本文選題：聚吡咯 + 硫化鎘　； 參考：《蘇州科技學(xué)院》2015年碩士論文

【摘要】：作為典型的本征型導(dǎo)電聚合物,聚毗咯(PPy)具有合成簡(jiǎn)單、導(dǎo)電性能好、不易被氧化、熱穩(wěn)定性能高等特點(diǎn),備受研究人員關(guān)注。PPy已被廣泛應(yīng)用在二次電池、生物感應(yīng)器、非線性光學(xué)裝置、電致變色顯示器、功能分子膜等領(lǐng)域。聚吡咯／納米半導(dǎo)體復(fù)合物兼具PPy和納米粒子的性能,有待深入研究與應(yīng)用。本文合成了PPy/CdS復(fù)合材料,著重研究其光電和吸附性能。(1)通過(guò)界面聚合-原位法制備了PPy/CdS復(fù)合薄膜材料,用紅外光譜(FTIR)、掃描電鏡(SEM-EDAX)、X射線衍射(XRD)、熱重分析(TGA)、紫外吸收(UV-vis)等方法對(duì)產(chǎn)物進(jìn)行了表征。制備的PPy/CdS薄膜結(jié)構(gòu)平整,投料比對(duì)CdS納米棒尺度有明顯影響。Z-掃描技術(shù)(Z-scan)研究結(jié)果表明,PPy/CdS的三階非線性光學(xué)(NLO)性質(zhì)表現(xiàn)為飽和吸收和非線性負(fù)折射。PPy/CdS (10:1)薄膜的非線性折射率是PPy薄膜的2.4倍,三階非線性極化率是PPy的2.1倍。該復(fù)合材料在光限幅等光電領(lǐng)域具有潛在的應(yīng)用價(jià)值。(2)研究了PPy/CdS復(fù)合物光催化降解亞甲基藍(lán)的特性。與CdS相比,PPy/CdS復(fù)合物具有較高的光催化效率,亞甲基藍(lán)的初始濃度、反應(yīng)時(shí)間、催化劑用量、pH值、反應(yīng)溫度等因素影響光催化降解效率。當(dāng)亞甲基藍(lán)的濃度為5mg/L,PPy/CdS復(fù)合物的用量為15g/L,溶液的pH值為7左右,反應(yīng)時(shí)間為15min,光強(qiáng)度為200W時(shí),PPy/CdS對(duì)亞甲基藍(lán)的光催化降解率可達(dá)到97.51%。(3)用PPy及其復(fù)合材料去除水中的Cr(Ⅵ)。探討了pH值、溫度、吸附時(shí)間、Cr(Ⅵ)濃度、PPy用量對(duì)Cr(Ⅵ)去除效率的影響。PPy／玻璃纖維膜器件對(duì)Cr(Ⅵ)具有更好的去除效果,當(dāng)Cr(Ⅵ)的初始濃度為50mg/L,pH值為3,PPy的用量為6 g/L,反應(yīng)時(shí)間為15min時(shí),Cr(Ⅵ)的去除率為82.5%。
[Abstract]:As a typical intrinsic conductive polymer, Polymeric pyrrolidone (PPy) has been widely used in secondary batteries and biosensors for its advantages of simple synthesis, good conductivity, low oxidation resistance and high thermal stability. Nonlinear optical device, electrochromic display, functional molecular film and other fields. The polypyrrole / nanometer semiconductor composite has the properties of both PPy and nanoparticles, so it needs further research and application. In this paper, PPy/CdS composite materials were synthesized, and the optoelectronic and adsorption properties of PPy/CdS composite films were studied. (1) PPy/CdS composite films were prepared by interfacial polymerization-in-situ method. The products were characterized by FTIR, SEM, SEM, TGA, UV-vis). The products were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and UV-vis-vis (UV-vis). The structure of the prepared PPy/CdS thin films is flat, The results show that the third-order nonlinear optical properties of CdS / CdS are saturated absorption and nonlinear negative refraction. The nonlinear refractive index of PPy thin films is 2.4 times that of PPy thin films. The third order nonlinear polarizability is 2.1 times higher than that of PPy. The composite has potential application value in optoelectronic fields such as optical limiting, etc.) the photocatalytic degradation of methylene blue by PPy/CdS complex has been studied. Compared with CdS, the Py / CDs complex has higher photocatalytic efficiency. The initial concentration of methylene blue, reaction time, the amount of catalyst and pH value, the reaction temperature and other factors affect the photocatalytic degradation efficiency. When the concentration of methylene blue was 5 mg 路L ~ (-1) / L ~ (-1), the dosage of PPy-CdS complex was 15 g / L, the pH value of solution was about 7, the reaction time was 15 min and the light intensity was 200 W, the photocatalytic degradation rate of methylene blue could reach 97.51% with PPy and its composite material. The effects of pH value, temperature, adsorption time and concentration of PPy on the removal efficiency of Cr (鈪，

本文編號(hào)：1809904