Chinese Chemical Letters最新文献_第2页

V2CTX MXene-derived ammonium vanadate with robust carbon skeleton for superior rate aqueous zinc-ion batteries V2CTX mxene衍生钒酸铵具有坚固的碳骨架，用于高倍率水性锌离子电池

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-17 DOI: 10.1016/j.cclet.2025.111231

Xiaojun Wang , Yizhou Zhang , Linwei Guo , Jianwei Li , Peng Wang , Lei Yang , Zhiming Liu

{"title":"V2CTX MXene-derived ammonium vanadate with robust carbon skeleton for superior rate aqueous zinc-ion batteries","authors":"Xiaojun Wang , Yizhou Zhang , Linwei Guo , Jianwei Li , Peng Wang , Lei Yang , Zhiming Liu","doi":"10.1016/j.cclet.2025.111231","DOIUrl":"10.1016/j.cclet.2025.111231","url":null,"abstract":"<div><div>Layered ammonium vanadate has become a promising cathode material for aqueous zinc ion batteries (ZIBs) due to its small mass and large ionic radius of ammonium ions as well as the consequent large layer spacing and high specific capacity. However, the irreversible de-ammoniation caused by N·H···O bonds damaged would impair cycle life of ZIBs and the strong electrostatic interaction between Zn2+ and V-O frame could slower the mobility of Zn2+. Furthermore, the thermal instability of ammonium vanadate also limits the use of common carbon coating modification method to solve the problem. Herein, V2CTX MXene was innovatively selected as a bifunctional source to in-situ derivatized (NH4)2V8O20·xH2O with amorphous carbon-coated (NHVO@C) via one-step hydrothermal method in relatively moderate temperature. The amorphous carbon shell derived from the V2CTX MXene as a conductive framework to effectively improve the diffusion kinetics of Zn2+ and the robust carbon skeleton could alleviate the ammonium dissolution during long-term cycling. As a result, zinc ion batteries using NHVO@C as cathode exhibit superior electrochemical performance. Moreover, the assembled foldable or high loading (10.2 mg/cm2) soft-packed ZIBs further demonstrates its practical application. This study provided new insights into the development of the carbon cladding process for thermally unstable materials in moderate temperatures.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111231"},"PeriodicalIF":9.4,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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AL5E: A breakthrough in broad-spectrum coronavirus inactivation through structure-guided design AL5E：通过结构引导设计实现冠状病毒广谱失活的突破

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-16 DOI: 10.1016/j.cclet.2025.111221

Heng Gao, Jiwei Zhang, Peng Zhan, Xinyong Liu

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Asymmetric Büchner reaction and arene cyclopropanation via copper-catalyzed controllable cyclization of diynes 铜催化双炔可控环化的不对称b<s:1> chner反应及芳烃环丙烷化

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-16 DOI: 10.1016/j.cclet.2025.111226

Yi-Kao Xu , Guo-Ping Luo , Liang-Bin Hu , Wei-Min He

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Corrigendum to “Oxygen vacancy regulating transition mode of MIL-125 to facilitate singlet oxygen generation for photocatalytic degradation of antibiotics” [Chinese Chemical Letters 35 (2024) 109761] “氧空位调节MIL-125的过渡模式以促进光催化降解抗生素的单线态氧生成”的更正[中国化学快报35 (2024)109761]

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-15 DOI: 10.1016/j.cclet.2025.110868

Shenghui Tu , Anru Liu , Hongxiang Zhang , Lu Sun , Minghui Luo , Shan Huang , Ting Huang , Honggen Peng

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Cu0/Cuδ+ site construction and its catalytic role in acetylene hydrochlorination Cu0/Cuδ+位点的构建及其在乙炔加氢氯化反应中的催化作用

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-15 DOI: 10.1016/j.cclet.2025.111208

Junchen Peng , Zhongyuan Guo , Dandan Dong, Yusheng Lu, Bao Wang, Fangjie Lu, Chaofeng Huang, Bin Dai

{"title":"Cu0/Cuδ+ site construction and its catalytic role in acetylene hydrochlorination","authors":"Junchen Peng , Zhongyuan Guo , Dandan Dong, Yusheng Lu, Bao Wang, Fangjie Lu, Chaofeng Huang, Bin Dai","doi":"10.1016/j.cclet.2025.111208","DOIUrl":"10.1016/j.cclet.2025.111208","url":null,"abstract":"<div><div>In view of the dearth of active components and the unsatisfactory dispersion of Cu-based catalysts, it is imperative to undertake a detailed investigation of catalysts with enhanced catalytic performance. In order to achieve a balance between the catalytic activity and stability in the reaction process, a series of P-atom doped Cu0/Cuδ+ binary Cu-based catalysts were prepared by means of heteroatom introduction and heat treatment. The introduction of P enhanced the stability of Cu during heat treatment, thereby inhibiting the excessive agglomeration of Cu. The structure of the Cu0/Cuδ+ binary catalyst was modified through heat treatment and HCl activation, and the relationship between its structure and catalytic activity was subsequently investigated. The activation process of HCl facilitated the conversion of the Cu0 state to the Cu-Cl state and augmented the valence state of Cu. The valence modulation of the Cu site by HCl during the reaction prevented the over-reduction of the Cu site by acetylene and enhanced the stability of the catalyst. The 3Cu/5CuP/AC-800 catalyst was operated for 50 h without significant deactivation under the reaction conditions of T = 180 °C, V(HCl)/V(C2H2) = 1.15 and GHSV(C2H2) = 180 h-1. This design strategy provides a novel reference point for further studies of CuCl2 based catalysts for acetylene hydrochlorination.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111208"},"PeriodicalIF":9.4,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stabilizing Cu2+ in perovskite via A-site modulation for efficient CO2 electrocatalysis to CH4 通过a位调制稳定钙钛矿中的Cu2+，实现CO2对CH4的高效电催化

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-10 DOI: 10.1016/j.cclet.2025.111193

Yuhan Zheng, Yunzhen Jia, Xuelei Lang, Dazhong Zhong, Jinping Li, Qiang Zhao

{"title":"Stabilizing Cu2+ in perovskite via A-site modulation for efficient CO2 electrocatalysis to CH4","authors":"Yuhan Zheng, Yunzhen Jia, Xuelei Lang, Dazhong Zhong, Jinping Li, Qiang Zhao","doi":"10.1016/j.cclet.2025.111193","DOIUrl":"10.1016/j.cclet.2025.111193","url":null,"abstract":"<div><div>Cu2+ in copper-based catalysts can facilitate the hydrogenation of the CH4 production pathway via the electrochemical carbon dioxide reduction reaction (ECRR). However, Cu2+ species in copper oxides are unstable and have been revealed to reduce to Cu0 under the applied cathodic potential. In this work, we reported an A-site modulation strategy to stabilize Cu2+ in perovskite for efficient ECRR to CH4. After the introduction of Ca2+ in La2CuO4, the obtained LaCa0.4CuO3-δ is stable during ECRR. We achieved a 59.6 % ± 3.8 % CH4 faradaic efficiency at -1.30 V versus reversible hydrogen electrode in H-cell and a partial current density of 155.0 mA/cm2 in membrane electrode assembly. DFT calculations and in situ Raman spectroscopy show that Cu2+ facilitates the hydrogenation of *CH2O to *CH3O and the further production of CH4. This work introduces an efficient strategy to stabilize Cu2+ and provides an understanding of Cu2+ in promoting ECRR to CH4.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111193"},"PeriodicalIF":9.4,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Photoinduced gold-catalyzed cross-couplings 光诱导金催化的交叉偶联

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-08 DOI: 10.1016/j.cclet.2025.111070

Rong-Nan Yi , Zi-Jian Zhao , Wei-Min He

引用次数: 0

Radar-stealth and thermal-insulating MOF-derived cellulose-carbon aerogels for broadband electromagnetic wave absorption 雷达隐身和隔热mof衍生的纤维素碳气凝胶用于宽带电磁波吸收

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-08 DOI: 10.1016/j.cclet.2025.111065

Jingyuan Luo , Liping Wu , Jinxi Yan , Xintong Lv , Yuqi Luo , Wei Jiang , Zhiqiang Xiong , Anqi Ni , Chongbo Liu , Renchao Che

{"title":"Radar-stealth and thermal-insulating MOF-derived cellulose-carbon aerogels for broadband electromagnetic wave absorption","authors":"Jingyuan Luo , Liping Wu , Jinxi Yan , Xintong Lv , Yuqi Luo , Wei Jiang , Zhiqiang Xiong , Anqi Ni , Chongbo Liu , Renchao Che","doi":"10.1016/j.cclet.2025.111065","DOIUrl":"10.1016/j.cclet.2025.111065","url":null,"abstract":"<div><div>Considering the challenges posed by severe electromagnetic wave pollution and escalating international tensions, there is a critical need to develop advanced electromagnetic wave absorbing (EMWA) materials that integrate radar stealth and thermal insulation capabilities. In this study, we have synthesized three-dimensional (3D) porous composites comprising V2O3 nanoparticles embedded in Juncus effusus cellulose-derived carbon aerogels (VCA) using a self-templating method followed by high-temperature pyrolysis. The V2O3 nanoparticles possess a 3D V-V framework and a relatively narrow bandgap, facilitating the Mott transition for enhanced conductivity. Furthermore, their uniform dispersion on hollow carbon tubes of Juncus effusus promotes efficient electron transfer and creates numerous heterogeneous interfaces. Consequently, VCA-2 demonstrates outstanding EMWA performance, achieving a minimum reflection loss of −63.92 dB at a matching thickness of 2.0 mm and a maximum effective absorption bandwidth of 8.24 GHz at a thickness of 2.44 mm, covering nearly half of the tested frequency range. Additionally, the radar cross-section reduction reaches a peak value of 29.40 dB m2, underscoring the excellent radar stealth capabilities of the material. In summary, VCA exhibits exceptional EMWA, radar stealth, and thermal insulation properties, highlighting its potential for multifunctional applications in EMWA material development.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 7","pages":"Article 111065"},"PeriodicalIF":9.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Three-channel imaging reveals the comprehensive protein modifications and their impact on skin appearance induced by multiple stimuli 三通道成像揭示了多种刺激诱导的全面蛋白质修饰及其对皮肤外观的影响

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-04-07 DOI: 10.1016/j.cclet.2025.111182

Wenjuan Liu , Shanshan Zhang , Yu Wang , Bin Fang , Weirui Wang , Shujing Song , Tomohiro Hakozaki

{"title":"Three-channel imaging reveals the comprehensive protein modifications and their impact on skin appearance induced by multiple stimuli","authors":"Wenjuan Liu , Shanshan Zhang , Yu Wang , Bin Fang , Weirui Wang , Shujing Song , Tomohiro Hakozaki","doi":"10.1016/j.cclet.2025.111182","DOIUrl":"10.1016/j.cclet.2025.111182","url":null,"abstract":"<div><div>Protein damage repair and prevention are important objectives in skin care industry. Skin protein damage or modifications such as glycation, carbonylation or oxidation, have a significant impact on its function, therefore directly influencing various skin functions or properties including skin appearance. However, there is a lack of comprehensive methods to visualize and assess the protein damage. In this article, we present a three-channel imaging approach to simultaneously visualize and quantitatively evaluate protein oxidation, protein glycation and carbonylation in a full-thickness skin model. We successfully visualized and quantified the impact of the multiple stimuli (ultraviolet radiation A (UVA) and/or methylglyoxal) as well as treatment effect of positive control (vitamins C and E) with this method. Our findings indicate that multiple stimuli exhibit synergistic effects on protein damage. Furthermore, we evaluated a unique combination of skin care ingredients which demonstrated an excellent efficacy in resisting protein damage. Further research revealed that three ingredients of the combination upregulate autophagy in cells, which may contribute to remove damaged proteins and maintain protein quality homeostasis. This method provides a holistic assessment of protein damages and can be employed to evaluate the impact of various stimuli or to assess the efficacy of skin care ingredients in mitigating such damage.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 111182"},"PeriodicalIF":9.4,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual activation pathways based on OH-functionalized alk-Ti3C2 MXene/RuOx boosting the hydrogen generation oh功能化alk-Ti3C2 MXene/RuOx双活化途径促进制氢

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2025-03-31 DOI: 10.1016/j.cclet.2025.111162

Chongbei Wu , Benzhi Wang , Xuan Li , Jiaxuan Gu , Yihan Wu , Zhe Zhao , Pengfei Jia , Jizhou Jiang

{"title":"Dual activation pathways based on OH-functionalized alk-Ti3C2 MXene/RuOx boosting the hydrogen generation","authors":"Chongbei Wu , Benzhi Wang , Xuan Li , Jiaxuan Gu , Yihan Wu , Zhe Zhao , Pengfei Jia , Jizhou Jiang","doi":"10.1016/j.cclet.2025.111162","DOIUrl":"10.1016/j.cclet.2025.111162","url":null,"abstract":"<div><div>A meticulous design of the local environment at the interface between active species and the support, aimed at optimizing the adsorption of H2O molecules and BH4− anion, offers an ideal strategy for enhancing hydrogen generation via NaBH4 hydrolysis through dual activation pathways. Theoretical predictions based on d-band center analysis and electron transfer calculations suggest that introducing -OH functional groups induce charge redistribution, enhancing charge concentration on alk-Ti3C2 and facilitating the adsorption and activation of dual active species, H2O molecules and BH4− anion. Inspired by these predictions, the optimized alk-Ti3C2/RuOx catalyst demonstrates the highest catalytic activity, achieving a hydrogen generation rate (HGR) of 9468 mL min−1 gcat.−1. Both experimental data and theoretical analyses confirm that the -OH functional groups promote charge enrichment on alk-Ti3C2, optimizing the adsorption of H2O molecules and BH4− anion, and reducing the dissociation energy barrier of the *OH<img>H-TS intermediate. This dual activation pathways mechanism lowers the activation energy for NaBH4 hydrolysis, significantly enhancing the HGR performance. These findings, guided by theoretical insights, establish alk-Ti3C2/RuOx as an efficient catalyst for NaBH4 hydrolysis and provide a strong foundation for future hydrogen generation catalyst designs.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 8","pages":"Article 111162"},"PeriodicalIF":9.4,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144229590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0