Mesoporous hybrid Zn-silicate derived from red palygorskite clay as a high-efficient adsorbent for antibiotics | |
Department | 环境材料与生态化学研究发展中心 |
Wang WB(王文波)1,3; Tian GY(田光燕)1,2; Zong L(宗莉)1,3; Wang Q(汪琴)1,3; Zhou, Yanmin4; Wang AQ(王爱勤)1,3; Wang AQ(王爱勤) | |
2016 | |
Source Publication | Microporous and Mesoporous Materials |
ISSN | 1387-1811 |
Volume | 234Pages:317-325 |
Abstract | A hierarchical mesoporous hybrid Zn-silicate adsorbent with superior adsorption performance for aureomycin (AMC) and tetracycline (TC) has been successfully synthesized by employing an “all-into-one” strategy and one-pot hydrothermal reaction, using naturally abundant, low-cost red palygorskite clay (RPAL), sodium silicate and zinc salts as raw materials. The morphologies and crystal forms of the Zn-silicates can be tuned by altering the dosage of Zn2+ ions. Low-crystalline sheet-like Zn-silicates were formed at the Si/Zn ratio of 3:1 and 2:1, and zinc orthosilicates were obtained at the Si/Zn ratio of 1:1 and 1:2. A systematic study on their adsorption abilities for the antibiotics AMC and TC indicates that the sheet-like Zn-silicate has higher adsorption capacity for AMC and TC than zinc orthosilicate, and the Zn-silicate with Si/Zn ratio of 3:1 has the best adsorption capacity of 384 mg/g for AMC and 337 mg/g for TC, which is obviously higher than that of RPAL (154 mg/g for AMC and 140 mg/g for TC). The adsorption properties are dependent on the pore size and surface charges, instead of specific surface area. The average pore sizes of 10.62–11.50 nm and the negative surface charge (−42.54 mV) resulting from the –Si(M)O− groups are beneficial to the adsorption for both AMC and TC. The adsorption process mainly involves with monolayer coverage, and chemo-adsorption plays a key role for the enhanced adsorption capacity. The results suggest that the Zn-silicates derived from natural abundant clay mineral have superior performance, and could be candidates to remove AMC and TC from the wastewater with high amounts of AMC and TC. |
Keyword | Palygorskite Zinc Silicate Hydrothermal Aureomycin Tetracycline Adsorption |
Subject Area | 环境材料与生态化学 |
DOI | 10.1016/j.micromeso.2016.07.029 |
Funding Organization | the National Natural Science Foundation of China (NO. 51403221);the Jiangsu Provincial Joint Innovation and Research Funding of Enterprises, Colleges and Institutes (No. BY2015056-01);the Huai'an Cooperative Research Project of the Enterprises, Colleges and Institutes (No. HAC2015005);the Youth Innovation Promotion Association CAS (2016370) |
Indexed By | SCI |
If | 3.615 |
Language | 英语 |
Funding Project | 功能复合材料组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20052 |
Collection | 环境材料与生态化学研究发展中心 |
Corresponding Author | Wang AQ(王爱勤) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Key Lab Clay Mineral Appl Res Gansu Prov, Lanzhou 730000, Peoples R China 4.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China |
Recommended Citation GB/T 7714 | Wang WB,Tian GY,Zong L,et al. Mesoporous hybrid Zn-silicate derived from red palygorskite clay as a high-efficient adsorbent for antibiotics[J]. Microporous and Mesoporous Materials,2016,234:317-325. |
APA | Wang WB.,Tian GY.,Zong L.,Wang Q.,Zhou, Yanmin.,...&王爱勤.(2016).Mesoporous hybrid Zn-silicate derived from red palygorskite clay as a high-efficient adsorbent for antibiotics.Microporous and Mesoporous Materials,234,317-325. |
MLA | Wang WB,et al."Mesoporous hybrid Zn-silicate derived from red palygorskite clay as a high-efficient adsorbent for antibiotics".Microporous and Mesoporous Materials 234(2016):317-325. |
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