Pedro H. S. Borges, Natália M. Caldas, Lucas V. de Faria, Rafael M. Dornellas and Edson Nossol*,
{"title":"","authors":"Pedro H. S. Borges, Natália M. Caldas, Lucas V. de Faria, Rafael M. Dornellas and Edson Nossol*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"5 4","pages":"12260–12268 XXX-XXX"},"PeriodicalIF":5.7,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmaterialsau.5c00025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579077","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}
Ioanna Itskou, Sharminaz C. Sageer, Daniel M. Dawson, Andreas Kafizas, Irena Nevjestic, Catriona M. McGilvery, Matyas Daboczi, Gwilherm Kerherve, Salvador Eslava, Sandrine Heutz, Sharon E. Ashbrook* and Camille Petit*,
{"title":"","authors":"Ioanna Itskou, Sharminaz C. Sageer, Daniel M. Dawson, Andreas Kafizas, Irena Nevjestic, Catriona M. McGilvery, Matyas Daboczi, Gwilherm Kerherve, Salvador Eslava, Sandrine Heutz, Sharon E. Ashbrook* and Camille Petit*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"5 4","pages":"12260–12268 XXX-XXX"},"PeriodicalIF":5.7,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmaterialsau.5c00007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579078","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}
ACS Materials AuPub Date : 2025-07-08DOI: 10.1021/acsmaterialsau.5c00062
Changliang An, Samuel A. Oyon, Fei Zhang, Ha Na, Jake Carrier, Daniela Radu and Cheng-Yu Lai*,
{"title":"Bioactive Electrospun Polycaprolactone Films with Gallic Acid-Loaded Mesoporous Silica Nanoplatelets for Enhanced Seed Germination","authors":"Changliang An, Samuel A. Oyon, Fei Zhang, Ha Na, Jake Carrier, Daniela Radu and Cheng-Yu Lai*, ","doi":"10.1021/acsmaterialsau.5c00062","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.5c00062","url":null,"abstract":"<p >Enhancing seed germination and promoting early seedling growth are among the primary objectives in advancing agricultural productivity. To address these needs, this study developed electrospun nanofiber films composed of polycaprolactone (PCL) incorporating gallic acid (GA)-loaded, amine-functionalized mesoporous silica nanoplatelets (H-MSN-NH<sub>2</sub>@GA). The mesoporous silica nanoplatelets (H-MSNs) with a hexagonal morphology were synthesized by using a sol–gel approach. These nanoplatelets were subsequently functionalized with amine groups using 3-(2-aminoethylamino)propyltrimethoxysilane (AAPTS) to enable efficient GA loading. The functionalized and nonfunctionalized H-MSNs, both with and without GA, were incorporated into a PCL matrix to produce uniform nanofiber films via electrospinning. A series of films with varying compositions were fabricated to evaluate the effect of the additive content on functionality. All resulting films displayed consistent hydrophobic characteristics and high water vapor transmission rates, exceeding 3000 g/m<sup>2</sup>/day. This indicated that incorporation of the silica-based additives did not significantly alter the films’ permeability or surface wettability. Tensile tests revealed distinct variations in maximum force and tensile displacement among the five samples, indicating composition-dependent mechanical properties. At 72 h, the 10% H-MSN-NH<sub>2</sub>@GA/PCL film achieved 100% germination for corn seeds and a 70% higher germination rate for bean seeds compared to the control group. Root length analysis showed that 10% H-MSN/PCL and 1% H-MSN-NH<sub>2</sub>@GA/PCL promoted corn root growth, while 10% H-MSN-NH<sub>2</sub>@GA/PCL had an inhibitory effect. For bean seeds, root elongation was enhanced by 10% H-MSN/PCL, 1% H-MSN-NH<sub>2</sub>@GA/PCL, and 10% H-MSN-NH<sub>2</sub>@GA/PCL. These findings provide valuable insights into the effects of mesoporous silica nanoplatelets with and without GA in electrospun fiber films, offering a sustainable and functional alternative to conventional germination substrates.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"5 5","pages":"858–869"},"PeriodicalIF":6.5,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmaterialsau.5c00062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018321","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}
ACS Materials AuPub Date : 2025-07-03DOI: 10.1021/acsmaterialsau.5c00034
Casey E. Beall, Emiliana Fabbri*, Juliana Bruneli Falqueto*, Sebastian Siegrist, Jinzhen Huang, Natasha Hales, Dominika Baster, Mario El Kazzi, Sayaka Takahashi, Yuto Shirase, Makoto Uchida and Thomas J. Schmidt,
{"title":"Composite Bifunctional Electrocatalyst for the Oxygen Reduction and Evolution Reactions","authors":"Casey E. Beall, Emiliana Fabbri*, Juliana Bruneli Falqueto*, Sebastian Siegrist, Jinzhen Huang, Natasha Hales, Dominika Baster, Mario El Kazzi, Sayaka Takahashi, Yuto Shirase, Makoto Uchida and Thomas J. Schmidt, ","doi":"10.1021/acsmaterialsau.5c00034","DOIUrl":"https://doi.org/10.1021/acsmaterialsau.5c00034","url":null,"abstract":"<p >Bifunctional oxygen electrocatalysts are subjected to stringent performance and stability criteria. The catalyst must achieve high oxygen evolution reaction (OER) activity while in electrolyzer operation, as well as high oxygen reduction reaction (ORR) activity while in fuel cell operation. Additionally, the catalyst must be stable over a wide potential range and withstand alternating reducing and oxidizing potentials. In this work, a composite Ni<sub>0.95</sub>Fe<sub>0.05</sub>O<sub>1±δ</sub>/NiCo<sub>2</sub>O<sub>4</sub> is rigorously tested as a bifunctional catalyst for anion exchange membrane (AEM) fuel cell and electrolyzer operation. An alternating potential stability test is performed, which unveils the areas where the bifunctional catalyst needs improvement. The OER activity of the catalyst is not hindered by the harsh conditions. However, the ORR activity deteriorates. Both the fundamental rotating disk electrode (RDE) methodology and AEM single-cell testing are used to evaluate the electrode activity and stability. The difference in results between the two techniques emphasizes the importance of evaluating the catalyst under applied conditions. The results of this study provide guidance for the development of new high-performing bifunctional catalysts.</p>","PeriodicalId":29798,"journal":{"name":"ACS Materials Au","volume":"5 5","pages":"798–808"},"PeriodicalIF":6.5,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmaterialsau.5c00034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018311","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}
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