期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 1, 期 11, 页码 3789-3796出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta01616a
关键词
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资金
- NSF Research Experience for Teachers (RET) program (NSF) [1130006]
- NSF I-Corps program (NSF) [1311794]
- Department of Science and Technology - Engineering Research and Development for Technology (DOST-ERDT) program at the University of the Philippines
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [1311794] Funding Source: National Science Foundation
Poly(N-vinylcarbazole) (PVK) was blended with graphene oxide (GO) to form a PVK-GO polymer nanocomposite capable of adsorbing heavy metal from aqueous solutions. The homogenous distribution of GO in the PVK-GO nanocomposite was determined by X-ray photoelectron microscopy (XPS) and attenuated total reflectance -infrared spectroscopy (ATR-IR). The results show that the adsorption capacity of Pb2+ by the nanocomposite increased with increasing amount of GO. This phenomenon was attributed to the increasing concentration of oxygen-containing functional groups available in the nanocomposite. Furthermore, the adsorption of Pb2+ onto PVK-GO nanocomposite was influenced by pH changes. Higher pHs had a better adsorption capacity than lower pHs, due to changes in the nanocomposite surface properties. The highest adsorption capacity of the PVK-GO nanocomposite for Pb2+ was 887.98 mg g(-1) and fits well the Langmuir model. This adsorption capacity was achieved using a 10 : 90 wt% ratio of PVK : GO at pH 7 +/- 0.5 with a 90 min contact time. The high removal efficiency of this nanocomposite suggests that PVK-GO is effective and can be applied to remove heavy metals from water.
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