Anthony Chun Yin Yuen’s Post

Read and download for FREE 👉 https://lnkd.in/d2u4gHTt 📜 Novel Anodic TiO2 Synthesis Method with Embedded Graphene Quantum Dots for Improved Photocatalytic Activity 🔑 #anodic #TiO2; #carbonnanoparticles; #dopedTiO2; #photocatalysis; #composite 🎓 By Ainārs Knoks, Līga Grīnberga and Janis Kleperis 🏛 University of Latvia (Latvijas Universitāte) Photocatalytic degradation of pollutants have a high potential for sustainable and renewable uses. TiO2 is a widely studied photocatalyst due to its high chemical and photochemical stability and wide range of applications. However, the wide band gap and low capacity of photo-induced charge separation provide lower catalytic activity; thus, improvement of these properties must be found. The doping of TiO2 with other elements, such as carbon nanoparticles (CNP) in a quantum dot form, offers a promising pathway to improve the aforementioned properties. In addition, in situ doping methods should be investigated for practical scalability, as they offer the advantage of integrating dopants directly during material synthesis, ensuring a more uniform distribution and better interaction between the dopant and the host material, in turn leading to more consistent photocatalytic properties. Current technologies primarily involve nanoparticle combinations. This work focuses on the development of a novel in situ synthesis methodology by the introduction of three different graphene-based quantum nanodots into anodic TiO2 and the following investigation of structural, morphological, and photocatalytic properties. Results indicate that the introduction of CNP allows for the shift of a set of parameters, such as the optical band gap, increased photo-induced charge carrier density of TiO2/CNP composite, and, most importantly, the change of crystalline phase composition depending on added CNP material. Research indicates that not only a higher concentration of added CNP enhances higher photocatalytic activity as tested by the degradation of methylene blue dye, but also the type of CNP determines final crystalline phase. For the first time brookite and rutile phases were obtained in anodic titania synthesized in inorganic electrolyte by introducing hydrothermally treated exfoliated graphene. #article #peerreviewed #openaccess #callforreading #scientificpublishing #mdpi #mdpicoatings

This article investigates the development and performance of Bi2WO6/carbon nano-onion (CNO) composites as advanced electrode materials for pseudocapacitors. Utilizing a hydrothermal synthesis method, the composites exhibited enhanced electrochemical properties due to the combination of Bi2WO6's pseudocapacitive characteristics and CNO's excellent conductivity. The Bi2WO6/CNO composite achieved a specific capacitance of 640.2 F/g at a current density of 3 mA/cm², significantly outperforming pure Bi2WO6 (359.1 F/g). Additionally, the composite maintained 90.15% of its initial capacitance after 1,000 charge-discharge cycles, demonstrating superior cycling stability. This improvement is attributed to the increased surface area and optimized electron pathways provided by CNOs. The study highlights the potential of these composites for high-performance energy storage applications. For more details, please continue reading the full article under the following link: https://lnkd.in/e_r-rjQQ -------------------------------------------------------- In general, if you enjoy reading this kind of scientific news articles, I would also be keen to connect with fellow researchers based on common research interests in materials science, including the possibility to discuss about any potential interest in the Materials Square cloud-based online platform ( www.matsq.com ), designed for streamlining the execution of materials and molecular atomistic simulations! Best regards, Dr. Gabriele Mogni Technical Consultant and EU Representative Virtual Lab Inc., the parent company of the Materials Square platform Website: https://lnkd.in/eMezw8tQ Email: gabriele@simulation.re.kr #materials #materialsscience #materialsengineering #computationalchemistry #modelling #chemistry #researchanddevelopment #research #MaterialsSquare #ComputationalChemistry #Tutorial #DFT #simulationsoftware #simulation

A recent publication from our researchers at University of Adelaide and industry partner Ceylon Graphene Technologies (Pvt) Ltd. Great to see such collaborations resulting in scientific outputs! Here, graphene materials are investigated as a promising carbon capture technology. Selected text from the highlights: "Kinetics of CO2 adsorption was explored on three graphene materials. Activation parameters and rate limiting kinetics were explored. CO2 adsorption rate is governed by film diffusion and intraparticle diffusion." Prof Dusan Losic, Pei Lay Yap, Jun Ma, Manju Gunawardana, Hong Huynh Nguyen #carboncapture #co2adorption #2dmaterials #graphene https://lnkd.in/gAKH7sbE

Studying quantum materials not only offers a path for developing new technologies but also provides a platform to advance scientific understanding. In this application note, we demonstrated the use of the M81-SSM system to obtain a Landau fan using a bilayer graphene sample and performed the canonical data analysis, converting gate voltage to carrier density, extracting energy states degeneracies, and determining mobility. https://hubs.li/Q02nShMT0 #Quantum #HallEffect #Characterization #Nanomaterials

Tuesday publication update! 📖 In this newest publication in ACS Advanced Nano Materials, researchers from the #KULeuven have used the #AtmosphereAX system to look at passive adsorption materials for NOx removal. Authors Sreeprasanth Pulinthanathu Sree Claudio Bellani , Rainer Straubinger have investigated the dynamic behavior of palladium species impregnated onto zeolite under hydrothermal oxidation conditions, and using vapor! 🔬Using #Protochips' in situ gas phase TEM including the #AXON software, the formation and dispersion of Pd nanoparticles could be observed supported on a RHO zeolite. By heating the zeolite powder impregnated with a Pd complex up to 750°C within the TEM under an O2 atmosphere, water vapor, and argon, the dynamic evolution of Pd particles was shown. 🌡️ At lower temperatures, volatile masses began to form and gradually coalesced as the temperature increased. At the peak temperature of 750°C, a dispersal process occurred, releasing highly mobile smaller particles. This behavior underscores the intricate dynamics of Pd species under these conditions. ⚙️ The in situ TEM studies captured the dynamic changes of Pd nanoparticles, revealing mechanisms such as rapid thermally induced reduction and Ostwald ripening. These insights are crucial for optimizing and preparing supported noble-metal materials and catalysts. Studies like these enhance the understanding of nanoparticle formation on supports for catalysis and underscore the potential of in situ TEM as a powerful method for investigating and improving the synthesis of various catalytic nanomaterials. Read the entire paper here: https://hubs.li/Q02zPSwJ0 #Findyourbreakthrough #insituelectronmicroscopy #gascellmicroscopy #TEM #catalysis #heterogeneouscatalysis #nanoparticlesynthesis

"By leveraging physics and nature’s own “toolbox,” specifically biomolecules like proteins, Kisley aims to understand how these elements can be extracted from complex sources. The biomolecules can be used in water-based solutions and be immobilized on solid supports. Kisley will specifically be imaging how size and porosity effect the ability to separate #REEs." https://lnkd.in/dEfbEWzH

Shuo Liu, Chaochao Dun and collaborators introduce a transformative non-equilibrium flame aerosol technique for synthesizing high-entropy nanoceramics. This scalable, one-step process enables the production of high-entropy oxide nanoceramics with an unprecedented diversity of crystal structures, including fluorite-phase materials that integrate up to 22 distinct cation elements. The method’s capacity for entropic stabilization and grain refinement significantly improves the thermal stability of these nanostructures. In a representative application, a Pt-(MgCoNiCuZn)O high-entropy single-atom catalyst showed superior activity and long-term stability, maintaining constant CO2 conversion over 670 h and dramatically outperforming conventional catalysts. The general approach opens a vast composition and structure space for the creation of high-entropy oxide nanomaterials for application across diverse fields, including catalysis, energy storage, sensing, and thermal management. #Matter https://lnkd.in/edZBaZdT

Researchers have made #goldene - a single layer of interconnected gold atoms — with a relatively simple method. —-//- “ The Linköping team suggests that goldene might be useful in applications in which gold nanoparticles already show promise. Light can generate waves in the sea of electrons at a gold nanoparticle’s surface, which can channel and concentrate that energy. This strong response to light has been harnessed in gold photocatalysts to split water to produce hydrogen, for instance. Goldene could open up opportunities in areas such as this, Hultman says, but its properties need to be investigated in more detail first. “… #goldene #graphene #nanotechnology

Congrats Gengnan Li! https://lnkd.in/eVhpu9ZM 🌟 Research Alert! 🌟 Study from Brookhaven National Laboratory and Stony Brook University 🌍🔬 Work led by Gengnan Li where we explored how platinum (Pt) and cerium oxide (CeO2) work together during the water-gas shift reaction. This reaction helps produce clean hydrogen fuel, which is important for our future energy needs. 🚀🔋 We used advanced tools at Brookhaven National Laboratory's National Synchrotron Light Source II #NSLSII and Center for Functional Nanomaterials #CFNatBrookhaven to see what happens to these particles during the reaction. We found that the shape and structure of the CeO2 support affects how well the Pt particles can do their job. This research helps us understand how to make better catalysts for cleaner energy. Ashley Head Dmitri Zakharov Tianhao Hu Ira Waluyo Adrian Hunt Priscilla Antunez PhD #CleanEnergy #HydrogenFuel #ScientificResearch #BrookhavenNationalLaboratory #StonyBrookUniversity #Catalysis #Innovation

Water molecules are special in many ways – their shape and the way their electrons are distributed means each #H2O molecule has two electric poles. This polarity allows #water to electrically attract to other water molecules and other similarly polar molecules. This attraction, called ‘hydrogen bonding’, and the #structure among the molecules that the hydrogen bonds form is vital to understanding water’s unique behaviour and how it reacts chemically, including in processes essential to life. #watermolecules #hydrogenbonding ⚗ Implications on other areas of chemistry: https://lnkd.in/ei4Kk8K3 Linda Young, Robin Santra, Argonne National Laboratory,Universität Hamburg, Deutsches Elektronen-Synchrotron DESY