High performance polydopamine-functionalized mesoporous silica nanospheres for U(VI) removal | |
Bai, Linfeng1,2; Duan, Shengxia3; Jiang, Wanquan1; Liu, Mei1; Wang, Sheng1; Sang, Min1; Gong, Xinglong2; Li, Jiaxing3; Xuan, Shouhu2 | |
刊名 | APPLIED SURFACE SCIENCE |
2017-12-31 | |
卷号 | 426期号:无页码:1121-1132 |
关键词 | Dopamine Mesoporous silica Adsorption U(VI) |
ISSN号 | 0169-4332 |
DOI | 10.1016/j.apsusc.2017.07.274 |
英文摘要 | This work reports the fabrication of polydopamine-functionalized mesoporous silica (mSiO(2)/PDA) nanospheres for removing U(VI) from aqueous solution. The maximum adsorption capacity of mSiO(2)/PDA is 332.3mg/g at 318.15 K and pH = 5.5. In comparison to the pristine mSiO(2), the adsorption capacity of mSiO(2)/PDA has been remarkably enhanced, which can be ascribed to the large amounts of functional groups existed on the surface of mSiO(2)/PDA. The adsorption process fits well with the pseudo-second-order kinetics model. The adsorption isotherm follows the Langmuir isotherm model, revealing a monolayer adsorption of U(VI) onto mSiO(2)/PDA. Thermodynamic analysis indicates a spontaneous and endothermic adsorption process. Additionally, this adsorption process is pH-dependent, while the effect of ionic strength is negligible. (C) 2017 Elsevier B.V. All rights reserved. |
资助项目 | Collaborative Innovation Center of Suzhou Nano Science and Technology ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040502] ; fundamental research funds for the Central Universities[WK2480000002] ; National Natural Science Foundation of China[11372301] ; National Natural Science Foundation of China[11572310] |
WOS关键词 | MULTIWALLED CARBON NANOTUBES ; AQUEOUS-SOLUTIONS ; GRAPHENE OXIDE ; EFFICIENT REMOVAL ; URANIUM EXTRACTION ; BIO-NANOCOMPOSITES ; WASTE-WATER ; ADSORPTION ; SORPTION ; RADIONUCLIDES |
WOS研究方向 | Chemistry ; Materials Science ; Physics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000413658200125 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35741] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Jiang, Wanquan; Gong, Xinglong; Xuan, Shouhu |
作者单位 | 1.USTC, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Dept Chem, Hefei 230026, Anhui, Peoples R China 2.USTC, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230027, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Key Lab Novel Thin Film Solar Cells, POB 1126, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Bai, Linfeng,Duan, Shengxia,Jiang, Wanquan,et al. High performance polydopamine-functionalized mesoporous silica nanospheres for U(VI) removal[J]. APPLIED SURFACE SCIENCE,2017,426(无):1121-1132. |
APA | Bai, Linfeng.,Duan, Shengxia.,Jiang, Wanquan.,Liu, Mei.,Wang, Sheng.,...&Xuan, Shouhu.(2017).High performance polydopamine-functionalized mesoporous silica nanospheres for U(VI) removal.APPLIED SURFACE SCIENCE,426(无),1121-1132. |
MLA | Bai, Linfeng,et al."High performance polydopamine-functionalized mesoporous silica nanospheres for U(VI) removal".APPLIED SURFACE SCIENCE 426.无(2017):1121-1132. |
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