Macroscopic and spectroscopic exploration on the removal performance of titanate nanotubes towards Zn(II)
Linghu, WS; Sun, YX; Yang, H; Chang, KK; Sheng, GD; Hayat, T; Alharbi, NS; Ma, JY
2017
发表期刊JOURNAL OF MOLECULAR LIQUIDS
ISSN0167-7322
卷号244期号:-页码:146-153
文章类型期刊论文
摘要In the present study, titanate nanotubes (denoted as TNTs) synthesized through a simple hydrothermal approach was applied for the decontamination of Zn(II) from aqueous solution. Batch experimental results showed that the removal kinetics process was fast and reached equilibrium after 60 min. The sorption of Zn(II) on TNTs was strongly dependent on pH and ionic strength at pH <6.0, while independent of ionic strength at pH >6.0. Based on Langmuir model fit, the maximum sorption capacity of Zn(II) at pH 5.5 and 293 K was calculated to be 139.44 mg/g, being higher than a series of currently reported adsorbents. TNTs also exhibited a favorable recycling performance for the removal of Zn(II). According to the desorption experiments, surface complexation modeling, X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) analysis, cation exchange and/or outer-sphere surface complexation were the predominant removal mechanisms of Zn(II) at lower pH, while inner-sphere surface complexation and/or precipitation were the main driving forces at higher pH. The experimental findings herein demonstrated the application potentiality of TNTs for the highly efficient treatment of Zn(II)-bearing wastewaters. (C) 2017 Elsevier B.V. All rights reserved.
关键词Aqueous-solution Competitive Adsorption Hydrothermal Method Selective Removal Oxide Composite Ionic-strength High-efficient Zinc Sorption Adsorbent Equilibrium
DOI10.1016/j.molliq.2017.08.126
关键词[WOS]AQUEOUS-SOLUTION ; COMPETITIVE ADSORPTION ; HYDROTHERMAL METHOD ; SELECTIVE REMOVAL ; OXIDE COMPOSITE ; IONIC-STRENGTH ; HIGH-EFFICIENT ; ZINC SORPTION ; ADSORBENT ; EQUILIBRIUM
收录类别SCI
语种英语
WOS记录号WOS:000413391000018
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28722
专题中科院上海应用物理研究所2011-2018年
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Linghu, WS,Sun, YX,Yang, H,et al. Macroscopic and spectroscopic exploration on the removal performance of titanate nanotubes towards Zn(II)[J]. JOURNAL OF MOLECULAR LIQUIDS,2017,244(-):146-153.
APA Linghu, WS.,Sun, YX.,Yang, H.,Chang, KK.,Sheng, GD.,...&Ma, JY.(2017).Macroscopic and spectroscopic exploration on the removal performance of titanate nanotubes towards Zn(II).JOURNAL OF MOLECULAR LIQUIDS,244(-),146-153.
MLA Linghu, WS,et al."Macroscopic and spectroscopic exploration on the removal performance of titanate nanotubes towards Zn(II)".JOURNAL OF MOLECULAR LIQUIDS 244.-(2017):146-153.
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