10-Lecture 10 - Liquid phase synthesis: Oxide nanoparticles/ClipID:16364 previous clip next clip

Recording date 2020-07-03

Language

English

Organisational Unit

Professur für Nanostructured Particles

Producer

Professur für Nanostructured Particles

Format

lecture

Content and timings:

0:10 - Welcome, reminder to vote for your student representatives and exam information (MAP and non-MAP, non-nano students)
02:50 - Introduction to today's topic
04:50 - Titanium dioxide nanoparticles - applications and synthetic routes
19:07 - Applications of other metal oxide nanoparticles
23:30 - A simplified view of the liquid phase synthesis of metal oxides
27:43 - Sol-gel process: Introduction
36:48 - Sol-gel process: Precursors and solvents
38:52 - Sol-gel process: Precursor hydrolysis
42:18 - Sol-gel process: Condensation 
47:05 - Sol-gel process: Gel formation and drying (xerogels and aerogels)
55:45 - Sol-gel process: Calcination
59:50 - Sol-gel process: Stöber method for the synthesis of monodisperse silica (and with modifications, doped and mesoporous silica)
1:11:25 - Commercially produced colloidal silica
1:14:08 - Forced hydrolysis: basic thermodynamic considerations, Pourbaix diagrams and hydrolysis and condensation of solvated metal ions
1:21:15 - Forced hydrolysis by raising pH (example for the Massart method to produce magnetite)
1:26:00 - Forced hydrolysis by raising temperature (with example from E.Matijevic for the precipitation of iron salts at 100°C)
1:30:00 - Forced hydrolysis by controlled release of ions (with example of the synthesis and calcination of europium doped yttrium hydroxycarbonate)

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