本文關(guān)鍵詞： 納米材料 重金屬Ni(II) 功能化GO PDA-Au 對硝基苯酚 催化 二硫化鎢 適配體 前列腺抗原　出處：《曲阜師范大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：納米材料由于其特別的化學(xué)和物理性質(zhì)而在許多新領(lǐng)域得到了應(yīng)用,比如生物傳感、臨床診斷、環(huán)境監(jiān)測、污水處理等。納米材料種類繁多,有的易于修飾和改性,有的可以結(jié)合生活性分子,有的可以用于抗癌藥物傳遞�；诩{米材料的多樣性、多功能性,備受研究者矚目。本文利用納米材料獨特的性質(zhì),將其運用到環(huán)境、催化和腫瘤標志物的檢測,工作內(nèi)容如下:(1)合成了EDTA-GO和amine-GO,將其用于廢水中重金屬Ni(II)的去除。GO是基于Hummer’s方法直接將石墨氧化獲得。EDTA-GO和amine-GO是經(jīng)過硅烷化處理制備,合成過程簡單,條件溫和。文章中還將其吸附能力與活性炭、GO進行比較,實驗證明,EDTA-GO和amine-GO有更好的吸附能力,主要是因為EDTA-GO和amine-GO表面官能團可以與Ni(II)螯合。還開展了EDTA-GO和amine-GO對Ni(II)的解吸實驗,證明EDTA-GO和amine-GO經(jīng)過鹽酸處理,可以有效的實現(xiàn)Ni(II)的解吸。綜上,EDTA-GO和amine-GO有較好的吸附-解吸能力,可以再循環(huán)利用。(2)二硫化鎢納米片是一類二維平面結(jié)構(gòu)的材料,有吸附單鏈DNA和熒光猝滅的能力,可以用來構(gòu)建熒光器用于生物分子的檢測。基于此,設(shè)計了二硫化鎢與標有FAM熒光團的前列腺抗原Aptamer構(gòu)成的傳感器,用于PSA的檢測,檢測的線性范圍0-50 ng/m L,檢測限0.04 ng/m L。(3)本實驗通過水熱法合成Fe3O4納米磁珠作為載體,利用多巴胺(PDA)易在固體材料表面自發(fā)聚合的特性,在Fe3O4形成聚多巴胺薄膜,得到一種核殼型的四氧化三鐵聚多巴胺納米粒子(Fe3O4@PDA)。利用聚多巴胺同時作為還原劑和偶聯(lián)劑,將金納米顆粒直接從氯金酸溶液中還原出來,負載在納米球的表面,得到金納米催化劑(Fe3O4@PDA-Au)。進一步,酸洗掉Fe3O4,得到多巴胺-納米金空殼納米球(PDA-Au)。沉積了金的納米催化劑在對硝基苯酚進行還原時顯示出了高度的催化活性。
[Abstract]:Nanomaterials have been applied in many new fields because of their special chemical and physical properties, such as biosensor, clinical diagnosis, environmental monitoring, sewage treatment and so on. There are many kinds of nanomaterials. Some are easy to modify and modify, some can combine bioactive molecules, others can be used for anti-cancer drug delivery, based on the diversity of nanomaterials, multi-functional. In this paper, the unique properties of nanomaterials are used in the detection of environmental, catalytic and tumor markers. The job is as follows: 1) synthesizing EDTA-GO and amine-GO. It was used for heavy metal Ni2 in wastewater. The removal of .go is based on the direct oxidation of graphite by Hummer's. EDTA-GO and amine-GO are prepared by silanization. The synthesis process is simple and the conditions are mild. In this paper, the adsorptive capacity of EDTA-GO and amine-GO is compared with that of activated carbon (GGO), and it is proved that EDTA-GO and amine-GO have better adsorption ability. This is mainly due to the fact that the surface functional groups of EDTA-GO and amine-GO can chelate with nio II. EDTA-GO and amine-GO pairs of nio II are also carried out. The desorption experiment. It is proved that EDTA-GO and amine-GO can be desorbed effectively by hydrochloric acid treatment. EDTA-GO and amine-GO have good adsorption-desorption ability and can be recycled. Tungsten disulfide nanocrystals are a kind of two-dimensional planar structure materials. It has the ability of adsorbing single-stranded DNA and fluorescence quenching, which can be used to construct fluorescence apparatus for the detection of biomolecules. A sensor composed of tungsten disulfide and prostatic antigen Aptamer labeled with FAM fluorescent group was designed. The sensor was used for the detection of PSA. The linear range of detection was 0-50 ng/m / L. The detection limit was 0.04 ng/m / L ~ (3)) in this experiment, Fe3O4 nanomagnetic beads were synthesized by hydrothermal method as the carrier, and the spontaneous polymerization of Fe3O4 on the surface of solid materials was achieved by using dopamine. A core-shell poly (dopamine tetraoxide) nanoparticles (Fe3O4Fe3O4PDA-PDAA) were obtained by forming polydopamine films at Fe3O4. The polydopamine was used as both a reductant and a coupling agent. Gold nanoparticles were reduced directly from chlorgold acid solution and loaded on the surface of the nanospheres to obtain gold nanoparticles catalyst Fe _ 3O _ 4 @ PDA-Au-O. Furthermore, Fe3O4 was washed out by acid. The dopamine-nano-gold shell nanospheres PDA-Auhl were obtained. The gold deposited nanocatalysts showed high catalytic activity in the reduction of nitrophenol.
【學(xué)位授予單位】：曲阜師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ127.11;TB383.1

【參考文獻】

相關(guān)期刊論文 前1條

1 劉娟;楊青林;徐晶晶;劉克松;郭林;江雷;;仿壁虎和貽貝黏附材料[J];化學(xué)進展;2012年10期

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