论文资料-钨酸盐论文：含钨、钼氧化物的微波辅助合成及性能研究.doc

螆膃膂蚆蚂膂芄蒈羀膁莇蚄袆膀葿蒇螂腿腿蚂蚈袆芁蒅薄袅莃蚀袃袄肃蒃衿袃芅蝿螅袂莇薂蚁袁蒀莄罿袁腿薀袅袀节莃螁罿莄薈蚇羈肄莁薃羇膆薆羂羆莈荿袈羅蒁蚅螄羅膀蒈蚀羄芃蚃薆羃莅蒆袄肂肅蚁螀肁膇蒄蚆肀艿蚀薂聿蒁蒂羁聿膁莅袇肈芃薁螃肇莆莃虿肆肅蕿薅膅膈莂袄膄芀薇螀膃莂莀螆膃膂蚆蚂膂芄蒈羀膁莇蚄袆膀葿蒇螂腿腿蚂蚈袆芁蒅薄袅莃蚀袃袄肃蒃衿袃芅蝿螅袂莇薂蚁袁蒀莄罿袁腿薀袅袀节莃螁罿莄薈蚇羈肄莁薃羇膆薆羂羆莈荿袈羅蒁蚅螄羅膀蒈蚀羄芃蚃薆羃莅蒆袄肂肅蚁螀肁膇蒄蚆肀艿蚀薂聿蒁蒂羁聿膁莅袇肈芃薁螃肇莆莃虿肆肅蕿薅膅膈莂袄膄芀薇螀膃莂莀螆膃膂蚆蚂膂芄蒈羀膁莇蚄袆膀葿蒇螂腿腿蚂蚈袆芁蒅薄袅莃蚀袃袄肃蒃衿袃芅蝿螅袂莇薂蚁袁蒀莄罿袁腿薀袅袀节莃螁罿莄薈蚇羈肄莁薃羇膆薆羂羆莈荿袈羅蒁蚅螄羅膀蒈蚀羄芃蚃薆羃莅蒆袄肂肅蚁螀肁膇蒄蚆肀艿蚀薂聿蒁蒂羁聿膁莅袇肈芃薁螃肇莆莃虿肆肅蕿薅膅膈莂袄膄芀薇螀膃莂莀螆膃膂蚆蚂膂芄蒈羀膁莇蚄袆膀葿蒇螂腿腿蚂蚈袆芁蒅薄袅莃蚀袃袄肃蒃衿袃芅蝿螅袂莇薂蚁袁蒀莄罿袁腿薀袅袀节莃螁罿莄薈蚇羈肄莁薃羇膆薆羂羆莈荿袈羅蒁蚅螄羅膀蒈蚀羄芃蚃薆羃莅蒆袄肂肅蚁螀肁膇蒄蚆肀艿蚀薂聿蒁蒂羁聿膁莅袇肈芃薁螃肇莆莃虿肆肅 钨酸盐论文：含钨、钼氧化物的微波辅助合成及性能研究【中文摘要】钨酸盐、钼酸盐及三氧化钨作为非常重要的无机功能材料,被广泛的应用于光致发光、激光、电致发光、光学器件、光催化、气敏元件等领域。这些功能材料如此广泛的应用前景,引起了广大材料研究者的兴趣。寻求新的高效快捷简便的合成方法也是材料研究的热点之一。由于微波具有加热速度快,容易控制,高效节能等优点,微波辅助合成法作为一个新型的合成方法被引入到本论文的研究工作中。本论文采用微波辅助合成法,方便快捷的合成了钨酸盐、钼酸盐和三氧化钨纳米粉体材料。通过调节反应温度或反应时间对产物的结晶度和形貌的变化进行了研究,并初步对其荧光性质或光催化性质进行了研究。第一章文献综述部分,简要的概述了纳米材料的产生、纳米材料的概念和特性,对钨酸盐、钼酸盐和三氧化钨的研究进展进行了简单介绍,而且还介绍了微波化学的产生及微波法在合成纳米材料工作中的新进展。第二章利用微波辅助合成法,方便快捷的合成了CdWO4、ZnWO4、BaWO4和CaWO4纳米粉体材料,并通过X-射线粉末衍射(XRD)、透射电镜(TEM)、扫描电镜(SEM)、紫外可见分光光度计(UV-vis)和荧光光度计(PL)等技术对样品的矿相、形貌和荧光性能进行了分析。研究表明：不同的反应温度或反应时间制备的样品的结晶性不同,产物的大小不同,其荧光强度和发射峰的位置也不同。另外还通过对不同条件制备的ZnWO4降解染料罗丹明B(RhB)的情况对其光催化性能进行了评估,实验研究表明：光催化性能与产物的结晶性、形貌和比表面积有关。第三章以钼酸钠(Na2MoO42H2O)和氯化钡(BaCl2)为原料利用微波辅助合成法成功制备了纳米粉体钼酸钡(BaMoO4)纳米颗粒,用X-射线粉末衍射(XRD)、扫描电镜(SEM)和荧光光度计(PL)等技术对样品的矿相、形貌和荧光性能进行了分析。研究表明：调节反应时间,纳米粉体样品的结晶性发生了变化,同时伴随着产物的形貌和荧光性质都发生了一定的改变。第四章以钨酸钠(Na2WO42H2O)和氯化钯(PdCl2)为原料成功制备了纳米粉体WO31/3H2O纳米颗粒,用X-射线粉末衍射(XRD)、透射电镜(TEM)和紫外可见分光光度计(UV-vis)等技术对样品的矿相、形貌和光催化性能进行了分析。研究表明：不同的反应温度制备的样品的结晶性不同。通过对WO31/3H2O降解染料罗丹明B(RhB)的脱色情况将其光催化性能进行了评估,结果表明：样品的结晶性、比表面积等因素对其光催化性能有一定的影响。【英文摘要】Tungstates, molybdates and tungsten trioxide are important functional materials which have been used in various fields, such as in optochromic, laser, electrochromic, photonic device, photocatalysis, gas sensor et al. More and more researchers are interested in the development of tungstates, molybdates and tungsten trioxide, due to their wide foregrounds of development. The interests of researcher in this field is focusing on development of new synthesis method. Microwave-assited synthesis has been introduced into this research due to its advantages of rapid kinetics, high efficiency, energy conservation, pollution-free, and so on. Here, we prepared tungstates, molybdates and tungsten trioxide nanostructure materials by microwave-assisted method. The reactant temperature and reactant time that affected on crystallinity and morphology of these nanostructure materials have been studied, and the PL and photocatalysis properties have been investagted.In the review of part 1, the origin, concepts and properties of nanostructure materials were introduced briefly. And introduced the development of tungstates, molybdates and tungsten trioxide. In addition, our paper briefly introduced the develpoment of microwave chemistry, its application in preparation of nanostructure materials.In the part 2, we have successfully synthesized CdWO4, ZnWO4, BaWO4, CaWO4 nanostructure materials by microwave-assisted method. The product obtained were characterized by using X-ray diffractometer (XRD), transmission electron microscope (TEM), scanning electron microscope (SEM), Ultraviolet and visible spectroscopy (UV-Vis) and photoluminescence spectra (PL), respectively. The results showed that the crystallinity and morphology of the products strongly relied on the reactant temperature and reactant time, and the PL properties of the prepared samples was relate to the crystallinity and morphology. The evaluation of photocatalysis activity of ZnWO4 for the photocatalytic decolorization of RhB aqueous solution was performed. The result showed that the activity of photocatalysis was affected by the crystallinity, morphology and surface area.In the part 3, BaMoO4 nanoparticles have been synthesized by microwave-assisted method and Na2MoO42H2O and BaCl2 were used as the staring materials. The prepared samples were characterized by using X-ray diffractometer (XRD), scanning electron microscope (SEM) and photoluminescence spectra (PL), respectively. The result suggested that the morphology and crystallinity were related to the rectant time. And the PL property of the product strongly relied on the crystallinity and morphology.In the part 4, WO31/3H2O nanoparticles has been synthesized by microwave-assisted method, Na2WO42H2O and PdCl2 as the staring materials. The prepared samples were characterized by using X-ray diffractometer (XRD), scanning electron microscope (SEM), photoluminescence spectra (PL) and UV-vis, respectively. The result implied that the morphology and crystallinity were affected by the reactant time and reactant temperture. The evaluation of photocatalysis activity of WO31/3H2O for decolorization of RhB aqueous solution was investageted. The result showed that the activity of photocatalysis was related to the crystallinity and surface area.【关键词】钨酸盐 钼酸盐 三氧化钨 微波辅助合成【英文关键词】tungstates molybdates tungsten trioxide microwave-assisted method【目录】含钨、钼氧化物的微波辅助合成及性能研究摘要4-5Abstract5-6第1章 绪论10-241.1 纳米材料简介10-131.1.1 纳米材料的概念10-111.1.2 纳米材料的特性11-131.2 钨酸盐、钼酸盐及三氧化钨材料概述131.2.1 钨酸盐、钼酸盐材料概述131.2.2 三氧化钨材料概述131.3 钨酸盐、钼酸盐及三氧化钨纳米材料研究进展13-171.3.1 钨酸盐、钼酸盐纳米材料研究进展13-161.3.2 三氧化钨纳米材料研究进展16-171.4 微波化学简介17-191.4.1 微波的基本概念17-181.4.2 微波化学181.4.3 微波加热18-191.4.4 微波加热的特点191.5 微波合成纳米材料的研究进展19-221.6 钨酸盐、钼酸盐及三氧化钨材料的应用前景22-231.7 本课题的研究意义及主要研究内容23-24第2章 钨酸盐的微波辅助合成及性能研究24-492.1 引言24-252.2 实验设备及原料25-262.3 微波辅助超快速合成CdWO_4纳米棒及其荧光性质研究26-332.3.1 实验步骤262.3.2 实验结果与讨论26-322.3.3 本节小结32-332.4 微波辅助合成ZnWO_4纳米颗粒及其光催化性质研究33-412.4.1 实验步骤332.4.2 实验结果与讨论33-402.4.3 本节小结40-412.5 微波辅助合成BaWO_4纳米颗粒及其荧光性质研究41-452.5.1 实验步骤412.5.2 实验结果与讨论41-442.5.3 本节小结44-452.6 微波辅助合成CaWO_4纳米颗粒及其荧光性质研究45-492.6.1 实验步骤452.6.2 实验结果与讨论45-482.6.3 本节小结48-49第3章 BaMoO_4的微波辅助合成及荧光性质研究49-553.1 引言493.2 实验部分49-503.2.1 化学试剂与仪器设备49-503.2.2 实验步骤503.3 实验结果与讨论50-543.3.1 BaMoO_4纳米粉体的粉末衍射表征50-513.3.2 BaMoO_4纳米粉体的红外光谱表征51-523.3.3 BaMoO_4纳米粉体的结晶形貌表征52-533.3.4 BaMoO_4的形成机理探讨533.3.5 BaMoO_4纳米粉体的荧光性质表征53-543.4 本章小结54-55第4章 微波辅助法合成WO_31/3H_2O及其光催化性能研究55-634.1 引言554.2 实验部分55-574.2.1 化学试剂与仪器设备55-564.2.2 实验步骤56-574.3 实验结果与讨论57-614.3.1 WO_31/3H_2O纳米粉体的粉末衍射表征57-584.3.2 WO_31/3H_2O纳米粉体的红外光谱表征584