Related Experiment Video
Updated: Dec 25, 2025

Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
Published on: May 23, 2025
Stable and active Pt colloid preparation by modified citrate reduction and a mechanism analysis of inorganic
Yuexia Li1, Zhiyi Zhang1, Zhuojie Xiao2
1Research Center for Engineering Technology of Polymeric Composites of Shanxi Province, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
Abstract:
Ultra-small and monodispersed Pt nanoparticles (NPs) have been successfully synthesized in polymer electrolyte membrane fuel cells. The process normally involves the use of capping agents, organic species, templates, and substrates and is thus complex. Hence, obtaining Pt NPs with a clean surface is challenging. In this study, a method for preparing stable and highly dispersed Pt NPs with clean surfaces is proposed. The method involves the use of a modified Na3C6H5O7 reduction process assisted by NaNO3 stabilization. The specific complexations of NO2- ions possibly alter the reaction kinetics and lower the growth rate of Pt NPs by retarding the reduction reaction. The optimized Pt/carbon nanotube (CNT) catalysts exhibit high mass activity and moderate activity decay after 10,000 times of potential cycling compared with commercially available Pt/C catalysts. Then, membrane electrode assemblies based on the resultant catalysts are characterized. The cell performance of 744 mW cm-2 (maximum power density) is achieved after the optimized Pt/CNT catalysts are used in carbon black.
Related Concept Videos
Colloidal precipitates
Coagulation
EDTA: Auxiliary Complexing Reagents
Colloids and Suspensions
Colloids
Controlled-Current Coulometry: Overview

