Green and Effective Removal of Aqueous Graphene Oxide under UV-Light Irradiation

Nanomaterials
Xiaoya YuanXue Wu

Abstract

The potential extensive application of graphene oxide (GO) in various fields results in the possibility of its release into the natural environment with negative impacts on humans and the ecosystem. The UV-induced removal behavior of aqueous GO was evaluated in this study, and the effect of various parameters (including initial GO concentration, initial solution pH and co-existing ions) on removal rate of GO were investigated in detail. The results showed that UV-light induced a maximum removal rate of GO of 99.1% after 32 h irradiation without any additives, and that the photo-induced removal process in all cases fitted well with pseudo-first-order kinetics. Under optimal conditions, GO was completely removed, with initial GO concentrations of 10 mg/L while adjusting solution pH to 3 or adding Ca2+-containing salt. The GO and photoreduced graphene oxide (prGO) were characterized using High-resolution Transmission Microscopy (HRTEM), X-ray Photoelectron Spectroscopy (XPS), and Fourier-transform Infrared Spectroscopy (FT-IR). The radical species trapping experiments and Electron Spin Resonance (ESR) tests indicated that self-reduction of GO upon UV-light exposure could be achieved via photogenerated electrons from a GO semicondu...Continue Reading

References

Oct 20, 2007·Nano Letters·Scott GiljeRichard B Kaner
Dec 1, 2010·ACS Applied Materials & Interfaces·Yasumichi MatsumotoShintaro Ida
Jun 10, 2011·ACS Applied Materials & Interfaces·Ken-Hsuan LiaoChristy L Haynes
Nov 2, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Chih-Jen ShihDaniel Blankschtein
Oct 5, 2013·Nature Communications·Régis Y N GenglerR J Dwayne Miller
Nov 21, 2013·Current Medicinal Chemistry·Xianfeng Zhou, Feng Liang
Jan 11, 2014·Journal of Colloid and Interface Science·Natkritta BoonprakobBurapat Inceesungvorn
Dec 3, 2014·Journal of Colloid and Interface Science·Hsun-Wei Cho, Jih-Jen Wu
Feb 24, 2015·Nanotoxicology·Yuming ChenQixing Zhou
Mar 27, 2015·Chemical Society Reviews·François PerreaultMenachem Elimelech
Aug 19, 2015·Environmental Science & Technology·Indranil ChowdhuryDermont Bouchard
Dec 8, 2015·Journal of Hazardous Materials·Marta DziewięckaMaria A Augustyniak-Jabłokow
Mar 8, 2016·Chemosphere·Jingru XieSheng-Tao Yang
Jul 12, 2016·ACS Nano·Shreya H DaveJeffrey C Grossman
Apr 23, 2017·Journal of Hazardous Materials·Yang GaoChanglun Chen

❮ Previous
Next ❯

Methods Mentioned

BETA
X-ray
transmission electron microscopy
ESR

Related Concepts

Related Feeds

Blood Clotting Disorders

Thrombophilia includes conditions with increased tendency for excessive blood clotting. Blood clotting occurs when the body has insufficient amounts of specialized proteins that make blood clot and stop bleeding. Here is the latest research on blood clotting disorders.