Lignin-AuNPs liquid marble for remotely-controllable detection of Pb(2).

Lignin-AuNPs liquid marble for remotely-controllable detection of Pb(2).
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用于远程控制 Pb2 检测的木质素-AuNPs 液体大理石

DOI:
10.1038/srep38164
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发表时间:
2016-12-02
期刊:
影响因子:
4.6
通讯作者:
Sun R
Sun R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Han G;Wang X;Hamel J;Zhu H;Sun R

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这项工作报道了一种绿色、简便的多功能木质素-AuNP复合材料的制备,这种复合材料可以很容易地远程封装,形成新颖的液体弹珠。这种大理石可以悬浮在水中,并显示出优异的光热转化性能,以及对Pb2+的视觉检测和吸附。更重要的是,通过简单地控制近红外(NIR)辐射,这种弹子可以同时通过共沉淀远程检测和吸附Pb2+。可以认为,可远程控制的近红外响应木质素-AuNPs液体大理石可以用于与Pb2+相关的反应。液体大理石可以在反应一开始就放入系统中,并稳定地停留在表面,直到反应结束。反应后,在远程近红外照射下,液体大理石破裂吸附Pb2+,并可收集剩余的Pb2+。这种灵活的操作策略不需要使用复杂的纳米结构或复杂的设备,因此它在无通道微流体、智能微反应器、微发动机等方面具有潜在的应用前景。
This work reported the green and facile fabrication of a versatile lignin-AuNP composite, which was readily and remotely encapsulated to form novel liquid marbles. The marbles can stay suspended in water, and show excellent photothermal conversion properties, as well as visual detection and adsorption towards Pb2+. More importantly, the marbles can simultaneously remotely detect and adsorb Pb2+via co-precipitation by simply controlling the near infrared (NIR) irradiation. It is believed that the remotely-controllable NIR-responsive lignin-AuNPs liquid marble can be used in Pb2+-related reactions. The liquid marble can be placed in the system at the very beginning of the reaction and stably stays on the surface until the reaction has ended. After reacting, upon remote NIR irradiation, the liquid marble bursts to adsorb Pb2+, and the residual Pb2+can be collected. This facile manipulation strategy does not use complicated nanostructures or sophisticated equipment, so it has potential applications for channel-free microfluidics, smart microreactors, microengines, and so on.
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