Open AccessMechanism of Bi−Ni Phase Formation in a Microwave‐Assisted Polyol Process
Author(s) -
Smuda Matthias,
Damm Christine,
Ruck Michael,
Doert Thomas
Publication year - 2020
Publication title -
chemistryopen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 29
ISSN - 2191-1363
DOI - 10.1002/open.202000300
Subject(s) - intermetallic , particle (ecology) , materials science , nanoparticle , chemical engineering , polyol , nanotechnology , metallurgy , composite material , geology , oceanography , alloy , engineering , polyurethane
Abstract Invited for this month's cover is the group of Michael Ruck and Thomas Doert at the Technische Universität Dresden (Germany). The cover picture shows the transformation of a Bi‐Ni core‐shell particle into a homogenous intermetallic BiNi particle. To understand the mechanism for the BiNi formation in the polyol process, various methods such as X‐ray and electron diffraction, HR‐TEM, mass spectrometry and FT‐IR spectroscopy were employed. In a microwave‐assisted one‐pot synthesis at first Bi‐particles emerge by reduction of a Bi‐salt. The reduction of the Ni‐salt most likely occurs on the surface of these particles, followed by a complete encasement of the Bi‐core (blue) with a shell of Ni‐particles (green). As the reaction continues, the Ni‐atoms diffuse into the Bi‐core until the homogeneous BiNi particle is attained. Read the full text of their Full Paper at 10.1002/open.202000236.