The field of nanomaterials has been expanding rapidly into many diverse applications within the last 20 years. With this growth, there is a significant need for new method development for the detection and characterization of nanomaterials. Understanding the physical properties of nanoscale entities and their associated reaction kinetics is crucial for monitoring their effect on environmental and human health, and in their use for practical applications. Nano-impact electrochemistry is a novel development in the field of fundamental electrochemistry that provides an ultrasensitive method for analyzing physical and redox properties of nanomaterials and their derivatives. This protocol focuses on the tools required for characterizing silver nanoparticles (AgNPs) by nano-impact electrochemistry, the preparation of microelectrodes and the methodology needed for measurement of the AgNP redox activity. The fabrication of cylindrical carbon fiber as well as gold and platinum microwire electrodes is described in detail. The analysis of nano-impact electrochemistry for the characterization of redox active entities is also outlined with examples of applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/978-1-0716-0319-2_24 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nano-Impact Electrochemical Biosensing Based on a CRISPR-Responsive DNA Hydrogel.
Nano Lett
December 2023
University of Science and Technology of China, Hefei 230026, China.
Nano-impact electrochemistry (NIE) enables simple, rapid, and high-throughput biocoupling and biomolecular recognition. However, the low effective collision frequency limits the sensitivity. In this study, we propose a novel NIE sensing strategy amplified by the CRISPR-responsive DNA hydrogel and cascade DNA assembly.
View Article and Find Full Text PDFNano-Impact Electrochemistry Reveals Kinetics Information of Metal-Ion Battery Materials with Multiple Redox Centers.
Angew Chem Int Ed Engl
October 2023
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Institute of Chemical Biology and Nanomedicine, Hunan University, China.
Prussian blue (PB) has emerged as a promising cathode material in aqueous batteries. It possesses two distinct redox centers, and the potassium ions (K ) are unevenly distributed throughout the compound, adding complexity to the interpretation of the K insertion/de-insertion kinetic mechanism. Traditional ensemble-averaged measurements are limited in uncovering the precise kinetic information of the PB particles, as the results are influenced by the construction of the porous composite electrode and the redox behavior from different particles.
View Article and Find Full Text PDFNano-Impact Single-Entity Electrochemistry Enables Plasmon-Enhanced Electrocatalysis.
Angew Chem Int Ed Engl
June 2023
Department of Chemistry-Ångström, Uppsala University, 75120, Uppsala, Sweden.
Article Synopsis
- Plasmon-enhanced electrocatalysis (PEEC) improves energy conversion by combining plasmon resonance with electrochemical bias, outperforming traditional methods.
- The study employs nano-impact single-entity electrochemistry (SEE) to analyze plasmonic catalysts like gold nanoparticles during glucose oxidation and oxygen reduction at the single-particle level.
- Results indicate that conventional ensemble measurements show minimal plasmonic effects on photocurrents, primarily due to fast neutralization of hot carriers, while SEE allows these effects to dominate, enhancing photocurrent generation.
Clinically Applicable Homogeneous Assay for Serological Diagnosis of Alpha-Fetoprotein by Impact Electrochemistry.
ACS Sens
October 2022
Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha410082, P. R. China.
Tumor protein quantification with high specificity, sensitivity, and efficiency is of great significance to enable early diagnosis and effective treatment. The existing methods for protein analysis usually suffer from high cost, time-consuming operation, and insufficient sensitivity, making them not clinically friendly. In this work, a label-free homogeneous sensor based on the nano-impact electroanalytic (NIE) technique was proposed for the detection of tumor protein marker alpha-fetoprotein (AFP).
View Article and Find Full Text PDFFrom Ensemble Electrochemistry to Nano-Impact Electrochemistry: Altered Reaction Selectivity.
Angew Chem Int Ed Engl
September 2022
Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
Selective electrochemical production of valued chemicals is of significant importance but remains a great challenge in chemistry. Conventional approaches for enhancing reaction selectivity focus on the improvement of the catalysts themselves. In this work, we systematically studied the reaction kinetics and mass transport behavior of LaNiO nanocubes (LaNiO NCs) catalyzed hydrogen peroxide reduction reaction (HPRR) at ensemble and single nanoparticle levels using nano-impact electrochemistry (NIE).
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!