Nature Chemical Engineering最新文献_第7页

Watching films dry 看电影变干

Nature Chemical Engineering Pub Date : 2025-06-23 DOI: 10.1038/s44286-025-00244-4

Alessio Lavino

引用次数: 0

Tuning nitrate reduction reaction selectivity via selective adsorption in electrified membranes 通过电气化膜的选择性吸附调节硝酸还原反应的选择性

Nature Chemical Engineering Pub Date : 2025-06-20 DOI: 10.1038/s44286-025-00237-3

Yingzheng Fan, Yu Yan, Obinna Nwokonkwo, Daniel J. Rivera, Weiyi Pan, Eric Chen, Ji-Yong Kim, Julia Simon, Max Saffer-Meng, Xiaoxiong Wang, Christopher Muhich, Lea R. Winter

{"title":"Tuning nitrate reduction reaction selectivity via selective adsorption in electrified membranes","authors":"Yingzheng Fan, Yu Yan, Obinna Nwokonkwo, Daniel J. Rivera, Weiyi Pan, Eric Chen, Ji-Yong Kim, Julia Simon, Max Saffer-Meng, Xiaoxiong Wang, Christopher Muhich, Lea R. Winter","doi":"10.1038/s44286-025-00237-3","DOIUrl":"10.1038/s44286-025-00237-3","url":null,"abstract":"Improving electrochemical reactions by manipulating the properties of catalyst active sites often involves tradeoffs in activity, selectivity, stability and material costs. Here we incorporate a nitrite-adsorbing ionophore as a cooperative nitrite-enriching component into an electrified membrane to achieve high nitrate conversion (94.6%) and ammonia selectivity (91.9%) with a treatment time of only a few seconds (6 s). The ionophore enriched nitrite within the local electrocatalyst environment, facilitating conversion of unreacted nitrite to ammonia to inhibit overall nitrite formation (1.1%) without directly modifying the catalytic active sites. Integrating the ionophore as a selective adsorption component into a copper/carbon nanotube-based electrified membrane led to long-term selective ammonia production from low-concentration nitrate in real surface water and wastewater effluent without using precious metals. The concept of employing cooperative adsorption components to manipulate the local electrocatalyst environment and control reaction selectivity without precious metals or complex synthesis, especially when coupled with the stability and efficiency of scalable electrified membranes, could be extended to advance diverse electrocatalytic applications beyond nitrate. This study integrates a nitrite-adsorbing ionophore into a copper/carbon nanotube electrified membrane, enabling ultrafast and highly selective ammonia production from low-concentration nitrate in real water sources. This cooperative adsorption approach tunes the local catalyst environment to achieve high activity, selectivity and stability without using precious metals or complex synthesis methods.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"2 6","pages":"379-390"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123580","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

Ultrathin membranes prepared through interfacial polymer cross-linking for selective and fast ion transport 通过界面聚合物交联制备超薄膜，用于选择性和快速离子传输

Nature Chemical Engineering Pub Date : 2025-06-20 DOI: 10.1038/s44286-025-00238-2

Xiaonan Liu, Mengqi Shi, Chenyi Liao, Na Ta, Yiwen Chen, Congzhi Deng, Hongjun Zhang, Wenjing Lu, Xianfeng Li

{"title":"Ultrathin membranes prepared through interfacial polymer cross-linking for selective and fast ion transport","authors":"Xiaonan Liu, Mengqi Shi, Chenyi Liao, Na Ta, Yiwen Chen, Congzhi Deng, Hongjun Zhang, Wenjing Lu, Xianfeng Li","doi":"10.1038/s44286-025-00238-2","DOIUrl":"10.1038/s44286-025-00238-2","url":null,"abstract":"Ion-selective membranes are widely used in water treatment and batteries. However, it is challenging to obtain membranes that are both selective and permeable. Here, we report an interfacial polymer cross-linking strategy to produce ultrathin but robust polymeric membranes that are simultaneously permeable and selective. Cross-linking the polymer at the interface of two immiscible solvents followed by nonsolvent exchange produces a 3-µm-thick ultrathin membrane that contains a nanoscale separation layer with a quasi-ordered reticular cross-linking structure. Besides conferring strength, the cross-linked structures have angstrom-scale channels and ion-selective sites that can precisely separate ions of similar sizes and charges. We show that these membranes enable increased working current density and power density of various aqueous flow batteries. This strategy resolves a long-standing challenge in polymeric membranes. Ionic or molecular transport in conventional polymeric membranes often suffers from a trade-off between permeability and selectivity. The authors report on an interfacial polymer cross-linking strategy to produce a robust, permeable and selective 3-µm-thick ultrathin polymeric membrane containing quasi-ordered reticular cross-linking structures.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"2 6","pages":"369-378"},"PeriodicalIF":0.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123131","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

Best practices for covalent organic framework membranes in liquid-phase molecular separations 液相分子分离中共价有机框架膜的最佳实践

Nature Chemical Engineering Pub Date : 2025-06-11 DOI: 10.1038/s44286-025-00230-w

Haoyuan Zhang, Dan Zhao

引用次数: 0

Plasma technology for the electrification of chemical reactions 用于化学反应电气化的等离子体技术

Nature Chemical Engineering Pub Date : 2025-06-09 DOI: 10.1038/s44286-025-00229-3

Annemie Bogaerts

引用次数: 0

Probing dynamic oxygen exchange for hydrogen production with operando neutron diffraction 用operando中子衍射探测动态氧交换制氢。

Nature Chemical Engineering Pub Date : 2025-06-04 DOI: 10.1038/s44286-025-00231-9

Daniel M. Telford, Alex Martínez Martín, Matthew D. Guy, Paul F. Henry, Martin O. Jones, Wenting Hu, Ian S. Metcalfe, John S. O. Evans

{"title":"Probing dynamic oxygen exchange for hydrogen production with operando neutron diffraction","authors":"Daniel M. Telford, Alex Martínez Martín, Matthew D. Guy, Paul F. Henry, Martin O. Jones, Wenting Hu, Ian S. Metcalfe, John S. O. Evans","doi":"10.1038/s44286-025-00231-9","DOIUrl":"10.1038/s44286-025-00231-9","url":null,"abstract":"A chemical looping process exploiting the variable oxygen content of ABO3−δ perovskite materials can achieve super-equilibrium conversions of societally important reactions such as the water–gas shift reaction (CO + H2O ⇋ CO2 + H2). The approach relies on an evolving oxygen chemical potential gradient within a reactor bed. Here we show that the oxygen-sensitivity of operando neutron powder diffraction experiments can reveal how the reactor functions with high spatial- (≲1 cm) and time- (≲30 s) resolution. We show how this operando method enables rapid testing of new high-capacity bed materials without previous knowledge of their thermodynamic properties, and gives direct information on their long-term stability. We introduce how this memory reactor concept can also be applied to the steam methane reforming reaction (CH4 + H2O ⇋ CO + 3H2), the key preprocess to the water–gas shift reaction in H2 production. Efficient hydrogen production is a major societal challenge. Here the authors use operando neutron diffraction to quantitatively support the operating principle of a memory reactor that allows super-equilibrium operation of the water–gas shift reaction, which can also be used for steam methane reforming.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"2 7","pages":"447-455"},"PeriodicalIF":0.0,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12283380/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144710462","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

Neural network-assisted personalized handwriting analysis for Parkinson’s disease diagnostics 神经网络辅助帕金森病诊断的个性化笔迹分析

Nature Chemical Engineering Pub Date : 2025-06-02 DOI: 10.1038/s44286-025-00219-5

Guorui Chen, Trinny Tat, Yihao Zhou, Zhaoqi Duan, Junkai Zhang, Kamryn Scott, Xun Zhao, Zeyang Liu, Wei Wang, Song Li, Katy A. Cross, Jun Chen

{"title":"Neural network-assisted personalized handwriting analysis for Parkinson’s disease diagnostics","authors":"Guorui Chen, Trinny Tat, Yihao Zhou, Zhaoqi Duan, Junkai Zhang, Kamryn Scott, Xun Zhao, Zeyang Liu, Wei Wang, Song Li, Katy A. Cross, Jun Chen","doi":"10.1038/s44286-025-00219-5","DOIUrl":"10.1038/s44286-025-00219-5","url":null,"abstract":"Diagnosing Parkinson’s disease (PD) promptly, accessibly and effectively is crucial for improving patient outcomes, yet reaching this goal remains a challenge. Here we developed a diagnostic pen featuring a soft magnetoelastic tip and ferrofluid ink, capable of sensitively and quantitatively converting both on-surface and in-air writing motions into high-fidelity, analyzable signals for self-powered PD diagnostics. The diagnostic pen’s working mechanism is based on the magnetoelastic effect in its magnetoelastic tip and the dynamic movement of the ferrofluid ink. To validate the clinical potential, a pilot human study was conducted, incorporating both patients with PD and healthy participants. The diagnostic pen accurately recorded handwriting signals, and a one-dimensional convolutional neural network-assisted analysis successfully distinguished patients with PD with an average accuracy of 96.22%. Our development of the diagnostic pen represents a low-cost, widely disseminable and reliable technology with the potential to improve PD diagnostics across large populations and resource-limited areas. This study presents a diagnostic pen with ferrofluid ink that converts handwriting into sensing signals for Parkinson’s disease (PD) diagnostics. In pilot studies, neural network-assisted analysis of collected handwriting signals accurately distinguished patients with PD, demonstrating the pen’s potential as a low-cost, scalable tool for accessible diagnostics.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"2 6","pages":"358-368"},"PeriodicalIF":0.0,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s44286-025-00219-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145123130","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

Diagnosing Parkinson’s disease using a soft magnetoelastic smart pen 使用软磁弹性智能笔诊断帕金森病

Nature Chemical Engineering Pub Date : 2025-06-02 DOI: 10.1038/s44286-025-00228-4

引用次数: 0

Sensing boundary layers near the skin 感知皮肤附近的边界层

Nature Chemical Engineering Pub Date : 2025-05-23 DOI: 10.1038/s44286-025-00234-6

Alessio Lavino

引用次数: 0

Bringing robotics and automation into focus 让机器人和自动化成为焦点

Nature Chemical Engineering Pub Date : 2025-05-23 DOI: 10.1038/s44286-025-00236-4

引用次数: 0