当前位置：
X-MOL 学术
›
ACS Sustain. Chem. Eng.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
One-Pot Synthesis of a Three-Dimensional Au-Decorated Cellulose Nanocomposite as a Surface-Enhanced Raman Scattering Sensor for Selective Detection and in Situ Monitoring
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-02-10 , DOI: 10.1021/acssuschemeng.0c09296 Xinman Hu 1 , Binbin Yang 1 , Xiaodong Wen 1 , Jianning Su 1 , Baoquan Jia 2, 3 , Feiya Fu 1 , Yanyan Zhang 4 , Qili Yu 3 , Xiangdong Liu 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-02-10 , DOI: 10.1021/acssuschemeng.0c09296 Xinman Hu 1 , Binbin Yang 1 , Xiaodong Wen 1 , Jianning Su 1 , Baoquan Jia 2, 3 , Feiya Fu 1 , Yanyan Zhang 4 , Qili Yu 3 , Xiangdong Liu 1
Affiliation
|
Metal nanoparticles (NPs) have been commonly introduced onto flexible platforms for improving their exploitation. However, such an introducing process of NPs is hard to achieve, and additional dispersants and high-energy consumption are largely required in existing studies. In this study, a one-pot method was developed to synthesize Au NPs in a cellulose dope. The dissolved cellulose chains acted as a green reductant as well as a stabilizer. As the polysaccharide dope coagulated, a three-dimensional (3D) regenerated cellulose nanocomposite decorated with 0.29–1.07 wt % Au NPs was successfully synthesized. As supported by the “hot spot” effect among the Au NPs embedded in the 3D structure, the nanocomposite could act as a sensitive surface-enhanced Raman scattering (SERS) substrate. Accordingly, this study achieved an enhancement factor of 2.8 × 107 and a limit of detection of 10–9 M when R6G was employed as a probe molecule. Moreover, as impacted by the porous structure of the SERS substrate, 2.5 mg/kg melamine in milk could be directly detected. Furthermore, organic contaminants were catalytically reduced, and the process of catalytic reduction underwent in situ SERS monitoring with excellent sensitivity.
中文翻译：
一锅合成的三维金装饰纤维素纳米复合材料作为表面增强拉曼散射传感器的选择性检测和原位监测
金属纳米颗粒（NPs）通常已引入到柔性平台中以改善其开发利用。但是，这样的NP的引入过程难以实现，并且在现有研究中主要需要额外的分散剂和高能量消耗。在这项研究中，开发了一种一锅法来合成纤维素涂料中的金纳米颗粒。溶解的纤维素链充当绿色还原剂和稳定剂。随着多糖原液的凝结，成功合成了饰有0.29–1.07 wt％Au NPs的三维（3D）再生纤维素纳米复合材料。如嵌入3D结构的Au NP之间的“热点”效应所支持，纳米复合材料可以充当敏感的表面增强拉曼散射（SERS）衬底。因此，这项研究获得了2.8×10的增强因子。7和检测的10的限制-9时R6G被用作探针分子微米。此外，受SERS基质多孔结构的影响，可以直接检测到牛奶中2.5 mg / kg的三聚氰胺。此外，有机污染物被催化还原，并且催化还原过程以优异的灵敏度进行了原位SERS监测。
更新日期：2021-03-01
中文翻译：
一锅合成的三维金装饰纤维素纳米复合材料作为表面增强拉曼散射传感器的选择性检测和原位监测
金属纳米颗粒（NPs）通常已引入到柔性平台中以改善其开发利用。但是，这样的NP的引入过程难以实现，并且在现有研究中主要需要额外的分散剂和高能量消耗。在这项研究中，开发了一种一锅法来合成纤维素涂料中的金纳米颗粒。溶解的纤维素链充当绿色还原剂和稳定剂。随着多糖原液的凝结，成功合成了饰有0.29–1.07 wt％Au NPs的三维（3D）再生纤维素纳米复合材料。如嵌入3D结构的Au NP之间的“热点”效应所支持，纳米复合材料可以充当敏感的表面增强拉曼散射（SERS）衬底。因此，这项研究获得了2.8×10的增强因子。7和检测的10的限制-9时R6G被用作探针分子微米。此外，受SERS基质多孔结构的影响，可以直接检测到牛奶中2.5 mg / kg的三聚氰胺。此外，有机污染物被催化还原，并且催化还原过程以优异的灵敏度进行了原位SERS监测。
京公网安备 11010802027423号