work, a novel 2D/2D heterojunction was designed and synthesized, which can serve as a highly efficient molecular catalyst for visible-light-driven CO 2 reduction. The abundant Co centers and N-sites in the assembled cobalt-coordinated porphyrin nanobelts can greatly enhance the adsorption and conversion of CO 2 . Meanwhile, the presence of few-layer Ti 3 C 2 MXene nanosheets enables the accelerated interfacial charge transport from photoexcited metalloporphyrin to Ti 3 C 2 MXene. Rapid electron transfer is verified by Kelvin probe force microscopy (KPFM), in situ attenuated total reflectance-Fourier transform infrared (ATR-FTIR), and irradiated X-ray photonelectron spectroscopy (XPS). As expected, compared to pristine porphyrin, the metalloporphyrin/Ti 3 C 2 MXene heterojunction shows a 12.5-fold increase in the photocatalytic activity for CO 2 reduction to CO. Graphical abstract
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JOURNAL OF POROUS MATERIALS
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2025
·
IF 3.2
Wang Ke,Shi Xiang,Yuan Hong
The utilization of biomass as a feedstock for aviation kerosene production serves to alleviate demand pressure on petroleum resources. In this work, commercial hydroxyapatite (HAP) was used as a support to fabricate a series of mono- and bimetallic Pt-Ni catalysts via impregnation. These catalysts were then evaluated for the decarboxylation of oleic acid under a non-hydrogen atmosphere. The XRD and TEM analyses revealed that the Pt metal particles were highly dispersed, whereas the Ni particles exhibited a tendency toward aggregation with increasing loading. Furthermore, Pt-Ni bimetallic particles exhibited aggregation with elevated Ni content. Combined NH 3 -TPD and Py-IR characterization indicated that the 1.5Pt2Ni/HAP bimetallic catalyst possessed appropriate acidity(5.18 cm 3 /g STP) and abundant Lewis acid sites, as evidenced by a Brønsted-to-Lewis ratio of 0.32. Catalytic results demonstrated that under CO 2 atmosphere at 340 °C and 18 bar for 6 h, the 1.5Pt2Ni/HAP catalyst achieved complete conversion of oleic acid and the yield of C 8 -C 17 alkanes reached as high as 85.0%.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Fang Zhenyuan,Li Xiang,Bai Yajie,Zhang Yuhui,He Guandi,Pang Shuai,Xia Fan,Peng Daoling,Zhang Xiqi,Jiang Lei
Ideal laminar membrane reactors (LMR) necessitate the rational construction of 2D nanoconfined channels and regulation of microenvironment. The intrinsic structure-activity relationship of laminar membrane reactors essentially remains unclear. Herein, amorphous/crystalline HTiNbO 5-X nanosheets (NS) with abundant oxygen vacancy (V O ) are successfully prepared and stacked as 2D sub-nanoconfined membrane flow reactors with different interlayer spacings. When the interlayer spacing is decreased to 11.0 Å, the representative HTiNbO 5-X membrane exhibits impressive conversion of ≈ 100% within 26.6 s and turnover number of up to 306.42 for the esterification of benzyl alcohol at 23 °C. The combination of structural characterizations and theoretical calculations reveals that the synergistic effect of V O and sub-nanoscale confinement greatly promotes the adsorption and orbital symmetry matching of reactants, and reduces the overall energy barrier. Furthermore, the HTiNbO 5-X LMR is accessible for other alcohol derivatives, indicating the efficient and green synthesis of acetate ester flavours under mild conditions. This work demonstrates the promising potential of the metal oxide nanosheets to create inorganic laminar membrane reactors for continuous organic synthesis.
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Science China-Chemistry
·
2025
·
IF 9.7
Ma Jingqi,Yang Junpu,Lu Huangjie,Xu Tingrui,Hou Huiliang,Scalia Raffaele,Lin Jian
Understanding the fundamental properties of actinide-based materials is pivotal in unlocking new solutions for challenges in nuclear waste management. In this work, we showcase a novel thorium cluster ( Th-npc ) that exhibits an extremely rare Th–N bond capping the square antiprismatic Th 4+ metal center. Remarkably, Th-npc exhibits both photochromic and radiochromic behaviors under UV and X-ray radiation, respectively, allowing for distinct, measurable colorimetric shifts that facilitate a red-green-blue (RGB) radiation dosimetry method. The integration of Th-npc with a custom-built optoelectronic device enables on-site radiation dosimetry, offering the advantages of simple operation and rapid data acquisition. Additionally, this work pioneers the application of actinide materials in photothermal conversion, opening new avenues for the strategic utilization of thorium-based compounds.
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CHINESE JOURNAL OF POLYMER SCIENCE
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2025
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IF 4
Zhu Yu,Wen Shuai,Li Hui,Zhuang Tao,Li Lu,Liu Qiang,Yan Shou-Ke
Living cationic polymerization of 4-acetoxystyrene (STO) was conducted in CH 2 Cl 2 at −15 °C using a dicumyl chloride (DCC)/SnCl 4 / n -Bu 4 NBr initiating system. Impurity moisture initiation was inhibited by adding proton trap 2,6-di-tert-butylpyridine (DTBP), and the controlled initiation of DCC was confirmed by 1 H nuclear magnetic resonance ( 1 H-NMR) spectroscopy and matrix-assisted laser desorption ionization time-of-flight mass (MALDI-TOF-MS) spectrometry. The polymerization kinetics were analyzed to for optimizing the polymerization rate. Allyl-telechelic PSTOs (allyl-PSTO-allyl) with molecular weight ( M n ) range of 3540–7800 g/mol and narrow molecular weight dispersity ( M w / M n ) about 1.25 were prepared through nucleophilic substitution with allyltrimethylsilane (ATMS) at approximately 40% monomer conversion. The experimental results indicate that the substitution efficiency of ATMS increased with higher ATMS concentration, temperature, and extended reaction time. Nearly unity ally-functionality for allyl-PSTO-allyl was achieved by adding sufficient SnCl 4 prior to the substitution.
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