Environmental #RSCEnv’s Post

🌟 Check out the presentation by University College Cork PhD student Vaishali Vardhan at EUROSENSORS XXXVI, where she showcased her research on ambipolar silicon junctionless nanowire transistors (Si-JNTs)! 💡🌐 Vaishali demonstrated how these innovative transistors exhibit a remarkable dual response to the oxidative pollutant NO2, leading to significant changes in ion-current, threshold voltage, and mobility across a wide concentration range (250 ppb - 50 ppm). 📈✨ By leveraging their high surface-to-volume ratio and ambient operation capabilities, Si-JNTs offer promising advancements in gas sensing technologies, enabling precise detection of NO2 and potentially other atmospheric radicals. 🌍🔍 This research paves the way for developing multivariate calibration models for gas detection, setting the stage for future applications in environmental monitoring and safety. 🚀🔬 👉 Find the full insights here: https://lnkd.in/exXupijT 🙌 Those involved in the research: UCC Research UCC Environmental Research Institute Subhajit Biswas Stig Hellebust Yordan M. Georgiev Leonidas Tsetseris #GasSensors #PhDResearch #AmbipolarTransistors #EnvironmentalMonitoring #InnovativeResearch #Eurosensors2024 #RADICAL #RadicalDetection #nanotechnology

I'm excited to share that our latest research paper has been published today in the Journal of the Electrochemical Society! ECS - The Electrochemical Society🎉 The full paper can be found here: https://lnkd.in/d_gzqDAg In our study, we investigated the impact of carbon support design and pore morphology on the performance and longevity of proton exchange membrane fuel cells. Here are some important discoveries: - Durability vs. performance trade-off: Porous carbon supports show a ~5-fold improvement in Pt surface area retention compared to solid carbons due to the protective effect of internal pores, though they suffer from oxygen transport limitations and thus performance at high current densities. - Optimized performance and durability with accessible pores: Catalysts with accessible porous carbon supports strike a balance, preserving durability (~3-4-fold improvement in ECSA retention over solid carbon) while optimizing performance at all current densities, attributed to better oxygen transport that boosts high current density performance. - Performance evolution for porous carbons: Over 200,000 voltage cycles, we monitored changes in catalyst accessibility and performance. The initial performance boost in porous carbon is likely due to oxidative pore opening from repeated low-potential operation. Conversely, the rise in dry Pt utilization especially after extensive aging tests can be attributed to the continuous migration of Pt particles to the external carbon surface. A special thanks to my co-authors Timon Lazaridis and Hubert Gasteiger for their great collaboration and invaluable contributions. #PEMFC #Electrochemistry #Sustainability #CleanEnergy

The #UniSysCat group of Prof. Kallol Ray is receiving prominent support from Seoul: Prof. Wonwoo Nam from the Ewha Womans University visits the group Humboldt-Universität zu Berlin to work on green catalytic systems. Wonwoo Nam is known for his outstanding and fundamental contributions to bioinorganic chemistry, in particular bioinorganic catalytic processes. He comes as an Einstein Visiting Professor and holds a Humboldt Research Award. The joint project "Developing Green Catalytic Systems Utilizing Bioinspired Metal Catalysts" is about how #metalloenzymes can be used for artificial #photosynthesis. Read more: https://lnkd.in/ejwHama5 #greenchemistry #catalysis #berlin #research #science #chemistry #chemie #katalyse #forschung #sustainability #energy Einstein Foundation Berlin Alexander von Humboldt Foundation

Excited to share our recent collaboration with Polytechnique Montréal (Professor Clara Santato and Molood Hoseinizadeh). In this work, we introduce the first use of our MWCNT produced from our patented technology: natural gas photo reforming at ambient conditions as multifunctional conductive additives. By adding oxygen surface functionalized MWCNT (O-MWCNT) to biosourced, redox-active Sepia melanin, we have established a novel pseudocapacitive electrode material through a one-pot water ultrasonication process, without the use of any surfactant or organic/inorganic binder. These O-MWCNTs have been instrumental in facilitating (i) the formation of efficient conductive pathways between Sepia granules and (ii) enhancing the efficiency of electronic coupling between the ultrasound-treated carbon cloth and the Sepia melanin granules. The MWCNT:Sepia-based semi-solid-state symmetric supercapacitors exhibit a high capacitance of up to 118 F g−1 at 0.5 A g−1. Furthermore, these devices offer a high energy density of 18 Wh kg−1, a power density of up to 221 W kg−1, and demonstrate remarkable cycling stability with 100% capacitance retention and Coulombic efficiency after 10,000 cycles. Additionally, the supercapacitors consistently perform well when subjected to mechanical bending at various angles. https://lnkd.in/gy9MN-Vt

I am thrilled to announce the publication of our recent scientific paper in RSC Energy Advances! Glad to say that this is the second first-author publication this month. 🎉 Our research focuses on the utilization of electrospun composite nanofibers for high-energy-density hybrid supercapacitor electrodes. Our study explores the utilization of electrospun composite nanofibers for the fabrication of high-performance supercapacitor electrodes. Electrospinning various compositions followed by carbonization and activation with CO2 yielded C/Cu/Cu2O nanocomposite fibers. These fibers exhibited a specific capacitance of 253.4 F/g at 1 A/g current density in a 6 M KOH electrolyte. Find the full paper: https://lnkd.in/g-vYWpup Grateful for the collaboration and support from our colleagues (Yafen Tian, and Daniel Tague) and mentors (John Ferraris and Ken Balkus). #Research #Science #Publication #Supercapacitors #Nanofibers #MaterialsScience #EnergyStorage #STEM #BatteryTechnology #SupercapacitorResearch #Electrochemistry #RenewableEnergy 📚🔬

Can natural waste an by-products be used to improve thermal properties of compressed earth blocks? This the topic of my PhD research poster presented at the 1st UMinho Research and Innovation Open Days 🌱 #PhDResearch #SustainableBuildings #SustainableMaterials #ISISE

🚀 Exciting News in Energy Storage Research! 🌐 Unveiling the Mysteries of Carbon Black Materials for Potassium-Ion Batteries! 🔋🔬 Dive into the world of cutting-edge research with the article titled "Exploring nature-behaviour relationship of carbon black materials for potassium-ion battery electrodes." 📚 This groundbreaking work sheds light on the electrochemical intricacies of widely used carbon black species (Super P, Super C65, and Super C45) in the realm of potassium-ion battery systems. 🌟 🔍 What makes this research stand out? Unprecedented insights into the pseudo-amorphous structure effect on potassium ion storage mechanisms. In-depth exploration of surface-dominated reactions through Dunn’s and Trasatti’s methods. Correlation of electrochemical features with surface properties and functional groups using X-ray photoelectron spectroscopy. 🌐 This work is a game-changer for large-scale stationary storage applications, providing essential tools to understand the active role of carbon black additives in secondary cells. Ready to unravel the secrets? Read the full article here: https://lnkd.in/gPf2ghWW Download link: https://lnkd.in/g7J3HTvz #EnergyStorage #Innovation #PotassiumIonBatteries #ResearchHighlight 🌍🔬

Interested in Lignin ? Please find our new book with excellent contributions covering various recent aspects of lignin from its chemistry to valorisation

Lignin Chemistry - Characterization, Isolation & Valorization Well done to the Bernal Institute, University of Limerick researchers & cohort on their comprehensive chapter addressing "Carbon (Nano)Fibers & Carbon Materials from Lignin & Their Applications" in this new book on Lignin Chemistry from Wiley, edited by Yuhe Liao & Bert Sels. Lead author Muhammad Muddasar, with Anne Beaucamp Mc Loughlin, Mark Vaughan, Mario Culebras Rubio, Misbah Mushtaq, Marina Moraes Leite, Tadhg Kennedy, led by Maurice N Collins. Part supported by Ireland's Department of Agriculture, Food and the Marine Chapter spans lignin materials, carbon fibers, spinning, energy applications, sensing [e.g. strain / pressure] and more ... #advancedmaterials #anode #battery #biopolymer #bioeconomy #biomaterials #carbon #carbonfiber #circulareconomy #composite #electrochemistry #electrospin #energy #ICT #irishbioeconomy #lignin #materials #sensors #sustainability #sustainablematerials #thermoelectrics