In this work, the electrochemical oxidation of carbohydrates (glucose, fructose, and sucrose) was induced at the interface of Pt-nanoparticles supported on different carbon-based materials as carbon vulcan (C) and carbon black (CB). It was found that the support plays an important role during carbohydrates electro-oxidation as demonstrated by electrochemical techniques. In this context, current-concentration profiles of the redox peaks show the behavior of the pathways at carbohydrates-based solutions. Herein, the trend of current measured was glucose > sucrose > fructose, attributed to differences in the organic functional groups and chain-structure. Raman, XRD, SEM-EDS and XPS put in clear important structural, morphological, and electronic differences linked with the intrinsic nature of the obtained material. Differential Electrochemical Mass Spectroscopy (DEMS) indicated that the selectivity and the conversion of the formed reaction products during oxidation is linked with the catalyst nature (distribution, particle size) and the interaction with the carbon-based support.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11112023 | PMC |
| http://dx.doi.org/10.3389/fchem.2024.1383443 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Well-Defined PtCo@Pt Core-Shell Nanodendrite Electrocatalyst for Highly Durable Oxygen Reduction Reaction.
Small
January 2025
Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.
The rational design of efficient electrocatalysts with controllable structure and composition is crucial for enhancing the lifetime and cost-effectiveness of oxygen reduction reaction (ORR). PtCo nanocrystals have gained attention due to their exceptional activity, yet suffer from stability issues in acidic media. Herein, an active and highly stable electrocatalyst is developed, namely 3D PtCo@Pt core-shell nanodendrites (NDs), which are formed through the self-assembly of small Pt nanoparticles (≈6 nm).
View Article and Find Full Text PDFMechanistic Insights into the Enhanced Ammonia Oxidation Activity of PtRh Electrodeposits.
ACS Appl Mater Interfaces
January 2025
Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States.
Article Synopsis
- Ammonia is seen as a promising hydrogen carrier due to its efficiency, easier storage, and established infrastructure, allowing for on-demand hydrogen generation via electrochemical ammonia oxidation.
- The study investigates bimetallic PtRh alloy catalysts, which show improved performance in the ammonia oxidation reaction (AOR) compared to standard platinum catalysts, indicating lower energy requirements and better activity.
- X-ray photoelectron spectroscopy reveals that the Rh component modifies the electronic properties of Pt, reducing issues with catalyst poisoning, thereby enhancing the understanding of AOR mechanisms for future catalyst design.
2D Carbon-Anchored Platinum-Based Nanodot Arrays as Efficient Catalysts for Methanol Oxidation Reaction.
Small Methods
December 2024
Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, P. R. China.
Article Synopsis
- Ultrafine Pt-based alloy nanoparticles supported on carbon are promising for catalysis but struggle with stability issues that limit their use.
- A new approach uses nanodot arrays where these nanoparticles are securely implanted in a 2D carbon substrate, leading to high methanol oxidation reaction activity and improved stability.
- This innovative anchoring method optimizes their electronic structure, reduces nanoparticle migration, and prevents transition metal dissolution, paving the way for more durable and effective catalytic materials.
Theoretical investigation of structure and electronic properties in Cisplatin-citrate complexes.
J Comput Chem
January 2025
Center of Excellence in Biocatalyst and Sustainable Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
Cisplatin (CDDP) is an effective Platinum (Pt) based anticancer drug used in chemotherapy. However, its effectiveness is limited due to its instability in solvents, along with the side effects it causes due to DNA damage. Nanoparticles (NPs) were developed in vitro to address these issues by loading CDDP into various types of NPs, including metal, lipid, and biological NPs.
View Article and Find Full Text PDFMultilevel Resistive Switching Dynamics by Controlling Phase and Self-Assembled Nanochannels in HfO.
Small
December 2024
Department of Physics, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Buddha Nagar, Uttar Pradesh, 201314, India.
A resistive switching device with precise control over the formation of conductive filaments (CF) holds immense potential for high-density memory arrays and atomic-scale in-memory computing architectures. While ion migration and electrochemical switching mechanisms are well understood, controlling the evolution of CF remains challenging for practical resistive random-access memory (RRAM) deployment. This study introduces a systematic approach to modulate oxygen vacancies (OV) in HfO films of Ag/HfO/Pt-based RRAM devices by controlling the substrate temperature.
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!