Silane-modified halloysite/Fe3O4 nanocomposites: Simultaneous removal of Cr(VI) and Sb(V) and positive effects of Cr(VI) on Sb(V) adsorption

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	Silane-modified halloysite/Fe3O4 nanocomposites: Simultaneous removal of Cr(VI) and Sb(V) and positive effects of Cr(VI) on Sb(V) adsorption
	Zhu, KC (Zhu, Kecheng); Duan, YY (Duan, Yanyan); Wang, F (Wang, Fu); Gao, P (Gao, Pin); Jia, HZ (Jia, Hanzhong); Ma, CY (Ma, Chengyu); Wang, CY (Wang, Chuanyi)
刊名	CHEMICAL ENGINEERING JOURNAL
	2017
卷号	311 期号:3 页码:236-246
关键词	Halloysite nanotubes Fe3O4 Cr(VI) Sb(V) Adsorption
通讯作者	Jia, HZ ; Wang, CY
英文摘要	New adsorbents were successfully prepared by in-situ growing Fe3O4 nanoparticles on halloysite nanotubes (HNTs) followed by subsequent modification with silane coupling agents. The as-prepared composites were characterized by TEM, XRD, TGA, ATR-FTIR, BET, and Zeta potential. The results confirm that Fe3O4 nanoparticles were successfully decorated on internal nanotube surfaces and silane coupling agents were grafted onto the external surfaces. Among the four types of silane coupling agents modified HNTs/Fe3O4, anilino-methyl-triethoxysilane (KH-42) modified HNTs/Fe3O4 composite exhibits the highest capacity for single adsorption of Cr(VI) and simultaneously adsorption of Cr(VI) and Sb(V). Moreover, the maximum Sb(V) removal efficiency increases from 67.0% in the single-solute system to 98.9% in the bi-solute system, suggesting that the presence of Cr(VI) enhances the Sb(V) removal by m-HNTs/Fe3O4. ATR-FTIR and XPS results reveal the existence of N-O-Cr bonds on adsorbent surfaces in the corresponding single-solute system, while Cr-O-Sb binding forms in the bi-solute system, which is responsible for the synergistic promoting effect on simultaneous adsorption of Cr(VI) and Sb(V) by m-HNTs/Fe3O4. The present work evinces that m-HNTs/Fe3O4 holds the potential in treating industrial wastewater and natrual surface water with coexisting heavy metals such as Cr(VI) and Sb(V).
收录类别	SCI
WOS记录号	WOS:000392768200027
内容类型	期刊论文
源URL	[http://ir.xjipc.cas.cn/handle/365002/4727]
专题	新疆理化技术研究所_环境科学与技术研究室
作者单位	1.Chinese Acad Sci, Lab Environm Sci & Technol, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China 2.Donghua Univ, Sch Environm Sci & Engn, Shanghai 201620, Peoples R China
推荐引用方式 GB/T 7714	Zhu, KC ,Duan, YY ,Wang, F ,et al. Silane-modified halloysite/Fe3O4 nanocomposites: Simultaneous removal of Cr(VI) and Sb(V) and positive effects of Cr(VI) on Sb(V) adsorption[J]. CHEMICAL ENGINEERING JOURNAL,2017,311(3):236-246.
APA	Zhu, KC .,Duan, YY .,Wang, F .,Gao, P .,Jia, HZ .,...&Wang, CY .(2017).Silane-modified halloysite/Fe3O4 nanocomposites: Simultaneous removal of Cr(VI) and Sb(V) and positive effects of Cr(VI) on Sb(V) adsorption.CHEMICAL ENGINEERING JOURNAL,311(3),236-246.
MLA	Zhu, KC ,et al."Silane-modified halloysite/Fe3O4 nanocomposites: Simultaneous removal of Cr(VI) and Sb(V) and positive effects of Cr(VI) on Sb(V) adsorption".CHEMICAL ENGINEERING JOURNAL 311.3(2017):236-246.