本文選題：氧化亞錫 + 二氧化錫�。� 參考：《昆明理工大學》2017年碩士論文

【摘要】：隨著社會的發(fā)展和工業(yè)化進程的繼續(xù),能源緊缺和環(huán)境保護向人類提出了嚴峻的挑戰(zhàn)。光催化反應具有無毒、高效、無二次污染等優(yōu)點,是解決能源和環(huán)境問題的一種重要途徑。本論文系統(tǒng)的介紹了目前光催化技術的基本原理和應用,然后詳細的闡述了氧化亞錫(SnO)、氧化亞錫/二氧化錫(SnO/SnO_2)、聚苯胺/二氧化錫(PANI/SnO_2)三類光催化材料的制備,并采用XRD、SEM、TEM、UV-Vis、XPS、PL以及光催化降解實驗等檢測手段對合成的光催化材料的結構、形貌以及光催化性能、光催化機理等進行了研究。主要研究內容如下:1、以SnCl_2·2H_2O和NaOH為原料采用水熱法制備SnO,通過控制溶劑的配比來合成不同形貌的SnO,同時對不同形貌的SnO進行XRD、SEM、TEM等表征和甲基橙(MO)的光催化活性測試。光催化實驗結果表明花球狀SnO的光催化活性比方片狀SnO的光催化活性高1.5倍。光催化機理研究表明花球狀SnO光催化性能增強主要原因:花球狀形貌導致入射光子在材料表面多次反射,增加了對光子的吸收。2、以SnCl_2·2H_2O、SnCl_4·5H_2O和氨水為原料采用水熱法,通過對原料的比例控制合成了異質結結構的SnO/SnO_2,改性后光催化活性得到較大的提升。在對MO的光催化活性測試中發(fā)現(xiàn):當SnO:SnO_2=1:1時,SnO/SnO_2的光催化活性最佳,在20 min內MO降解率達到99.8%。光催化機理研究表明異質結結構抑制SnO/SnO_2光生電子空穴對的復合,顯著地增強了光催化性能。3、以花球狀SnO_2和導電PANI為原料,制備了不同復合比例的球狀PANI/SnO_2復合光催化材料。通過對PANI/SnO_2復合光催化劑進行XRD、SEM、TEM、FR等表征和MO的光催化活性測試。光催化實驗表明,PANI能顯著提高SnO_2微球的光催化活性,其光催化降解MO的反應符合準一級動力學規(guī)律。1%PANI/SnO_2能較好的實現(xiàn)電子-空穴對的分離,光催化活性最高。PL測試結果證明,PANI能抑制光生電子空-穴對的復合,從而提高其光催化性能。
[Abstract]:With the development of society and the process of industrialization, energy shortage and environmental protection have posed severe challenges to human beings. Photocatalytic reaction has the advantages of non-toxicity, high efficiency and no secondary pollution. It is an important way to solve energy and environmental problems. In this paper, the basic principle and application of photocatalytic technology are introduced systematically, and then the preparation of three kinds of photocatalytic materials, tin oxide / SnO / SnO _ 2, Polyaniline / tin dioxide / PANI- / SnO-2, are described in detail. The structure, morphology, photocatalytic properties and photocatalytic mechanism of the synthesized photocatalytic materials were studied by means of XRDX, SEMX, UV-VisTX, XPS PL and photocatalytic degradation experiments. The main contents are as follows: (1) Sno was prepared by hydrothermal method using SnCl_2 2H_2O and NaOH as raw materials. Sno with different morphologies was synthesized by controlling the proportion of solvent. The SnO with different morphologies was characterized by XRDX SEM Tem and the photocatalytic activity of methyl orange moths was tested. The photocatalytic activity of flower spherical SnO was 1.5 times higher than that of flake SnO. The study of photocatalytic mechanism shows that the main reason for the enhancement of photocatalytic performance of spherical SnO is that the spherical morphology of the flower leads to multiple reflection of incident photons on the surface of the material and increases the absorption of photons. The hydrothermal method is used to use SnCl_2 _ 2H _ 2O _ 2SnCl _ 4 5H_2O and ammonia water as raw materials. Sno / SnOs _ 2 with heterojunction structure was synthesized by controlling the proportion of the raw materials, and the photocatalytic activity of the modified Sno / SnO _ s _ 2 was greatly improved. In the photocatalytic activity test of MO, it was found that the photocatalytic activity of Sno / SnO-2 was the best when SnO:SnO_2=1:1 was used, and the degradation rate of MO reached 99.8% within 20 min. The photocatalytic mechanism showed that the heterojunction structure inhibited the photocatalytic properties of SnO/SnO_2 photogenerated electron hole pairs, and significantly enhanced the photocatalytic activity of .3.The spherical PANI/SnO_2 composite photocatalytic materials with different ratios were prepared by using spherical SnO_2 and conductive PANI as raw materials. The PANI/SnO_2 composite photocatalyst was characterized by XRDX SEMX TEMN FR and the photocatalytic activity of MO was tested. The photocatalytic experiments showed that the photocatalytic activity of SnO_2 microspheres was significantly improved by pani. The photocatalytic degradation of MO was in accordance with the quasi-first-order kinetic law. 1 / SnO2 could achieve the separation of electron-hole pairs. The photocatalytic activity of pani was the highest. The results showed that pani could inhibit the combination of photogenerated electron voids and holes and thus improve its photocatalytic performance.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：O643.36

【參考文獻】

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1 Wei Zhang;Tianhua Zhou;Jindui Hong;Rong Xu;;MoS_3 loaded TiO_2 nanoplates for photocatalytic water and carbon dioxide reduction[J];Journal of Energy Chemistry;2016年03期

2 付伯艷;謝漢文;;氧化亞錫晶體的可控合成研究進展[J];廣州化工;2016年09期

3 李偉;馬建林;胡洋;張建國;;氧化亞錫廢渣制備二氧化錫的方法研究[J];云南化工;2016年01期

4 杜聰聰;李石;;PANI-TiO_2光催化劑的制備及其降解甲基橙的性能[J];化工環(huán)保;2016年01期

5 崔永奎;王鳳平;祖柏兒;李巖;王子婭;李泉水;;新型層狀結構SnO的合成、光學性質及其表面缺陷[J];半導體光電;2015年05期

6 聶發(fā)輝;劉榮榮;張慧敏;劉占孟;;新型高級氧化技術處理硫化染料廢水的研究進展[J];化工環(huán)保;2015年05期

7 劉家琴;吳玉程;;基于BiOX(X=Cl、Br、I)新型高性能光催化材料的最新研究進展[J];無機材料學報;2015年10期

8 馬楷;曹毅;梅莉;劉月v，

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