Rapid synthesis of supported single metal nanoparticles and effective removal of stabilizing ligands

Abstract

A method is introduced to rapidly (<30 min) synthesize single metal nanoparticles with narrow size distribution in a simple way. It is based on the electrospraying of a metal precursor...

An experimental perspective on nanoparticle electrochemistry

“…Some strategies involve controlled thermal treatments under oxidizing and/or reducing atmospheres, 22 UV light, 23 washing treatments with specific solvents, 24 and plasma treatments. 25,26 A thorough characterization after treatment is required to know if significant changes occurred during the process.…”

Surfactant-free synthesis of metal and metal oxide nanomaterials: a perspective

“…33 On the other hand, aer the preparation of NPs using surfactants, they should be removed by applying additional processes such as ozone, heat, chemical, and electrochemical treatments, leading to the need for more steps in the synthesis of nanomaterials and reducing the repeatability of the production process in addition to increasing the cost and reducing the chance of up-scalability. 34,35 Thus, there is a vital need for designing simple and reproducible surfactant-free techniques with up-scalable potential for the synthesis of nanomaterials. 20,36,37 Several surfactant-free techniques such as laser, polyol, mono-alcohol, plasma, and microwave synthesis techniques have been introduced to avoid the utilization of toxic additives or surfactants, paving a way for reducing the complexity and enhancing the eco-friendliness (Table 1).…”

Plasma-Enabled Ligand Removal for Improved Catalysis: Furfural Conversion on Pd/SiO2

“…NTP can replace conventional calcination, avoiding thermal effects, , and remove templates from SBA-15 and ZSM-5 zeolites. NTP removal of organic ligands in nanoparticle synthesis is less investigated and has only been studied under vacuum. − Ligand removal from Au and Ag nanoparticles by NTPs − led to a slight increase in particle size and increased activity in oxygen reduction reaction (ORR), epoxidation of propylene, , and hydrogenation of acetylene . Nonthermal atmospheric plasma (NTAP) has not been demonstrated for ligand removal from nanoparticle catalysts.…”