异质结构的磁性等离子体纳米复合材料用于原位SERS监测催化反应
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- 英文论文题名：Heterogeneous structured Magnetoplasmonic Nanomaterials for in situ SERS Monitoring of Catalytic Reaction
- 论文作者：周宏建 ; 汪国忠 ; 赵惠军
- 英文论文作者：Hongjian Zhou ; Guozhong Wang ; Huijun Zhao ; Centre for Environmental and Energy Nanomaterials ; Institute of Solid State Physics ; Chinese Academy of Sciences ; Centre for Clean Environment and Energy ; Griffith University
- 年：2016
- 作者机构：中国科学院固体物理研究所环境与能源纳米材料中心;格里菲斯大学清洁环境与能源中心;
- 论文关键词：磁性自组装 ; 磁性等离子体 ; 拉曼监测 ; 催化反应
- 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-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB33;O657.37
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 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：109k
- 原文格式：D
- 会议级别：全国
摘要
以四氧化三铁和金为主体材料的磁性等离子体纳米复合材料作为结构单元,在外磁场诱导下将这些颗粒组装为一维磁性等离子纳米链(MPNCs)。随后以MPNCs表面的金壳为成核位点,通过原位还原的方法在纳米链表面生长出三维的花状银纳米片,从而得到异质结构的Fe_3O_4@Au@Ag磁性等离子体链(Fe_3O_4@Au@Ag NAMPCs)。所制备的Fe_3O_4@Au@Ag NAMPCs在结构上拥有大量的热点,能够作为拉曼基底增加检测的灵敏度,并表现出较高SERS信号的均一性和重现性。最后,我们利用Fe_3O_4@Au@Ag NAMPCs的均相光催化性和SERS原位检测的双重功能,将其用于监测4-NTP转化为DMAB的转化过程。
One-dimensional(1D) assembled magnetoplasmonic nanochains(MPNCs) were fabricated using Fe_3O_4@Au core-shell nanoparticles(NPs) through magnetic field induced assembly. With the help of silver growth solution, the 3D Fe_3O_4@Au@Ag nanoflowers assembled magnetoplasmonic chains(Fe_3O_4@Au@Ag NAMPCs) were prepared by in situ reduction method. An active site directed growth mechanism was proposed to explain the growth process of Fe_3O_4@Au@Ag NAMPCs. The Fe_3O_4@Au@Ag NAMPCs possessed large numbers of hot spots within highly ordered structure and used as the SERS substrate to enhance the sensitivity, uniformity and reproducibility of Raman signal. After that, the Fe_3O_4@Au@Ag NAMPCs, integrating a heterogeneous catalysis and in situ SERS detection, is assessed to monitoring the catalytic reduction of 4-nitrothiophenol(4-NTP) to p,p'-dimercaptoazobenzene(DMAB).
One-dimensional(1D) assembled magnetoplasmonic nanochains(MPNCs) were fabricated using Fe_3O_4@Au core-shell nanoparticles(NPs) through magnetic field induced assembly. With the help of silver growth solution, the 3D Fe_3O_4@Au@Ag nanoflowers assembled magnetoplasmonic chains(Fe_3O_4@Au@Ag NAMPCs) were prepared by in situ reduction method. An active site directed growth mechanism was proposed to explain the growth process of Fe_3O_4@Au@Ag NAMPCs. The Fe_3O_4@Au@Ag NAMPCs possessed large numbers of hot spots within highly ordered structure and used as the SERS substrate to enhance the sensitivity, uniformity and reproducibility of Raman signal. After that, the Fe_3O_4@Au@Ag NAMPCs, integrating a heterogeneous catalysis and in situ SERS detection, is assessed to monitoring the catalytic reduction of 4-nitrothiophenol(4-NTP) to p,p'-dimercaptoazobenzene(DMAB).
引文
[1]Zhou,H.;Bahng,J.H.;Kotov,N.A.;Lee,J.Adv.Funct.Maters 2014,24,1439-1448.
[2]Zhou,H.;Zou,F.;Koh,K.;Lee,J.J.Biomed.Nanotechnol.2014,10,2921-2949.
[3]Zhou,H.;Zou,F.;Hwang,D.Y.;Lee,J.ACS Appl.Mater.Interfaces 2014,6,19680-19689.
[4]Tran,V.T.;Zhou,H.;Lee,J.ACS Appl.Mater.Interfaces 2015,7,8650-8658
[2]Zhou,H.;Zou,F.;Koh,K.;Lee,J.J.Biomed.Nanotechnol.2014,10,2921-2949.
[3]Zhou,H.;Zou,F.;Hwang,D.Y.;Lee,J.ACS Appl.Mater.Interfaces 2014,6,19680-19689.
[4]Tran,V.T.;Zhou,H.;Lee,J.ACS Appl.Mater.Interfaces 2015,7,8650-8658