采用HCl水解钛酸四丁酯制备了可见光响应的氯掺杂TiO2光催化剂,并用X射线衍射线、透射电子显微镜、X射线光电子能谱(XPS)和紫外-可见漫反射吸收光谱等测试手段对其结构进行了表征.结果表明,氯元素的引入降低了无定形相向锐钛矿转变以及锐钛矿向金红石相转变的温度.300℃焙烧的氯掺杂TiO2吸收波长拓展到可见光区,且XPS证实氯元素以阴离子形式存在于TiO2晶格中.苯酚降解实验表明,在大于400 nm的可见光照射下,300℃焙烧的氯掺杂TiO2具有最佳的光催化活性,120 min时苯酚的降解率达到42.5%.
参考文献
| [1] | Carey J H;Lawrence J;Tosine H M .[J].Bulletin of Environmental Contamination and Toxicology,1976,16(06):697. |
| [2] | 籍宏伟,马万红,黄应平,赵进才,王正平.可见光诱导TiO2光催化的研究进展[J].科学通报,2003(21):2199-2204. |
| [3] | Asahi R;Morikawa T;Ohwaki T;Aoki K Taga Y .[J].Science,2001,293(5528):269. |
| [4] | 唐玉朝,黄显怀,俞汉青,胡春.N掺杂TiO2光催化剂的制备及其可见光活性研究[J].无机化学学报,2005(11):1747-1751. |
| [5] | Sakthivel S;Kisch H .[J].Angewandte Chemie International Edition,2003,42(40):4908. |
| [6] | Ohno T;Akiyoshi M;Umebayashi T;Asai K Mitsui T Matsumura M .[J].Applied Catalysis A:General,2004,265(01):115. |
| [7] | Hong X T;Wang Z P;Cai W M;Lu F Zhang J Yang Y Z Ma N Liu Y J .[J].Chemistry of Materials,2005,17(06):1548. |
| [8] | Zhao W;Ma W H;Chen C C;Zhao J C Shuai Z G .[J].Journal of the American Chemical Society,2004,126(15):4782. |
| [9] | Liu H Y;Gao L .[J].Chemistry Letters,2004,33(06):730. |
| [10] | 华南平,吴遵义,杜玉扣,邹志刚,杨平.Pt、N共掺杂TiO2在可见光下对三氯乙酸的催化降解作用[J].物理化学学报,2005(10):1081-1085. |
| [11] | Wang Z P;Cai W M;Hong X T;Zhao X L Xu F Cai C G .[J].Applied Catalysis B:Environmental,2005,57(03):223. |
| [12] | Yu JC.;Zhang LZ.;Yu JG. .Direct sonochemical preparation and characterization of highly active mesoporous TiO2 with a bicrystalline framework[J].Chemistry of Materials,2002(11):4647-4653. |
| [13] | Long MC;Cai WM;Wang ZP;Liu GZ .Correlation of electronic structures and crystal structures with photocatalytic properties of undoped, N-doped and I-doped TiO2[J].Chemical Physics Letters,2006(1-3):71-76. |
| [14] | 井立强,李晓倩,李姝丹,王百齐,辛柏福,付宏刚,王德军,蔡伟民.纳米Au/TiO2光催化剂的XPS和SPS研究[J].催化学报,2005(03):189-193. |
| [15] | Hurum D C;Agrios A G;Gray K A;Rajh T Thurnauer M C .[J].Journal of Physical Chemistry B,2003,107(19):4545. |
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%