Synthesis and surface applications of Copper oxide nanoparticles

• Main Authors: Pei-chuan Tsai, 蔡佩娟
• Other Authors: Shu-chen Hsieh
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/37311060881574140650

碩士 === 國立中山大學 === 化學系研究所 === 101 === CuO is a narrow band gap p-type semiconductor and has been recognized as an essential material for diverse practical applications, including catalysis, batteries, magnetic storage media, solar energy conversion, gas sensing, and field emission. In recent years, copper oxide reported by different synthetic methods with different shapes and sizes, for example: nanorods, nanowires, nanotubes ... and so on. In this experiment, we synthesize copper oxide precursor by using the precipitation method and then treated by plasma to convert it into copper oxide. XRD、XPS and TEM were used to characterize the structure. Copper oxide will be applied to the two parts in this article. The first part, copper oxide were used as a heterogeneous Fenton-like catalyst to degrade methylene blue, and a UV spectrometer monitor the heterogeneous Fenton-like reaction. The generated products are monitored by a mass spectrometer during the reaction. We find the optimal reaction conditions by adjusting the initial pH of aqueous solution. Experimental results show the optimum reaction conditions were pH value between 5 to11. Raman spectroscopy is used for surface science. Recently, Surface-enhanced Raman Scattering （SERS） in surface science become an important and interesting technology. The second part of the experiment, we synthesized Ag / CuO particles as SERS substrate by adjusting the concentration of silver nitrate and reaction time. In our work, 4-ATP was selected as the probe molecule to investigate the SERS properties of the obtained substrates. Compared to pure copper oxide or pure silver as SERS substrates, Ag/CuO particles can effectively enhance the ATP signal, and the detection limit of up to 10-5 M.