结构化学最新文献

{"title":"A light-powered molecular pump achieving transmembrane concentration gradient","authors":"Man Wu, Chuandong Jia","doi":"10.1016/j.cjsc.2024.100452","DOIUrl":"10.1016/j.cjsc.2024.100452","url":null,"abstract":"","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100452"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic two-dimensional covalent organic frameworks via ‘wine rack’ design","authors":"Xi Zhou, Shengyao Wang","doi":"10.1016/j.cjsc.2024.100464","DOIUrl":"10.1016/j.cjsc.2024.100464","url":null,"abstract":"","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100464"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Covalent organic framework ionomers for medium-temperature fuel cells","authors":"Ping Liu, Fei Yu","doi":"10.1016/j.cjsc.2024.100465","DOIUrl":"10.1016/j.cjsc.2024.100465","url":null,"abstract":"","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100465"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organooxotin and cobalt/manganese heterometallic nanoclusters exhibiting single-molecule magnetism","authors":"Jun-Jie Fang, Yun-Peng Xie, Xing Lu","doi":"10.1016/j.cjsc.2025.100515","DOIUrl":"10.1016/j.cjsc.2025.100515","url":null,"abstract":"","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100515"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microenvironment regulation of anode-electrolyte interface enables highly stable Zn anodes","authors":"Lin Peng,&nbsp;Xincheng Liang,&nbsp;Zelong Sun,&nbsp;Xingfa Chen,&nbsp;Dexin Meng,&nbsp;Renshu Huang,&nbsp;Qian Liu,&nbsp;Huan Wen,&nbsp;Shibin Yin","doi":"10.1016/j.cjsc.2025.100542","DOIUrl":"10.1016/j.cjsc.2025.100542","url":null,"abstract":"<div><div>H₂O-induced side reactions and dendrite growth occurring at the Zn anode-electrolyte interface (AEI) limit the electrochemical performances of aqueous zinc ion batteries. Herein, methionine (Met) is introduced as an electrolyte additive to solve the above issues by three aspects: Firstly, Met is anchored on Zn anode by amino/methylthio groups to form a H₂O-poor AEI, thus increasing the overpotential of hydrogen evolution reaction (HER); secondly, Met serves as a pH buffer to neutralize the HER generated OH⁻, thereby preventing the formation of by-products (e.g. Zn₄SO₄(OH)₆⋅<em>x</em>H₂O); thirdly, Zn²⁺ could be captured by carboxyl group of the anchored Met through electrostatic interaction, which promotes the dense and flat Zn deposition. Consequently, the Zn||Zn symmetric cell obtains a long cycle life of 3200 h at 1.0 mA cm⁻², 1.0 mAh cm⁻², and 1400 h at 5.0 mA cm⁻², 5.0 mAh cm⁻². Moreover, Zn||VO₂ full cell exhibits a capacity retention of 91.0% after operating for 7000 cycles at 5.0 A g⁻¹. This study offers a novel strategy for modulating the interface microenvironment of AEI via integrating the molecular adsorption, pH buffer, and Zn²⁺ capture strategies to design advanced industrial-oriented batteries.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100542"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel open-framework chalcogenide photocatalysts: Cobalt cocatalyst valence state modulating critical charge transfer pathways towards high-efficiency hydrogen evolution","authors":"Haiyan Yin ,&nbsp;Abdusalam Ablez ,&nbsp;Zhuangzhuang Wang ,&nbsp;Weian Li ,&nbsp;Yanqi Wang ,&nbsp;Qianqian Hu ,&nbsp;Xiaoying Huang","doi":"10.1016/j.cjsc.2025.100560","DOIUrl":"10.1016/j.cjsc.2025.100560","url":null,"abstract":"<div><div>Negatively charged open-framework metal sulfides (NOSs), taking advantages of the characteristics of excellent visible light absorption, easily exchanged cations, and abundant active sites, hold significant promise as highly efficient photocatalysts for hydrogen evolution. However, their applications in photocatalytic hydrogen evolution (PHE) are infrequently documented and the corresponding photocatalytic mechanism has not yet been explored. Herein, we excavated a novel NOS photocatalyst of (Me₂NH₂)₆In₁₀S₁₈ (MIS) with a three-dimensional (3D) structure, and successfully incorporated divalent Co(II) and metal Co(0) into its cavities <em>via</em> the convenient cation exchange-assisted approach to regulate the critical steps of photocatalytic reactions. As the introduced Co(0) allows for more efficient light utilization and adroitly surficial hydrogen desorption, and meanwhile acts as the ‘electron pump’ for rapid charge transfer, Co(0)-modified MIS delivers a surprising PHE activity in the initial stage of photocatalysis. With the prolonging of illumination, metal Co(0) gradually escapes from MIS framework, resulting in the decline of PHE performance. By stark contrast, the incorporated Co(II) can establish a strong interaction with MIS framework, and simultaneously capture photogenerated electrons from MIS to produce Co(0), which constructs a stable photocatalytic system as well as provides additional channels for spatially separating photogenerated carriers. Thus, Co(II)-modified MIS exhibits a robust and highly stable PHE activity of ∼4944 μmol/g/h during the long-term photocatalytic reactions, surpassing most of the previously reported In–S framework photocatalysts. This work represents a breakthrough in the study of PHE performance and mechanism of NOS-based photocatalysts, and sheds light on the design of guest confined NOS-based photocatalysts towards high-efficiency solar-to-chemical energy conversion.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100560"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancements in photocatalytic hydrogen peroxide synthesis: Overcoming challenges for a sustainable future","authors":"Liyang Qin ,&nbsp;Luna Wu ,&nbsp;Jinlin Long","doi":"10.1016/j.cjsc.2025.100545","DOIUrl":"10.1016/j.cjsc.2025.100545","url":null,"abstract":"<div><div>Hydrogen peroxide (H₂O₂) is a crucial, eco-friendly oxidizing agent with a wide range of industrial, environmental, and biomedical applications. Traditional production methods, such as the anthraquinone process, face significant challenges in terms of energy consumption and environmental impact. As a sustainable alternative, photocatalytic H₂O₂ production, driven by solar energy, has emerged as a promising approach. This review discusses the key advancements in photocatalytic H₂O₂ synthesis, focusing on overcoming challenges such as charge recombination, selectivity for the two-electron oxygen reduction reaction (2e⁻ ORR), and catalyst stability. Recent innovations in photocatalyst design, including high-entropy materials, single-atom catalysts, and covalent organic frameworks (COFs), have significantly enhanced efficiency and stability. Furthermore, novel strategies for optimizing charge separation, light harvesting, and mass transfer are explored. The integration of artificial intelligence and bioinspired systems holds potential for accelerating progress in this field. This review provides a comprehensive overview of current challenges and cutting-edge solutions, offering valuable insights for the development of scalable, decentralized H₂O₂ production systems that contribute to a more sustainable future.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100545"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visible-light responsive gold nanoparticle and nano-sized Bi2O3–x sheet heterozygote structure for efficient photocatalytic conversion of N2 to NH3","authors":"Jijoe Samuel Prabagar ,&nbsp;Kumbam Lingeshwar Reddy ,&nbsp;Dong-Kwon Lim","doi":"10.1016/j.cjsc.2025.100564","DOIUrl":"10.1016/j.cjsc.2025.100564","url":null,"abstract":"<div><div>The advancement in catalysis techniques for sustainable environmental applications, particularly an alternative to the current Haber-Bosch process for NH₃, has recently gained widespread attention. Although photocatalytic conversion of N₂ to NH₃ using solar energy is an eco-friendly method, it has the limitation of low quantum yield. Recently, 2D Bi-based photocatalysts which exhibit higher visible light absorption than TiO₂ and higher stability than MXene have been an active research topic, and their performance can be enhanced through improved visible light absorption properties by incorporating plasmonic gold nanoparticles while nitrogen adsorption could be enhanced through oxygen vacancy (OV) processes. In the present study, we explore the application of 2D nano-sized Bi₂O₃_–_<em>x</em> and gold nanoparticles for visible light photo generation of NH₃. HRTEM and XPS reveal that the formation of AuNP and nano-sized Bi₂O₃_–_<em>x</em> in AuNP/Bi₂O₃_–_<em>x</em> heterozygote structure promotes the charge carrier mobility and charge transport at the interface, resulting in a 2.6-fold increase in the photocatalytic activity compared to micro-sized Bi₂O₃_–_<em>x</em> with AuNP. The improved photocatalytic performance can be ascribed to significant enhancement of visible light absorption by plasmonic nanoparticles, fast charge transport and mobility (due to sheet morphology) and the N₂ activation by OV in AuNP/Bi₂O₃_–_<em>x</em> heterozygote. Through a systematic experimental investigation involving catalysts, concentration, pH, and scavengers, the highest photocatalytic performance was achieved with the heterozygote structures of AuNP/n-Bi₂O₃_–_<em>x</em> under optimized conditions, yielding 432.5 μmol g_cat⁻¹ h⁻¹ of NH₃.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100564"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface gallium hydride on Ga2O3 polymorphs: A comparative solid-state NMR study","authors":"Honglin Gao ,&nbsp;Chunlin Yuan ,&nbsp;Hongyu Chen ,&nbsp;Aiyi Dong ,&nbsp;Pan Gao ,&nbsp;Guangjin Hou","doi":"10.1016/j.cjsc.2025.100561","DOIUrl":"10.1016/j.cjsc.2025.100561","url":null,"abstract":"<div><div>As a highly reactive reaction intermediate, surface gallium hydride (Ga–H) has garnered significant attention due to its critical role in various catalytic reactions. However, the detailed experimental characterization of this unique species remains challenging. Recently, we have demonstrated that solid-state NMR can be an effective tool for studying surface Ga–H. In this work, we report a comparative solid-state NMR study on H₂ activation over different Ga₂O₃ polymorphs, specifically <em>α</em>-, <em>β</em>- and <em>γ</em>-Ga₂O₃. ¹H solid-state NMR enabled the identification of Ga–H species formed on all the three samples following high-temperature H₂ treatment. The characteristic ¹H NMR signals of Ga–H species are resolved using <em>J-</em>coupling-based double-resonance NMR methods, revealing highly similar lineshapes of Ga–H for all the Ga₂O₃ samples. This suggests potentially similar surface Ga–H configurations among different Ga₂O₃ polymorphs. In addition, the local hydrogen environments on the oxide surfaces are further explored using two-dimensional (2D) ¹H–¹H homonuclear correlation spectra, revealing multiple spatially proximate Ga–H and Ga–H/–OH pairs on different Ga₂O₃ polymorphs. These findings provide insights into the potential mechanism of H₂ dissociation. Overall, this work offers new perspectives on the local structure of surface Ga–H on Ga₂O₃, and the analytical approach presented here can be further extended to the study of other Ga-based catalysts and other metal hydride species.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100561"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shortening the formation time of oxide thin film photoelectrodes from hours to seconds","authors":"Zili Ma,&nbsp;Zeyu Li,&nbsp;Jun Lv","doi":"10.1016/j.cjsc.2024.100450","DOIUrl":"10.1016/j.cjsc.2024.100450","url":null,"abstract":"","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 4","pages":"Article 100450"},"PeriodicalIF":5.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}