以酸处理的多壁碳纳米管(MWCNTs)为载体,采用水热合成法制备了InVO4/MWCNTs光催化剂.利用场发射扫描电镜、X射线粉末衍射、BET-N2吸附、傅里叶红外光谱和紫外-可见漫反射吸收光谱等技术对样品的形貌、晶相组成、比表面积和吸光性能等物理性质进行了表征,并以气相的苯作为模型污染物,研究催化剂样品在可见光(λ＞420 nm)照射下的光催化氧化能力.结果表明,InVO4颗粒均匀附着于MWCNTs,表面粒径约100nm.与纯InVO4相比,InVO4/MWCNTs的比表面积和可见光吸收性能显著提高.在可见光照射下,InVO4/MWCNTs具有良好的光催化活性,反应4 h光催化降解苯的转化率和矿化率分别为41.0%和43.4%,其转化率分别是InVO4的1.5倍和掺氮TiO2的3倍,InVO4/MWCNTs光催化活性的提高与载体MWCNTs良好的电子传输特性有关.
参考文献
| [1] | Wu L,Yu J C,Fu X.Characterization and photocatalytic mechanism of nanosized CdS coupled TiO2 nanocrystals under visible light irradiation.J.Mole.Catal.A:Chem.,2005,244(1/2):25-32. |
| [2] | Zou Z,Ye J,Arakawa H.Structural properties of InNbO4 and InTaO4:correlation with photocatalytic and photophysical properties.Chem.Phys.Lett.,2000,332(3/4):271-277. |
| [3] | Ye J,Zou Z,Arakawa H,et al.Correlation of crystal and electronic structures with photophysical properties of water splitting photocatalysts InMO4 (M = V5+,Nb5+,Ta5+).J.Photochem.Photobiol.A:Chem.,2002,148(1/2/3):79-83. |
| [4] | Ye J,Zou Z,Oshikiri M,et al.A novel hydrogen-evolving photocatalyst InVO4 active under visible light irradiation.Chem.Phys.Lett.,2002,356(3/4):221-226. |
| [5] | Zhang L,Fu H,Zhang C,et al.Synthesis,characterization,and photocatalytic properties of InVO4 nanoparticles.J.Solid State Chem.,2006,179(3):804-811. |
| [6] | 肖光参,鲁文升,李旦振,等(XIAO Guang-Can,et al).乙烯在纳米催化剂InVO4-TiO2上的可见光降解.无机化学学报(Chinese J.Inorg.Chem),2005,21(4):551-555. |
| [7] | Xiao G C,Wang X,Li D Z,et al.InVO4-sensitized TiO2 photocatalysts for efficient air purification with visible light.J.Photochem.Photobiol A:Chem.,2008,193(2/3):213-221. |
| [8] | Long R Q,Yang R T Carbon nanotubes as superior sorbent for dioxin removal.J.Am.Chem.Soc.2001,123(9):2058-2059. |
| [9] | Li Y,Wang S,Luan Z,et al.Adsorption of cadmium (Ⅱ) from aqueous solution by surface oxidized carbon nanobes.Carbon,2003,41(5):1057-1062. |
| [10] | Robel I,Bruker B A,Kamat P V.Single-walled carbon nanotube-CdS nanocomposites as light-harvesting assemblies:photoinduced,charge-transfer interactions.Adv.Mater.,2005,17(20):2458-2463. |
| [11] | Cai Z X,Yan X P.In situ electrostatic assembly of CdS nanoparticles onto aligned multiwalled carbon nanotubes in aqueous solution.Nanotechnology,2006,17(16):4212-4216. |
| [12] | 胥利先,马重芳,桑丽霞,等(XU Li-Xian,et al).高效可见光光催化分解水制氢催化剂InVO4/CNTs.催化学报(Chinese J.Catal.),2007,28(12):1083-1088. |
| [13] | Chen X,Wang X,Hou Y,et al.The effect of postnitridation annealing on the surface property and photocatalytic performance of N-doped TiO2 under visible light irradiation.J.Catal.,2008,255(1):59-67. |
| [14] | Sivalingam G,Nagaveni K,Madras G,et al.Kinetics of catalytic degradation of polycarbonate in benzene.Ind.Eng.Cherm Res.,2003,42(4):687-691. |
| [15] | Wang J H,Madhumita B R.Application of ultraviolet photooxidation to remove organic pollutants in the gas phase.Separation Purification Technology,2000,19(1/2):11-20. |
| [16] | Zhang J,Zou H,Qing Q.Effect of chemical oxidation on the structure of single-walled carbon nanotubes.J.Phys.Chem.B,2003,107(16):3712-3718. |
| [17] | 肖素芳,王宗花,罗国安.碳纳米管的功能化研究进展.分析化学,2005,33(2):261-266. |
| [18] | Hu J S,Ren L L,Guo Y G Mass production and high photocatalyric activity of ZnS nanoporous nanoparticles.Angew.Chem.Int.Ed.,2005,44(8):1269-1273. |
| [19] | 蒋丽,袁坚,上官文峰(JIANG Li,et al).新型光催化剂ZrW2O7(OH)2(H2O)2的光解水产氢产氧性能.无机材料学报(Journal of Inorganic Materials),2010,25(1):18-22. |
| [20] | 冯娟,杨足君,任正隆.溶液中多壁碳纳米管(MDDA)的电子激发态性质.中国科学(B辑),2005,35(5):363-367. |
| [21] | Hoffmann M R,Martin S T,Choi W Y,et al.Environmental applications of semiconductor photocatalysis.Chem.Rev.,1995,95(1):69-96. |
| [22] | Nakamura R,Tanaka T,Nakato y.Mechanism for visible light responses in anodic photocurrents at N-doped TiO2 film electrodes.J.Phys.Chem.B,2004,108(30):10617-10620. |
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%