A functionalized hybrid silicate adsorbent derived from naturally abundant low-grade palygorskite clay for highly efficient removal of hazardous antibiotics | |
Tian GY(田光燕)1,2,3; Wang WB(王文波)1,3; Zong L(宗莉)1,3; Kang YR(康玉茹)1,3; Wang AQ(王爱勤)1,3; Wang WB(王文波); Wang WB(王文波); Wang WB(王文波); Wang AQ(王爱勤); Wang AQ(王爱勤) | |
刊名 | Chemical Engineering Journal |
2016 | |
卷号 | 293页码:376-385 |
关键词 | Palygorskite Hybrid silicate adsorbent Hydrothermal Adsorption Antibiotics |
ISSN号 | 1385-8947 |
通讯作者 | 王爱勤 ; 王文波 |
英文摘要 | As promising eco-friendly materials, natural silicates have received great attention as abundant, low-cost, non-toxic, stable, and environmentally benign adsorbents. Inspired by the idea of “from nature, for nature”, a series of highly efficient hybrid silicate adsorbents were synthesized via a simple one-step hydrothermal process, using naturally abundant low-grade palygorskite (PAL) as the initial material in the presence of sodium silicate (SS), magnesium sulfate (MS), and monochloroacetic acid (MCA). As expected, the PAL crystal and the associated minerals were restructured as amorphous and multi-porous Mg, Al-silicates, while the active COOH groups were simultaneously introduced into the silicate to form a hybrid adsorbent with a specific surface area of 410.61 m2/g (compared to 52.87 m2/g for raw PAL). The hybrid silicate adsorbent showed excellent adsorption capabilities for the antibiotics chlortetracycline (CTC) (329.84 mg/g) and oxytetracycline (OTC) (207.47 mg/g), which were enhanced by 218.9% and 107.9%, respectively, in contrast to that of raw PAL. The adsorption of the hybrid adsorbent for CTC and OTC was pH-dependent, and the pH values of 3.56–7.82 (for CTC) and 3.45–7.57 (for OTC) favored the adsorption. The dynamic adsorption process was well described by a pseudo second-order model, which suggested that chemical adsorption was the prominent driving force. The thermodynamic adsorption pattern agreed well with the Redlich–Peterson model, revealing that the heterogeneous surface was the main adsorption site and that removal of antibiotics occurred mainly by multi-layer adsorption. |
学科主题 | 功能复合材料 ; 材料学 |
收录类别 | SCI |
资助信息 | National Natural Science Foundation of China (No. 51403221;21377135);“863” Project of the Ministry of Science and Technology, People’s Republic of China (No. 2013AA032003);Jiangsu Provincial Joint Innovation and Research Funding of Enterprises, Colleges and Institutes—Prospective Cooperative Research Project (No. BY2015056-01) |
语种 | 英语 |
WOS记录号 | WOS:000374602600040 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/19557] |
专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
通讯作者 | Wang WB(王文波); Wang WB(王文波); Wang WB(王文波); Wang AQ(王爱勤); Wang AQ(王爱勤); Wang AQ(王爱勤); Wang AQ(王爱勤); Wang WB(王文波); Wang AQ(王爱勤); Wang AQ(王爱勤); Wang WB(王文波) |
作者单位 | 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.Chinese Acad Sci, Lanzhou Inst Chem Phys, R&D Ctr Xuyi Palygorskite Appl Technol, Xuyi 211700, Peoples R China |
推荐引用方式 GB/T 7714 | Tian GY,Wang WB,Zong L,et al. A functionalized hybrid silicate adsorbent derived from naturally abundant low-grade palygorskite clay for highly efficient removal of hazardous antibiotics[J]. Chemical Engineering Journal,2016,293:376-385. |
APA | Tian GY.,Wang WB.,Zong L.,Kang YR.,Wang AQ.,...&王文波.(2016).A functionalized hybrid silicate adsorbent derived from naturally abundant low-grade palygorskite clay for highly efficient removal of hazardous antibiotics.Chemical Engineering Journal,293,376-385. |
MLA | Tian GY,et al."A functionalized hybrid silicate adsorbent derived from naturally abundant low-grade palygorskite clay for highly efficient removal of hazardous antibiotics".Chemical Engineering Journal 293(2016):376-385. |
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