中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2014年
2期
140-144
,共5页
李晓玉%苏一博%周莹莹%王梦萦%方婕%贾伏员%杨华明
李曉玉%囌一博%週瑩瑩%王夢縈%方婕%賈伏員%楊華明
리효옥%소일박%주형형%왕몽영%방첩%가복원%양화명
介孔材料%二氧化锡%络合%水热合成%结构分析%光学性能
介孔材料%二氧化錫%絡閤%水熱閤成%結構分析%光學性能
개공재료%이양화석%락합%수열합성%결구분석%광학성능
mesoporous materials%tin dioxide%complexation%hydrothermal synthesis%structural analysis%optical properties
二氧化锡(SnO2)作为一种n型宽禁带半导体氧化物材料,广泛用于有机物催化、固态电子器件和锂离子电池电极材料领域。介孔SnO2具有较大的比表面积和纳米级有序孔道,与周围介质之间存在更强的相互作用力,可提高其在气敏传感器、催化反应中的应用效率。本文以SnCl4·5H2O为锡源,P123为模板剂,采用络合水热法合成了具有金红石结构的介孔二氧化锡,并考察了pH值、表面活性剂和添加剂等因素对介孔结构形成的影响;采用X射线衍射、透射电镜、荧光光谱等手段综合分析了产物的结构、形貌、成分及光学性质。结果表明所制备的介孔SnO2具有蠕虫状孔结构,表面积大,孔径集中分布在2~8 nm。合成的样品具有良好的光学性能,在光学材料领域具有应用前景。
二氧化錫(SnO2)作為一種n型寬禁帶半導體氧化物材料,廣汎用于有機物催化、固態電子器件和鋰離子電池電極材料領域。介孔SnO2具有較大的比錶麵積和納米級有序孔道,與週圍介質之間存在更彊的相互作用力,可提高其在氣敏傳感器、催化反應中的應用效率。本文以SnCl4·5H2O為錫源,P123為模闆劑,採用絡閤水熱法閤成瞭具有金紅石結構的介孔二氧化錫,併攷察瞭pH值、錶麵活性劑和添加劑等因素對介孔結構形成的影響;採用X射線衍射、透射電鏡、熒光光譜等手段綜閤分析瞭產物的結構、形貌、成分及光學性質。結果錶明所製備的介孔SnO2具有蠕蟲狀孔結構,錶麵積大,孔徑集中分佈在2~8 nm。閤成的樣品具有良好的光學性能,在光學材料領域具有應用前景。
이양화석(SnO2)작위일충n형관금대반도체양화물재료,엄범용우유궤물최화、고태전자기건화리리자전지전겁재료영역。개공SnO2구유교대적비표면적화납미급유서공도,여주위개질지간존재경강적상호작용력,가제고기재기민전감기、최화반응중적응용효솔。본문이SnCl4·5H2O위석원,P123위모판제,채용락합수열법합성료구유금홍석결구적개공이양화석,병고찰료pH치、표면활성제화첨가제등인소대개공결구형성적영향;채용X사선연사、투사전경、형광광보등수단종합분석료산물적결구、형모、성분급광학성질。결과표명소제비적개공SnO2구유연충상공결구,표면적대,공경집중분포재2~8 nm。합성적양품구유량호적광학성능,재광학재료영역구유응용전경。
As an n-type wide band gap semiconductor oxide material,SnO2 has been widely applied in the fields of organic cataly-sis,solid state electronic devices and lithium-ion battery electrode materials.Mesoporous SnO2 with large surface area and a tuned array pore structure has been synthesized and the interaction between the surrounding media is stronger,which can improve its reaction efficiency as gas sensors and catalytic.A convenient and facile complexation hydrothermal process with SnCl4 ·5 H2 O as the tin source and P123 ((EO)20 (PO)70 (EO)20 )as the template was employed to synthesize SnO2 with rutile-type crystal meso-structure under ambient conditions.By considering the impact of different conditions on the mesoporous structure,including pH value,surfactants,inorganic tin precursors and additives,mesoporous SnO2 has been synthesized.X-ray diffraction,N2 adsorp-tion-desorption isotherm analysis,transmission electron microscope and photoluminescence spectrometer are used to analyze the structure,morphology,phase and optical properties of the samples.The results show that the synthesized material possessed a wormhole-like mesoporous structure,and a high specific surface area with an average pore diameter of approximately 2-8 nm.The mesoporous SnO2 shows better optical properties indicating its potential application as optical materials.