TY - JOUR
T1 - Nanocomposites of graphene oxide-hydrated zirconium oxide for simultaneous removal of As(III) and As(V) from water
AU - Luo, Xubiao
AU - Wang, Chengcheng
AU - Wang, Lichuan
AU - Deng, Fang
AU - Luo, Shenglian
AU - Tu, Xinman
AU - AU, Chak Tong
N1 - Funding Information:
This work was financially supported by Natural Science Foundation of China (50978132, 51178213, 51238002, 51272099, 51008149, 51266011), Program for New Century Excellent Talents in University (NCET-11-1004), Cultivating Program for Young Scientists of Jiangxi Province of China (20112BCB23016), National High Technology Research and Development Program of China (2009AA062905, 2011AA060604), Natural Science Foundation of Jiangxi Province (20122BAB213014, 20114BAB203018) and Department of Education Fund of Jiangxi Province (Grant GJJ11508).
PY - 2013/3/5
Y1 - 2013/3/5
N2 - Hydrated zirconium oxide (ZrO(OH) 2 nanoparticles were modified with graphite oxide (GO) (denoted herein as GO-ZrO(OH) 2 by hydro-thermal co-precipitation reaction, and were used for the simultaneous removal of As(III) and As(V) from drinking water. The GO-ZrO(OH) 2 nanocomposites were characterized using Fourier transformer infrared spectroscopy, X-ray diffraction analysis, high resolution transmission electron microscopy, Zeta-potential, and specific surface area analysis. The size of ZrO(OH) 2 particles in GO-ZrO(OH) 2 is below 5nm, and the specific surface area of GO-ZrO(OH) 2 is about 4 times that of ZrO(OH) 2 nanoparticles. The GO-ZrO(OH) 2 nanocomposites showed high adsorption capacity in a wide pH range, and the monolayer adsorption amounts calculated based on the Langmuir adsorption model were 95.15 and 84.89mg/g for As(III) and As(V), respectively, which are 3.54 and 4.64 times that of ZrO(OH) 2 nanoparticles. The high adsorption capacity is attributed to good dispersion of ZrO(OH) 2 nanoparticles in the GO substrate. The GO-ZrO(OH) 2 nanocomposites can simultaneously remove As(III) and As(V) in water. Moreover, GO-ZrO(OH) 2 showed good anti-interference ability to co-existing anions, and exhibited excellent recyclability. The experimental results suggest that GO-ZrO(OH) 2 is a promising adsorbent for the removal of arsenic from drinking water.
AB - Hydrated zirconium oxide (ZrO(OH) 2 nanoparticles were modified with graphite oxide (GO) (denoted herein as GO-ZrO(OH) 2 by hydro-thermal co-precipitation reaction, and were used for the simultaneous removal of As(III) and As(V) from drinking water. The GO-ZrO(OH) 2 nanocomposites were characterized using Fourier transformer infrared spectroscopy, X-ray diffraction analysis, high resolution transmission electron microscopy, Zeta-potential, and specific surface area analysis. The size of ZrO(OH) 2 particles in GO-ZrO(OH) 2 is below 5nm, and the specific surface area of GO-ZrO(OH) 2 is about 4 times that of ZrO(OH) 2 nanoparticles. The GO-ZrO(OH) 2 nanocomposites showed high adsorption capacity in a wide pH range, and the monolayer adsorption amounts calculated based on the Langmuir adsorption model were 95.15 and 84.89mg/g for As(III) and As(V), respectively, which are 3.54 and 4.64 times that of ZrO(OH) 2 nanoparticles. The high adsorption capacity is attributed to good dispersion of ZrO(OH) 2 nanoparticles in the GO substrate. The GO-ZrO(OH) 2 nanocomposites can simultaneously remove As(III) and As(V) in water. Moreover, GO-ZrO(OH) 2 showed good anti-interference ability to co-existing anions, and exhibited excellent recyclability. The experimental results suggest that GO-ZrO(OH) 2 is a promising adsorbent for the removal of arsenic from drinking water.
KW - Adsorption
KW - Arsenic removal
KW - Graphite oxide
KW - Nanocomposite
KW - ZrO(OH)2
UR - http://www.scopus.com/inward/record.url?scp=84873924542&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2013.01.017
DO - 10.1016/j.cej.2013.01.017
M3 - Journal article
AN - SCOPUS:84873924542
SN - 1385-8947
VL - 220
SP - 98
EP - 106
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -