TY - JOUR
T1 - Photoreduction of graphene oxide enhanced by sacrificial agents
AU - Cho, Hsun Wei
AU - Wu, Jih Jen
N1 - Funding Information:
We thank Professor Lien-Chung Hsu for the technical support. Financial support from the Ministry of Science Technology in Taiwan under Contract No. NSC 100-2628-E006-032-MY2 and NSC 102-2221-E-006-215-MY3 is gratefully acknowledged.
Publisher Copyright:
© 2014 Elsevier Inc.
PY - 2015/1/5
Y1 - 2015/1/5
N2 - In this work, the photoreduction of graphene oxides (GOs) was carried out in the presence of a sacrificial agent of Na2S/Na2SO3 and triethanolamine (TEA) separately in the solution. The photoreduction of GOs was enhanced with the addition of the sacrificial agent, which was examined in terms of reduction extent and needed reduction period. The quench of the GO emission was observed in the photoluminescence spectra of both GO solutions with Na2S/Na2SO3 and TEA. Although both sacrificial agents facilitated the charge transfer in the irradiated GO solutions, the aggregation of GO/reduced GO (RGO) occurred in the Na2S/Na2SO3-contained solution during photoreduction, which limited further photoreduction of GOs with the assistance of Na2S/Na2SO3. By keeping good dispersion characteristic during the whole process, the photoreduction efficiency of GO in the presence of TEA was therefore superior to that with the assistance of Na2S/Na2SO3.
AB - In this work, the photoreduction of graphene oxides (GOs) was carried out in the presence of a sacrificial agent of Na2S/Na2SO3 and triethanolamine (TEA) separately in the solution. The photoreduction of GOs was enhanced with the addition of the sacrificial agent, which was examined in terms of reduction extent and needed reduction period. The quench of the GO emission was observed in the photoluminescence spectra of both GO solutions with Na2S/Na2SO3 and TEA. Although both sacrificial agents facilitated the charge transfer in the irradiated GO solutions, the aggregation of GO/reduced GO (RGO) occurred in the Na2S/Na2SO3-contained solution during photoreduction, which limited further photoreduction of GOs with the assistance of Na2S/Na2SO3. By keeping good dispersion characteristic during the whole process, the photoreduction efficiency of GO in the presence of TEA was therefore superior to that with the assistance of Na2S/Na2SO3.
UR - http://www.scopus.com/inward/record.url?scp=84910031364&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84910031364&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2014.10.006
DO - 10.1016/j.jcis.2014.10.006
M3 - Article
AN - SCOPUS:84910031364
SN - 0021-9797
VL - 438
SP - 291
EP - 295
JO - Journal of Colloid And Interface Science
JF - Journal of Colloid And Interface Science
ER -