采用溶胶凝胶法制备了多壁碳纳米管负载TiO2 (MWCNTs/TiO2),并利用透射电镜、X射线光电子能谱、X射线衍射和紫外-可见漫反射光谱对样品进行了表征.结果表明,MWCNTs/TiO2晶型以锐钛矿为主,MWCNTs的引入会限制TiO2晶粒的生长.另外,MWCNTs/TiO2的光吸收边向长波区域偏移.针对模拟烟气,在固定床光催化反应器中对采用涂覆处理的MWCNTs/TiO2的光催化脱硝性能进行了实验研究.结果表明,NO初始浓度较低时,光催化脱硝效率较高,SO2的存在可抑制光催化脱硝过程,而O2及H2O则有促进作用.在最佳实验条件(73 mg/m3 NO,8％ O2,5％ H2O)下,光催化脱硝效率可达46％.提出了光催化脱硝反应机理.
参考文献
| [1] | Liang Z Y;Ma X Q;Lin H;Tang Y T .[J].Applied Energy,2011,88:1120. |
| [2] | Sun W Y;Ding S L;Zeng S S;Su S J Jiang W J .[J].Journal of Hazardous Materials,2011,192:124. |
| [3] | Nguyen T D B;Lim Y I;Eom W H;Kim S J Yoo K S .[J].Computers & Chemical Engineering,2010,34:1580. |
| [4] | Bae S W;Roh S A;Kim S D .[J].CHEMOSPHERE,2006,65:170. |
| [5] | Roy S;Hegde M S;Madras G .[J].Applied Energy,2009,86:2283. |
| [6] | Maggos Th;Bartzis J G;Liakou M;Gobin C .[J].Journal of Hazardous Materials,2007,146:668. |
| [7] | Wang, HQ;Wu, ZB;Zhao, WR;Guan, BH .Photocatalytic oxidation of nitrogen oxides using TiO2 loading on woven glass fabric[J].Chemosphere,2007(2):185-190. |
| [8] | 赵莉,赵毅,韩静,宋立琴.光催化氧化脱除高浓度氮氧化物的实验研究[J].化学学报,2008(17):2001-2005. |
| [9] | Ananpattarachai J;Kajitvichyanukul P;Seraphin S .[J].Journal of Hazardous Materials,2009,168:253. |
| [10] | Li L;Yang Y L;Liu X R;Fan R Q Shi Y Li S Zhang L Y Fan X Tang P X Xu R Zhang W Z Wang Y Z Ma L Q .[J].Applied Surface Science,2013,265:36. |
| [11] | 李晓佩,陈锋,张金龙.酞菁改性的介孔TiO2的制备及其可见光光催化活性[J].催化学报,2007(03):229-233. |
| [12] | Paradise M;Goswami T .[J].Materials & Design,2007,28:1477. |
| [13] | Wang W D;Serp P;Kalck P;Silva C G Faria J L .[J].Materials Research Bulletin,2008,43:958. |
| [14] | 杨汉培,石泽敏,戴开静,段云平,吴俊明.碳纳米管的表面修饰及TiO2-CNTs复合催化剂的光催化性能[J].化学学报,2011(05):536-542. |
| [15] | Sannino D;Vaiano V;Ciambelli P;Eloy P Gaigneaux E M .[J].Applied Catalysis A: General,2011,394:71. |
| [16] | Li Z Y;Gao B;Chen G Z;Mokaya R Sotiropoulos S Puma G L .[J].Applied Catalysis B: Environmental,2011,110:50. |
| [17] | Cong Y;Li X K;Qin Y;Dong Z J Yuan G M Cui Z W Lai X J .[J].Applied Catalysis B: Environmental,2011,107:128. |
| [18] | Lin X X;Rong F;Fu D G;Yuan C W .[J].Powder Technology,2012,219:173. |
| [19] | Xin, BF;Wang, P;Ding, DD;Liu, J;Ren, ZY;Fu, HG .Effect of surface species on Cu-TiO2 photocatalytic activity[J].Applied Surface Science,2008(9):2569-2574. |
| [20] | 从野;秦云;李轩科;董志军 袁观明 崔正威 .[J].物理化学学报,2011,27:1509. |
| [21] | Ou Y;Lin JD;Fang SM;Liao DW .MWNT-TiO2 : Ni composite catalyst: A new class of catalyst for photocatalytic H-2 evolution from water under visible light illumination[J].Chemical Physics Letters,2006(1-3):199-203. |
| [22] | Smith J P;Urone P .[J].Environmental Science & Technology,1974,8:742. |
| [23] | Devahasdin S;Fan C Jr;Li K;Chen D H .[J].Journal of Photochemistry and Photobiology A: Chemistry,2003,156:161. |
| [24] | Yuan Y;Zhang J Y;Li H L;Li Y Zhao Y C Zheng C G .[J].CHEMICAL ENGINEERING JOURNAL,2012,192:21. |
| [25] | Kuo C Y .[J].Journal of Hazardous Materials,2009,163:239. |
| [26] | Kongkanand A;Dominguez RM;Kamat PV .Single wall carbon nanotube scaffolds for photoelectrochemical solar cells. Capture and transport of photogenerated electrons[J].Nano letters,2007(3):676-680. |
| [27] | Devi L G;Murthy B N;Kumar S G .[J].Materials Science and Engineering B,2010,166:1. |
| [28] | Li S C;Jacobson P;Zhao S L;Gong X Q Diebold U .[J].Journal of Physical Chemistry C,2012,116:1887. |
| [29] | Baltrusaitis J;Jayaweera P M;Grassian V H .[J].Journal of Physical Chemistry C,2010,115:492. |
| [30] | Lu S Y;Wang Q L;Buekens A G;Yan J H Li X D Cen K F .[J].CHEMICAL ENGINEERING JOURNAL,2012,195-196:233. |
| [31] | Wendt S;Matthiesen J;Schaub R;Vestergaard E K Lagsgaard E Besenbacher F Hammar B .[J].Physical Review Letters,2006,96:066107. |
| [32] | Henderson M A .[J].Surface Science Reports,2011,66:185. |
| [33] | Miller TM.;Grassian VH. .Heterogeneous chemistry of NO2 on mineral oxide particles: Spectroscopic evidence for oxide-coordinated and water-solvated surface nitrate[J].Geophysical Research Letters,1998(20):3835-3838. |
| [34] | Guan K S .[J].Surface and Coatings Technology,2005,191:155. |
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%