本文關(guān)鍵詞：銅基硫族納米材料的可控合成及其在生化分析中的應(yīng)用　出處：《西南大學(xué)》2015年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 銅基硫族納米材料 局域等離子共振 樹突狀 催化劑 酶活性 三元合金

【摘要】：銅基硫族納米材料因其優(yōu)越的光學(xué)、電學(xué)、熱學(xué)及其它物理化學(xué)性質(zhì),在多個領(lǐng)域被廣泛研究。隨著納米技術(shù)的飛速發(fā)展,二元銅基硫族納米材料將來可能被廣泛應(yīng)用于催化、電化學(xué)、能源、醫(yī)療診斷等領(lǐng)域。因此,探索研究多功能銅基硫族納米材料的高效合成方法及應(yīng)用具有一定的實際意義和價值。目前,銅基硫族納米材料的研究還處于初始階段,主要集中在多功能納米材料的合成和性質(zhì)探索方面,整體屬于基礎(chǔ)研究范疇。但其中使用最多的合成方法及合成材料的性質(zhì)仍存在一些缺陷,例如犧牲模板法存在模板難以完全去除、耗時、成本高、過程復(fù)雜及合成的材料催化活性低等缺陷。所以,本文以不同形狀銅基硫族納米材料的合成及應(yīng)用研究為目的,針對目前已有的合成方法及性質(zhì)的不足開展以下研究內(nèi)容：1.建立一個新穎、簡單、快速、高效、可控的低溫常壓溶劑法,用于合成凹面CuS材料。分別對影響材料結(jié)構(gòu)、大小及形貌的因素進行分析,結(jié)果發(fā)現(xiàn)通過調(diào)節(jié)反應(yīng)條件可以實現(xiàn)不同形貌和大小CuS材料的可控合成；在此基礎(chǔ)上通過時間相關(guān)的掃描電鏡圖像分析,提出了一個凹面CuS材料的可能形成機理；然后通過對亞甲藍的催化降解及動力學(xué)研究,證實了我們合成的CuS材料具有極強的催化活性。2.在經(jīng)典模板協(xié)助高壓法的基礎(chǔ)上,建立一個新穎的模板協(xié)助常壓低溫一鍋水熱法。采用該方法,我們成功合成了空心多孔CuS納米球,并且對影響納米球大小、形貌及分散性的因素,如反應(yīng)溫度、時間、還原劑量等進行分析,發(fā)現(xiàn)空心多孔CuS納米球可以實現(xiàn)多通道可控合成。還發(fā)現(xiàn)該方法具有簡單、可控、安全、經(jīng)濟等優(yōu)點,可以實現(xiàn)大批量合成。然后將合成的空心多孔CuS納米球用于催化氧化TMB的酶活性研究,結(jié)果證實該材料具有優(yōu)良的過氧化物酶活性。進一步將其用于葡萄糖的檢測,結(jié)果表明該方法線性范圍寬,適合于大濃度葡萄糖的分析。最后通過比較發(fā)現(xiàn),我們合成的空心多孔CuS納米材料的酶催化活性遠遠優(yōu)于已報道的相關(guān)CuS材料。3.三元CuSySe1-y合金多孔材料的合成、表征及性質(zhì)探索。研究包含三個方面內(nèi)容：1)通過自己建立的模板水熱法,首先成功合成了三元CuSySe1-y合金多孔材料,并對其進行詳細的表征。2)分別對影響材料粒徑大小、形貌、分散性及均勻性的因素進行分析,結(jié)果發(fā)現(xiàn)反應(yīng)溫度、NaOH和還原劑量分別為50℃、550μmo1和100 μmol時,合成的三元CuSySe1-y合金多孔材料具有較好的形貌、分散性及均勻性。3)合成的三元合金多孔材料具有較好的局域等離子共振性質(zhì),通過改變S／Se摩爾比例,實現(xiàn)近紅外局域等離子共振吸收從1027到1400 nm寬度可調(diào),同時帶隙從1.42到1.91 eV也對應(yīng)可調(diào)。該研究為三元CuSySe1-y合金材料在光熱治療和光電轉(zhuǎn)換方面的應(yīng)用提供理論基礎(chǔ)。4.樹突狀Cu20模板和Cu1-xSySe1-y合金納米材料的合成及其在雙氧水分析中的應(yīng)用。通過簡單的常壓低溫模板水熱法,我們首先成功合成了樹突狀Cu20模板和Cu2-xSySe1-y合金納米材料,并對其進行詳細的表征。然后對影響材料粒徑大小和形貌的因素分別進行分析,發(fā)現(xiàn)NaOH的量和反應(yīng)溫度對樹突狀Cu2-xSySe1-y合金納米材料形貌和大小影響較大,而葡萄糖和還原劑的量影響較小。進一步通過時間相關(guān)的掃描電鏡觀察方式,重點研究了樹突狀Cu20模板的形成機理。最后將合成的Cu2-xSySe1-y合金納米材料應(yīng)用于雙氧水的分析檢測。總之,本文以不同形狀銅基硫族納米材料的合成為起點,以掃描電鏡圖片和吸收光譜為主要研究手段,探索新穎簡單的合成方法及應(yīng)用。
[Abstract]:Copper based chalcogenide nano materials because of its excellent optical, electrical, thermal and other physical and chemical properties, has been widely studied in many fields. With the rapid development of nanotechnology, two yuan of copper based chalcogenide nanomaterials may have been widely used in catalysis, electrochemistry, energy field, medical diagnosis and so on. Therefore, exploration has certain practical significance and value of efficient synthesis method of multifunctional copper based chalcogenide nano materials and application. At present, the research of copper based chalcogenide nano materials is still in the initial stage, mainly concentrated in the exploration of synthesis and properties of multifunctional nano materials, the overall belongs to the basic research category. But the nature of the use of the most the synthesis and materials, there are still some shortcomings, such as sacrificial template method is difficult to completely remove the template, time-consuming, high cost, complex process and synthetic materials. So the catalytic activity of low defect In this paper, the aim is to study the synthesis and application of different shapes of copper based chalcogenide nano materials, carry out the following research contents in view of the current shortage of the existing synthesis methods and properties: 1. to establish a novel, simple, fast, efficient, low temperature and low pressure solvent control, for a concave CuS material. Influence of materials the structure, size and morphology of factor analysis, the results found by adjusting the reaction conditions can achieve the controllable synthesis of different morphology and size of CuS material; scanning electron microscopy image analysis by the time related on the basis of this, put forward a concave CuS material formation; then through the research on the photocatalytic degradation of methylene blue and kinetics we confirmed, the synthesis of CuS based material has a strong catalytic activity of.2. assisted high pressure method in the classical template, create a new template to assist a low temperature The pot hydrothermal method. Using this method, we successfully synthesized porous hollow CuS nanospheres, and the influence of nanoparticle size, morphology and dispersion of the factors, such as reaction temperature, time and dose reduction were analyzed, found that porous hollow CuS nanospheres can realize multichannel controllable synthesis. This method is also found simple, controllable, safe, economic and other advantages, can realize batch synthesis. Then porous hollow CuS nanospheres synthesized for the study of enzyme activity in the catalytic oxidation of TMB, results show that the material has excellent peroxidase activity. Further used for the detection of glucose, the results show that this method has wide linear range, analysis suitable for high concentration glucose. Finally, by comparison, enzyme catalytic activity we synthesized hollow porous CuS nano material is much better than that of CuS material.3. reported three yuan CuSySe1-y alloy porous material The synthesis, characterization and properties of exploration. Research includes three aspects: 1) through the build template hydrothermal method, the first successful synthesis of materials three yuan of porous CuSySe1-y alloy were characterized with.2, respectively) on its influence on the material particle size, morphology, dispersion and uniformity factor the analysis results showed that the reaction temperature, NaOH and reducing doses were 50 DEG C, 550 mo1 and 100 mol, three yuan CuSySe1-y alloy synthesized porous materials has good morphology, dispersibility and uniformity of.3) three alloys synthesized porous materials with good properties of local plasmon resonance, by changing the the S / Se molar ratio, the near infrared plasmon resonance absorption from 1027 to 1400 nm and the band gap width is adjustable from 1.42 to 1.91 eV is adjustable. The corresponding research is three yuan CuSySe1-y alloy in photothermal therapy and photoelectric conversion To provide theoretical basis of.4. synthesis of dendritic Cu20 template and Cu1-xSySe1-y alloy nano material and its application in the analysis of hydrogen peroxide in the application. Through a simple template under atmospheric pressure and low temperature hydrothermal method, we successfully synthesized dendritic Cu20 template and Cu2-xSySe1-y alloy nano materials, and a detailed characterization of the materials. Then influence factors on particle size and morphology were analyzed, found that the influence of the amount of NaOH and reaction temperature of Cu2-xSySe1-y alloy nano materials on dendritic morphology and size is larger, and the glucose and reducing agent was less affected. Scanning electron microscopy further through time related observation, focus on the formation mechanism of dendritic Cu20 template. The detection and analysis of synthesis Cu2-xSySe1-y alloy nano materials used in hydrogen peroxide. In short, according to the different shapes of copper based chalcogenide nanomaterials synthesis Starting from the scanning electron microscope picture and absorption spectrum as the main research means, a novel and simple synthesis method and application are explored.

【學(xué)位授予單位】：西南大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TB383.1

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本文編號：1373939