Xingyu Wang’s Post

From materialsatextremes.com, our newest perspective article on hydrogen embrittlement, the author is my former student, Prof. Dr. Matheus Tunes, at Montanuniversität Leoben, Austria. He points out a missing link in the hydrogen detection techniques #materials #materialsscience #energy #hydrogen #hydrogenembrittlement

✨ We are proud to announce that the first exotic results have been presented. Dr. Maximilian Demnitz shared the results during the first National Symposium for Electrochemical Conversion organised by TU Delft e-Refinery. 👤 In Maximilian's words: ''It was an inspiring symposium, highlighting the chances, but also the limitations of using #electrochemistry for making the chemical industry emission-free.'' 📻 Keep tuned for more developments about the EXSOTHyC project. 🌱 #exsothyc #greenhydrogen #Electrolysis

My research paper is out in Journal of Materials Chemistry A! Titled "Covalency-aided electrochemical CO2 reduction to CO on sulfide-derived Cu–Sb", we reveal a sulfide-derived material that is able to produce, not HCOOH unlike CuSx-derived catalysts, but CO. We achieve a maximum Faradaic Efficiency for CO of 80.5%. We also include DFT calculations that show that sulfur on Sb sites strengthens *COOH binding while weakening *CO binding, which is similar to the "covalency-aided" mechanism revealed originally by Kim et al (2014). Read the full article here: https://lnkd.in/gt4D3Krj Thank you so much to my postdoc mentors Albertus Denny Handoko and Ying Chuan (Bobby) Tan for their guidance, DFT team Kah Meng Yam, Lavie Rekhi and Prof Tej Choksi, and my supervisors Profs Yanwei Lum and Lydia Wong! Thanks also to Joel Tan and Yong Wang (Frank) for their help with synthesis and TEM respectively. #electrochemistry #co2reduction #catalyst #electrolysis #sustainability #research

Excited!!! Congratulations to all the co-authors for their hard work!!! Recent research has highlighted heterogeneous photocatalysts as a feasible contender for addressing energy shortages and environmental cleanup. One of the best semiconducting photocatalysts used in wastewater treatment, disinfection, and energy evolution is graphitic carbon nitrate (g-C3N4). Researchers have used carbon quantum dots (CQDs) to maximize and enhance the photocatalytic activity of g-C3N4 and to get over the material's limits due to photoinduced charges, partial surface area, and insufficient light-capturing difficulties. In this context, the fundamentals of CQDs and g-C3N4 are described in length, along with their structural state, synthesis, and modification techniques. The classification, manufacturing procedure, and characterization of CQDs/g-C3N4 are then highlighted in this paper. Following that, it is shown how CQDs/g-C3N4 photocatalysts are used in dye removal and hydrogen evolution studies. The discussion of CQDs/g-C3N4's present hurdles, unmet needs, and future research prospects concludes while keeping in mind their practical applications. This study shows that by embedding CQDs, the influence of charges, morphological modification, and textural quality of g-C3N4 have been altered. It is anticipated that this review will offer a practical overview and comprehension of CQDs embedded with g-C3N4 photocatalysts in order to promote their utilization. The ultimate goal of this review may be to impart a fundamental understanding of photocatalysis while also providing an expository evaluation of the most recent advancements in g-C3N4/CQDs photocatalysts in the sectors of energy and environmental security.

Turning pesky pollutant into valuable materials: the electrochemical reduction of carbon dioxide (#CO2RR) is a promising technology for sustainable chemical manufacturing. Copper (Cu) catalysts are central to this process due to their ability to produce a wide range of products. However, enhancing the selectivity and stability of these catalysts remains a significant challenge. Walter Agustin Parada Villarroel, Karl Mayrhofer and Pavlo Nikolaienko (Helmholtz-Institut Erlangen-Nürnberg für Erneuerbare Energien & FAU Erlangen-Nürnberg) explore the use of #IonicLiquids (ILs) to modify Cu catalysts, with a particular focus on combining an electrochemical #FlowCell coupled with real-time electrochemical #MassSpectrometry for product detection. Using hydrophobic ionic liquids (ILs) to modify carbon-supported Cu catalysts - the so-called “solid catalyst with ionic liquid layer” (SCILL) approach – the team found distinct patterns in product selectivity, particularly for C1 to C3 products, highlighting the impact of IL cation size on reaction outcomes. The real-time detection capabilities of their setup can help provide deeper insights into the reaction mechanisms, helping to pave the way for more efficient and selective CO2RR processes. Our Pick of the Week, published #OpenAccess in #ChemElectroChem: "Real-Time Product Detection during #CO2 Electroreduction on SCILL-Modified Cu Catalysts" https://ow.ly/iTrV50SI6bQ

Researchers at Fraunhofer UMSICHT and Ruhr University Bochum have discovered that #carbon-based #bipolar #plates can be a more cost-efficient and scalable alternative to the #titanium #bipolarplates typically used in #PEM #electrolysis.   The focus of their investigation was a new carbon-based bipolar plate developed and patented by Fraunhofer UMSICHT. It consists of a thermoplastic polymer-bonded carbon matrix with conductive additives such as carbon black and is produced using a powder-to-roll process. This material and production method enable continuous manufacturing of an easily processed and welded bipolar plate, already commercially used in redox flow batteries.   The researchers subjected this carbon-based bipolar plate and a titanium bipolar plate to comprehensive ex-situ and in-situ tests. The ex-situ tests included electrochemical corrosion studies, scanning electron microscope analysis, and weight loss measurement to assess real-world suitability and parameter choices. During in-situ tests, the plates underwent accelerated ageing tests with alternating current densities between 1 and 3 A cm⁻² for over 500 hours.   The scientists have published their results under the title ‘Bipolar Plates in PEM Water Electrolysis: Bust or Must?’ in the journal ‘Advanced Energy Materials’. In essence, they have discovered that the carbon-based bipolar plate has an ageing rate in the low µV h⁻¹ range and thus shows promising performance. This means that it can certainly compete with titanium bipolar plates and represents a much more cost-effective alternative. Another advantage: due to its material properties such as weldability, it enables completely new designs for PEM #electrolysers. The potential to replace titanium bipolar plates in the PEM electrolysis #stack and make electrolysis scalable at the same time is therefore definitely there. The task now is to further investigate and, if necessary, optimize the new material in order to further reduce the costs of electrolysis and thus make the production of #greenhydrogen more #economical.

Have you had a chance to check out our recent publications in ACS Omega? https://lnkd.in/eNMM4f77 It provides valuable insight into the use of Bismuth-Based Z-Scheme Heterojunction Photocatalysts for the remediation of contaminated water, the Challenges, and prospects. The article covers bismuth-based semiconductors, synthesis methods, and strategies to improve their efficiency in wastewater decontamination. Additionally, it explores the Z/S scheme junction for photocatalytic degradation of dyes and antibiotics. It will be worth reading the article and referring to it.

Reaching out to the community interested in #electrochemistry and #methane_conversion our article “Challenges in the selective electrochemical oxidation of methane: Too early to surrender” is out, just published in Current Opinion in Electrochemistry, Elsevier, with Marco Altomare, Georgios Katsoukis and Guido Mul at Universiteit Twente MESA+ NWO (Dutch Research Council) Direct methane-to-methanol conversion is still an attractive alternative to the energy-intense and environmentally impactful steam methane reforming route - however the selective electrochemical oxidation of methane, for example to methanol, is hindered by poor conversion rates and selectivity. In this article, we examine the reasons that may have led to the lack of a breakthrough in the field so far, such as methane mass transport and concentration limitations. We encourage fellow researchers to develop and work along harmonized research protocols and apply in-situ spectroscopy techniques over model electrodes to understand the reaction mechanism in order to design more selective catalysts.   https://lnkd.in/eGgxGnxX   #sustainability #methaneconversion #currentopinion