【摘要】：在不使用還原劑的前提下,采用水熱法,以聚乙烯吡咯烷酮為保護(hù)劑,經(jīng)高溫?zé)岱纸馓妓徙y制得銀納米顆粒,并通過單因素試驗(yàn)優(yōu)選出水熱反應(yīng)時(shí)間為5 h、水熱反應(yīng)溫度180℃、表面活性劑聚乙烯吡咯烷酮用量為1.74 g、硝酸銀濃度為0.1 mol/L以及沉淀劑選用碳酸氫鈉,用量為30 m L。用場發(fā)射掃描電子顯微鏡(SEM)、熱失重分析儀(TG-DSC)、X射線衍射(XRD)和紫外可見分光光度儀對(duì)制備產(chǎn)物的表征結(jié)果表明,所得納米銀粉呈球形、三角和短棒狀,具有面心立方結(jié)構(gòu),平均粒徑在40~60 nm之間,在經(jīng)過氧化氫處理后其紫外可見吸收光譜出現(xiàn)明顯的鈍化和藍(lán)移。
[Abstract]:Without reducing agent, silver nanoparticles were prepared by hydrothermal method with polyvinylpyrrolidone as protective agent and silver carbonate was decomposed at high temperature. The thermal reaction time of the effluent was optimized for 5 h by single factor test. The hydrothermal reaction temperature is 180 鈩，

本文編號(hào)：2372611