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New Insight into GO, Cadmium(II), Phosphate Interaction and Its Role in GO Colloidal Behavior
Ren, XM; Wu QY(吴群燕); Wu, QY; Xu, H; Shao, DD; Tan, XL; Shi, WQ; Chen, CL; Li, JX; Chai, ZF; Hayat, T; Wang, XK; Shi WQ(石伟群); Chai ZF(柴之芳)
2016
发表期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷号50期号:17页码:9361-9369
通讯作者石伟群
文章类型Article
摘要This study establishes the relationship between the graphene oxide (GO) colloidal behavior and the co-adsorption of Cd(II) and phosphate (P(V)) on GO. Results reveal that the interactions among GO, Cd(II), and P(V) exhibit a significant dependence on solution chemistry and addition sequences and that these interactions subsequently affect the GO colloidal behavior. The GO aggregation is pH-dependent at pH < 4.0 and depends apparently on the binding ability of Cd(II) to GO at pH > 4.0. When the components were added simultaneously, the presence of P(V) enhances the GO binding capacity toward Cd(II), confirmed by theoretical calculation, resulting in the greater destabilizing influence of Cd(II) + P(V) on GO than Cd(II) at pH 3.0-9.5, while the formation of Cd-3(PO4)(2) precipitate leads to a lower destabilizing influence of Cd(II) + P(V) on GO than Cd(II) at pH > 9.5. Both pH and addition sequence affect the destabilizing ability of Cd(II) + P(V). These new insights are expected to provide valuable information not only for the application of GO as a potential adsorbent in multicomponent systems for heavy metal ion and oxyanion co-removal but also for the fate and risk assessment of GO after serving as heavy metal ion and oxyanion carrier.
DOI10.1021/acs.est.6b02934
关键词[WOS]GRAPHENE OXIDE NANOSHEETS ; NATURAL ORGANIC-MATTER ; AQUEOUS-SOLUTIONS ; ENVIRONMENTAL APPLICATIONS ; FUNCTIONALIZED GRAPHENE ; SURFACE COMPLEXATION ; AGGREGATION KINETICS ; IONIC-STRENGTH ; HUMIC-ACID ; ADSORPTION
语种英语
WOS记录号WOS:000382805800050
引用统计
被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/261066
专题院士
多学科研究中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Ren, XM,Wu QY,Wu, QY,et al. New Insight into GO, Cadmium(II), Phosphate Interaction and Its Role in GO Colloidal Behavior[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2016,50(17):9361-9369.
APA Ren, XM.,吴群燕.,Wu, QY.,Xu, H.,Shao, DD.,...&柴之芳.(2016).New Insight into GO, Cadmium(II), Phosphate Interaction and Its Role in GO Colloidal Behavior.ENVIRONMENTAL SCIENCE & TECHNOLOGY,50(17),9361-9369.
MLA Ren, XM,et al."New Insight into GO, Cadmium(II), Phosphate Interaction and Its Role in GO Colloidal Behavior".ENVIRONMENTAL SCIENCE & TECHNOLOGY 50.17(2016):9361-9369.
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