以四氯化钛为钛源、十六烷基三甲基溴化铵为模板剂、氯铂酸为掺杂离子、导电碳毡为载体,通过水热合成法制得液晶-Pt离子-无机物钛前驱体溶液,在超声波辅助下采用浸渍提拉法进行负载,在氮气保护下焙烧得到导电碳毡负载铂掺杂介孔TiO2(TiO2-Pt/CCF)光电极,利用现代表征手段对材料结构进行表征.以苯甲醛为目标降解物,对材料的光电催化活性进行研究,并分析了光电协同机制.结果表明:介孔化处理提高了TiO2-Pt/CCF的比表面积,增大了降解反应的有效面积和催化剂表面降解物浓度;金属离子掺杂引入了杂质能级,减小了TiO2的能带隙,同时,Pt充当着光生电子-空穴捕获阱,阻止电子-空穴对的复合,提高了TiO2-Pt/CCF的光电催化效率;TiO2固载化提高了对目标降解物的吸附和表面电子转移.在多功能的协同改性下,TiO2-Pt/CCF比无孔TiO2/CCF和介孔TiO2/CCF有更高的催化活性.
参考文献
| [1] | Jianyu Gong;Changzhu Yang;Wenhong Pu.Liquid phase deposition of tungsten doped TiO2 films for visible light photoelectrocatalytic degradation of dodecyl-benzenesulfonate[J].Chemical engineering journal,20111(1):190-197. |
| [2] | 郁萍华;张顺花;毛雄亮;张如心;杨勉.SiO2包覆改性纳米TiO2粒子对聚丙烯拉伸流变性能和结晶行为的影响[J].复合材料学报,2015(5):1361-1366. |
| [3] | Dianbo Dong;Peijun Li;Xiaojun Li.Photocatalytic degradation of phenanthrene and pyrene on soil surfaces in the presence of nanometer rutile TiO2 under UV-irradiation[J].Chemical engineering journal,20103(3):378-383. |
| [4] | Emad S. Elmolla;Malay Chaudhuri.Photocatalytic degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution using UV/TiO2 and UV/H2O2/TiO2 photocatalysis[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20101/3(1/3):46-52. |
| [5] | Huanjun Zhang;Guohua Chen;Detlef W. Hahnemann.Photoelectrocatalytic materials for environmental applications[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,200929(29):5089-5121. |
| [6] | 安兴才;刘刚;韩立娟;陈作雁.V-N共掺杂TiO2/凹凸棒土光催化复合材料的制备及光催化性能[J].复合材料学报,2014(2):423-428. |
| [7] | Young Ku;Ping-Chin Chiu;Yiang-Chen Chou.Decomposition of aniline in aqueous solution by UV/TiO2 process with applying bias potential[J].Journal of hazardous materials,20101/3(1/3):16-21. |
| [8] | 刘红玲;彭俊军;李明;杨锋.玻璃固载TiO2/纳米纤维素复合薄膜的制备及其光催化性能[J].复合材料学报,2013(4):163-169. |
| [9] | Nguyen HT;Miao L;Tanemura S;Tanemura M;Toh S;Kaneko K;Kawasaki M.Structural and morphological characterization of anatase TiO2 coating on inverted iota-alumina scale fiber fabricated by sol-gel dip-coating method[J].Journal of Crystal Growth,20041/2(1/2):245-251. |
| [10] | Sheng-ying Ye;Sheng-wen Shen;Lu-meng Ye;Xian-liang Song;Shu-can Luo.Enhancement of the photoelectrocatalytic activity of TiO_2/ACF for ethylene removal by Ag nanoparticles synthesized by γ-ray radiolysis[J].Materials science in semiconductor processing,2014:397-403. |
| [11] | Sun RB;Xi ZG;Chao FH;Zhang W;Zhang HS;Yang DF.Decomposition of low-concentration gas-phase toluene using plasma-driven photocatalyst reactor[J].Atmospheric environment,200732(32):6853-6859. |
| [12] | Ting Guo;Zhipeng Bai;Can Wu.Influence of relative humidity on the photocatalytic oxidation (PCO) of toluene by TiO2 loaded on activated carbon fibers: PCO rate and intermediates accumulation[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20082(2):171-178. |
| [13] | Yanfang Shen;Tianying Xiong;Tiefan Li.Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20083/4(3/4):177-185. |
| [14] | Wey Yang Teoh;Rose Amal;Lutz Madler.Flame sprayed visible light-active Fe-TiO_2 for photomineralisation of oxalic acid[J].Catalysis Today,20072(2):203-213. |
| [15] | Hua-Wei Chen;Young Ku;Yu-Lin Kuo.Effect of Pt/TiO_2 characteristics on temporal behavior of o-cresol decomposition by visible light-induced photocatalysis[J].Water research: A journal of the international water association,200710(10):2069-2078. |
| [16] | Linsebigler A;Rusu C;Yates JT.ABSENCE OF PLATINUM ENHANCEMENT OF A PHOTOREACTION ON TIO2-CO PHOTOOXIDATION ON PT/TIO2(110)[J].Journal of the American Chemical Society,199622(22):5284-5289. |
| [17] | Hiromitsu Nakajima;Toshiyuki Mori;Mamoru Watanabe.Influence of platinum loading on photoluminescence of TiO_(2) powder[J].Journal of Applied Physics,20041(1):925-927. |
| [18] | 徐鹏;李佑稷;刘晨;李铭;邓瑞成;匡美容.银掺杂介孔二氧化钛的制备及可见光催化性能[J].硅酸盐学报,2014(9):1195-1202. |
| [19] | Wei Zhou;Fanfei Sun;Kai Pan;Guohui Tian;Baojiang jiang;Zhiyu Ren;Chungui Tian;Honggang Fu.Weil-Ordered Large-Pore Mesoporous Anatase TiO_2 with Remarkably High Thermal Stability and Improved Crystallinity: Preparation, Characterization,and Photocatalytic Performance[J].Advanced functional materials,201110(10):1922-1930. |
| [20] | 冷文华;张昭;成少安;张鉴清;曹楚南.光电催化降解苯胺的研究--外加电压的影响[J].环境科学学报,2001(6):710-714. |
| [21] | D.Uner;N.A.Tapan;I.Ozen;M.Uner.Oxygen adsorption on Pt/TiO_2 catalysts[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,20032(2):225-234. |
| [22] | 黄济超 .具有光热协同作用的纳米TiO2及Pt/TiO2复合光催化剂的制备和气相光催化性能[D].武汉理工大学,2010. |
| [23] | 李冬 .TiO2负载型催化剂的制备及其降解低浓度H2S的实验研究[D].西安建筑科技大学,2007. |
| [24] | 曹宇;张建军;严干贵;倪牮;李天微;黄振华;赵颖.电极间距对μc-Si1-xGex：H薄膜结构特性的影响[J].物理学报,2014(7):076801-1-076801-6. |
| [25] | 方涛;杨超;廖丽霞;景瑛琦.纳米ZnO/Ni电极的制备及光电催化性能研究[J].水处理技术,2012(2):45-48. |
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%