Imperial College London
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DrThomasMacdonald

Faculty of Natural Sciences, Department of Chemistry

Visiting Reseacher
 
 
 
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t.macdonald

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{du:2017:10.1039/c6ra27173a,
author = {du, Toit H and Macdonald, TJ and Huang, H and Parkin, IP and Gavriilidis, A},
doi = {10.1039/c6ra27173a},
journal = {RSC Advances: an international journal to further the chemical sciences},
pages = {9632--9638},
title = {Continuous flow synthesis of citrate capped gold nanoparticles using UV induced nucleation},
url = {http://dx.doi.org/10.1039/c6ra27173a},
volume = {7},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A new approach for synthesising gold nanoparticles of controlled size in the presence of trisodium citrate is presented. UV light is employed as a photoinitiator for the reduction of Au(III) by citrate. The UV induced nucleation takes place in a glass capillary tube (0.8 mm internal diameter) illuminated by a series of germicidal UVC lamps. This has been coupled sequentially with a heated coil to accelerate growth. In this way the processes of nucleation and growth are effectively separated. Slug flow is utilised in order to avoid tube fouling using heptane as segmenting fluid. Increasing UV intensity and temperature of the growth section lead to decrease of nanoparticle size, whilst varying UV exposure time results in a nonmonotonic effect on particle size. By varying UV intensity from 0 to 1461 mW cm−2 at a contant exposure time of 10 s, and a constant growth time of 20 min, the nanoparticles obtained range in size from 9.5 ± 1.3 nm to 36.1 ± 6.9 nm at a low growth temperature of 60 °C, and 6.6 ± 0.8 nm to 14.2 ± 6.4 nm at a high growth temperature of 100 °C.
AU  - du,Toit H
AU  - Macdonald,TJ
AU  - Huang,H
AU  - Parkin,IP
AU  - Gavriilidis,A
DO  - 10.1039/c6ra27173a
EP  - 9638
PY  - 2017///
SN  - 2046-2069
SP  - 9632
TI  - Continuous flow synthesis of citrate capped gold nanoparticles using UV induced nucleation
T2  - RSC Advances: an international journal to further the chemical sciences
UR  - http://dx.doi.org/10.1039/c6ra27173a
UR  - https://pubs.rsc.org/en/content/articlelanding/2017/RA/C6RA27173A#!divAbstract
UR  - http://hdl.handle.net/10044/1/78590
VL  - 7
ER  -
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