CAJ | 학술논문

通过溶胶-凝胶法以四甲氧基硅烷（TMOS）和甲基三甲氧基硅烷（MTMS）作为混合的前体，聚乙二醇（PEG ）为致孔剂，制备了具有贯通孔道结构的双孔硅胶整体柱，采用3-巯基丙基三甲氧基硅烷（MTPMS）对硅胶整体柱表面进行巯基化修饰后，分别将金、银纳米粒子组装在整体柱材料表面。利用透射电子显微镜（TEM）、紫外-可见吸收光谱（UV-Vis）、扫描电子显微镜（SEM ）对金、银纳米粒子形貌、吸收光谱及组装金、银纳米粒子前后整体柱的形貌进行了表征。以对巯基苯胺（PATP）为探针分子，分别采用波长为633和532 nm的激发光作为激发光源，研究金和银纳米粒子修饰的硅胶整体柱的在柱表面增强拉曼光谱（SERS）性能。结果表明，该基底呈现出很强的SERS活性，结合整体柱的分离富集优势将在食品/环境领域现场痕量检测方面具有广泛的应用前景。
통과용효-응효법이사갑양기규완（TMOS）화갑기삼갑양기규완（MTMS）작위혼합적전체，취을이순（PEG ）위치공제，제비료구유관통공도결구적쌍공규효정체주，채용3-구기병기삼갑양기규완（MTPMS）대규효정체주표면진행구기화수식후，분별장금、은납미입자조장재정체주재료표면。이용투사전자현미경（TEM）、자외-가견흡수광보（UV-Vis）、소묘전자현미경（SEM ）대금、은납미입자형모、흡수광보급조장금、은납미입자전후정체주적형모진행료표정。이대구기분알（PATP）위탐침분자，분별채용파장위633화532 nm적격발광작위격발광원，연구금화은납미입자수식적규효정체주적재주표면증강랍만광보（SERS）성능。결과표명，해기저정현출흔강적SERS활성，결합정체주적분리부집우세장재식품/배경영역현장흔량검측방면구유엄범적응용전경。
A novel silica monolith modified with Ag/Au nanoparticles was prepared for the on-column surface enhanced Raman spectroscopy (SERS ) . The bare monolithic silica column was prepared from in-situ co-condensation of tetraethoxysilane (TMOS)andmethyltrimethoxysilane(MTMS)inthepresenceofpolyethyleneglycol(PEG)viaasol-gelprocessinthecapil-lary ,and was chemically modified with (3-mercaptopropyl) trimethoxysilane (MTPMS) ,followed by immobilization of Ag/Au nanoparticles .Transmission electron microscopy (TEM) and UV-Vis spectrometer were used to collect the TEM images and the extinction spectra of the nanoparticles colloid ,respectively .Scanning electron microscope (SEM ) was utilized to record the mor-phology of the silica monolith .The authros used p-aminothiophenol (PATP) as a probing molecule ,and the SERS effect was in-vestigated on Au/Ag nanoparticle-modified silica monolith under the excitation line of 633 and 532 nm ,respectively .It is conclu-ded that nanoparticle-modified silica monoliths will have broad application to the on-site detection of food and water contaminants in the field .