本文選題：納米顆粒 + 非晶態(tài)��； 參考：《蘭州大學(xué)》2015年碩士論文

【摘要】：非晶碳納米顆粒因具有良好的熒光性能、生物相容性及低毒性等特性,所以在生物成像、光催化、生物傳感等方面有巨大的潛在應(yīng)用前景。本論文探索了非晶碳納米顆粒的制備、表征及其性質(zhì),具體內(nèi)容如下：(1)以葡萄糖為原料,通過水熱法,制備了顆粒尺寸較小、尺寸分布較窄、形貌近球形、分散的非晶碳納米顆粒。通過EDS、FTIR、 Raman分析,可以得出樣品的主要組成是C、O,且含有羧基、羥基等含氧官能團(tuán)；通過XRD和SAED分析,得出樣品為非晶態(tài)。由此可知,所制備的樣品為非晶碳納米顆粒；(2)通過TEM分析,可以得知制備得到樣品為球形形貌且分散性較好；研究了制備非晶碳納米顆粒的主要影響因素：反應(yīng)溫度、反應(yīng)時(shí)間及葡萄糖溶液的濃度。隨著反應(yīng)溫度的升高(160℃-190℃),制備出的非晶碳納米顆粒尺寸減小,反應(yīng)溫度達(dá)到200℃時(shí),樣品出現(xiàn)晶化；隨著反應(yīng)時(shí)間的增長(3-5 h),制備出的非晶碳納米顆粒尺寸減小,反應(yīng)時(shí)間達(dá)到6h時(shí),樣品中出現(xiàn)尺寸較大的團(tuán)聚體；隨著葡萄糖溶液濃度的增大(0.05-0.15 mol/L),制備出的非晶碳納米顆粒尺寸減小,葡萄糖溶液濃度達(dá)到0.2 mol/L時(shí),樣品中出現(xiàn)尺寸較大的團(tuán)聚體。最后通過實(shí)驗(yàn)對(duì)比分析得出了最優(yōu)實(shí)驗(yàn)條件：c(C6H12O6·H2O)為0.15mol/L、反應(yīng)時(shí)間5 h、反應(yīng)溫度190℃；(3)通過UV-Vis分析,可以得到非晶碳納米顆粒的電子結(jié)構(gòu)與有機(jī)發(fā)光材料的電子結(jié)構(gòu)更接近。
[Abstract]:Because of its good fluorescence properties, biocompatibility and low toxicity, amorphous carbon nanoparticles have great potential applications in biological imaging, photocatalysis, biosensor and so on. In this paper, the preparation, characterization and properties of amorphous carbon nanoparticles were investigated. The main contents were as follows: (1) using glucose as raw material, the size of amorphous carbon nanoparticles was smaller, the size distribution was narrow, and the morphology was nearly spherical, by hydrothermal method. Dispersed amorphous carbon nanoparticles. By means of EDS-FTIR and Raman analysis, it can be concluded that the main composition of the sample is Con O, with oxygen functional groups such as carboxyl group and hydroxyl group, and that the sample is amorphous by XRD and SAED analysis. It can be seen that the prepared samples are amorphous carbon nanoparticles. By TEM analysis, it can be known that the prepared samples are spherical in morphology and good in dispersity, and the main factors influencing the preparation of amorphous carbon nanoparticles are as follows: reaction temperature. Reaction time and concentration of glucose solution. With the increase of reaction temperature, the size of amorphous carbon nanoparticles decreased, and when the reaction temperature reached 200 鈩，

本文編號(hào)：1983974