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Recent advances in SERS detection of perchlorate

Jumin Hao, Xiaoguang Meng

《化学科学与工程前沿（英文）》 2017年第11卷第3期页码 448-464 doi: 10.1007/s11705-017-1611-9

摘要： Perchlorate has recently emerged as a widespread environmental contaminant of healthy concern. Development of novel detection methods for perchlorate with the potential for field use has been an urgent need. The investigation has shown that surface-enhanced Raman scattering (SERS) technique has great potential to become a practical analysis tool for the rapid screening and routine monitoring of perchlorate in the field, particularly when coupled with portable/handheld Raman spectrometers. In this review article, we summarize progress made in SERS analysis of perchlorate in water and other media with an emphasis on the development of SERS substrates for perchlorate detection. The potential of this technique for fast screening and field testing of perchlorate-contaminated environmental samples is discussed. The challenges and possible solutions are also addressed, aiming to provide a better understanding on the development directions in the research field.

关键词： perchlorate SERS detection substrate modification nanostructure

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V-shaped substrate for surface and volume enhanced Raman spectroscopic analysis of microplastics

《环境科学与工程前沿（英文）》 2022年第16卷第11期 doi: 10.1007/s11783-022-1578-8

摘要：

● V-shaped substrate was obtained for SERS analysis of microplastics (diameter ≈ 1 μm).

关键词： SERS V-shaped AAO Microplastic Atmospheric aerosol

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Cystine-assisted accumulation of gold nanoparticles on ZnO to construct a sensitive surface-enhanced Raman spectroscopy substrate

《化学科学与工程前沿（英文）》 2023年第17卷第1期页码 15-23 doi: 10.1007/s11705-022-2177-8

摘要： Recently, various semiconductor/metal composites have been developed to fabricate surface-enhanced Raman spectroscopy substrates. However, low metal loading on semiconductors is still a challenge. In this study, cystine was introduced to increase the accumulation of gold nanoparticles on zinc oxide, owing to the biomineralization property of cystine. Morphological analysis revealed that the obtained ZnO/Au/cystine composite not only had a higher metal loading but also formed a porous structure, which is beneficial for Raman performance. Compared with ZnO/Au, the ZnO/Au/cystine substrate displayed a 40-fold enhancement in the Raman signal and a lower limit of detection (10^–11 mol·L⁻¹) in the detection of rhodamine 6G. Moreover, the substrate has favorable homogeneity and stability. Finally, ZnO/Au/cystine displayed excellent performance toward crystal violet and methylene blue in a test based on river water samples. This study provided a promising method to fabricate sensitive semiconductor/noble metal-based surface-enhanced Raman spectroscopy substrates for Raman detection.

关键词： biomineralization cystine semiconductor/metal composite SERS detection Raman detection

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SERS nanoprobes for bio-application

Han-Wen Cheng,Jin Luo,Chuan-Jian Zhong

《化学科学与工程前沿（英文）》 2015年第9卷第4期页码 428-441 doi: 10.1007/s11705-015-1536-0

摘要： The ability to tune the size, shape, composition and surface properties impart nanoparticles with the desired functions for bio-application. This article highlights some of the recent examples in the exploration of metal (e.g., gold and silver) nanoparticles, especially those with magnetic properties and bio-conjugated structures, as theranostic nanoprobes. Such nanoprobes exhibit tunable optical, spectroscopic, magnetic, and electrical properties for signal amplifications. Examples discussed in this article will focus on the nanoproble-enhanced colorimetric detection and surface enhanced Raman scattering (SERS) detection of biomarkers or biomolecules such as proteins and DNAs. The understanding of factors controlling the biomolecular interactions is essential for the design of SERS nanoprobes with theranostic functions.

关键词： surface-enhanced Raman scattering functional nanoprobes bio-conjugation metal nanoparticles magnetic properties theranostic materials

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面向生物医学临床应用的激光微加工功能表面 Article

胡国庆, 管凯, 卢立斌, 张佳茹, 聂璐, 管迎春

《工程（英文）》 2018年第4卷第6期页码 822-830 doi: 10.1016/j.eng.2018.09.009

摘要：

金属医用材料以其高强度、强抗断性、优良的导电性和良好的生物相容性等特点，在医疗器械中日益得到广泛应用。但金属医用材料表面生物性能的不足在很大程度上限制了其进一步的应用。激光微加工是一种增强材料表面性能的先进技术，本文系统验证、展示激光微加工医用金属生物材料镁合金和钛合金的可行性，阐述其在细胞黏附和液体活检的应用前景。本文研究激光与材料的相互作用、材料微结构演化和表面性能，分析相关细胞行为和表面增强拉曼散射效应。实验结果表明，细胞在激光微加工表面黏附性能好，并可沿预先设计结构方向生长。此外，激光功能表面可显著增强拉曼信号，增强因子可达6×10³ 以上。

关键词：激光微加工功能表面金属合金生物相容性表面增强拉曼散射