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Synergistic enhancement of Pt electrocatalyst stability and activity in hydrogen oxidation reaction by polyoxometalate and carbon dot co-boosting 多金属氧酸盐与碳点协同增强氢氧化反应中Pt电催化剂的稳定性和活性。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.07.033

Fei-Yang Yu , Zhong-Ling Lang , Xian Wang , Jing Sun , Yu-Chen Liu , Hua-Qiao Tan , Jun-Jie Ge , Yang-Guang Li , Zhen-Hui Kang

{"title":"Synergistic enhancement of Pt electrocatalyst stability and activity in hydrogen oxidation reaction by polyoxometalate and carbon dot co-boosting","authors":"Fei-Yang Yu , Zhong-Ling Lang , Xian Wang , Jing Sun , Yu-Chen Liu , Hua-Qiao Tan , Jun-Jie Ge , Yang-Guang Li , Zhen-Hui Kang","doi":"10.1016/j.scib.2025.07.033","DOIUrl":"10.1016/j.scib.2025.07.033","url":null,"abstract":"<div><div>Pt-based catalysts are prone to oxidation and CO poisoning during the hydrogen oxidation reaction (HOR), leading to deactivation, which has presented significant challenges for the application of proton exchange membrane fuel cells (PEMFC). Here, we propose a dual-protection strategy with the advantages of Pt-polyoxometalates (POMs) and carbon dots (CDs) to synthesize an advanced POMs-CDs based electrocatalyst, Pt-SiW<sub>12</sub>-CDs, with Pt clusters dispersed on SiW<sub>12</sub>-CDs substrates. It exhibited exceptional HOR performance, achieving a mass activity of 10.36 A mg<sub>Pt</sub><sup>−1</sup> at an overpotential of 50 mV, which is over 54 times greater than that of Pt/C (0.19 A mg<sub>Pt</sub><sup>–1</sup>). These catalysts also display impressive stability and CO tolerance. By employing X-ray absorption fine structure (XAFS) spectra, transient photovoltage (TPV), transient potential scanning (TPS), and density functional theory (DFT) calculation, the in-depth investigation suggested the muti-roles of SiW<sub>12</sub> and CDs for synergistic enhancement of Pt electrocatalyst stability and activity in HOR process. CDs act as bridges, effectively and rapidly transferring protons and electrons to SiW<sub>12</sub> from Pt clusters. CDs can effectively coordinate with Pt, regulating its electronic structure while pre-occupying Pt sites, thus hindering CO adsorption on Pt. The reduced SiW<sub>12</sub> efficiently transfers electrons to Pt, inhibiting the oxidation of Pt. Additionally, SiW<sub>12</sub> also serves as the driving force, maintaining the rapid progression of the HOR process. The dual-protection strategy provides new ideas and directions for design of efficient and stable heterogeneous catalyst.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 19","pages":"Pages 3154-3163"},"PeriodicalIF":21.1,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144843986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Biomaterials mimicking immunological synapses for enhanced T cell activation in CAR-T therapy 模拟免疫突触的生物材料在CAR-T治疗中增强T细胞活化。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.04.041

Yan-Ruide Li , Zeyang Liu , Enbo Zhu

引用次数: 0

Inheritance and differentiation of the Ordos Basin under multidirectional convergence of plates 板块多向辐合作用下鄂尔多斯盆地的继承与分异

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.07.018

Yiwen Ju , Wei Wang , Chengzao Jia , Zhanli Ren , Dengfa He , Zhangxin Chen , S.M. Farouq Ali , Liangliang Jiang

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Asthenospheric flow and lithospheric erosion driving the outward growth of the northeastern Tibetan Plateau

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.08.007

Chutian Shu , Xiaoping Long , Stephen F. Foley , Kaizhang Yu , Zhuoying Zhang , Zheng-Xiang Li , Luc S. Doucet , Qiang Xu

{"title":"Asthenospheric flow and lithospheric erosion driving the outward growth of the northeastern Tibetan Plateau","authors":"Chutian Shu , Xiaoping Long , Stephen F. Foley , Kaizhang Yu , Zhuoying Zhang , Zheng-Xiang Li , Luc S. Doucet , Qiang Xu","doi":"10.1016/j.scib.2025.08.007","DOIUrl":"10.1016/j.scib.2025.08.007","url":null,"abstract":"<div><div>The northeastern (NE) Tibetan Plateau is extruding eastward at a rapid rate (∼15 mm a<sup>−1</sup>), but the role of the upper mantle in this process remains unclear. Early-Miocene primary melilitites from the leading edge of the extruding plateau provide critical insights into the upper mantle dynamics. Geochemical and Sr–Nd–Pb–Os isotopic data, supported by experimental melt comparisons, reveal that these melilitites originate from a hybrid source of CO<sub>2</sub>-bearing mantle source, probably dominated by peridotite and pyroxenite/wehrlite lithologies. This is consistent with carbonate minerals found in mantle xenoliths (peridotite + pyroxenite) entrained within the melilitites. Geothermobarometric calculations indicate magma generation at 116–135 km depth, below the lithosphere-asthenosphere boundary (∼112 km) constrained by xenoliths and seismic data. Isotopic data trace the carbon origin to a carbonated lithosphere associated with the 150-km-thick eastern tectonic blocks. Recent seismological studies suggest that eastward-flowing asthenosphere beneath the northeastern Tibetan Plateau is actively eroding the thicker lithosphere (150–200 km) of the eastern blocks. We propose that this asthenospheric flow not only thins the lithosphere but also mobilizes carbon from the eastern carbonated lithosphere into generating the melilitite, likely via edge-driven convection. The resulting melilitite compositions is therefore a petrological record of these dynamic processes. This study highlights the critical role of upper mantle processes—astenospheric flow and lithospheric erosion—in driving the eastward extrusion of the Tibetan Plateau. It also underscores the importance of carbon mobilization in understanding mantle carbon cycling during continental collision.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 19","pages":"Pages 3255-3264"},"PeriodicalIF":21.1,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144938062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

β-hydroxybutyrate enhances mitochondrial function via mitochondrial-derived vesicles β-羟基丁酸通过线粒体来源的囊泡增强线粒体功能。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.05.011

Feixiang Bao , Dingxin Zeng , Jiahui Xiao , Lingyan Zhou , Xingguo Liu

引用次数: 0

First occurrence of phytoliths in pterosaurs—evidence for herbivory 植物岩首次在翼龙中发现——草食的证据。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.06.040

Shunxing Jiang , Xinjun Zhang , Yan Wu , Mingcong Zheng , Alexander W.A. Kellner , Xiaolin Wang

引用次数: 0

Tailoring interfacial proton-coupled electron transfer via electrolyte engineering for high-selectivity H2O2 production 通过电解质工程定制界面质子耦合电子转移，用于高选择性H2O2生产。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.08.036

Haiyan Wang , Yumei Qiao , Lei Tang , Chaoyi Yu , Huimeng Huang , Hucheng Zhang , Jianji Wang , Hongliang Jiang , Chunzhong Li

{"title":"Tailoring interfacial proton-coupled electron transfer via electrolyte engineering for high-selectivity H2O2 production","authors":"Haiyan Wang , Yumei Qiao , Lei Tang , Chaoyi Yu , Huimeng Huang , Hucheng Zhang , Jianji Wang , Hongliang Jiang , Chunzhong Li","doi":"10.1016/j.scib.2025.08.036","DOIUrl":"10.1016/j.scib.2025.08.036","url":null,"abstract":"<div><div>The targeted modulation of electric double layer through electrolyte design has emerged as a transformative strategy for controlling electrochemical reaction pathways. While the oxygen reduction reaction (ORR) represents a paradigmatic example where electrolyte effects are pronounced, the atomic-scale mechanisms underlying electrolyte-mediated regulation of interfacial microenvironments remain incompletely understood. Here, we elucidate how acetonitrile (ACN) additive tailors the alkaline ORR pathway toward selective H<sub>2</sub>O<sub>2</sub> electrosynthesis on carbon catalysts. Through integrated molecular dynamics simulations, <em>in situ</em> spectroscopy, and electrochemical impedance analysis, we demonstrate that ACN optimizes the three-phase interface to enhance ORR activity, and restructures interfacial water environments by displacing water in cationic solvation-shell and disrupting H-bonding continuity of water molecules. These synergistic effects effectively mitigate interfacial proton/electron flooding while optimizing proton-coupled electron transfer kinetics, resulting in dramatically enhanced H<sub>2</sub>O<sub>2</sub> selectivity (90%) compared to the unmodified KOH system (60%). By establishing the structure-activity relationship of electrolyte composition with interfacial microenvironment and reaction pathway, this work provides a novel strategy for sustainable H<sub>2</sub>O<sub>2</sub> electrosynthesis.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 19","pages":"Pages 3164-3172"},"PeriodicalIF":21.1,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144938117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Key challenges and strategies for promoting eye health in China 促进中国眼睛健康的主要挑战和战略。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.07.037

Xueli Yang , Yiqing Wang , Wenjuan Zhuang , Wenfang Zhang , Zhaohui Li , Yanming Huang , Hong Zhang , Hong Yan , Haokun Zhang , Yi Lei , Weiyun Shi , Youxin Chen , Xufang Sun , Hua Yan

引用次数: 0

Anomalous topological pumping in hyperbolic lattices 双曲格中的反常拓扑抽运。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.07.040

Hao Yuan , Weixuan Zhang , Na Sun , Fengxiao Di , Wenhui Cao , Xiangdong Zhang

{"title":"Anomalous topological pumping in hyperbolic lattices","authors":"Hao Yuan , Weixuan Zhang , Na Sun , Fengxiao Di , Wenhui Cao , Xiangdong Zhang","doi":"10.1016/j.scib.2025.07.040","DOIUrl":"10.1016/j.scib.2025.07.040","url":null,"abstract":"<div><div>Hyperbolic lattices—non-Euclidean regular tilings with constant negative curvature—provide a unique framework to explore curvature-driven topological phenomena inaccessible in flat geometries. While recent advances have focused on static hyperbolic systems, the dynamical interplay between curved space and time-modulated topology remains uncharted. Here, we study the topological pumping in hyperbolic lattices, discovering anomalous phenomena with no Euclidean analogs. Notably, 2D hyperbolic pumping emulates 8D quantum Hall physics, transcending conventional dimensional constraints. We further demonstrate that pumping trajectories are governed by a synergy of Chern numbers (1st to 4th) and periodic boundary condition (PBC) configurations. Remarkably, specific PBCs trigger a periodic topological oscillation, where quantized transport collapses into time-recurrent cycles. Experimentally, time-modulated hyperbolic circuits validate both high-dimensional quantum Hall signatures and PBC-dependent topological dynamics. Our work pioneers the exploration of topological pumping in hyperbolic lattices, showcasing the transformative impact of non-Euclidean geometry on topological phenomena.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 19","pages":"Pages 3146-3153"},"PeriodicalIF":21.1,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144881749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Kunpeng, birth of giant-grain rice germplasm 鲲鹏，巨粒稻种质诞生。

IF 21.1 1区综合性期刊

Science Bulletin Pub Date : 2025-10-15 DOI: 10.1016/j.scib.2025.04.030

Xiaoqi Yu , Wei Xie , Ling Ma , An Wang , Guangheng Zhang , Jiang Hu , Li Zhu , Qiang Zhang , Qing Li , Min Hu , Lan Shen , Qian Qian , Deyong Ren

引用次数: 0