Synergistic Enhancement Effect for Boosting Raman Detection Sensitivity of Antibiotics

ACS Sensors ◽  
2019 ◽  
Vol 4 (11) ◽  
pp. 2958-2965 ◽  
Author(s):  
Yan Zhai ◽  
Yunshan Zheng ◽  
Zhiyuan Ma ◽  
Yanzheng Cai ◽  
Feng Wang ◽  
...  
Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2130 ◽  
Author(s):  
Quanguo He ◽  
Jun Liu ◽  
Xiaopeng Liu ◽  
Yonghui Xia ◽  
Guangli Li ◽  
...  

Control and detection of sunset yellow is an utmost demanding issue, due to the presence of potential risks for human health if excessively consumed or added. Herein, cuprous oxide-electrochemically reduced graphene nanocomposite modified glassy carbon electrode (Cu2O-ErGO/GCE) was developed for the determination of sunset yellow. The Cu2O-ErGO/GCE was fabricated by drop-casting Cu2O-GO dispersion on the GCE surface following a potentiostatic reduction of graphene oxide (GO). Scanning electron microscope and X-ray powder diffractometer was used to characterize the morphology and microstructure of the modification materials, such as Cu2O nanoparticles and Cu2O-ErGO nanocomposites. The electrochemical behavior of sunset yellow on the bare GCE, ErGO/GCE, and Cu2O-ErGO/GCE were investigated by cyclic voltammetry and second-derivative linear sweep voltammetry, respectively. The analytical parameters (including pH value, sweep rate, and accumulation parameters) were explored systematically. The results show that the anodic peak currents of Cu2O-ErGO /GCE are 25-fold higher than that of the bare GCE, due to the synergistic enhancement effect between Cu2O nanoparticles and ErGO sheets. Under the optimum detection conditions, the anodic peak currents are well linear to the concentrations of sunset yellow, ranging from 2.0 × 10−8 mol/L to 2.0 × 10−5 mol/L and from 2.0 × 10−5 mol/L to 1.0 × 10−4 mol/L with a low limit of detection (S/N = 3, 6.0 × 10−9 mol/L). Moreover, Cu2O-ErGO/GCE was successfully used for the determination of sunset yellow in beverages and food with good recovery. This proposed Cu2O-ErGO/GCE has an attractive prospect applications on the determination of sunset yellow in diverse real samples.


2020 ◽  
Vol 185 ◽  
pp. 66-70
Author(s):  
Feng Guo ◽  
Pengfei Wen ◽  
Bo Duan ◽  
Yao Li ◽  
Xilong Zhou ◽  
...  

Author(s):  
Xiaoyu Zhou ◽  
Xiaoli Zhao ◽  
Shuo Gu ◽  
Kaiyue Gao ◽  
Fazhi Xie ◽  
...  

Integrating chemical enhancement (CM) and electromagnetic enhancement (EM) into one substrate is of great significance, but as far as we know, little research has been done on this project. In...


2017 ◽  
Vol 5 (26) ◽  
pp. 13544-13556 ◽  
Author(s):  
Yuezhan Feng ◽  
Ji Hu ◽  
Yang Xue ◽  
Chengen He ◽  
Xingping Zhou ◽  
...  

A synergistic enhancement effect of PFR-fRGO and Al2O3 on the flame resistance and thermal conductivity of epoxy-based composites.


2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Yuxiang Huang ◽  
Yue Qi ◽  
Yahui Zhang ◽  
Wenji Yu

At present, China is the world's largest producer of bamboo resource possessor and bamboo processing. The main processing method of bamboo recombination technology is rolling and compaction, by which a reconstituted material with bamboo fibrotic veneer as matrix and phenolic resin as reinforcement is prepared. It has excellent physical and mechanical properties and can replace high-quality wood to manufacture various engineering structural materials and building decoration materials. This paper reviewed the research process and progress of bamboo recombination technology, the existing technical problems and prospects, in order to provide references for future research on bamboo recombination theory and production practice. In recent years, as a new material with controllable properties, designable structures, and adjustable dimensions, bamboo reconstituted materials have been comprehensively studied from the aspects of pressing process parameters, physicochemical mechanical properties evaluation system, and microstructure characterization, but the research is not comprehensive and has not in-depth view. In the future, the relationship between microstructure and performance should be emphatically studied to clarify the law of mechanical performance change and ultimate mechanical performance under synergistic enhancement effect, as well as the performance change and interface formation of the resin during the entire molding process. Meanwhile, the reliability and relevance of applied research should be further expanded, and the integration of natural and artificial aging environment, process and performance, and macro- and microscales should be strengthened.


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