Nature Chemical Engineering最新文献_第9页

Upping the bounds for charged membranes 提高带电膜的性能

Nature Chemical Engineering Pub Date : 2024-04-10 DOI: 10.1038/s44286-024-00057-x

Thomas Dursch

引用次数: 0

Mitigating uncertainties enables more accurate greenhouse gas accounting for petrochemicals 减少不确定性，实现更准确的石化温室气体核算

Nature Chemical Engineering Pub Date : 2024-04-04 DOI: 10.1038/s44286-024-00048-y

Yuan Yao

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Electrochemical concentration pumping in liquid–liquid extractions 液-液萃取中的电化学浓缩泵

Nature Chemical Engineering Pub Date : 2024-04-03 DOI: 10.1038/s44286-024-00053-1

Boelo Schuur

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Accelerating the climate transition through scientist-led CO2 management pilot projects 通过科学家主导的二氧化碳管理试点项目加速气候转型

Nature Chemical Engineering Pub Date : 2024-04-03 DOI: 10.1038/s44286-024-00056-y

Viola Becattini, Stefan Wiemer, Marco Mazzotti

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Directed transfer of liquid metal droplets between electrodes 液态金属液滴在电极间的定向转移

Nature Chemical Engineering Pub Date : 2024-04-02 DOI: 10.1038/s44286-024-00046-0

Gerd Mutschke, Tom Weier

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Better cooling for faster healing 冷却效果更好，愈合更快

Nature Chemical Engineering Pub Date : 2024-04-02 DOI: 10.1038/s44286-024-00054-0

Ronghui Wu, Po-Chun Hsu

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Daytime radiative cooling dressings for accelerating wound healing under sunlight 日间辐射冷却敷料，在阳光下加速伤口愈合

Nature Chemical Engineering Pub Date : 2024-03-26 DOI: 10.1038/s44286-024-00050-4

Qian Zhang, Chao Qi, Xueyang Wang, Bin Zhu, Wei Li, Xingfang Xiao, Hanyu Fu, Song Hu, Shining Zhu, Weilin Xu, Jia Zhu

{"title":"Daytime radiative cooling dressings for accelerating wound healing under sunlight","authors":"Qian Zhang, Chao Qi, Xueyang Wang, Bin Zhu, Wei Li, Xingfang Xiao, Hanyu Fu, Song Hu, Shining Zhu, Weilin Xu, Jia Zhu","doi":"10.1038/s44286-024-00050-4","DOIUrl":"10.1038/s44286-024-00050-4","url":null,"abstract":"The process of wound healing is sensitive to various factors of the local environment, including temperature, humidity and sterility. However, due to lack of efficient thermal regulation in existing wound dressings, the perturbed local environment and oxidative stress caused by an increased wound temperature under outdoor sunlight inevitably impacts wound healing. Here we demonstrate a daytime radiative cooling dressing based on a polyamide 6/silk fibroin bilayer that reduces the thermal load for skin wounds under sunlight illumination. The mid-infrared transparent polyamide 6 and the biocompatible silk fibroin together endow a high mid-infrared emissivity (~0.94) and sunlight reflectivity (~0.96), thus achieving a temperature of ~7 °C below ambient under direct sunlight. When used for repairing mouse skin full-thickness injuries under sunlight, we observed an accelerated wound healing rate compared with that of commercial dressings. This work therefore offers a promising strategy for passive temperature regulation to accelerate wound healing under sunlight. It is essential to develop new dressing designs for wounds that can maintain ideal thermal comfort even under high temperatures in outdoor conditions. Now, a daytime radiative cooling dressing based on a polyamide 6/silk fibroin bilayer is demonstrated to accelerate wound healing by reducing the thermal load for skin wounds under sunlight illumination.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140379509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reducing uncertainties in greenhouse gas emissions from chemical production 减少化工生产温室气体排放的不确定性

Nature Chemical Engineering Pub Date : 2024-03-26 DOI: 10.1038/s44286-024-00047-z

Luke Cullen, Fanran Meng, Rick Lupton, Jonathan M. Cullen

{"title":"Reducing uncertainties in greenhouse gas emissions from chemical production","authors":"Luke Cullen, Fanran Meng, Rick Lupton, Jonathan M. Cullen","doi":"10.1038/s44286-024-00047-z","DOIUrl":"10.1038/s44286-024-00047-z","url":null,"abstract":"Uncertainties in greenhouse gas emissions estimates for petrochemical production have lacked quantification globally, impacting emissions reporting and decarbonization policymaking. Here we analyze cradle-to-gate emissions of 81 chemicals at 37,000 facilities worldwide, assessing 6 uncertainty sources. The results estimate a 34% uncertainty in total global emissions of 1.9 ± 0.6 Gt of CO2-equivalent emissions for 2020, and 15–40% uncertainties across most petrochemicals analyzed. The largest uncertainties stem from the inability to assign specific production processes to facilities owing to data limitations. Uncertain data on feedstock production and off-site energy generation contribute substantially, while on-site fuel combustion and chemical reactions have smaller roles. Allocation method choices for co-products are generally insignificant. Prioritizing facility-level process specification in data collection for just 20% of facilities could reduce global uncertainty by 80%. This underscores the necessity of quantifying uncertainty in petrochemical greenhouse gas emissions globally and outlines priorities for improved reporting. The dataset generated offers independent emissions factor estimates based on facility-specific information for 81 chemicals, supporting future analyses. Robust decarbonization strategies for the petrochemical industry are hampered by many sources of uncertainty in greenhouse gas emissions estimates. Here the authors quantify and prioritize uncertainty sources, finding that the most significant factor is the lack of detailed data about specific production processes used in chemical facilities.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00047-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140380995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Redox-mediated electrochemical liquid–liquid extraction for selective metal recovery 氧化还原介导的电化学液液萃取技术用于选择性金属回收

Nature Chemical Engineering Pub Date : 2024-03-25 DOI: 10.1038/s44286-024-00049-x

Stephen R. Cotty, Aderiyike Faniyan, Johannes Elbert, Xiao Su

{"title":"Redox-mediated electrochemical liquid–liquid extraction for selective metal recovery","authors":"Stephen R. Cotty, Aderiyike Faniyan, Johannes Elbert, Xiao Su","doi":"10.1038/s44286-024-00049-x","DOIUrl":"10.1038/s44286-024-00049-x","url":null,"abstract":"Electrochemical separations are powerful platforms for the sustainable recovery of critical elements, environmental remediation and downstream processing. However, the recent development of electroseparations has primarily focused on heterogeneous adsorbents, which face the challenge of intermittent electroswing operation. Here we present a redox-mediated electrochemical liquid–liquid extraction separation platform that translates selective single-site binding to a fully continuous separation scheme. A redox-active extractant is molecularly designed with controllable hydrophobicity to maximize organic phase retention. The redox flow design enables fully electrified continuous operation with no external chemical input, achieving the selective recovery of precious metals from multicomponent streams. We demonstrate an atomic efficiency of over 90% and over 100:1 selectivity for practical critical metal leach streams, and 16-fold up-concentration for gold and platinum group metals from varied feedstocks including electronic waste, catalytic converter waste and mining streams. Our work is envisioned as a pathway towards a broader class of industrially applicable liquid–liquid extraction-based electrochemical separations. The recovery of gold and platinum group metals from sources like electronic waste, catalytic converter waste and mining streams remains challenging. Now, an electrochemically mediated liquid–liquid extraction process leverages the selectivity of redox-active extractants for the selective recovery of precious and critical metals including gold and platinum group metals from diverse feedstocks.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00049-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140382919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Liquid-metal transfer from an anode to a cathode without short circuiting 从阳极到阴极的液态金属转移，无需短路

Nature Chemical Engineering Pub Date : 2024-03-20 DOI: 10.1038/s44286-024-00045-1

Yahua He, Jing You, Michael D. Dickey, Xiaolin Wang

{"title":"Liquid-metal transfer from an anode to a cathode without short circuiting","authors":"Yahua He, Jing You, Michael D. Dickey, Xiaolin Wang","doi":"10.1038/s44286-024-00045-1","DOIUrl":"10.1038/s44286-024-00045-1","url":null,"abstract":"Droplets of liquid metals attached to an anode in an electrochemical cell move toward the cathode since electrochemical oxidation lowers the interfacial tension of the metal. When the droplet reaches the cathode, it wraps around the cathode but does not touch it despite the electrostatic attraction between the positively charged liquid metal and the negatively charged cathode. The combination of electrochemical oxidation of the liquid-metal anode and hydrogen production on the cathode prevents contact, thus avoiding a short circuit between the two electrodes. Consequently, the liquid metal continues to flow toward the cathode and surrounds it until finally the metal completely detaches from the anode and transfers to the cathode. Such manipulation depends on the distance between the cathode and the liquid metal; only the closest liquid-metal droplet will detach and transfer. During this process, the liquid can adopt surprising shapes that resemble tentacles. We demonstrate and characterize the unique ability to detach and transfer liquid metal using a low applied voltage. Positively charged anodes should short circuit when they are brought into contact with a cathode. The authors demonstrate that a liquid-metal anode can naturally flow toward the cathode, completely surround it and ultimately transfer to the cathode without short circuiting in an electrochemical cell.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140225629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0