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Preparation and Characterization of CeO_2-TiO_2/SnO_2:Sb Films Deposited on Glass Substrates by R.F.Sputtering 认领 引用 被引量：6
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作者 ZHAO Qingnan DONG Yuhong NI Jiamiao WANG Peng ZHAO Xiujian 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2008年第4期443-447,共5页
CeO2-TiO2 films and CeO2-TiO/SnO2：Sb （6 mol%） double films were deposited on glass substrates by radio-frequency magnetron sputtering （R.F. Sputtering）, using SnO2：Sb（6 mol%） target, and CeO2- TiO2 targets wit... CeO2-TiO2 films and CeO2-TiO/SnO2：Sb （6 mol%） double films were deposited on glass substrates by radio-frequency magnetron sputtering （R.F. Sputtering）, using SnO2：Sb（6 mol%） target, and CeO2- TiO2 targets with different molar ratio of CeO2 to TiO2 （CeO2：TiO2-0：1.0; 0.1：0.9; 0.2：0.8; 0.3：0.7; 0.4：0.6; 0.5：0.5; 0.6：0.4; 0.7：0.3; 0.8：0.2; 0.9：0.1; 1.0：0）. The films are characterized by UV-visible transmission and infrared reflection spectra, scanning electron microscopy （SEM）, Raman spectroscopy, X-ray photoelectron spectroscopy （XPS） and X-ray diffraction （XRD）, respectively. The obtained results show that the amorphous phases composed of CeO2-TiO2 play an important role in absorbing UV, there are Ce^3-, Ce^4- and Ti^4- on the surface of the films; the glass substrates coated with CeO2-TiO2 （Ce/Ti=0.5：0.5; 0.6：0.4）/SnO2：Sb（6 mol%） double films show high absorbing UV（〉99）, high visible light transmission （75%） and good infrared reflection （〉70%）. The sheet resistance of the films is 30-50 Ω/□. The glass substrates coated with the double functional films can be used as window glass of buildings, automobile and so on. 展开更多
关键词 coating glass CeO2-TiO/SnO2：Sb double thin films absorbing UV IR reflection R.F. sputterin
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凹凸棒黏土-SnO2-TiO2复合材料的制备及其光催化性能 认领 引用 被引量：10
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作者 张莉莉 吕伏建 +2 位作者 刘建全 汤超 汪信 《应用化学》 CAS 北大核心 2010年第1期63-68,共6页
以凹凸棒黏土(Att)为基体,通过原位溶胶-凝胶工艺,将SnO2-TiO2复合氧化物负载于凹凸棒黏土表面制备凹凸棒黏土复合型光催化剂(Att-SnO2-TiO2)。采用XRD、BET、TEM等分析测试技术对产物进行了表征。结果表明,SnO2-TiO2复合氧化物均匀地... 以凹凸棒黏土(Att)为基体,通过原位溶胶-凝胶工艺,将SnO2-TiO2复合氧化物负载于凹凸棒黏土表面制备凹凸棒黏土复合型光催化剂(Att-SnO2-TiO2)。采用XRD、BET、TEM等分析测试技术对产物进行了表征。结果表明,SnO2-TiO2复合氧化物均匀地负载于凹凸棒黏土表面,其平均粒径约10 nm;经过复合氧化物负载改性后,凹凸棒黏土的表面形貌得到明显改善,产物的负载效果好、比表面积大。以光催化降解甲基橙为探针,研究了凹凸棒黏土复合光催化剂的光催化性能。结果表明,凹凸棒黏土复合光催化剂显示出优异的光催化性能,其光催化活性顺序为Att-SnO2-TiO2>Att-SnO2>Att-TiO2。以性能较佳的Att-SnO2-TiO2为催化剂光降解甲基橙30 min,结果表明,甲基橙的降解率达99%。实验表明,Att-SnO2-TiO2复合光催化剂可重复利用。 展开更多
关键词 SnO2-TiO2 光催化 凹凸棒黏土 负载 溶胶-凝胶法
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复合型固体超强酸SO_42-/SnO_2-TiO_2催化合成乙酸松油酯的研究 认领 引用 被引量：11
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作者 赵黔榕 吴春华 +3 位作者 毕韵梅 姜婧 石睿 秦红艳 《化学研究与应用》 CAS 北大核心 2006年第5期510-514,共5页
采用溶胶一凝胶法制备了新型复合固体超强酸SO42-/SnO2-TiO2,通过XRD和IR对其结构进行了表征。以该固体酸为催化剂、松油醇和乙酸酐为原料合成乙酸松油酯,考察了影响反应的因素。结果表明:反应温度40-50℃、催化剂用量1.8-2.2%、醇酐摩... 采用溶胶一凝胶法制备了新型复合固体超强酸SO42-/SnO2-TiO2,通过XRD和IR对其结构进行了表征。以该固体酸为催化剂、松油醇和乙酸酐为原料合成乙酸松油酯,考察了影响反应的因素。结果表明:反应温度40-50℃、催化剂用量1.8-2.2%、醇酐摩尔比1:1.6、反应时间4-5h是最适宜的反应条件,其松油醇转化率达到98%以上,产物中乙酸松油酯含量为88%。与普通单氧化物固体酸比较,该复合型固体酸有更高的催化活性和选择性。 展开更多
关键词 固体超强酸 SO4^2-/SnO2-TiO2 改性 乙酸松油酯 催化 合成
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纳米复合S2O8^2-/SnO2-TiO2催化α-蒎烯异构反应 认领 引用 被引量：6
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作者 赵黔榕 吴春华 +2 位作者 燕军 张国平 杜霞 《应用化学》 CAS 北大核心 2008年第2期204-207,共4页
采用溶胶-凝胶法制备了新型纳米复合S2O82-/SnO2-TiO2固体超强酸催化剂,用XRD、TEM、FT-IR和BET比表面测定技术对其结构进行了表征。结果显示,所得复合催化剂颗粒为圆球形,粒径为15～20nm,且粒度均匀,具有较好的分散性;S2O82-附着于SnO2... 采用溶胶-凝胶法制备了新型纳米复合S2O82-/SnO2-TiO2固体超强酸催化剂,用XRD、TEM、FT-IR和BET比表面测定技术对其结构进行了表征。结果显示,所得复合催化剂颗粒为圆球形,粒径为15～20nm,且粒度均匀,具有较好的分散性;S2O82-附着于SnO2-TiO2表面形成强酸中心;SnO2的引入明显增大了催化剂的比表面积。首次将纳米复合S2O82-/SnO2-TiO2用于催化α-蒎烯异构化反应。该催化剂具有较好的催化活性和选择性,异构化反应的主产物是莰烯,副产物是苧烯、异松油烯、三环烯等。与单一型S2O82-/TiO2比较,该催化剂能有效降低异构反应体系温度20～30℃。在适宜的工艺条件下,α-蒎烯的转化率为98%以上,莰烯的选择性达到63%。 展开更多
关键词 固体超强酸 S2O8^2-/SnO2-TiO2 纳米粒子 α-蒎烯 催化异构
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SnO_2-TiO_2薄膜载体对Au-Pt纳米颗粒电化学性能的影响 认领 引用 被引量：3
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作者 于志辉 谢佳 夏定国 《高等学校化学学报》 SCIE EI CAS 北大核心 2008年第6期1190-1194,共5页
采用真空镀膜法在玻碳(GC)电极表面修饰SnO2-TiO2薄膜,在SnO2-TiO2/GC复合电极表面组装Au-Pt双金属纳米颗粒,制得Au-Pt/SnO2-TiO2/GC复合电极.通过循环伏安法(CV)研究了SnO2-TiO2薄膜载体对Au-Pt双金属纳米颗粒电化学性能的影响;采用扫... 采用真空镀膜法在玻碳(GC)电极表面修饰SnO2-TiO2薄膜,在SnO2-TiO2/GC复合电极表面组装Au-Pt双金属纳米颗粒,制得Au-Pt/SnO2-TiO2/GC复合电极.通过循环伏安法(CV)研究了SnO2-TiO2薄膜载体对Au-Pt双金属纳米颗粒电化学性能的影响;采用扫描电镜(SEM)及X射线光电子能谱(XPS)对Au-Pt在SnO2-TiO2薄膜沉积的形貌及结构进行了表征.研究结果表明,10nm的Au-Pt双金属纳米颗粒均匀地组装于SnO2-TiO2薄膜表面;SnO2-TiO2薄膜载体改善了复合电极抗CO中毒能力;Au-Pt双金属合金的形成提高了Pt对甲醇氧化的电催化能力,SnO2-TiO2薄膜载体又使Pt纳米粒子d空轨道增多,提高了Au-Pt双金属纳米颗粒的稳定性和催化性能. 展开更多
关键词 Au-Pt纳米颗粒 SnO2-TiO2薄膜 抗CO中毒 甲醇氧化
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SnO2-TiO2/UV/O3催化降解糖蜜酒精废水 认领 引用 被引量：3
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作者 曾玉凤 刘自力 秦祖赠 《工业水处理》 CAS 北大核心 2008年第6期16-20,共5页
用沉积—沉淀法制备了SnO2-TiO2光催化剂,利用XRD、UV-Vis等技术对其结构进行了表征。以糖蜜酒精废水为处理对象,采用自制的SnO2-TiO2作为光催化剂,研究了在紫外光条件下,稀释比、催化剂投加量、臭氧投加量和pH等因素对光催化臭氧降解... 用沉积—沉淀法制备了SnO2-TiO2光催化剂,利用XRD、UV-Vis等技术对其结构进行了表征。以糖蜜酒精废水为处理对象,采用自制的SnO2-TiO2作为光催化剂,研究了在紫外光条件下,稀释比、催化剂投加量、臭氧投加量和pH等因素对光催化臭氧降解反应的影响。结果表明:在紫外光照射、催化剂用量0.25g/L、通气流量30L/h的条件下,稀释20倍的糖蜜酒精废水经120min的处理,其脱色率达到98.57%;此外,还对催化降解糖蜜酒精废水的机理进行了探讨。 展开更多
关键词 SnO2-TiO2 O3 光催化 糖蜜酒精废水
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纳米SnO_2-TiO_2复合材料的氢敏性能及气敏机理 认领 引用 被引量：4
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作者 刘天模 曾文 《功能材料》 EI CAS 北大核心 2009年第7期1229-1232,共4页
以钛酸正丁酯和SnCl4.5H2O为前驱体,采用溶胶-凝胶法制备了SnO2及Sn/Ti摩尔比为5/1的SnO2-TiO2复合纳米材料,并以此复合材料制备了旁热式气敏传感器,对两者的氢敏性能做了比较,利用第一性原理对其气敏机理进行了理论分析。结果表明,TiO... 以钛酸正丁酯和SnCl4.5H2O为前驱体,采用溶胶-凝胶法制备了SnO2及Sn/Ti摩尔比为5/1的SnO2-TiO2复合纳米材料,并以此复合材料制备了旁热式气敏传感器,对两者的氢敏性能做了比较,利用第一性原理对其气敏机理进行了理论分析。结果表明,TiO2的掺杂使SnO2导带底部产生了掺杂能级,使SnO2元件电阻下降,并随温度的上升出现先快速下降后缓慢下降2个过程。SnO2-TiO2元件对H2的灵敏性明显优于SnO2元件。吸附H后的SnO2电子态密度变化较小,而SnO2-TiO2的电子态密度则有明显变化,并产生了掺杂能级,导带负移,促进了能带间的电子转移。 展开更多
关键词 SNO2-TiO2 氢气 灵敏度 能带
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Electrodeposition of SnO_2 nanocrystalline thin film using butyl-rhodamine B as a structure-directing agent 认领 引用 被引量：1
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作者 Jing Yang Shou Li Bai +3 位作者 Rui Xian Luo Ai Fan Chen Yuan Lin Jing Bo Zhang 《Chinese Chemical Letters》 SCIE CAS 2010年第12期1505-1508,共4页
Porous SnO2 nanocrystalline thin films were successfully electrodeposited from an oxygen-saturated acid aqueous solution of SnCl2 containing different concentrations of butyl-rhodamine B（BRhB） at 70℃.BRhB with subs... Porous SnO2 nanocrystalline thin films were successfully electrodeposited from an oxygen-saturated acid aqueous solution of SnCl2 containing different concentrations of butyl-rhodamine B（BRhB） at 70℃.BRhB with substitute of amidocyanogen can be dissolved in the acid deposition solution,where HCl was added to suppress hydrolysis of SnCl2.So it was used as a structure-directing agent to promote the crystal growth of SnO_2.The formed porous morphology and tetragonal rutile crystalline structure of the electrodeposited thin films were controlled by the addition of BRhB with different amounts. 展开更多
关键词 Nanocrystalline SnO2 thin film Electrodeposition Butyl-rhodamine B Structure-directing agent
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CO为还原剂同时还原SO_2和NO的SnO_2-TiO_2固溶体催化剂 Ⅰ.催化剂的催化性能 认领 引用 被引量：17
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作者 刘赵穹 马骏 杨锡尧 《催化学报》 2004年第4期297-301,共5页
采用共沉淀法制备了不同SnO2 含量的SnO2 TiO2 固溶体催化剂 .发现该催化剂对以CO为还原剂同时还原SO2 和NO生成S和N2 的反应具有高活性和高稳定性 .SnO2 含量为 5 0 % (摩尔分数 )的样品活性最高 ,在 35 0℃ ,0 0 5 2 5 %SO2 ,0 0 5 2 ... 采用共沉淀法制备了不同SnO2 含量的SnO2 TiO2 固溶体催化剂 .发现该催化剂对以CO为还原剂同时还原SO2 和NO生成S和N2 的反应具有高活性和高稳定性 .SnO2 含量为 5 0 % (摩尔分数 )的样品活性最高 ,在 35 0℃ ,0 0 5 2 5 %SO2 ,0 0 5 2 %NO ,0 2 0 8%CO和空速 30 0 0h 1的条件下 ,NO转化率接近 10 0 % ,SO2 转化率为 88% ,S和N2 的选择性都接近10 0 % ,反应过程中没有剧毒气体COS生成 .对于SO2 +CO反应 ,该样品也显示了极高的活性 ,在 35 0℃ ,0 10 5 %SO2 ,0 2 0 8%CO和空速 30 0 0h-1的条件下 ,SO2 转化率达 98% ,S的选择性近 10 0 % .但该催化剂对NO +CO反应的催化活性不高 ,在 35 0℃ ,0 10 2 5 %NO ,0 2 0 8%CO ,空速 30 0 0h-1的条件下 ,NO的转化率仅为 5 0 % .上述结果表明 ,SO2 对NO +CO反应具有促进作用 .单独的SnO2 或TiO2 对SO2 +CO ,NO +CO或SO2 +NO +CO反应的催化活性都很低 ,但SnO2 和TiO2 形成SnO2 TiO2 固溶体后催化活性显著增大 ,说明SnO2 和TiO2 展开更多
关键词 二氧化锡 二氧化钛 一氧化碳 还原 二氧化硫 一氧化氮 废气处理 SnO2-TiO2固溶体催化剂 催化性能
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SnO_2-TiO_2光催化剂的制备及其对两种染料废水降解作用的研究 认领 引用 被引量：2
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作者 宫江宁 廖莉玲 任绍成 《贵州师范大学学报（自然科学版）》 CAS 2009年第4期37-40,共4页
采用溶胶—凝胶法制备了SnO2-TiO2光催化剂,用番红和结晶紫水溶液作为模拟染料废水,研究催化剂用量对番红和结晶紫溶液光催化降解率的影响以及H2O2在SnO2-TiO2光催化剂在降解染料废水过程中的协同作用。实验结果表明:SnO2-TiO2复合光催... 采用溶胶—凝胶法制备了SnO2-TiO2光催化剂,用番红和结晶紫水溶液作为模拟染料废水,研究催化剂用量对番红和结晶紫溶液光催化降解率的影响以及H2O2在SnO2-TiO2光催化剂在降解染料废水过程中的协同作用。实验结果表明:SnO2-TiO2复合光催化剂对番红和结晶紫有一定的光催化降解作用;加入0.1500g SnO2-TiO2复合光催化剂时,番红的降解率最高,在紫外光照射180min后降解率可达到40.86%。加入0.0500g SnO2-TiO2复合光催化剂时,结晶紫的降解率最高,在紫外光照射180min后降解率可达到61.37%;加入适量的H2O2,可以使染料废水的降解效率得到很大的提高。 展开更多
关键词 SnO2-TiO2 溶胶-凝胶法 光催化剂 降解率 染料废水 H2O2
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YAlO_3/SnO_2-TiO_2复合物的制备及降解有机污染物的应用 认领 引用 被引量：1
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作者 程春萍 《稀土》 EI CAS CSCD 北大核心 2013年第1期59-63,共5页
以实验室合成YAlO3/SnO2-TiO2复合物作为催化剂,以酸性红B溶液模拟有机污染水,并用扫描电镜对YAlO3/SnO2-TiO2进行表征,研究了处理温度、处理时间、照射时间及YAlO3/SnO2-TiO2对酸性红B降解率的影响,同时也对不同染料进行了研究。结果表... 以实验室合成YAlO3/SnO2-TiO2复合物作为催化剂,以酸性红B溶液模拟有机污染水,并用扫描电镜对YAlO3/SnO2-TiO2进行表征,研究了处理温度、处理时间、照射时间及YAlO3/SnO2-TiO2对酸性红B降解率的影响,同时也对不同染料进行了研究。结果表明,在YAlO3/SnO2-TiO2催化剂作用下可见光降解酸性红B的效果明显优于单纯TiO2或SnO2催化时的效果。 展开更多
关键词 YAlO3 SnO2-TiO2复合物 光催化降解 可见光照射 有机污染物
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Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO_2 Films Deposited by APCVD 认领 引用 被引量：1
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作者 Deheng ZHANGHonglei MA 《Journal of Materials Science & Technology》 SCIE EI CAS 1997年第1期50-56,共7页
Transparent conducting F-doped texture SnO2 films with resistivity as low as 5× 10-4 Ω ·cm,with carrier concentrations between 3.5 × 1020 and 7× 1020 cm-3 and Hall mobilities from 15.7 to 20.1 cm2... Transparent conducting F-doped texture SnO2 films with resistivity as low as 5× 10-4 Ω ·cm,with carrier concentrations between 3.5 × 1020 and 7× 1020 cm-3 and Hall mobilities from 15.7 to 20.1 cm2/(V/s) have been prepared by atmosphere pressure chemical vapour deposition (APCVD). These polycrystalline films possess a variable preferred orientation, the polycrystallite sizes and orientations vary with substrate temperature. The substrate temperature and fluorine flow rate dependence of conductivity, Hall mobility and carrier conentration fOr the resultingfilms have been obtained. The temperature dependence of the mobiity and carrier concentrationhave been measured over a temperature range 16～400 K. A systematically theoretical analysis on scattering mechanisms for the highly conductive SnO2 films has been given. Both theoretical analysis and experimental results indicate that for these degenerate, polycrystalline SnO2 ：F films in the low temperature range (below 100 K), ionized impurity scattering is main scattering mechanism. However, when the temperature is higher than 100 K, the lattice vibration scattering becomes dominant. The grain boundary scattering makes a small contribution to limit the mobility of the films. 展开更多
关键词 SnO cm Conduction Properties and Scattering Mechanisms in F-doped Textured Transparent Conducting SnO2 Films Deposited by APCVD
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Synthesis and characterization of Sb-doped SnO2-(CeO2-TiO2)composite thin films deposited on glass substrates for antistatic electricity and UV-shielding 认领 引用 被引量：16
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作者 WU Shuo ZHAO Qingnan +1 位作者 MIAO Dengkui DONG Yuhong 《Journal of Rare Earths》 SCIE EI CAS 2010年第S1期189-193,共5页
Sb-doped SnO2(ATO)-(CeO2-TiO2)thin Films were deposited on glass substrates using the mixed solution including CeO2-TiO2 precursor and ATO particles by sol-gel dip coating process.ATO particles were prepared using low... Sb-doped SnO2(ATO)-(CeO2-TiO2)thin Films were deposited on glass substrates using the mixed solution including CeO2-TiO2 precursor and ATO particles by sol-gel dip coating process.ATO particles were prepared using low-temperature hydrothermal process.The mixed molar ratio of ATO to(CeO2-TiO2)vs the properties of CeO2-TiO2 thin film was investigated.The optical properties of the films were characterized by UV-visible transmission and infrared reflection spectra,the sheet resistance of ATO particles and films were measured by rubber sheeter(MYI-50)and four-point probe(HisuperGroup Inc,SDY-5),the surface morphology and structure of the films were analyzed using 3D Digitale Mikroskop and X-ray diffraction(XRD),respectively.The results showed that the ATO precursor solution lost weight completely at about 500 oC,and the ATO particles was obtained,which indicated the same rutile lattice structure as SnO2.The glass substrates coated with ATO-(CeO2-TiO2)thin films showed better properties in antistatic electricity(104-106Ω/),shielding UV(almost 100%),visible light transmission(70%)and infrared reflection(】30%). 展开更多
关键词 antistatic electricity UV shielding ATO-(CeO2-TiO2)thin films hydrothermal process rare earths
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SnO_2-TiO_2复合溶胶阻燃羊毛耐洗性研究 认领 引用
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作者 薛日杰 王树根 《成都纺织高等专科学校学报》 2017年第1期129-131,共3页
SnO_2-TiO_2复合溶胶整理后的羊毛织物有较好的阻燃效果,但不耐水洗。采用有机硅整理剂对阻燃整理后的羊毛进行整理,以提高其耐水洗性。有机硅整理剂对羊毛织物燃烧有助燃作用,随着有机硅整理剂施加量的增加,其助燃效果越明显,当有机硅... SnO_2-TiO_2复合溶胶整理后的羊毛织物有较好的阻燃效果,但不耐水洗。采用有机硅整理剂对阻燃整理后的羊毛进行整理,以提高其耐水洗性。有机硅整理剂对羊毛织物燃烧有助燃作用,随着有机硅整理剂施加量的增加,其助燃效果越明显,当有机硅整理剂的用量为每千克布24 g时达到最佳平衡点,即有机硅整理剂对阻燃羊毛的助燃作用相对于提高耐水洗性效果影响最小。经过10次水洗后,LOI仍可达到30.3,其阻燃剂理论残留量为42.8%。 展开更多
关键词 有机硅整理剂 SnO2-TiO2复合溶胶 氧指数 耐洗性
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Optoelectronic properties of SnO2 thin films sprayed at different deposition times 认领 引用 被引量：1
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作者 Allag Abdelkrim Saad Rahmane +2 位作者 Ouahab Abdelouahab Attouche Hafida Kouidri Nabila 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第4期296-302,共7页
This article presents the elaboration of tin oxide （SnO2） thin films on glass substrates by using a home-made spray pyrolysis system. Effects of film thickness on the structural, optical, and electrical film propert... This article presents the elaboration of tin oxide （SnO2） thin films on glass substrates by using a home-made spray pyrolysis system. Effects of film thickness on the structural, optical, and electrical film properties are investigated. The films are characterized by several techniques such as x-ray diffraction （XRD）, atomic force microscopy （AFM）, ultraviolet- visible （UV-Vis） transmission, and four-probe point measurements, and the results suggest that the prepared films are uniform and well adherent to the substrates. X-ray diffraction （XRD） patterns show that SnO2 film is of polycrystal with cassiterite tetragonal crystal structure and a preferential orientation along the （110） plane. The calculated grain sizes are in a range from 32.93 nm to 56.88 nm. Optical transmittance spectra of the films show that their high transparency average transmittances are greater than 65% in the visible region. The optical gaps of SnO2 thin films are found to be in a range of 3.64 eV-3.94 eV. Figures of merit for SnO2 thin films reveal that their maximum value is about 1.15 x 10-4 Ω-1 at λ = 550 nm. Moreover, the measured electrical resistivity at room temperature is on the order of 10^-2 Ω.cm. 展开更多
关键词 thin film SnO2 spray pyrolysis thickness properties
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Optimization of Gas Sensing Performance of Nanocrystalline SnO_2 Thin Films Synthesized by Magnetron Sputtering 认领 引用 被引量：1
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作者 N.Panahi M.T.Hosseinnejad +1 位作者 M.Shirazi M.Ghoranneviss 《Chinese Physics Letters》 SCIE EI CAS CSCD 2016年第6期99-103,共5页
Tin oxide （SnO2） is one of the most promising transparent conducting oxide materials, which is widely used in thin film gas sensors. We investigate the dependence of the deposition time on structural, morphologicaJ ... Tin oxide （SnO2） is one of the most promising transparent conducting oxide materials, which is widely used in thin film gas sensors. We investigate the dependence of the deposition time on structural, morphologicaJ and hydrogen gas sensing properties of SnO2 thin films synthesized by dc magnetron sputtering. The deposited samples are characterized by XRD, SEM, AFM, surface area measurements and surface profiler. Also the H2 gas sensing properties of SnO2 deposited samples are performed against a wide range of operating temperature. The XRD analysis demonstrates that the degree of crystallinity of the deposited SnO2 films strongly depends on the deposition time. SEM and AFM analyses reveal that the size of nanoparticles or agglomerates, and both average and rms surface roughness is enhanced with the increasing deposition time. Also gas sensors based on these SnO2 nanolayers show an acceptable response to hydrogen at various operating temperatures. 展开更多
关键词 of on as it or in Optimization of Gas Sensing Performance of Nanocrystalline SnO2 Thin Films Synthesized by Magnetron Sputtering SnO by
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环保催化剂SnO_2-TiO_2的程序升温还原及脱附研究 认领 引用
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作者 梁均方 《嘉应学院学报》 2004年第3期31-34,共4页
对以CO为还原剂同时还原SO2和NO分别为S和N2的反应,SnO2和TiO2(锐钛矿)没有催化活性,但它们组合成固溶体后,显示出很高的活性,说明它们之间存在协同效应 采用CO-TPR和NO-TPD证实SnO2和TiO2之间的协同效应表现为几何效应即TiO2使SnO2良... 对以CO为还原剂同时还原SO2和NO分别为S和N2的反应,SnO2和TiO2(锐钛矿)没有催化活性,但它们组合成固溶体后,显示出很高的活性,说明它们之间存在协同效应 采用CO-TPR和NO-TPD证实SnO2和TiO2之间的协同效应表现为几何效应即TiO2使SnO2良好分散在TiO2的内孔表面和电子效应即TiO2促进SnO2表面晶格氧的还原和削弱NO的吸附能力 CO-TPR研究证明SnO2或SnO2-TiO2中被CO还原的晶格氧数只是总晶格氧数的10-5,说明这部分晶格氧为表面晶格氧。 展开更多
关键词 环保催化剂 SnO2-TiO2 程序升温还原 程序升温脱附 晶格氧数 协同效应
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Preparation and Properties of Dip-coated CeO_2-TiO_2 Thin Golden Glass Film 认领 引用 被引量：1
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作者 李宏 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2007年第3期482-485,共4页
The golden and ultraviolet-absorbed CeO2-TiO2 film was prepared on soda-lime glass substrate with the thickness of 2 mm via the sol-gel method. The transmission spectra in range of 200 nm-800 nm were measured, and the... The golden and ultraviolet-absorbed CeO2-TiO2 film was prepared on soda-lime glass substrate with the thickness of 2 mm via the sol-gel method. The transmission spectra in range of 200 nm-800 nm were measured, and the crystallization, the abrasion and acid resistance were also investigated. The appropriate sol contents and heat-treatment schedule were determined. The results indicate that the appropriate molar ratio of Ce/Ti was 3：5 to 5：6. The ultraviolet-absorbance ability increased with the increase of the Ce/Ti molar ratio, but when the Ce/Ti molar ratio was higher than 1.5, the homogeneity of the film was deteriorated. With the increase of heat-treatment temperature, the main wavelengths of the color of the coated glasses were equal, but the color＇ s saturation decreased; the transmission peaks were the same, while the intensity of the peaks decreased. The roughness, abrasion and acid resistance of the film were also enhanced at the same time. The appropriate heat- treatment temperature may be 340℃. 展开更多
关键词 sol-gel method CeO2-TiO2 film dip-coating process
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High Sensitivity of Porous Cu-Doped SnO2 Thin Films to Methanol 认领 引用
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作者 Sara Benzitouni Mourad Zaabat +6 位作者 Aicha Khial Djamil Rechem Ahlem Benaboud Dhikra Bouras Abdelhakim Mahdjoub Mahdia Toubane Raphael Coste 《Advances in Nanoparticles》 CAS 2016年第2期140-148,共9页
Porous Cu-doped SnO2 thin films were synthesized by the sol-gel dip-coating method for enhancing methanol sensing performance. The effect of Cu doping concentration on the SnO2 sensibility was investigated. XRD data c... Porous Cu-doped SnO2 thin films were synthesized by the sol-gel dip-coating method for enhancing methanol sensing performance. The effect of Cu doping concentration on the SnO2 sensibility was investigated. XRD data confirm that the fabricated SnO2 films are polycrystalline with tetragonal rutile crystal structure. AFM and SEM micrographs confirmed the roughness and the porosity of SnO2 surface, respectively. UV-Vis spectrum shows that SnO2 thin films exhibit high transmittance in the visible region &#126;95%. The band gap (3.80 - 3.92 eV) and the optical thickness (893 - 131 nm) of prepared films were calculated from transmittance data. The sensing results demonstrate that SnO2 films have a high sensitivity and a fast response to methanol. In particular, 3% Cu-SnO2 films have a higher sensitivity (98%), faster response (10-2 s) and shorter recovery time (18 s) than other films. 展开更多
关键词 SnO2 Cu-Doped Sensitivity Porosity Response Time Band Gap Thin Films
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Comparative Study of Structural, Optical and Electrical Properties of SnO2Thin Film Growth via CBD, Drop-Cast and Dip-Coating Methods 认领 引用
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作者 Md. Tareq Rahman Zubair Ahmed +5 位作者 Md. Johurul Islam Kamaruzzaman Mst. Toma Khatun Md. Abdul Gafur Md. Shahriar Bashar Md. Monjarul Alam 《Materials Sciences and Applications》 2021年第12期578-594,共17页
Tin oxide (SnO2) thin films were deposited on glass substrate by Chemical Bath Deposition (CBD), Drop-Cast and Dip-Coating method. The thin films were post-annealed at 500&deg;C for 2 hours. The structural, optica... Tin oxide (SnO2) thin films were deposited on glass substrate by Chemical Bath Deposition (CBD), Drop-Cast and Dip-Coating method. The thin films were post-annealed at 500&deg;C for 2 hours. The structural, optical, and electrical properties of the SnO2 thin films were investigated by using XRD, FTIR, SEM, EDX, UV-Vis spectroscopy, and Electrometer experiment. The XRD patterns of SnO2 thin films deposited on glass substrate by CBD method, Drop-Cast method and Dip-Coating method showed cubic, tetragonal and amorphous structures respectively. The FTIR spectrum exhibited the strong presence of SnO2 with the characteristic vibrational mode of Sn-O-Sn. The SEM analysis was observed that the surface morphology of the thin films toughly depends on the deposition methods of the SnO2 thin films. EDX measurement confirmed that the thin films are the composition of Tin (Sn) and Oxygen (O2). The optical band gap of SnO2 thin films deposited by CBD method, Drop-Cast method and Dip-Coating method is found to be 3.12 eV, 3.14 eV and 3.16 eV respectively. Thin films deposited by Dip-Coating method showed the highest band gap. The electrical results confirmed that the SnO2 thin films are good conductors and pursued Ohm’s Law. These properties of the SnO2 thin films brand are appropriate for application in solar cell assembly, gas sensor devices and transparent electrodes of panel displays. 展开更多
关键词 SnO2 Thin Film CBD Drop-Cast and Dip-Coating Method Electrical
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