Fe-Mo與其碳復合材料的電化學合成及其應用研究
發(fā)布時間：2018-08-26 18:24
【摘要】：多年來,Fe-Mo及其復合材料在冶金行業(yè)、工業(yè)催化等領域有廣泛的應用。近年來,廣泛的前沿研究也表明,Fe-Mo及其復合材料具有獨特的結構與性質,尤其是在電磁、催化和傳感器等方面都具有重要的應用和價值。目前,Fe-Mo材料的制備方法有:溶膠凝膠法,液相共沉淀法,固相反應法等。此中,鐵鉬催化劑的制備方法在工業(yè)上主流的方法有兩種:以氯化鐵為原料的沉淀法和以硝酸鐵為原料的凝膠法。本論文采用雙室陽離子膜電解法制備鉬酸鐵(Fe2(MoO4)3)粉體,對其物理及電催化性能作了相關表征。并探究了鉬酸鐵粉體與葡萄糖混合鍛燒,制備出碳復合的Fe-Mo材料并將其應用在超級電容器方面,測試其電化學性能。論文主要內容:1、采用雙室陽離子膜電解槽,電解制備三種形貌的鉬酸鐵粉體。并使用X-射線衍射技術(XRD)、掃描電子顯微鏡(SEM)、高分辨透射電鏡分析(TEM)、熒光光譜(PL)、比表面積分析(BET)、光電子能譜分析(XPS)等分析手段對產物粉體進行物理化學性能表征。還使用Material Studio軟件分別模擬三種形貌鉬酸鐵的晶體結構。2、采用三電極體系,將三種形貌鉬酸鐵粉體進行甲醇的電催化性能測試,三種工作電極 Sphere-Fe2(MoO4)3/GCE,Nanorod--Fe2(MoO4)3/GCE 和 Nanotube-Fe2(MoO4)3/GCE在循環(huán)伏安曲線正向掃描的峰值電流密度分別為0.75mA/cm2,1.72mA/cm2和3.27mA/cm2,通過峰值電流密度的對比,將三種粉體制備的測試電極進行比較,并且可以得知與鉑電極進行對比,Nanotube--Fe2(MoO4)3/GCE電極峰值電流是其 1.1 倍,220 次循環(huán)后,Sphere-Fe2(MoO4)3/GCE,Nanorod--Fe2(MoO4)3/GCE 和 Nanotube--Fe2(MoO4)3/GCE 催化活性保持率依次為 91%,92%,88%。3、鉬酸鐵粉體與葡萄糖混合鍛燒,制備出碳復合的Fe-Mo材料,使用X-射線衍射技術(XRD)、掃描電子顯微鏡(SEM)、高分辨透射電鏡分析(TEM)、熒光光譜(PL)、比表面積分析(BET)、光電子能譜分析(XPS)等分析手段對產物粉體進行物理化學性能表征。然后將其應用于超級電容器中,通過CV, GCD、循環(huán)性能的測試,2mV/s時,電極在1M的硫酸鋰、氫氧化鈉、硫酸電解液中,容量分別為380.8F/g,190.2F/g和260.9F/g,5A/g條件下,一萬次充放電循環(huán)后,在1M的硫酸鋰、氫氧化鈉、硫酸電解液中容量保持率分別為81.8%, 75.4%和 56.8%。
[Abstract]:For many years, Fe-Mo and its composites have been widely used in metallurgical industry, industrial catalysis and other fields. In recent years, extensive frontier studies have also shown that the Fe-Mo and its composites have unique structures and properties, especially in electromagnetic, catalytic and sensor applications. At present, the preparation methods of Fe-Mo materials include sol-gel method, liquid phase coprecipitation method, solid state reaction method and so on. There are two main methods for the preparation of Fe-Mo catalyst in industry: precipitation with ferric chloride as raw material and gel method with ferric nitrate as raw material. Iron molybdate (Fe2 (MoO4) 3) powders were prepared by double chamber cationic membrane electrolysis, and their physical and electrocatalytic properties were characterized. The carbon composite Fe-Mo material was prepared by calcination of ferric molybdate powder and glucose, and was applied to supercapacitors to test its electrochemical properties. In this paper, three kinds of ferromolybdate powders with different morphologies were prepared by electrolysis in a two-chamber cationic membrane electrolytic cell. The physical and chemical properties of the powders were characterized by means of X-ray diffraction (XRD),) scanning electron microscope (XRD), high resolution transmission electron microscopy (SEM), specific surface area analysis (PL), specific surface area analysis (BET), photoelectron spectroscopy (XPS), etc. The crystal structure of ferric molybdate with three morphologies was simulated by Material Studio software, and the electrocatalytic properties of methanol were tested by using the three-electrode system. The peak current density of Sphere-Fe2 (MoO4) 3 / GCEO Nanorod-Fe _ 2 (MoO4) 3/GCE and Nanotube-Fe2 (MoO4) 3/GCE in the forward scanning of cyclic voltammetry curves were 0.75 Ma / cm ~ (2) 路cm ~ (2) and 3.27 Ma / 路cm ~ (2) respectively. By comparing the peak current density, the test electrodes prepared by the three kinds of powders were compared. It was also found that the peak current of Nanotube-Fe _ 2 (MoO4) 3/GCE electrode was 1.1 times higher than that of platinum electrode. After 220 cycles, Sphere-Fe2 (MoO4) _ 3 / GCEOD-Fe _ 2 (MoO4) 3/GCE (MoO4) and Nanotube--Fe2 (MoO4) 3/GCE kept the catalytic activity of 92288.3The Fe _ (2) molybdate powder was calcined with glucose, and the carbon composite Fe-Mo material was prepared. X-ray diffraction (XRD) technique (XRD), scanning electron microscope (XRD),) high resolution transmission electron microscopy (SEM),) was used to characterize the physical and chemical properties of the product by means of (TEM), fluorescence spectrum (PL), specific surface area analysis (BET), photoelectron spectrum analysis (XPS) etc. Then it was applied to supercapacitors. When the CV, GCD, cycle performance was measured by 2mV / s, the electrode capacity was 380.8F / g, 190.2F / g and 260.9F / g / g in 1m lithium sulfate, sodium hydroxide and sulfuric acid electrolyte, respectively, after 10,000 charge-discharge cycles. The capacity retention rates of lithium sulfate, sodium hydroxide and sulphuric acid electrolyte at 1m were 81.8%, 75.4% and 56.8%, respectively.
【學位授予單位】：上海應用技術大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB33;TM53
本文編號：2205773
[Abstract]:For many years, Fe-Mo and its composites have been widely used in metallurgical industry, industrial catalysis and other fields. In recent years, extensive frontier studies have also shown that the Fe-Mo and its composites have unique structures and properties, especially in electromagnetic, catalytic and sensor applications. At present, the preparation methods of Fe-Mo materials include sol-gel method, liquid phase coprecipitation method, solid state reaction method and so on. There are two main methods for the preparation of Fe-Mo catalyst in industry: precipitation with ferric chloride as raw material and gel method with ferric nitrate as raw material. Iron molybdate (Fe2 (MoO4) 3) powders were prepared by double chamber cationic membrane electrolysis, and their physical and electrocatalytic properties were characterized. The carbon composite Fe-Mo material was prepared by calcination of ferric molybdate powder and glucose, and was applied to supercapacitors to test its electrochemical properties. In this paper, three kinds of ferromolybdate powders with different morphologies were prepared by electrolysis in a two-chamber cationic membrane electrolytic cell. The physical and chemical properties of the powders were characterized by means of X-ray diffraction (XRD),) scanning electron microscope (XRD), high resolution transmission electron microscopy (SEM), specific surface area analysis (PL), specific surface area analysis (BET), photoelectron spectroscopy (XPS), etc. The crystal structure of ferric molybdate with three morphologies was simulated by Material Studio software, and the electrocatalytic properties of methanol were tested by using the three-electrode system. The peak current density of Sphere-Fe2 (MoO4) 3 / GCEO Nanorod-Fe _ 2 (MoO4) 3/GCE and Nanotube-Fe2 (MoO4) 3/GCE in the forward scanning of cyclic voltammetry curves were 0.75 Ma / cm ~ (2) 路cm ~ (2) and 3.27 Ma / 路cm ~ (2) respectively. By comparing the peak current density, the test electrodes prepared by the three kinds of powders were compared. It was also found that the peak current of Nanotube-Fe _ 2 (MoO4) 3/GCE electrode was 1.1 times higher than that of platinum electrode. After 220 cycles, Sphere-Fe2 (MoO4) _ 3 / GCEOD-Fe _ 2 (MoO4) 3/GCE (MoO4) and Nanotube--Fe2 (MoO4) 3/GCE kept the catalytic activity of 92288.3The Fe _ (2) molybdate powder was calcined with glucose, and the carbon composite Fe-Mo material was prepared. X-ray diffraction (XRD) technique (XRD), scanning electron microscope (XRD),) high resolution transmission electron microscopy (SEM),) was used to characterize the physical and chemical properties of the product by means of (TEM), fluorescence spectrum (PL), specific surface area analysis (BET), photoelectron spectrum analysis (XPS) etc. Then it was applied to supercapacitors. When the CV, GCD, cycle performance was measured by 2mV / s, the electrode capacity was 380.8F / g, 190.2F / g and 260.9F / g / g in 1m lithium sulfate, sodium hydroxide and sulfuric acid electrolyte, respectively, after 10,000 charge-discharge cycles. The capacity retention rates of lithium sulfate, sodium hydroxide and sulphuric acid electrolyte at 1m were 81.8%, 75.4% and 56.8%, respectively.
【學位授予單位】：上海應用技術大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TB33;TM53
【參考文獻】
相關期刊論文 前10條
1 楊翠顏;李干希;張健;羅潔瑜;鄭筱楓;;一種鋁陽極氧化膜的復合著色方法[J];廣東化工;2016年09期
2 邢春蘭;何廣平;肖信;南俊民;;類桃形鉬酸鐵微納結構材料的水熱合成、磁性和催化性能[J];華南師范大學學報(自然科學版);2014年03期
3 安力偉;魏慧賢;;鉬酸鐵在鄰苯二甲酸氧化降解中的催化性能研究[J];廣東化工;2014年06期
4 馬文林;陸龍;郭鴻儒;王靜波;賈輝;張樹偉;呂晉軍;;Fe-Mo-石墨和Fe-Mo-Ni-石墨的高溫摩擦磨損行為[J];摩擦學學報;2013年05期
5 王立;楊為民;周興貴;丁維平;高煥新;金國杰;;改性空心結構鉬酸鐵催化丙烯選擇氧化[J];石油化工;2012年10期
6 李松梅;李彬;劉建華;于美;;鋁合金表面用化學刻蝕和陽極氧化法制備的超疏水膜層的耐蝕性能(英文)[J];無機化學學報;2012年08期
7 孫繼光;;電解銀法與鐵鉬法生產甲醛工藝技術分析比較[J];化工技術與開發(fā);2012年05期
8 付傳起;孫俊才;王宙;于馳;;感應燒結石墨/銅鐵基高溫自潤滑復合材料摩擦學性能研究[J];功能材料;2010年10期
9 王立;馬濤;盛蔚;郭學鋒;丁維平;陳懿;;鉬酸鐵納米管催化劑的合成、表征及其催化丙烯環(huán)氧化性能[J];催化學報;2009年08期
10 韓杰勝;劉維民;呂晉軍;王靜波;;Fe-Mo-(MoS_2/PbO)高溫自潤滑材料的摩擦學特性[J];材料科學與工程學報;2008年01期
相關碩士學位論文 前3條
1 柯永樂;云母鈦珠光顏料的表面改性及其在粉末涂料中的應用研究[D];廣東工業(yè)大學;2016年
2 宗陽;轉變經濟增長方式中的能源價格波動的宏觀經濟風險[D];東北財經大學;2016年
3 朝潔;石墨烯/鉬酸鹽基電極材料的制備及其在超級電容器中的應用[D];東華大學;2014年
，本文編號：2205773
本文鏈接：http://sikaile.net/kejilunwen/cailiaohuaxuelunwen/2205773.html
最近更新
教材專著
