Plasma Processes and Polymers最新文献

{"title":"Comparison of CO production and Escherichia coli inactivation by a kHz and a MHz plasma jet","authors":"Eloïse Mestre, Inna Orel, Daniel Henze, Laura Chauvet, Sebastian Burhenn, Sébastien Dozias, Fabienne Brulé-Morabito, Judith Golda, Claire Douat","doi":"10.1002/ppap.202300182","DOIUrl":"https://doi.org/10.1002/ppap.202300182","url":null,"abstract":"As carbon monoxide has a broad spectrum of biological activities, its production by plasma is a significant advantage in medicine. This paper presents a comparative study of the CO production of two plasma jets: a MHz-jet and a kHz-jet. Both were fed with a helium gas with <math altimg=\"urn:x-wiley:16128850:media:ppap202300182:ppap202300182-math-0001\" location=\"graphic/ppap202300182-math-0001.png\">\u0000<semantics>\u0000<mrow>\u0000<msub>\u0000<mtext>CO</mtext>\u0000<mn>2</mn>\u0000</msub>\u0000</mrow>\u0000${text{CO}}_{2}$</annotation>\u0000</semantics></math> admixture (0%–1%). CO was produced by <math altimg=\"urn:x-wiley:16128850:media:ppap202300182:ppap202300182-math-0002\" location=\"graphic/ppap202300182-math-0002.png\">\u0000<semantics>\u0000<mrow>\u0000<msub>\u0000<mtext>CO</mtext>\u0000<mn>2</mn>\u0000</msub>\u0000</mrow>\u0000${text{CO}}_{2}$</annotation>\u0000</semantics></math> dissociation and its maximal concentration was hundreds of parts per million, which is safe for clinical applications. For the same specific energy input, the CO production was more efficient for the kHz-jet than the MHz-jet. Both had antibacterial properties on <i>Escherichia coli</i>, and the addition of <math altimg=\"urn:x-wiley:16128850:media:ppap202300182:ppap202300182-math-0003\" location=\"graphic/ppap202300182-math-0003.png\">\u0000<semantics>\u0000<mrow>\u0000<msub>\u0000<mtext>CO</mtext>\u0000<mn>2</mn>\u0000</msub>\u0000</mrow>\u0000${text{CO}}_{2}$</annotation>\u0000</semantics></math> improved them for the MHz-jet, while it reduced them for the kHz-jet.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"46 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138824785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effects of PtAu and PtAg nanoparticles in hydrogel composites for enhanced environmental catalysis","authors":"Anyu Zhang, Dapeng Meng, Jianan Zhang, Zhao Wang","doi":"10.1002/ppap.202300201","DOIUrl":"https://doi.org/10.1002/ppap.202300201","url":null,"abstract":"Bimetallic nanoparticles were successfully synthesized within hydrogel composites by the glow discharge plasma reduction method at room temperature. The addition of Au or Ag effectively stabilized the valence state of Pt and prevented its oxidation. Due to the combination of low operating temperature and high specific surface area provided by the wrinkles and porous structures of gelatin, the metal particles exhibit high dispersion within the composite. The Gel-Pt3Au-5mM and Gel-Pt3Ag-5mM achieved a complete reduction of methylene blue (MB) in just 20 and 16 s, respectively. Properly selected components alter the electron density on the surface of composites, thereby enhancing the adsorbate's binding capability and reducing the activation energy barrier. This superior catalytic performance surpasses that of monometallic catalysts in the reduction of MB.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"281 1 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138576482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of the hard-soft acid–base principle in plasma-in-liquid processing","authors":"Moriyuki Kanno, Tsuyohito Ito, Kazuo Terashima","doi":"10.1002/ppap.202300156","DOIUrl":"https://doi.org/10.1002/ppap.202300156","url":null,"abstract":"Plasma, owing to its reactivity and nonequilibrium properties, is a unique field commonly used in material processing. In recent years, plasma processing with a liquid phase has attracted considerable attention owing to its important advantages, such as high electron density and the availability of a wide variety of reactions in solutions. However, plasma-in-liquid material synthesis is occasionally difficult to control and guidelines are lacking. In this study, we investigated whether the hard-soft acid–base (HSAB) principle, which is often applied in material synthesis, is applicable to the plasma-in-liquid process and demonstrated that organic solvent-derived substances produced by plasma-in-liquid processing reacted with solutes according to the HSAB principle. These results suggest that the HSAB principle may apply to plasma-in-liquid processing.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"162 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138576413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma polymerization of allyltrimethylsilane with single-filament dielectric-barrier discharges—Evidence of cationic surface processes","authors":"Lars Bröcker, Tristan Winzer, Nickolas Steppan, Jan Benedikt, Claus-Peter Klages","doi":"10.1002/ppap.202300177","DOIUrl":"https://doi.org/10.1002/ppap.202300177","url":null,"abstract":"Atmospheric-pressure plasma-enhanced film deposition with single-filament dielectric-barrier discharges (DBDs) in argon was investigated using allyltrimethylsilane (ATMS) as a precursor. Nonionic deposition in the discharge zone is largely precluded by a rapid cross-flow of the source gas, containing between 50 and 2000 ppm of ATMS. The performed experimental studies show a surprisingly large deposited film mass per transferred elementary charge between 220 and 540 amu. Film growth experiments, mass-spectrometric studies, and kinetic considerations led to the conclusion that the deposition process is a cationic surface polymerization, initiated by ions produced in the DBD by energy transfer from long-lived excited Ar species and propagated by addition of ATMS monomer molecules.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"42 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138576072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outside Front Cover: Plasma Process. Polym. 12/2023","authors":"Cristina Canal, Albert Espona-Noguera, Francesco Tampieri","doi":"10.1002/ppap.202370025","DOIUrl":"https://doi.org/10.1002/ppap.202370025","url":null,"abstract":"<b>Outside Front Cover</b>: This second part of the special issue on Plasma Medicine focuses on the interdisciplinary that is intrinsic in this field. At its heart, plasma medicine combines elements of physics, chemistry, biology, and engineering.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"100 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of rotating dielectric barrier on discharge characteristics in multi-needle-plate DBD","authors":"Guanglin Yu, Bangfa Peng, Nan Jiang, Ronggang Wang, Haoyang Sun, Junwen He, Kefeng Shang, Na Lu, Jie Li","doi":"10.1002/ppap.202300176","DOIUrl":"https://doi.org/10.1002/ppap.202300176","url":null,"abstract":"Enhancing discharge energy in dielectric barrier discharge (DBD) is vital for various applications. This study establishes a theoretical formula for predicting enhanced discharge in multi-needle-plate (MP) DBD, accounting for factors like needle count, rotation speed, and voltage frequency. Experiments validate the formula's accuracy, showing that precisely matched parameters result in enhanced discharge power, heightened streamer luminosity, and curved streamer channels. Lissajous figures in MP DBD exhibit elliptical shapes due to residual discharges during voltage fall. Statistical analysis of current pulses and discharge images confirms that dielectric plate rotation increases discharges and extends their duration during voltage fall. Numerical simulations highlight surface charge movement's role in enhancing the electric field and affecting streamer propagation direction in the air gap.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"33 1-2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Special issue: Renewable energies","authors":"Tomohiro Nozaki, Leon Lefferts, Jonas Baltrusaitis","doi":"10.1002/ppap.202377002","DOIUrl":"https://doi.org/10.1002/ppap.202377002","url":null,"abstract":"&lt;p&gt;This special issue highlights renewable energies (REs). Among them, renewable electricity is becoming the most accessible and flexible low-carbon energy source. It can potentially allow achieving a drastic reduction of CO&lt;sub&gt;2&lt;/sub&gt; emissions that will contribute to our future sustainable society. RE is not limited to the development of high-performance energy devices, such as photovoltaics, fuel cells, and secondary batteries. Importantly, the utilization of RE in sustainable transformation and valorization of widely available yet hard-to-activate small carbon and hydrogen-containing molecules, such as CO&lt;sub&gt;2&lt;/sub&gt;, CH&lt;sub&gt;4&lt;/sub&gt;, and H&lt;sub&gt;2&lt;/sub&gt;O, are vital for the production of low-carbon e-fuels and sustainable chemicals.&lt;/p&gt;\u0000&lt;p&gt;The transition to a low-carbon footprint using RE is known as the Power-to-X concept. Photochemistry, electrochemistry, and a combination of these technologies have been heavily studied and explored.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;1&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt; Microwave and resistive heating is also studied as an alternative low-carbon high-temperature heat source used in chemical processes.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;2, 3&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt; Further, thermal plasma technology attracts keen attention for cracking methane to (turquoise) hydrogen and carbon black. Thermal plasma powered by RE minimizes carbon emission, equivalent to CH&lt;sub&gt;4&lt;/sub&gt; steam reforming combined with CCS.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;4&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt;&lt;/p&gt;\u0000&lt;p&gt;More recently, plasma catalysis has become an emerging low-carbon footprint technology that can benefit from the efficient use of RE to control chemical reactions such as CH&lt;sub&gt;4&lt;/sub&gt; reforming, CO&lt;sub&gt;2&lt;/sub&gt; conversion, and N&lt;sub&gt;2&lt;/sub&gt; fixation.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;5&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt; Plasma-generated reactive species initiate chemical reactions at much lower temperatures than conventional thermal catalysis. In the meantime, plasma is generating simultaneously activated species (e.g., radicals) and heat, enabling operation of a catalytic reactor without an additional external heat source. This ability to perform endothermal reactions at relatively low temperatures is in contrast to an electrochemical reaction, such as a solid electrolyte, where the reaction temperature is limited in a narrow window due to the charge transport properties of electrolyte materials. Plasma catalysis is not limited by the combination of nonthermal plasma and heterogeneous catalysts but is closely related to standalone plasma technology for CO&lt;sub&gt;2&lt;/sub&gt; splitting and N&lt;sub&gt;2&lt;/sub&gt; fixation, which is also known as plasma conversion. Plasma catalysis has gained recognition as the key research topic in the Gordon Research Conference (Plasma Processing Science) over the decades. Highly cited review articles on plasma catalysis have also been accessible since late 2010.&lt;sup&gt;[&lt;/sup&gt;&lt;span&gt;&lt;sup&gt;6-10&lt;/sup&gt;&lt;/span&gt;&lt;sup&gt;]&lt;/sup&gt;&lt;/p&gt;\u0000&lt;p&gt;This special issue focuses on plasma–catalyst coupling technology for gas ","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"10 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cancer-targeting carbon quantum dots synthesized by plasma electrochemical method for red-light-activated photodynamic therapy","authors":"Ruoyu Wang, Jiayan Shen, Yupengxue Ma, Xiaoru Qin, Xing Qin, Feng Yang, Kostya (Ken) Ostrikov, Qing Zhang, Jie He, Xiaoxia Zhong","doi":"10.1002/ppap.202300174","DOIUrl":"https://doi.org/10.1002/ppap.202300174","url":null,"abstract":"Cancer-targeting carbon quantum dots (CQDs) with red-light absorption/emission featuring inherent biological functionality and deep biological penetration depth are promising for biomedical applications. However, traditional high-temperature and high-pressure synthesis processes result in unpredictable functionalities and uncontrollable optical properties due to the functional group loss. Here, plasma electrochemical treatment is introduced to overcome this issue. The synthesized CQDs in this work have excellent folate receptor cancer-targeting ability, red-light absorption/emission, and pronounced photodynamic therapy effect. The CQDs produced by the plasma electrochemical method preserve most of the functional groups from precursors, thus making them to fully inherit the bio-functionality and photophysical properties of precursors. This work opens new opportunities for plasma-based processes to controllably synthesize functionalized CQDs for diverse biomedical and environmental applications.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"10 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scaling up microwave excited plasmas—An alternative technology for industrial decarbonization","authors":"Marilena Radoiu, Ariel Mello","doi":"10.1002/ppap.202300200","DOIUrl":"https://doi.org/10.1002/ppap.202300200","url":null,"abstract":"The use of electricity for the industry's transition to a decarbonized economy requires optimization of the energy transfer to deliver efficient, cost-effective processes. Industrial demand for high-density plasmas over a wide pressure range has stimulated the use of microwave plasma (MWP) applications. In high-temperature processing, when microwaves of the correct frequency are absorbed by the plasma, the plasma particles absorb energy from the electromagnetic field and transfer it to the other particles through collisions, heating them. This rapid heating gives MWP properties that can be exploited to increase the conversion, selectivity, and/or energy efficiency of chemical processes. Here, we address questions raised by industrial users who wish to better understand the limitations of MWP applications.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"78 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PECVD and PEALD on polymer substrates (part II): Understanding and tuning of barrier and membrane properties of thin films","authors":"Teresa de los Arcos, Peter Awakowicz, Marc Böke, Nils Boysen, Ralf Peter Brinkmann, Rainer Dahlmann, Anjana Devi, Denis Eremin, Jonas Franke, Tobias Gergs, Jonathan Jenderny, Efe Kemaneci, Thomas D. Kühne, Simon Kusmierz, Thomas Mussenbrock, Jens Rubner, Jan Trieschmann, Matthias Wessling, Xiaofan Xie, David Zanders, Frederik Zysk, Guido Grundmeier","doi":"10.1002/ppap.202300186","DOIUrl":"https://doi.org/10.1002/ppap.202300186","url":null,"abstract":"This feature article presents insights concerning the correlation of plasma-enhanced chemical vapor deposition and plasma-enhanced atomic layer deposition thin film structures with their barrier or membrane properties. While in principle similar precursor gases and processes can be applied, the adjustment of deposition parameters for different polymer substrates can lead to either an effective diffusion barrier or selective permeabilities. In both cases, the understanding of the film growth and the analysis of the pore size distribution and the pore surface chemistry is of utmost importance for the understanding of the related transport properties of small molecules. In this regard, the article presents both concepts of thin film engineering and analytical as well as theoretical approaches leading to a comprehensive description of the state of the art in this field. Perspectives of future relevant research in this area, exploiting the presented correlation of film structure and molecular transport properties, are presented.","PeriodicalId":20135,"journal":{"name":"Plasma Processes and Polymers","volume":"44 1-2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138525709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}