抄録
Simultaneous adsorption of Sr 2+ and ReO 4 − , which are surrogates of 90 Sr 2+ and 99m TcO 4 − , on hexadecyl pyridinium (HDPy + )-modified montmorillonite (HDPy/Mt) was investigated. When the amount of HDPy + corresponding to 0.92 times the cation exchange capacity (CEC) of Mt was added, the obtained composite (HDPy/Mt–0.92) showed considerable adsorption capacities for Sr 2+ and ReO 4 − . Some HDPy + desorbed from the Mt layer in the presence of ReO 4 − , providing negatively charged sites on the Mt surface for Sr 2+ adsorption. The desorbed HDPy + interacted with ReO 4 − and was trapped in the composite in the form of HDPy–ReO 4 , resulting in adsorption of ReO 4 − . At high initial concentrations of ReO 4 − , the HDPy configuration changed after adsorption because of the desorption–adsorption process, which was supported by X-ray diffraction. Based on the results of X-ray photoelectron spectroscopy, in the binary system (i.e., Sr 2+ and ReO 4 − ), Sr 2+ uptake occurred in the interlayer space, while adsorption of ReO 4 − occurred on the external surface and probably in the interlayer space. Desorption–adsorption and ion exchange account for Sr 2+ uptake, while adsorption of ReO 4 − was mainly attributed to desorption–adsorption. Compared with the one-adsorbate system, a synergistic effect of simultaneous adsorption of Sr 2+ and ReO 4 − was found in the two-adsorbate system.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 431-439 |
| ページ数 | 9 |
| ジャーナル | Applied Surface Science |
| 巻 | 394 |
| DOI | |
| 出版物ステータス | 出版済み - 2 1 2017 |
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All Science Journal Classification (ASJC) codes
- Surfaces, Coatings and Films
これを引用
Synergistic effect of Sr 2+ and ReO 4 − adsorption on hexadecyl pyridinium-modified montmorillonite . / Luo, Wuhui; Inoue, Akihiro; Hirajima, Tsuyoshi; Sasaki, Keiko.
：: Applied Surface Science, 巻 394, 01.02.2017, p. 431-439.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Synergistic effect of Sr 2+ and ReO 4 − adsorption on hexadecyl pyridinium-modified montmorillonite
AU - Luo, Wuhui
AU - Inoue, Akihiro
AU - Hirajima, Tsuyoshi
AU - Sasaki, Keiko
PY - 2017/2/1
Y1 - 2017/2/1
N2 - Simultaneous adsorption of Sr 2+ and ReO 4 − , which are surrogates of 90 Sr 2+ and 99m TcO 4 − , on hexadecyl pyridinium (HDPy + )-modified montmorillonite (HDPy/Mt) was investigated. When the amount of HDPy + corresponding to 0.92 times the cation exchange capacity (CEC) of Mt was added, the obtained composite (HDPy/Mt–0.92) showed considerable adsorption capacities for Sr 2+ and ReO 4 − . Some HDPy + desorbed from the Mt layer in the presence of ReO 4 − , providing negatively charged sites on the Mt surface for Sr 2+ adsorption. The desorbed HDPy + interacted with ReO 4 − and was trapped in the composite in the form of HDPy–ReO 4 , resulting in adsorption of ReO 4 − . At high initial concentrations of ReO 4 − , the HDPy configuration changed after adsorption because of the desorption–adsorption process, which was supported by X-ray diffraction. Based on the results of X-ray photoelectron spectroscopy, in the binary system (i.e., Sr 2+ and ReO 4 − ), Sr 2+ uptake occurred in the interlayer space, while adsorption of ReO 4 − occurred on the external surface and probably in the interlayer space. Desorption–adsorption and ion exchange account for Sr 2+ uptake, while adsorption of ReO 4 − was mainly attributed to desorption–adsorption. Compared with the one-adsorbate system, a synergistic effect of simultaneous adsorption of Sr 2+ and ReO 4 − was found in the two-adsorbate system.
AB - Simultaneous adsorption of Sr 2+ and ReO 4 − , which are surrogates of 90 Sr 2+ and 99m TcO 4 − , on hexadecyl pyridinium (HDPy + )-modified montmorillonite (HDPy/Mt) was investigated. When the amount of HDPy + corresponding to 0.92 times the cation exchange capacity (CEC) of Mt was added, the obtained composite (HDPy/Mt–0.92) showed considerable adsorption capacities for Sr 2+ and ReO 4 − . Some HDPy + desorbed from the Mt layer in the presence of ReO 4 − , providing negatively charged sites on the Mt surface for Sr 2+ adsorption. The desorbed HDPy + interacted with ReO 4 − and was trapped in the composite in the form of HDPy–ReO 4 , resulting in adsorption of ReO 4 − . At high initial concentrations of ReO 4 − , the HDPy configuration changed after adsorption because of the desorption–adsorption process, which was supported by X-ray diffraction. Based on the results of X-ray photoelectron spectroscopy, in the binary system (i.e., Sr 2+ and ReO 4 − ), Sr 2+ uptake occurred in the interlayer space, while adsorption of ReO 4 − occurred on the external surface and probably in the interlayer space. Desorption–adsorption and ion exchange account for Sr 2+ uptake, while adsorption of ReO 4 − was mainly attributed to desorption–adsorption. Compared with the one-adsorbate system, a synergistic effect of simultaneous adsorption of Sr 2+ and ReO 4 − was found in the two-adsorbate system.
UR - http://www.scopus.com/inward/record.url?scp=84994008664&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994008664&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2016.10.135
DO - 10.1016/j.apsusc.2016.10.135
M3 - Article
AN - SCOPUS:84994008664
VL - 394
SP - 431
EP - 439
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -