可回收SERS基板的基本原理和应用

IF 2.5 2区 化学 Q3 CHEMISTRY, PHYSICAL International Reviews in Physical Chemistry Pub Date : 2019-04-03 DOI:10.1080/0144235X.2019.1660114
J. Prakash
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引用次数: 20

摘要

表面增强拉曼散射(SERS)衬底由等离子体纳米结构(PNSs)和光催化剂半导体组成,是一种新型的多功能纳米材料,可用于先进的工程应用。这些组合提高了这些系统的光催化活性,并扩展了它们作为可回收的SERS底物的应用,因为它们具有通过光降解被分析物分子的自清洁能力。这样的组合允许制造高灵敏度,可重复,稳定和可回收的SERS基板。本文重点介绍了这种可回收SERS基板的设计和工程方面的新进展。由PNSs (Au或Ag NSs)和半导体光催化剂(金属氧化物)制成的可回收SERS衬底;TiO2、ZnO、WO3、Fe3O4等;主要讨论了CdS、导电聚合物、Si NSs及其多功能作用的基本机理。这些可回收的SERS底物是检测和消除有机化合物(污染物)的潜在候选者,如详细讨论的那样,特别强调它们的可重复性和长期稳定性。此外,还讨论了当前面临的挑战和未来的潜在需求。
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Fundamentals and applications of recyclable SERS substrates
ABSTRACT Surface enhanced Raman scattering (SERS) substrates, composed of plasmonic nanostructures (PNSs) and photocatalyst semiconductors, have emerged as novel multifunctional nanomaterials for advanced engineering applications. These combinations improve the photocatalytic activity of such systems and extend their application as recyclable SERS substrates owing to their self-cleaning ability by photodegradation of analyte molecules. Such combinations allow the fabrication of highly sensitive, reproducible, stable and recyclable SERS substrates. The present article focusses on new developments in design and engineering of such recyclable SERS substrates. The recyclable SERS substrates made of PNSs (Au or Ag NSs) and semiconductor photocatalyst (metal oxides; TiO2, ZnO, WO3, Fe3O4, and others; CdS, conducting polymers, Si NSs) NSs are mainly discussed along with fundamental mechanisms of their multifunctional actions. These recyclable SERS substrates are potential candidates for the detection and elimination of organic compounds (pollutants) as discussed in detail with special emphasis on their reproducibility and long term stability. In addition, current challenges and future potential requirements are also discussed.
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来源期刊
CiteScore
14.20
自引率
1.60%
发文量
5
审稿时长
1 months
期刊介绍: International Reviews in Physical Chemistry publishes review articles describing frontier research areas in physical chemistry. Internationally renowned scientists describe their own research in the wider context of the field. The articles are of interest not only to specialists but also to those wishing to read general and authoritative accounts of recent developments in physical chemistry, chemical physics and theoretical chemistry. The journal appeals to research workers, lecturers and research students alike.
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