Au-Ag双金属复合纳米材料可控合成及硫离子传感性能
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- 英文论文题名：Controllable synthesis of Ag/Au bimetallic composite materials and their chemical sensing behavior to sulfide anion
- 论文作者：左园 ; 闫森 ; 赵甲 ; 张颖
- 英文论文作者：Yuan Zuo ; Sen Yan ; Jia Zhao ; Ying Zhang ; Key Laboratory of Applied Surface and Colloid Chemistry ; Ministry of Education ; School of Chemistry and Chemical Engineering ; Shaanxi Normal University
- 年：2016
- 作者机构：陕西师范大学化学化工学院应用表面与胶体化学教育部重点实验室;
- 论文关键词：pH-温度双重敏感性 ; Au-Ag双金属纳米粒子 ; 硫离子传感
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：159k
- 原文格式：D
- 会议级别：全国
摘要
硫离子的快速、简便和微量检测方法在天然水和废水检测中至关重要,纳米金、银作为探针检测S~(2-)表现出特异的灵敏性和选择性~([1])。与单一金属纳米粒子相比,由两种不同金属组成的核-壳型纳米粒子表现出更为优异的传感性能~([2-4])。本研究以温度-pH双重敏感性的聚N-异丙基丙烯酰胺(NIPAM)共聚3-甲基丙烯酰氧-丙基三甲氧基硅烷(MPTMS)/聚丙烯酸(PAA)(P(NIPAM-co-MPTMS)/PAA)微凝胶为载体材料,控制性合成Au-Ag双金属纳米粒子(Fig.1)。微凝胶负载可改善纳米粒子易团聚、难回收的不足,而且还可赋予纳米粒子环境敏感性能。研究表明,复合材料中Ag纳米粒子与S~(2-)的快速结晶形成Ag_2S,酸性条件下,S~(2-)的加入对Au-Ag核-壳纳米粒子的表面等离子共振吸收的强度随着S~(2-)用量的增大而线性下降,呈现出较低的检出限。
A fast,simple and micro-detection method of sulfide ions is extremely important in natural water and wastewater.Compared to monometallic nanoparticles(NPs),bimetallic NPs exhibit improved sensing behavior.In this paper,Au-Ag core-shell NPs were controllable synthesized using thermo-pH double sensitivity poly(N-isopropylacrylamide-co-3-methacryloxypropyltrimethoxysilane)/poly(acrylic acid)(P(NIPAM-co-MPTMS)/PAA) microgels as carriers.The loading of microgels can prevent NPs aggregation,and endowed the environmental sensitivity performance to NPs.The results showed that the chemical sensing of Au-Ag NPs to S~(2-) was based on quick crystallization from Ag to Ag_2S.Under the acidic condition,the strength of the SPR absorption of Au-Ag NPs decreased linearly with the increase of S~(2-) content,showing a lower detection limit of S~(2-).
A fast,simple and micro-detection method of sulfide ions is extremely important in natural water and wastewater.Compared to monometallic nanoparticles(NPs),bimetallic NPs exhibit improved sensing behavior.In this paper,Au-Ag core-shell NPs were controllable synthesized using thermo-pH double sensitivity poly(N-isopropylacrylamide-co-3-methacryloxypropyltrimethoxysilane)/poly(acrylic acid)(P(NIPAM-co-MPTMS)/PAA) microgels as carriers.The loading of microgels can prevent NPs aggregation,and endowed the environmental sensitivity performance to NPs.The results showed that the chemical sensing of Au-Ag NPs to S~(2-) was based on quick crystallization from Ag to Ag_2S.Under the acidic condition,the strength of the SPR absorption of Au-Ag NPs decreased linearly with the increase of S~(2-) content,showing a lower detection limit of S~(2-).
引文
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[4]Yang,K.;Luo,H.Q.;Zeng,M.;Jiang,Y.Y.;Li,J.M.;Fu.X.L.ACS Appl.Mater.Inter.2015,7:17399.
[2]Zhang,X.H.;Wei,M.;Lv,B.;Liu,Y.;Liu,X.;Wei,W.RSC Advances 2016,6:35001.
[3]Xiong,B.;Zhou,R.;Hao,J.R.;Jia,Y.H.;He,Y.;Yeung,E.S.Nature Communications 2013,4:1708.
[4]Yang,K.;Luo,H.Q.;Zeng,M.;Jiang,Y.Y.;Li,J.M.;Fu.X.L.ACS Appl.Mater.Inter.2015,7:17399.