模板光催化法制备Ag空心纳米材料及其增强拉曼研究
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- 英文论文题名：Templated Photocatalytic Synthesis of Ag Hollow Nanomaterial for Surface-enhanced Raman Scattering
- 论文作者：钟永 ; 王杰菲 ; 谢静 ; 陈苏迪 ; 曹荣慧 ; 王亮 ; 白锋
- 英文论文作者：Yong Zhong ; Jiefei Wang ; Jing Xie ; Sudi Chen ; Ronghui Cao ; Liang Wang ; Feng Bai ; Key Laboratory for Special Functional Materials of the Ministry of Education ; Henan University
- 年：2016
- 作者机构：特种功能材料教育部重点实验室;
- 论文关键词：光催化 ; 组装体 ; 空腔 ; 增强拉曼 ; 构效关系
- 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-第三十七分会：纳米催化
- 语种：中文
- 分类号：O614.122;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 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：268k
- 原文格式：D
- 会议级别：全国
摘要
贵金属纳米空心材料不仅因其低密度、高比表面积、省材和价廉等优点,而且还具有优于其本体材料的催化和光学活性、特别是其空心贵金属内外表面的等离子体共振可以极大地增强SERS信号,而备受人们广泛的关注。~([1-3])我们采用单分散自组装纳米材料为模板,利用其优异的光催化特性,原位还原贵金属Ag的前躯体,通过后续简单的移除中间卟啉模板,得到了一系列不同形貌、不同空腔的Ag多孔空心纳米材料,从SEM、TEM、XRD等一系列的表征手段发现,Ag空心纳米材料的厚度为~20 nm;XRD显示空心纳米材料有较好的晶型;氮气吸附及孔径测试发现,空心材料具有较大的比表面积,并以R6G分子为表面增强拉曼(SERS)探测对象,实现了较好的性能和一定的空腔结构构效关系。
Hollow precious metals material because of its low density, high specific surface area, material saving and low price etc, but also of catalytic and optical activity superior to body material, especially of its surface plasma resonance of inside and outside nanoparticles can greatly enhance SERS signals, aroused people's widespread attention.~([1-3]) We used self-assembly materials as templates, photocatalytic reduction Ag in situ and removed the middle porphyrin templates subsequently, got a series of different morphology and hollow cavity Ag nanomaterials. Through SEM, TEM, XRD and other methods showed Ag hollow nanometer materials with a thickness of ~20 nm, good crystal and large specific surface area. Using R6G molecules as SERS detecting object, realized the detection of low concentration and certain structure-activity relationship of cavity structure.
Hollow precious metals material because of its low density, high specific surface area, material saving and low price etc, but also of catalytic and optical activity superior to body material, especially of its surface plasma resonance of inside and outside nanoparticles can greatly enhance SERS signals, aroused people's widespread attention.~([1-3]) We used self-assembly materials as templates, photocatalytic reduction Ag in situ and removed the middle porphyrin templates subsequently, got a series of different morphology and hollow cavity Ag nanomaterials. Through SEM, TEM, XRD and other methods showed Ag hollow nanometer materials with a thickness of ~20 nm, good crystal and large specific surface area. Using R6G molecules as SERS detecting object, realized the detection of low concentration and certain structure-activity relationship of cavity structure.
引文
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[2]Bankowska,M.;Krajczewski,J.;Dzi?cielewski,I.;Kudelski,A.;Weyher,J.L.J.Phys.Chem.C.2016,120:1841-1846
[3]Bai,F.;Sun,Z.;Wu,H.;Haddad,R.E.;Xiao,X.;Fan,H.Nano Lett.2011,11:3759-62.