Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method
文献类型：期刊论文
| 作者 | Niu, H. Y. ; Wang, J. M. ; Shi, Y. L. ; Cai, Y. Q. ; Wei, F. S. |
| 刊名 | MICROPOROUS AND MESOPOROUS MATERIALS
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 122期号:1页码:28-35 |
| 关键词 | Titanate nanotubes Nanosized titania particles Arsenate Arsenite Adsorption |
| 中文摘要 | A mesoporous material, titanate nanotubes (TNs) with different surface areas (197-312 m(2) g(-1)) and pore size diameters (2-6 nm) was synthesized by alkaline hydrothermal method. Their adsorption abilities to arsenic, the notoriously poisonous inorganic contaminant in groundwater were evaluated. Batch experiments showed that the adsorption of arsenate [As (V)] was more favored in acid solution, while the uptake of arsenite [As (III)] was preferred in alkaline solution. The maximum uptake of As (V) and As (III) calculated by Langmuir equation was 208 mg g(-1) (pH 3.0) and 60 mg g(-1) (pH 7.0) respectively achieved on TN (180-1) adsorbent (312 m(2) g(-1), internal diameter, 5 nm), which was 33 and 10 times greater than those of nanosized titania particles (40-50 nm, 15 mg g(-1)). Silicate anions, phosphate and sulfate had little effect on arsenic adsorption onto TNs. In several real water samples, TNs still showed high uptake efficiency to arsenic at pH 7.0. More than 80% of As (III) and 95% of As (V) adsorbed on TNs could be desorbed with 1.0 M NaOH solution within 1 h. Comparison study indicated that all the tubular titanate materials exhibited great adsorption capacity to arsenic regardless their surface areas, Since the equipment required for TNs synthesis is simple and cheap, and alkali Solutions are reusable, TNs can be regarded as an efficient, low-cost adsorbent for the removal of arsenic. (C) 2009 Elsevier Inc. All rights reserved. |
| WOS记录号 | WOS:000266061500005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21450]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Niu, H. Y.,Wang, J. M.,Shi, Y. L.,et al. Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2009,122(1):28-35. |
| APA | Niu, H. Y.,Wang, J. M.,Shi, Y. L.,Cai, Y. Q.,&Wei, F. S..(2009).Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method.MICROPOROUS AND MESOPOROUS MATERIALS,122(1),28-35. |
| MLA | Niu, H. Y.,et al."Adsorption behavior of arsenic onto protonated titanate nanotubes prepared via hydrothermal method".MICROPOROUS AND MESOPOROUS MATERIALS 122.1(2009):28-35. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。