We report that self-supporting mesoporous platinum 3D nanowires with a single diamond (SD) morphology and a high specific surface area of 40.4 m g demonstrated enhanced stability toward the oxygen reduction reaction (ORR). These were found to be superior to commercially available carbon-supported Pt nanoparticles (Pt/C). After 1000 potential cycles, there was a 21% loss in surface area for SD-Pt, as compared with a 40.3% loss for Pt/C with no reduction in their half-wave potential (measured at = 3.0 mA cm), whereas the Pt/C catalyst showed a 11.9 mV decrease. Our findings revealed that our SD-Pt thin films also exhibited excellent ORR activity, which offers significant potential for their application as high-performance cathode materials in alkaline fuel cells.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11886918 | PMC |
| http://dx.doi.org/10.1021/acsomega.4c06385 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development of a Zeolitic Imidazolate Framework Based Superhydrophobic Surface with Abrasion Resistance, Corrosion Protection, and Anti-icing.
Langmuir
March 2025
Jiangxi Province Key Laboratory of Light Alloy, School of Advanced Manufacturing, Nanchang University, Nanchang 330031, P.R. China.
Herein, a superhydrophobic surface was designed and fabricated based on the "lotus effect" construction mechanism. The zeolitic imidazolate framework (ZIF-90) micro-nanoparticles were initially synthesized via a one-pot method, combined with long-chain stearic acid (STA), and subsequently embedded in polyvinyl butyral (PVB) to form a superhydrophobic surface at room temperature. The superhydrophobic surface demonstrated mechanical stability and retained its superhydrophobicity with a water contact angle (CA) greater than 150°, even at a wear distance of 400 cm.
View Article and Find Full Text PDFMicroenvironment Tailoring for Electrocatalytic CO Reduction: Effects of Interfacial Structure on Controlling Activity and Selectivity.
J Am Chem Soc
March 2025
Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore.
The performance of the electrocatalytic CO reduction reaction (CORR) is highly dependent on the microenvironment around the cathode. Despite efforts to optimize the microenvironment by modifying nanostructured catalysts or microporous gas diffusion electrodes, their inherent disorder presents a significant challenge to understanding how interfacial structure arrangement within the electrode governs the microenvironment for CORR. This knowledge gap limits fundamental understanding of CORR while also hindering efforts to enhance CORR selectivity and activity.
View Article and Find Full Text PDFBio-preservative potential of marjoram and fennel essential oil nano-emulsions against toxigenic fungi in citrus: integrating , -, and - approaches.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess
March 2025
Food Toxicology and Contaminants Department, National Research Centre, Giza, Egypt.
Citrus fruits, known for their vibrant flavours and health benefits, are susceptible to fungal attacks, particularly from toxigenic fungi, which pose a significant pre- and post-harvest hazard. However, aromatic oils and their nanoparticles may effectively address this issue. Marjoram and fennel oils, alongside their nanoparticles, were extracted, and their aromatic constituents and antimicrobial activities were evaluated.
View Article and Find Full Text PDFLipoylation inhibition enhances radiation control of lung cancer by suppressing homologous recombination DNA damage repair.
Sci Adv
March 2025
Department of Radiation Oncology, Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
Lung cancer exhibits altered metabolism, influencing its response to radiation. To investigate the metabolic regulation of radiation response, we conducted a comprehensive, metabolic-wide CRISPR-Cas9 loss-of-function screen using radiation as selection pressure in human non-small cell lung cancer. Lipoylation emerged as a key metabolic target for radiosensitization, with lipoyltransferase 1 (LIPT1) identified as a top hit.
View Article and Find Full Text PDFEnhanced activity and self-regeneration in dynameric cross-linked enzyme nanoaggregates.
Sci Adv
March 2025
Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, P.R. China.
Directed evolution, enzyme design, and effective immobilization have been used to improve the catalytic activity. Dynamic polymers offer a promising platform to improve enzyme activity in aqueous solutions. Here, amphiphilic dynamers and lipase self-assemble into nanoparticles of 150- to 600-nanometer diameter, showing remarkable threefold enhancement in catalytic activity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!