Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14966
Title: Synthesis and characterization of metal sulfide and oxide nanoparticles from molecular precursors
Authors: ZHANG ZHIHUA
Keywords: nanocrystals, semiconductor, molecular precursor, amine-assisted, metal sulfides, metal oxides.
Issue Date: 31-Oct-2005
Source: ZHANG ZHIHUA (2005-10-31). Synthesis and characterization of metal sulfide and oxide nanoparticles from molecular precursors. ScholarBank@NUS Repository.
Abstract: This thesis is aimed to explore the feasibility and suitability of thiocarboxylate and carboxylate complexes as precursors to produce metal sulfide and oxide nanoparticles. Monodispersed CdS nanoparticles with controllable sizes were prepared by refluxing the precursor in aqueous media, and the growth kinetics was studies. For the first time, we present a simple method to produce metal sulfides from molecular precursors at room temperature and ambient conditions. The mechanism of the reaction was investigated with FTIR and NMR analysis and DFT calculations. In addition, shape-controlled synthesis of PbS nanocrystals have been demonstrated by interplaying simple chemistry of the surface capping reagents. Based on the amine-assisted mechanism, a simple and general non-hydrolytic approach has been developed to prepare metal oxide nanocrystals. Commercially available metal acetates can be readily used to produce the corresponding oxides in hot alkylamines media. The morphologies and composition of the as-obtained nanocrystals can be readily tuned by changing the experimental conditions.
URI: http://scholarbank.nus.edu.sg/handle/10635/14966
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
01-Title, Acknowledgement, TOC, Summary, LOT,LOF.pdf142.93 kBAdobe PDF

OPEN

NoneView/Download
02-Chapter 1.pdf204.29 kBAdobe PDF

OPEN

NoneView/Download
03-Chapter 2.pdf140.33 kBAdobe PDF

OPEN

NoneView/Download
04-Chapter 3.pdf727.88 kBAdobe PDF

OPEN

NoneView/Download
05-Chapter 4.pdf1.45 MBAdobe PDF

OPEN

NoneView/Download
06-Chapter 5.pdf1.51 MBAdobe PDF

OPEN

NoneView/Download
07-Chapter 6.pdf1.8 MBAdobe PDF

OPEN

NoneView/Download
08-Chapter 7.pdf28.43 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

546
checked on Dec 11, 2017

Download(s)

2,677
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.