采用溶胶-凝胶法制备了Ag-TiO2光催化剂粉体,研究了不同制备条件对样品性能的影响,并以亚甲基蓝(MB)作为目标降解物,研究了其光催化性能,分析了Ag掺杂提高光催化性能的机理.结果表明,Ag离子的掺杂拓展了TiO2在可见光区的光谱响应范围,降低了光生电子和空穴的复合几率；在普通日光灯下,当Ag的掺杂量为n(Ag):n(TiO2) =0.1％,热处理温度为400℃条件下制备的样品催化性能最好,其光催化活性显著高于Degussa P25.
参考文献
| [1] | Gole J L;Stout J D;Burda C et al.Highly efficient for mation of visible light tunable TiO2-x Nx photocatalysts and their transformation at the nanoscale[J].The Journal of Physical Chemistry(B)Materials Surfaces Interfaces & Physical,2004,108(04):1230-1240. |
| [2] | Tang JW;Durrant JR;Klug DR .Mechanism of photocatalytic water splitting in TiO2. Reaction of water with photoholes, importance of charge carrier dynamics, and evidence for four-hole chemistry[J].Journal of the American Chemical Society,2008(42):13885-13891. |
| [3] | Zolotavin, P;Permenova, E;Sarkisov, O;Nadtochenko, V;Azouani, R;Portes, P;Chhor, K;Kanaev, A .Two-photon luminescence enhancement of silver nanoclusters photodeposited onto mesoporous TiO2 film[J].Chemical Physics Letters,2008(4/6):342-346. |
| [4] | Carmen Lazau;Paula Sfirloaga;Corina Orha;Cornelia Ratiu;loan Grozescu .Development of a novel fast-hydrothermal method for synthesis of Ag-doped TiO_2 nanocrystals[J].Materials Letters,2011(2):337-339. |
| [5] | Amao Y;Yamada Y .Photovoltaic conversion using Zn chlorophyll derivative assembled in hydrophobic domain onto nanocrystalline TiO2 electrode[J].Biosensors & Bioelectronics: The International Journal for the Professional Involved with Research, Technology and Applications of Biosensers and Related Devices,2007(7):1561-1565. |
| [6] | M. R. Bayati;F. Golestani-Fard;A. Z. Moshfegh .Photo-Degradation of Methelyne Blue over V2O5-TiO2 Nano-Porous Layers Synthesized by Micro Arc Oxidation[J].Catalysis Letters,2010(1/2):162-168. |
| [7] | Ashkarran A A .Antibacterial properties of silver-doped TiO2 nanoparticles under solar simulated light[J].Journal of Theoretical and Applied Physics,2011,4(04):1-8. |
| [8] | Jesty Thomas;K. Praveen Kumar;K. R. Chitra .Synthesis of Ag Doped Nano TiO_2 as Efficient Solar Photocatalyst for the Degradation of Endosulfan[J].Advanced Science Letters,2011(1):108-114. |
| [9] | 李静玲,陈文哲,吴波,黄世震,林伟,李世平,曹小霞,翁晴,王敏.银掺杂TiO_2纳米管制备与性能研究[J].功能材料,2012(08):953-957. |
| [10] | Jiayan Yan;Huaihe Song;Shubin Yang;Jingdan Yan;Xiaohong Chen .Preparation and electrochemical properties of composites of carbon nanotubes loaded with Ag and TiO{sub}2 nanoparticle for use as anode material in lithium-ion batteries[J].Electrochimica Acta,2008(22):6351-6355. |
| [11] | Ding Z;Lu G Q;Greenfield P F .Role of the crystallite phase of TiO2 in heterogeneous photocatalysis for phenol oxidation in vater[J].Journal of Physical Chemistry B,2000,104(19):4815-4820. |
| [12] | Burgos M;Langlet M .Condensation and densitification mechanism of sol gel TiO2 layers at low temperature[J].Journal of Sol-Gel Science and Technology,1999,16(03):267-276. |
| [13] | Bezrodna T.;Puchkovska G.;Shimanovska V.;Chashechnikova I.;Khalyavka T.;Baran J. .Pyridine-TiO2 surface interaction as a probe for surface active centers analysis[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2003(1/4):222-231. |
| [14] | T.Lopez;J.A.Moreno;R.Gomez;X.Bokhimi;J.A.Wang;H.Yee-Madeira;G.Pecchi;P.Reyes .Characterization of iron-doped titania sol-gel materials[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2002(3):714-718. |
| [15] | Yali Yuan;Jianqiang Ding;Jinsheng Xu;Jian Deng;Jianbo Guo .TiO_2 Nanoparticles Co-Doped with Silver and Nitrogen for Antibacterial Application[J].Journal of nanoscience and nanotechnology,2010(8):4868-4874. |
| [16] | Gong Changjie .First-principles study on anatase TiO2 doping by noble metals and noble metals:nitrogen[D].Kunming:Graduate School of Yunnan University,2011. |
| [17] | Hideki Sakai;Takashi Kanda;Hirobumi Shibata;Takahiro Ohkubo;Masahiko Abet' .Preparation of Highly Dispersed Core/Shell-type Titania Nanocapsules Containing a Single Ag Nanoparticle[J].Journal of the American Chemical Society,2006(15):4944-4945. |
| [18] | Zhang L D;Mo C M .Luminescence in nanostructured materials[J].Nano-Structured Materials,1995,6(5-8):831-834. |
| [19] | Fujihara Kan .Time-resolved photoluminescence of particulate TiO_2 photocatalysts suspended in aqueous solutions[J].Journal of Photochemistry and Photobiology, A. Chemistry,2000(1/2):99-104. |
| [20] | K. Koci;K. Mateju;L Obalova .Effect of silver doping on the TiO2 for photocatalytic reduction of CO2[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2010(3/4):239-244. |
| [21] | 罗妮,王宁,张昭.多孔Ag/TiO2的制备及其光催化性研究[J].功能材料,2007(07):1143-1145,1148. |
| [22] | A. Valentine Rupa;D. Manikandan;D. Divakar;T. Sivakumar .Effect of deposition of Ag on TiO_2 nanoparticles on the photodegradation of Reactive Yellow-17[J].Journal of hazardous materials,2007(3):906-913. |
| [23] | 尤先锋,陈锋,张金龙,黄家桢,张利中.银促进的TiO2光催化降解甲基橙[J].催化学报,2006(03):270-274. |
| [24] | 杜记民,王卫民,时琳,徐磊.Ag掺杂TiO2纳米材料的合成、表征及光催化性能[J].化工新型材料,2011(09):36-39. |
| [25] | 彭振山,韦宗元,李明,吕桃林,蔡铁军.银掺杂TiO2催化剂的制备表征及其光催化消除甲醇[J].湖南科技大学学报(自然科学版),2009(01):111-115. |
| [26] | 侯新刚,薛彩红,哈敏.Ag+掺杂TiO2纳米粉体制备及光催化性能研究[J].粉末冶金技术,2008(04):291-295. |
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%