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| 纳米TiO_2纤维的制备及其光催化降解甲醛研究 | |
| 引用本文： | 李静娜,焦利敏,廖学品,王安,石碧.纳米TiO_2纤维的制备及其光催化降解甲醛研究[J].环境科学与技术,2012,35(4):33-37. |
| 作者姓名： | 李静娜 焦利敏 廖学品 王安 石碧 |
| 作者单位： | 1. 四川大学建筑与环境学院环境系,四川成都,610065 2. 广州狮岭皮革皮具产业研究中心博士后科研工作站,广东广州,510850 3. 四川大学制革清洁技术国家工程实验室,四川 成都,610065 |
| 基金项目： | 全国百篇优秀博士论文奖励基金资助(FANCDD200762) |
| 摘 要： | 以胶原纤维为模板制备纳米TiO2纤维用于光助催化降解甲醛气体,用扫描电镜(SEM)、X射线衍射(XRD)和N2吸附-脱附技术对纳米TiO2纤维进行了表征。结果表明,纳米TiO2纤维的比表面积为11.33 m2/g,晶型为锐钛矿型。在相同催化反应条件下纳米TiO2纤维对甲醛气体的催化降解率与商品纳米TiO(2Degussa P25)催化剂相当。纳米TiO2纤维的用量、甲醛气体初始浓度是影响催化效果的两个因素。当甲醛气体初始浓度为0.270 mg/m3,相对湿度为38%,气体流速0.1 L/min,纳米TiO2纤维用量为1.0 g时,甲醛的降解率达到96%。因此,纳米TiO2纤维可用于室内甲醛气体的催化降解。 |
| 关 键 词： | 胶原纤维 模板 TiO2纤维 甲醛气体 光催化降解 |
Preparation of Nano TiO2 Fiber and Its Photocatalytic Degradation Behaviors to Formaldehyde |
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| LI Jing-na , JIAO Li-min , LIAO Xue-pin , WANG An , SHI Bi.Preparation of Nano TiO2 Fiber and Its Photocatalytic Degradation Behaviors to Formaldehyde[J].Environmental Science and Technology,2012,35(4):33-37. | |
| Authors: | LI Jing-na JIAO Li-min LIAO Xue-pin WANG An SHI Bi |
| Institution: | 1.Department of Environment Engineering,Sichuan University,Chengdu 610065,China;2.Postdoctoral Scientific Research Workstation of Leather & Products Industry,Shiling Leather & Products Industry Investigation Center,Guangzhou 510850,China;3.National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China) |
| Abstract: | Nano-TiO2 fiber was synthesized by using collagen fiber as template for the purpose of photo-assisted catalytic degradation of gaseous formaldehyde,and characterized by means of Scanning Electron Microscopy(SEM),N2 adsorption-desorption technique and X-ray Diffraction(XRD).It was discovered that the specific surface area of nano-TiO2 fiber was 11.33 m2/g.Compared with Degussa P25,the degradation efficiency of as prepared nano-TiO2 fiber to gaseous formaldehyde was paralleled in some extent.Nano-TiO2 fiber dosage and formaldehyde initial concentration,the two factors that greatly influence the degradation rate of formaldehyde.Irradiating at 254 nm of UV,the degradation rate was high up to 96% when nano-TiO2 dosage was 1.0 g,and the initial concentration of gaseous formaldehyde was 0.270 mg/m3 and flow rate was 0.1 L/min with 38% of humidity.Therefore,it is potential to use nano-TiO2 fiber for the catalytic degradation of gaseous formaldehyde in house. |
| Keywords: | collagen fiber template nano-TiO2 fiber formaldehyde photocatalytic degradation |
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