Chinese Chemical Letters最新文献_第6页

Photocatalyzed oxidation of water on oxygen pretreated rutile TiO2(110)

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-11-03 DOI: 10.1016/j.cclet.2024.110602

Zhiqiang Wang , Yajie Gao , Tianjun Wang , Wei Chen , Zefeng Ren , Xueming Yang , Chuanyao Zhou

{"title":"Photocatalyzed oxidation of water on oxygen pretreated rutile TiO2(110)","authors":"Zhiqiang Wang , Yajie Gao , Tianjun Wang , Wei Chen , Zefeng Ren , Xueming Yang , Chuanyao Zhou","doi":"10.1016/j.cclet.2024.110602","DOIUrl":"10.1016/j.cclet.2024.110602","url":null,"abstract":"<div><div>The oxygen evolution reaction (OER) is the bottleneck in the overall photocatalytic splitting of water. The active sites (terminal titanium or bridging oxygen) and active species (molecular or dissociative water) of the initial step of the photocatalyzed OER on the prototypical photocatalyst TiO<sub>2</sub>, remain debatable. Herein, the photocatalytic chemistry of monolayer water on oxygen-pretreated TiO<sub>2</sub>(110) (<em>o</em>-TiO<sub>2</sub>(110)) and reduced TiO<sub>2</sub>(110) (<em>r</em>-TiO<sub>2</sub>(110)) surfaces initiated by 400 nm light illumination was investigated by time-dependent two-photon photoemission spectroscopy (TD-2PPE). The photoinduced reduction of the H<sub>2</sub>O/<em>o</em>-TiO<sub>2</sub>(110) interface rather than the H<sub>2</sub>O/<em>r</em>-TiO<sub>2</sub>(110) interface was detected by TD-2PPE. The difference in 2PPE originated from the presence of the terminal hydroxyl anions (OH<sub>t</sub>¯) on H<sub>2</sub>O/<em>o</em>-TiO<sub>2</sub>(110), as identified by X-ray photoelectron spectroscopy and temperature-programmed desorption. Therefore, the evolution of the electronic structure of H<sub>2</sub>O/<em>o</em>-TiO<sub>2</sub>(110) was attributed to the photocatalyzed oxidation of the terminal hydroxyl anions, which most likely formed gaseous <sup>•</sup>OH radicals, reducing the interface. This work suggested that the oxidation of hydroxyl anions on top of the terminal titanium ions on TiO<sub>2</sub>, which were excluded previously in solution, need to be considered in the mechanistic studies of the photocatalyzed OER.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110602"},"PeriodicalIF":9.4,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098579","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

Recent advances in supramolecular luminescent materials based on macrocyclic arenes

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-11-02 DOI: 10.1016/j.cclet.2024.110600

Yu-Jie Long , Xiao-Ni Han , Ying Han , Chuan-Feng Chen

{"title":"Recent advances in supramolecular luminescent materials based on macrocyclic arenes","authors":"Yu-Jie Long , Xiao-Ni Han , Ying Han , Chuan-Feng Chen","doi":"10.1016/j.cclet.2024.110600","DOIUrl":"10.1016/j.cclet.2024.110600","url":null,"abstract":"<div><div>Supramolecular luminescent materials (SLMs) exhibit exceptional luminescence properties and the ability to be intelligently regulated through diverse assembly approaches, making them highly attractive in the field of luminescent materials. In recent years, the novel macrocyclic arenes characterized by unique electron-rich structures, ease of derivatization, tunable conformations and even inherent luminescence properties afford much opportunities to create such dynamic smart luminescent materials. The incorporation of macrocyclic arenes into SLMs leads to simple preparation process, diverse photophysical phenomena and sophisticated regulatory mechanisms, which is also currently one of the most frontier and hot topics in macrocyclic and supramolecular chemistry and even luminescent materials. In this review, the research advances in construction and applications of SLMs based on macrocyclic arenes in the last several years will be presented from the different assembly strategies, including host-guest complexes, supramolecular polymers, nanoparticles, and other assemblies. Moreover, some insights into future directions for this research area will also be offered.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 6","pages":"Article 110600"},"PeriodicalIF":9.4,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696849","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

Synergistic regulation of polysulfides shuttle effect and lithium dendrites from cobalt-molybdenum bimetallic carbides (Co-Mo-C) heterostructure for robust Li-S batteries 钴钼双金属碳化物（Co-Mo-C）异质结构对多硫化物穿梭效应和锂枝晶的协同调控，用于制造坚固的锂-S 电池

IF 9.1 1区化学

Chinese Chemical Letters Pub Date : 2024-11-01 DOI: 10.1016/j.cclet.2024.110604

Xuanyang Jin, Xincheng Guo, Siyang Dong, Shilan Li, Shengdong Jin, Peng Xia, Shengjun Lu, Yufei Zhang, Haosen Fan

{"title":"Synergistic regulation of polysulfides shuttle effect and lithium dendrites from cobalt-molybdenum bimetallic carbides (Co-Mo-C) heterostructure for robust Li-S batteries","authors":"Xuanyang Jin, Xincheng Guo, Siyang Dong, Shilan Li, Shengdong Jin, Peng Xia, Shengjun Lu, Yufei Zhang, Haosen Fan","doi":"10.1016/j.cclet.2024.110604","DOIUrl":"https://doi.org/10.1016/j.cclet.2024.110604","url":null,"abstract":"Lithium-sulfur batteries (LSBs) are considered as the most promising energy storage technologies owing to their large theoretical energy density (2500 Wh/kg) and specific capacity (1675 mAh/g). However, the heavy shuttle effect of polysulfides and the growth of lithium dendrites greatly hinder their further development and commercial application. In this paper, cobalt-molybdenum bimetallic carbides heterostructure (Co<sub>6</sub>Mo<sub>6</sub>C<sub>2</sub>@Co@NC) was successfully prepared through chemical etching procedure of ZIF-67 precursor with sodium molybdate and the subsequent high temperature annealing process. The obtained dodecahedral Co<sub>6</sub>Mo<sub>6</sub>C<sub>2</sub>@Co@NC with hollow and porous structure provides large specific surface area and plentiful active sites, which speeds up the chemisorption and catalytic conversion of polysulfides, thus mitigating the shuttle effect of polysulfides and the generation of lithium dendrites. When applied as the LSBs separator modifier layer, the cell with modified separator present excellent rate capability and durable cycling stability. In particular, the cell with Co<sub>6</sub>Mo<sub>6</sub>C<sub>2</sub>@Co@NC/PP separator can maintain the high capacity of 738 mAh/g at the current density of 2 C and the specific capacity of 782.6 mAh/g after 300 cycles at 0.5 C, with the coulombic efficiency (CE) near to 100%. Moreover, the Co<sub>6</sub>Mo<sub>6</sub>C<sub>2</sub>@Co@NC/PP battery exhibits the impressive capacity of 431 mAh/g in high sulfur loading (4.096 mg/cm<sup>2</sup>) at 0.5 C after 200 cycles. This work paves the way for the development of bimetallic carbides heterostructure multifunctional catalysts for durable Li-S battery applications and reveals the synergistic regulation of polysulfides and lithium dendrites through the optimization of the structure and composition.","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"79 1","pages":""},"PeriodicalIF":9.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142562363","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

High-efficiency exudates drainage of anti-adhesion dressings for chronic wound

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-11-01 DOI: 10.1016/j.cclet.2024.110601

Bingyang Lu , Dehui Wang , Junchang Guo , Yang Shen , Qian Feng , Jinlong Yang , Xiao Han , Huali Yu , Luohuizi Li , Jiaxin Liu , Jing Luo , Huan Liu , Zhongwei Zhang , Xu Deng

{"title":"High-efficiency exudates drainage of anti-adhesion dressings for chronic wound","authors":"Bingyang Lu , Dehui Wang , Junchang Guo , Yang Shen , Qian Feng , Jinlong Yang , Xiao Han , Huali Yu , Luohuizi Li , Jiaxin Liu , Jing Luo , Huan Liu , Zhongwei Zhang , Xu Deng","doi":"10.1016/j.cclet.2024.110601","DOIUrl":"10.1016/j.cclet.2024.110601","url":null,"abstract":"<div><div>Secondary trauma, resulting in undesirable injury and bleeding during wound dressing treatment, which will cause the treatment of chronic wounds ineffective. The medical cotton gauzes often bring strong adhesion due to the exudates absorbed and clots formed. Conversely, the easily detachable wound dressings neglect the wound seepage management, rendering them ineffective in facing the complexities of chronic wounds. To address this challenge, we propose a novel draining anti-adhesion dressings (DAD) by constructing the hydrophilic microchannels array on the superhydrophobic dressing. The superhydrophobic areas facilitate stable wound fluid repellence leading to achieve the anti-adhesion (18.7 % detachment energy of cotton) and the microchannel array ensures the transportation of excess exudates (>92 %) by the capillary force. Notably, our dressing demonstrates a significant healing-promoting in a chronic wound model in rats. The development of such dressings holds promise for advancing wound care practices and addressing the unique challenges posed by chronic wounds, offering a valuable solution for improved clinical outcomes.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 4","pages":"Article 110601"},"PeriodicalIF":9.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098580","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

Trace detection of benzene, toluene and xylene (BTX) by chemiresistive metal oxide-based gas sensors: Recent advances in heterojunction materials design 利用基于化学电阻金属氧化物的气体传感器痕量检测苯、甲苯和二甲苯 (BTX)：异质结材料设计的最新进展

IF 9.1 1区化学

Chinese Chemical Letters Pub Date : 2024-11-01 DOI: 10.1016/j.cclet.2024.110606

Yidan Chen, Junzhou Xu, Yanjun Pan, Qi Cao, Kaiping Yuan

{"title":"Trace detection of benzene, toluene and xylene (BTX) by chemiresistive metal oxide-based gas sensors: Recent advances in heterojunction materials design","authors":"Yidan Chen, Junzhou Xu, Yanjun Pan, Qi Cao, Kaiping Yuan","doi":"10.1016/j.cclet.2024.110606","DOIUrl":"https://doi.org/10.1016/j.cclet.2024.110606","url":null,"abstract":"As the chemical industry expands, the use of benzene, toluene, and xylene (collectively known as BTX) in industrial production has increased greatly. Meanwhile, the toxic nature and potential health hazards of BTX gases cannot be ignored due to low-concentration leaks underline the critical need for rapid and real-time monitoring of these gases. Chemiresistive metal oxide semiconductor (MOS)-based gas sensors, which are extensively used for gas detection in both industrial settings and everyday life, emerge as one of the optimal solutions for trace BTX detection. These sensors are highly valued for their high sensitivity and low detection limits. Nevertheless, the improvement of selectivity towards specific BTX gases to achieve efficient and precise detection still remains challenging. This review summarizes the chemiresistive MOS-based gas sensors designed for BTX detection, categorizing them based on the components of sensing materials-basically into three groups: single-component, single heterojunction, and multiple heterojunctions gas sensing materials. Further, the review proposes the future application prospects of chemiresistive MOS-based BTX gas sensors, with specific emphasis on their significance in promoting industrial safety and environmental monitoring.","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"87 1","pages":""},"PeriodicalIF":9.1,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142562369","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

Photocatalytic multi-component synthesis of ester-containing quinoxalin-2(1H)-ones using water as the hydrogen donor 以水为氢供体光催化多组分合成含酯喹喔啉-2(1H)-酮

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-11-01 DOI: 10.1016/j.cclet.2024.110582

Qiang Feng , Jindong Hao , Ya Hu , Rong Fu , Wei Wei , Dong Yi

引用次数: 0

IFC - Editorial Board/ Publication info 国际金融公司 - 编辑委员会/出版信息

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-29 DOI: 10.1016/S1001-8417(24)01001-5

引用次数: 0

IFC - Editorial Board/ Publication info 国际金融公司 - 编辑委员会/出版信息

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-26 DOI: 10.1016/S1001-8417(24)00876-3

引用次数: 0

Gelation-pyrolysis strategy for fabrication of advanced carbon/sulfur cathodes for lithium-sulfur batteries

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-24 DOI: 10.1016/j.cclet.2024.110575

Feng Cao , Chunxiang Xian , Tianqi Yang , Yue Zhang , Haifeng Chen , Xinping He , Xukun Qian , Shenghui Shen , Yang Xia , Wenkui Zhang , Xinhui Xia

{"title":"Gelation-pyrolysis strategy for fabrication of advanced carbon/sulfur cathodes for lithium-sulfur batteries","authors":"Feng Cao , Chunxiang Xian , Tianqi Yang , Yue Zhang , Haifeng Chen , Xinping He , Xukun Qian , Shenghui Shen , Yang Xia , Wenkui Zhang , Xinhui Xia","doi":"10.1016/j.cclet.2024.110575","DOIUrl":"10.1016/j.cclet.2024.110575","url":null,"abstract":"<div><div>The development of high-performance carbon-based composite hosts palys decisive roles in the electrochemistry of lithium sulfur batteries. Herein, a novel metal-ion induced gelation self-assembly technology is reported to construct sodium alginate carbon (SAC) based polar hierarchical carbon composites with cross-linked network architecture and <em>in-situ</em> co-grown cross-linked polar nanoparticles. Interestingly, it shows high versatility to an extensive array of materials including metals, alloys, and metallic oxides. As a representative, NiCo alloy nanoparticles are chosen to obtain the SAC/NiCo composite host for sulfur in LSBs, which possess superior physical/chemical adsorption capabilities and catalytic conversion kinetics to polysulfide in virtue of synergistic interaction between the hierarchical pore structures and NiCo catalyst. The designed SAC/NiCo-S cathode shows superior electrochemical performance with excellent rate capacity (2 C: 693.5 mAh/g) and enhanced cycling stability (764.3 mAh/g at 0.1 C after 240 cycles). This work provides a straightforward approach for fabricating multifunctional carbon composites with adjustable component for advanced energy storage system.</div></div>","PeriodicalId":10088,"journal":{"name":"Chinese Chemical Letters","volume":"36 3","pages":"Article 110575"},"PeriodicalIF":9.4,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143318151","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

Homogeneous catalysis and heterogeneous separation: Ionic liquids as recyclable photocatalysts for hydroacylation of olefins 均相催化和异相分离：离子液体作为烯烃加氢酰化的可回收光催化剂

IF 9.4 1区化学

Chinese Chemical Letters Pub Date : 2024-10-24 DOI: 10.1016/j.cclet.2024.110579

Hao-Cong Li, Ming Zhang, Qiyan Lv, Kai Sun, Xiao-Lan Chen, Lingbo Qu, Bing Yu

引用次数: 0