Preparation and SERS properties of Ag-deposited TiO2 nanobelts

DONG Liya; JI Tianhao; HAN Peng; SUN Baoguo

doi:10.3969/j.issn.0438-1157.2012.02.043

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Preparation and SERS properties of Ag-deposited TiO2 nanobelts

更新时间：2025-12-10

- Preparation and SERS properties of Ag-deposited TiO2 nanobelts
- CIESC Journal Issue 2, Pages: 640-646(2012)
- 作者机构：
  
  北京工商大学理学院和食品学院,北京
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.02.043
  CLC：
- Online First：05 February 2012，
  
  Published：05 February 2012
- 稿件说明：
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DONG Liya, JI Tianhao, HAN Peng, et al. Preparation and SERS properties of Ag-deposited TiO2 nanobelts[J]. CIESC Journal, 2012, (2): 640-646.
DOI：

DONG Liya, JI Tianhao, HAN Peng, et al. Preparation and SERS properties of Ag-deposited TiO2 nanobelts[J]. CIESC Journal, 2012, (2): 640-646. DOI： 10.3969/j.issn.0438-1157.2012.02.043.

摘要

采用紫外光还原法和种子法制得了不同含量Ag纳米粒子负载的锐钛矿型TiO2纳米带复合材料。用各种测试技术对产物的物相、形貌、Ag负载情况以及SERS性质进行了一系列表征。测试结果表明，以紫外光还原法获得的产物中Ag完全负载在TiO2纳米带表面，其粒径主要处在10～50 nm间，且Ag负载量随着还原次数增多而缓慢增加。在此基础上，以种子法制得的产物中Ag负载量则显著增大，覆盖率可达80 %以上。这种含Ag纳米复合材料具有检测吡啶分子的SERS活性，其Ag负载量越多，SERS效应越明显。

Abstract

A series of Ag-deposited anatase TiO2 nanobelts with different Ag content were prepared using ultraviolet-light reduction or/and seeding growth proceeding. The structure

morphology

Ag-deposition and SERS properties of the products were measured by various techniques. The measurement results show that the Ag nanoparticles reduced by ultraviolet-light

mainly in a diameter range of 10-50 nm

were deposited completely on the surface of TiO2 nanobelts

and the Ag content slowly enhances with the increase of reduction times. Based on the product

the nanocomposite with much more Ag content and coverage above 80 % was further obtained through seeding growth of Ag nanoparticles. The products remarkably exhibit surface-enhanced Raman scattering (SERS) activities using pyridine as a probe molecule

and the more Ag nanoparticles are

the stronger SERS signal is.

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