本文采用溶胶-凝胶法低温合成锐钛矿型纳米TiO2.探讨了水量及热晶化处理方式对纳米TiO2结构及性能的影响,通过XRD、HRTEM和亚甲基蓝溶液的脱色率对纳米TiO2的晶型和光催化能力进行表征.其结果表明,随着水量的增加,所制备的TiO2纳米晶结构由无定型晶转化为锐钛矿型晶体,其结晶度和光催化能力随着水量的增加而增强.与普通150℃干燥的纳米TiO2相比,溶胶经过汽蒸热晶化处理后得到的TiO2纳米晶具有很高的结晶度和光催化活性,在紫外光照1.Sh后,对亚甲基蓝的脱色率达97.1％.
参考文献
| [1] | 王彬,闫军,杜仕国,崔海萍.低温下纳米TiO2制备研究进展[J].表面技术,2007(06):66-69. |
| [2] | 向洪平,沈汝梁,邓浩强,戴如勇,吕俊佳,葛建芳.TiO2溶胶稳定化制备工艺及机理研究[J].硅酸盐通报,2011(01):83-88. |
| [3] | M. A. Willard;L. K. Kurihara;E. E. Carpenter .Chemically prepared magnetic nanoparticles[J].International Materials Reviews,2004(3/4):125-170. |
| [4] | Verma A;Basu A;Bakhshi AK;Agnihotry SA .Structural, optical and electrochemical properties of sol-gel derived TiO2 films: Annealing effects[J].Solid state ionics,2005(29/30):2285-2295. |
| [5] | Young Jin Yun;Jin Suk Chung;Sunwook Kim .Low-temperature coating of sol-gel anatase thin films[J].Materials Letters,2004(29):3703-3706. |
| [6] | Hu Y;Yuan CW .Low-temperature preparation of photocatalytic TiO2 thin films from anatase sols[J].Journal of Crystal Growth,2005(3/4):563-568. |
| [7] | Leo Chau-Kuang LlAU;Hsuan CHANG;Thomas Chun-Kuang YANG;Chien-Lung HUANG .Kinetic Investigation of Photocatalytic TiO_2 Films Prepared by the Sol-Gel Method and Low Temperature Treatments[J].Journal of Chemical Engineering of Japan,2005(10):813-817. |
| [8] | D.-S.Lee;T.-K.Liu .Preparation of TiO_2 Sol using TiCl_4 as a precursor[J].Journal of Sol-Gel Science and Technology,2002(2):121-136. |
| [9] | 董国义,高琳洁,王颖,刘清波,李志强,韦志仁.蒸汽处理钛酸制备锐钛矿相TiO2纳米晶体的光催化性能[J].人工晶体学报,2011(06):1489-1493,1499. |
| [10] | 林中信,万隆,张世英,李云龙,方志薇.玻璃纤维负载纳米TiO2的制备及光催化性能[J].硅酸盐通报,2011(01):136-139,146. |
| [11] | 高基伟 .宽光谱激发的锐钛矿溶胶的低温制备及结构、性能表征[D].浙江大学,2006. |
| [12] | 李红 .二氧化钛纳米晶的溶胶法低温制备机理及其掺杂研究[D].浙江大学,2009. |
| [13] | Qi KH;Daoud WA;Xin JH;Mak CL;Tang WZ;Cheung WP .Self-cleaning cotton[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2006(47):4567-4574. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%