Preparation and characterization of layer-by-layer assembly of thiols/Ag nanoparticles/polydopamine on PET bottles for the enrichment of organic pollutants from water samples
Preparation and characterization of layer-by-layer assembly of thiols/Ag nanoparticles/polydopamine on PET bottles for the enrichment of organic pollutants from water samples
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PET瓶上硫醇/银纳米颗粒/聚多巴胺层层组装的制备和表征，用于富集水样中的有机污染物
DOI：
10.1039/c2jm30952a
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发表时间：
2012-07
影响因子：
--
通讯作者：
Cai, Yaqi1
中科院分区：
文献类型：
--
作者：
Niu, Hongyun1;Wang, Saihua1, 2;Zeng, Tao1;Wang, Yixuan1, 3;Zhang, Xiaole1, 4;Meng, Zhaofu3;Cai, Yaqi1
在这项研究中，我们将硫醇/银纳米粒子/聚多巴胺（硫醇/AgNPs/PDOPA）吸附剂通过逐层组装技术组装到100 mL PET瓶的内壁上。聚多巴胺膜是多巴胺在碱性溶液中自聚合形成的，它负责吸附剂的牢固粘附和Ag+还原成AgNPs。AgNPs增加了瓶子的比表面积，并通过Ag-S键提供疏水性硫醇。有机分析物可以通过与AgNP表面上的硫醇的疏水相互作用和/或与PDOPA膜的π-π堆叠相互作用来吸附。使用这些瓶子富集有机污染物可以通过手动振动装有水样的瓶子1分钟并静置一定时间来进行。弃去水溶液后，用乙腈收集目标物。这种新型的固相萃取（SPE）方法不需要特殊的仪器和电源，在水样的运输或储存过程中就可以进行有机污染物的富集，节省了分析时间。水样可以在室温下安全地储存在瓶中，并且由于瓶子的棕色和AgNPs的抗菌活性，避免了有机分析物的光催化降解和生物降解。可以降低水样储存的成本以及样品运输和储存期间分析物的损失。将该方法成功地应用于真实的水样中2种烷基酚、2种邻苯二甲酸酯和6种多环芳烃的萃取。目标物的回收率范围为70- 120%，检测限范围为0.1-68 ng L-1。
In this study, we immobilize thiols/Ag nanoparticles/polydopamine (thiols/AgNPs/PDOPA) sorbents onto the inner walls of 100 mL of PET bottles via layer-by-layer assembly technique. The polydopamine film, resulting from selfpolymerizing of dopamine in alkaline solution, is responsible for the firm adhesion of sorbents and reduction of Ag+ to AgNPs. AgNPs increase the specific surface areas of the bottles and supply hydrophobic thiols ad-layers through Ag–S bonds. Organic analytes can be sorbed via hydrophobic interaction with thiols on AgNPs surface and/or π–π stack interaction with PDOPA film. The enrichment of organic contaminants using these bottles can be performed by manual vibration of bottles loading with water samples for 1 min and standing for a certain time. After discarding the aqueous solution, the targets are collected with acetonitrile. In this novel kind of solid-phase extraction (SPE) method, no special instruments and electricity power are required and enrichment of organic contaminants can proceed during transport or storage of water samples, which will save the analytical time. Water samples can be stored in the bottles safely at room temperature and photocatalytic degradation, biodegradation of organic analytes are avoided due to the brown color of the bottle and antibacterial activity of AgNPs. The cost for water sample storage and loss of analytes during sample transport and storage can be decreased. The new SPE method is successfully applied to extract target analytes including two alkylphenols, two phthalate esters and six polycyclic aromatic hydrocarbons from real water samples. The recoveries of targets are ranged from 70–120%, and the detection limits are in the range of 0.1–68 ng L−1.
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影响因子：
--
作者：
Fang WC
通讯作者：
Fang WC
影响因子：
10.8
作者：
Andrew L. Vance;T. Willey;T. Buuren;A. Nelson;C. Bostedt;G. A. Fox;L. Terminello
通讯作者：
Andrew L. Vance;T. Willey;T. Buuren;A. Nelson;C. Bostedt;G. A. Fox;L. Terminello
DOI：
10.1021/jp808009t
发表时间：
2008-11
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Chunhui Liu;Haiying He;R. Pandey;S. Hussain;S. Karna
通讯作者：
Chunhui Liu;Haiying He;R. Pandey;S. Hussain;S. Karna
影响因子：
13.1
作者：
Poole, CF
通讯作者：
Poole, CF
影响因子：
13.1
作者：
Peñalver, A;Pocurull, E;Marcé, RM
通讯作者：
Marcé, RM