Pub Date : 2025-01-30DOI: 10.1016/j.scib.2024.10.034
Wei Lv , Zilei Shen , Junlin Liu , Xudong Li , Fang Ding , Dongyue Zhang , Licheng Miao , Xuefeng Lyu , Ruijie Li , Miaomiao Wang , Yiming Li , Jingwen Meng , Chao Xu
In this study, we successfully synthesized a δ-MnO2 cathode with O vacancies, encapsulated by C derived from pyromellitic acid, using a facile hydrothermal method followed by annealing in an Ar atmosphere. The cathode’s structural stability and charge transfer kinetics are enhanced by inhibiting the formation of the by-product Zn4SO4(OH)6·4H2O, regulating the Mn valence state, and suppressing the Jahn–Teller effect through the synergy of C encapsulation and O vacancies. This results in remarkable electrochemical performance, including a large capacity of 421.2 mAh g−1 at 0.1 A g−1, a high specific energy density of 595.53 Wh kg−1, and exceptional long-cycle life stability with 90.88% over 4000 cycles at 10 A g−1, together with superior coulombic efficiency (∼100%) in pure ZnSO4 electrolyte. Moreover, the cathode materials demonstrate specific antitumor efficacy. In brief, this work introduces an in situ synthetic C encapsulated δ-MnO2 with O vacancies expected to be applied in both large-scale energy storage and biomedicine.
在本研究中，我们采用一种简便的水热法，成功合成了一种具有 O 空位的 δ-MnO2 阴极，该阴极由从焦麦饭石酸中提取的 C 封装，随后在氩气环境中退火。通过抑制副产物 Zn4SO4(OH)6-4H2O的形成、调节 Mn 的价态以及通过 C 封装和 O 空位的协同作用抑制 Jahn-Teller 效应，提高了阴极的结构稳定性和电荷转移动力学。这使得该材料具有卓越的电化学性能，包括在 0.1 A g-1 条件下具有 421.2 mAh g-1 的大容量，595.53 Wh kg-1 的高比能量密度，以及在 10 A g-1 条件下 4000 次循环中 90.88% 的超长循环寿命稳定性，同时在纯 ZnSO4 电解质中具有卓越的库仑效率（100%）。此外，这种阴极材料还具有特定的抗肿瘤功效。简而言之，这项研究介绍了一种原位合成的 C 封装δ-MnO2（具有 O 空位），有望应用于大规模储能和生物医学领域。
{"title":"In situ synthetic C encapsulated δ-MnO2 with O vacancies: a versatile programming in bio-engineering","authors":"Wei Lv , Zilei Shen , Junlin Liu , Xudong Li , Fang Ding , Dongyue Zhang , Licheng Miao , Xuefeng Lyu , Ruijie Li , Miaomiao Wang , Yiming Li , Jingwen Meng , Chao Xu","doi":"10.1016/j.scib.2024.10.034","DOIUrl":"10.1016/j.scib.2024.10.034","url":null,"abstract":"<div><div>In this study, we successfully synthesized a δ-MnO<sub>2</sub> cathode with O vacancies, encapsulated by C derived from pyromellitic acid, using a facile hydrothermal method followed by annealing in an Ar atmosphere. The cathode’s structural stability and charge transfer kinetics are enhanced by inhibiting the formation of the by-product Zn<sub>4</sub>SO<sub>4</sub>(OH)<sub>6</sub>·4H<sub>2</sub>O, regulating the Mn valence state, and suppressing the Jahn–Teller effect through the synergy of C encapsulation and O vacancies. This results in remarkable electrochemical performance, including a large capacity of 421.2 mAh g<sup>−1</sup> at 0.1 A g<sup>−1</sup>, a high specific energy density of 595.53 Wh kg<sup>−1</sup>, and exceptional long-cycle life stability with 90.88% over 4000 cycles at 10 A g<sup>−1</sup>, together with superior coulombic efficiency (∼100%) in pure ZnSO<sub>4</sub> electrolyte. Moreover, the cathode materials demonstrate specific antitumor efficacy. In brief, this work introduces an <em>in situ</em> synthetic C encapsulated δ-MnO<sub>2</sub> with O vacancies expected to be applied in both large-scale energy storage and biomedicine.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 203-211"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643677","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}
Pub Date : 2025-01-30DOI: 10.1016/j.scib.2024.06.001
Min Ning , Qinyan Li , Ya Wang , Qingmao Li , Yonghong Tao , Fan Zhang , Fengyi Hu , Liyu Huang
{"title":"Alternative splicing drives the functional diversification of a bHLH transcription factor in the control of growth and drought tolerance in rice","authors":"Min Ning , Qinyan Li , Ya Wang , Qingmao Li , Yonghong Tao , Fan Zhang , Fengyi Hu , Liyu Huang","doi":"10.1016/j.scib.2024.06.001","DOIUrl":"10.1016/j.scib.2024.06.001","url":null,"abstract":"","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 153-156"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141329979","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}
Pub Date : 2025-01-30DOI: 10.1016/j.scib.2024.11.017
Rongshou Zheng , Shuhang Wang , Guo Zhao , Wenqiang Wei , Ning Li
{"title":"Rare tumor list provide vast opportunities for novel drug development in China","authors":"Rongshou Zheng , Shuhang Wang , Guo Zhao , Wenqiang Wei , Ning Li","doi":"10.1016/j.scib.2024.11.017","DOIUrl":"10.1016/j.scib.2024.11.017","url":null,"abstract":"","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 132-134"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142738085","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}
The sequestration of trace hexafluoropropylene (C3F6) is a critical yet formidable task in the production of high-purity perfluoropropane (C3F8), an important perfluorinated electronic specialty gas (F-gas) in the advanced electronics industry. Traditional adsorbents struggle with uneven, low-pressure uptake and compromises in selectivity. This work utilizes aperture size-electrostatic potential matching within a robust metal–organic framework (Al-PMA) to facilitate selective, reversible binding of C3F6 while excluding larger C3F8 molecules. The presence of bridging hydroxyl groups (μ2-OH) in Al-PMA creates positive electrostatic potential traps that securely anchor C3F6 through strong hydrogen bonding, evidenced by in-situ infrared and 19F magic angle spinning nuclear magnetic resonance spectroscopy. Breakthrough experiments demonstrate the efficient removal of trace C3F6 from C3F8 under ambient conditions, achieving C3F8 purity exceeding 99.999%. The scalability of Al-PMA synthesis, remarkable stability, and exceptional performance highlight its potential as a promising adsorbent for industrial C3F6/C3F8 separations.
{"title":"Deep purification of perfluorinated electronic specialty gas with a scalable metal–organic framework featuring tailored positive potential traps","authors":"Wei Xia , Zhijie Zhou , Liangzheng Sheng , Lihang Chen , Fang Zheng , Zhiguo Zhang , Qiwei Yang , Qilong Ren , Zongbi Bao","doi":"10.1016/j.scib.2024.10.031","DOIUrl":"10.1016/j.scib.2024.10.031","url":null,"abstract":"<div><div>The sequestration of trace hexafluoropropylene (C<sub>3</sub>F<sub>6</sub>) is a critical yet formidable task in the production of high-purity perfluoropropane (C<sub>3</sub>F<sub>8</sub>), an important perfluorinated electronic specialty gas (F-gas) in the advanced electronics industry. Traditional adsorbents struggle with uneven, low-pressure uptake and compromises in selectivity. This work utilizes aperture size-electrostatic potential matching within a robust metal–organic framework (Al-PMA) to facilitate selective, reversible binding of C<sub>3</sub>F<sub>6</sub> while excluding larger C<sub>3</sub>F<sub>8</sub> molecules. The presence of bridging hydroxyl groups (<em>μ</em><sub>2</sub>-OH) in Al-PMA creates positive electrostatic potential traps that securely anchor C<sub>3</sub>F<sub>6</sub> through strong hydrogen bonding, evidenced by <em>in-situ</em> infrared and <sup>19</sup>F magic angle spinning nuclear magnetic resonance spectroscopy. Breakthrough experiments demonstrate the efficient removal of trace C<sub>3</sub>F<sub>6</sub> from C<sub>3</sub>F<sub>8</sub> under ambient conditions, achieving C<sub>3</sub>F<sub>8</sub> purity exceeding 99.999%. The scalability of Al-PMA synthesis, remarkable stability, and exceptional performance highlight its potential as a promising adsorbent for industrial C<sub>3</sub>F<sub>6</sub>/C<sub>3</sub>F<sub>8</sub> separations.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 232-240"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589693","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}
Pub Date : 2025-01-30DOI: 10.1016/j.scib.2024.11.026
Lei Li , Chaoxi Cui , Run-Wu Zhang , Zhi-Ming Yu , Yugui Yao
Despite the rapid progress in the study of planar Hall effect (PHE) in recent years, all the previous works only showed that the PHE is connected to local geometric quantities, such as Berry curvature. Here, for the first time, we point out that the PHE in magnetic Weyl semimetals is directly related to a global quantity, namely, the Chern number of the Weyl point. This leads to a remarkable consequence that the PHE observation predicted here is robust against many system details, including the Fermi energy. The main difference between non-magnetic and magnetic Weyl points is that the latter breaks time-reversal symmetry , thus generally possessing an energy tilt. Via semiclassical Boltzmann theory, we investigate the PHE in generic magnetic Weyl models with energy tilt and arbitrary Chern number. We find that by aligning the magnetic and electric fields in the same direction, the trace of the PHE conductivity contributed by Berry curvature and orbital moment is proportional to the Chern number and the energy tilt of the Weyl points, resulting in a previously undiscovered quantized PHE plateau by varying the Fermi energy. We further confirm the existence of PHE plateaus in a more realistic lattice model without symmetry. By proposing a new quantized physical quantity, our work not only provides a new tool for extracting the topological character of the Weyl points but also suggests that the interplay between topology and magnetism can give rise to intriguing physics.
{"title":"Planar Hall plateau in magnetic Weyl semimetals","authors":"Lei Li , Chaoxi Cui , Run-Wu Zhang , Zhi-Ming Yu , Yugui Yao","doi":"10.1016/j.scib.2024.11.026","DOIUrl":"10.1016/j.scib.2024.11.026","url":null,"abstract":"<div><div>Despite the rapid progress in the study of planar Hall effect (PHE) in recent years, all the previous works only showed that the PHE is connected to local geometric quantities, such as Berry curvature. Here, for the first time, we point out that the PHE in magnetic Weyl semimetals is directly related to a global quantity, namely, the Chern number of the Weyl point. This leads to a remarkable consequence that the PHE observation predicted here is robust against many system details, including the Fermi energy. The main difference between non-magnetic and magnetic Weyl points is that the latter breaks time-reversal symmetry <span><math><mrow><mi>T</mi></mrow></math></span>, thus generally possessing an energy tilt. Via semiclassical Boltzmann theory, we investigate the PHE in generic magnetic Weyl models with energy tilt and arbitrary Chern number. We find that by aligning the magnetic and electric fields in the same direction, the trace of the PHE conductivity contributed by Berry curvature and orbital moment is proportional to the Chern number and the energy tilt of the Weyl points, resulting in a previously undiscovered quantized PHE plateau by varying the Fermi energy. We further confirm the existence of PHE plateaus in a more realistic lattice model without <span><math><mrow><mi>T</mi></mrow></math></span> symmetry. By proposing a new quantized physical quantity, our work not only provides a new tool for extracting the topological character of the Weyl points but also suggests that the interplay between topology and magnetism can give rise to intriguing physics.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 187-192"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-30DOI: 10.1016/j.scib.2024.11.039
Hua Jin , Mingyang Li , Xiyu Wang , Lu Yang , Xinjie Zhong , Zihan Zhang , Xiaotong Han , Jingjing Zhu , Mengyi Li , Songlin Wang , Simon C. Robson , Guangyong Sun , Dong Zhang
Hepatic ischemia–reperfusion injury (HIRI) is an important cause of liver injury following liver transplantation and major resections, and neutrophils are the key effector cells in HIRI. Double-negative T regulatory cells (DNT) are increasingly recognized as having critical regulatory functions in the immune system. Whether DNT expresses distinct immunoregulatory mechanisms to modulate neutrophils, as in HIRI, remains largely unknown. In this study, we found that murine and human DNT highly expressed CD39 that protected DNT from extracellular ATP-induced apoptosis and generated adenosine in tandem with CD73, to induce high levels of neutrophil apoptosis. Furthermore, extracellular adenosine enhanced DNT survival and suppressive function by upregulating survivin and NKG2D expression via the A2AR/pAKT/FOXO1 signaling pathway. Adoptive transfer of DNT ameliorated HIRI in mice through the inhibition of neutrophils in a CD39-dependent manner. Lastly, the adoptive transfer of A2ar-/- DNT validated the importance of adenosine/A2AR signaling, in promoting DNT survival and immunomodulatory function to protect against HIRI in vivo. In conclusion, purinergic signaling is crucial for DNT homeostasis in HIRI. Augmentation of CD39 or activation of A2AR signaling in DNT may provide novel therapeutic strategies to target innate immune disorders.
{"title":"Purinergic signaling by TCRαβ+ double-negative T regulatory cells ameliorates liver ischemia–reperfusion injury","authors":"Hua Jin , Mingyang Li , Xiyu Wang , Lu Yang , Xinjie Zhong , Zihan Zhang , Xiaotong Han , Jingjing Zhu , Mengyi Li , Songlin Wang , Simon C. Robson , Guangyong Sun , Dong Zhang","doi":"10.1016/j.scib.2024.11.039","DOIUrl":"10.1016/j.scib.2024.11.039","url":null,"abstract":"<div><div>Hepatic ischemia–reperfusion injury (HIRI) is an important cause of liver injury following liver transplantation and major resections, and neutrophils are the key effector cells in HIRI. Double-negative T regulatory cells (DNT) are increasingly recognized as having critical regulatory functions in the immune system. Whether DNT expresses distinct immunoregulatory mechanisms to modulate neutrophils, as in HIRI, remains largely unknown. In this study, we found that murine and human DNT highly expressed CD39 that protected DNT from extracellular ATP-induced apoptosis and generated adenosine in tandem with CD73, to induce high levels of neutrophil apoptosis. Furthermore, extracellular adenosine enhanced DNT survival and suppressive function by upregulating survivin and NKG2D expression via the A2AR/pAKT/FOXO1 signaling pathway. Adoptive transfer of DNT ameliorated HIRI in mice through the inhibition of neutrophils in a CD39-dependent manner. Lastly, the adoptive transfer of <em>A2ar</em><sup>-/-</sup> DNT validated the importance of adenosine/A2AR signaling, in promoting DNT survival and immunomodulatory function to protect against HIRI <em>in vivo</em>. In conclusion, purinergic signaling is crucial for DNT homeostasis in HIRI. Augmentation of CD39 or activation of A2AR signaling in DNT may provide novel therapeutic strategies to target innate immune disorders.</div></div>","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":"70 2","pages":"Pages 241-254"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11749161/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142805841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-30DOI: 10.1016/j.scib.2025.01.051
Wenkai Zhu, Kaiyou Wang
{"title":"Aharonov-Anandan phases in a van der Waals antiferromagnet CrPS<sub>4</sub>.","authors":"Wenkai Zhu, Kaiyou Wang","doi":"10.1016/j.scib.2025.01.051","DOIUrl":"https://doi.org/10.1016/j.scib.2025.01.051","url":null,"abstract":"","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":""},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143381408","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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