为提高TiO2的光催化活性,利用原位氧化聚合法制备聚2-氨基苯磺酸改性TiO2 (P2ABSA/TiO2)纳米颗粒,通过TEM、EDS、XRD、UV-Vis DRS和Photocurrent Test进行表征,以亚甲基蓝为模拟污染物,优化纳米材料制备条件,考察初始pH值和P2ABSA/TiO2浓度对光催化效果的影响,通过捕捉实验判定活性氧物种在光催化过程中的贡献.结果表明:P2ABSA/TiO2纳米颗粒最优制备条件为P2ABSA、TiO2和氧化剂的物质的量之比2∶1∶2、HC1浓度1.2 mol/L;TiO2表面存在一层P2ABSA膜,P2ABSA改性没有改变TiO2的物相和晶粒尺寸;P2ABSA/TiO2纳米颗粒对可见光的响应提高,光电流密度从18.3 μA/cm2提高到28.7 μA/cm2;溶液初始pH值由3.93升至11.36,亚甲基蓝脱色率由92.0％提高到99.0％,P2ABSA/TiO2纳米颗粒浓度最佳值为1.5 g/L;活性氧物种在光催化过程中的贡献大小顺序为·OH＞h+＞·O2,P2ABSA对TiO2的光敏化作用是P2ABSA/TiO2纳米颗粒光催化活性得到提高的主要原因.
参考文献
| [1] | Park, H.;Park, Y.;Kim, W.;Choi, W..Surface modification of TiO_2 photocatalyst for environmental applications[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2013:1-20. |
| [2] | 周琪;钟永辉;陈星;王岩;刘平;吴玉程.石墨烯/纳米TiO2复合材料的制备及其光催化性能[J].复合材料学报,2014(2):255-262. |
| [3] | 沈伟韧;赵文宽;贺飞;方佑龄.TiO2光催化反应及其在废水处理中的应用[J].化学进展,1998(4):349-361. |
| [4] | Xiangcun Li;Guanglan Jiang;Gaohong He.Preparation of porous PPy—TiO2 composites: Improved visible light photoactivity and the mechanism[J].Chemical engineering journal,2014:480-489. |
| [5] | F.B.Li;X.Z.Li;M.F.Hou.Photocatalytic degradation of 2-mercaptobenzothiazole in aqueous La~(3+)-TiO_2 suspension for odor control[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20043(3):185-194. |
| [6] | 陈苗;敖卫;王如意;刘嘉宁;张高文.氮掺杂TiO2中空复合微球的制备及可见光光催化性能[J].复合材料学报,2015(3):918-923. |
| [7] | Di Li;Wenjun Dong;Shangmei Sun.Photocatalytic Degradation of Acid Chrome Blue K with Porphyrin-Sensitized TiO2 under Visible Light[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200838(38):14878-14882. |
| [8] | Reddy, Kakarla Raghaya;Hassan, Mahbub;Gomes, Vincent G..Hybrid nanostructures based on titanium dioxide for enhanced photocatalysis[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2015:1-16. |
| [9] | 杨传玺;董文平;乔光明;王炜亮.二氧化钛改性及应用研究进展[J].化工新型材料,2015(10):27-29. |
| [10] | Hai-chao Liang;Xiang-zhong Li.Visible-induced photocatalytic reactivity of polymer-sensitized titania nanotube films[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20091/2(1/2):8-17. |
| [11] | Zhu, Y.;Dan, Y..Photocatalytic activity of poly(3-hexylthiophene)/titanium dioxide composites for degrading methyl orange[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,201010(10):1658-1664. |
| [12] | GAOZU LIAO;SHUO CHEN;XIE QUAN.Photonic Crystal Coupled TiO2/ Polymer Hybrid for Efficient Photocatalysis under Visible Light Irradiation[J].Environmental Science & Technology: ES&T,20109(9):3481-3485. |
| [13] | Desong Wang;Yanhong Wang;Xueyan Li.Sunlight photocatalytic activity of polypyrrole-TiO2 nanocomposites prepared by'in situ'method[J].Catalysis Communications,20086(6):1162-1166. |
| [14] | Wang, F.;Min, S.;Han, Y.;Feng, L..Visible-light-induced photocatalytic degradation of methylene blue with polyaniline-sensitized TiO_2 composite photocatalysts[J].Superlattices and microstructures,20102(2):170-180. |
| [15] | Wang, Y.;Xu, J.;Zong, W.;Zhu, Y..Enhancement of photoelectric catalytic activity of TiO_2 film via Polyaniline hybridization[J].Journal of Solid State Chemistry,20116(6):1433-1438. |
| [16] | Teng, Ying;Fan, Limei;Dai, Yunlong;Zhong, Min;Lu, Xiaojing;Kan, Xianwen.Electrochemical sensor for paracetamol recognition and detection based on catalytic and imprinted composite film[J].Biosensors & Bioelectronics: The International Journal for the Professional Involved with Research, Technology and Applications of Biosensers and Related Devices,2015:137-142. |
| [17] | Qiaoling Li;Cunrui Zhang;Jianqiang Li.Photocatalysis and wave-absorbing properties of polyaniline/TiO_2 microbelts composite by in situ polymerization method[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,20103(3):944-948. |
| [18] | 杨传玺;董文平;王炜亮;崔官伟;成杰民;鞠甜甜;张明.导电聚合物改性TiO2光催化剂合成及应用研究进展[J].化工新型材料,2015(1):226-228. |
| [19] | 任学昌;念娟妮;王雪姣;王拯;刘鹏宇;常青.TiO2/PPY/Fe3O4的水热法制备及其光催化与磁回收性能[J].中国环境科学,2012(5):863-868. |
| [20] | Gaozu Liao;Shuo Chen;Xie Quan.Remarkable improvement of visible light photocatalysis with PANI modified core-shell mesoporous TiO2 microspheres[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20111/2(1/2):126-131. |
| [21] | Zhang H;Zong RL;Zhao JC;Zhu YF.Dramatic visible photocatalytic degradation performances due to synergetic effect of TiO2 with PANI[J].Environmental Science & Technology: ES&T,200810(10):3803-3807. |
| [22] | Yangming Lin;Junhua Hu;Danzhen Li.Highly Efficient Photocatalytic Degradation of Organic Pollutants by PANI-Modified TiO2 Composite[J].The journal of physical chemistry, C. Nanomaterials and interfaces,20129(9):5764-5772. |
| [23] | Michael R. Hoffmann;Scot T. Martin;Wonyong Choi;Detlef W. Bahnemann.Environmental Applications of Semiconductor Photocatalysis[J].Chemical Reviews,19951(1):69-96. |
| [24] | Maria Stylidi;Dimitris I.Kondarides;Xenophon E.Verykios.Pathways of solar light-induced photocatalytic degradation of azo dyes in aqueous TiO_2 suspensions[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20034(4):271-286. |
| [25] | Xueyan Li;Desong Wang;Guoxiang Cheng.Preparation of polyaniline-modified TiO2 nanoparticles and their photocatalytic activity under visible light illumination[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20083/4(3/4):267-273. |
| [26] | Mohamed A. Salem;Ahmed F. Al-Ghonemiy;Ahmed B. Zaki.Photocatalytic degradation of Allura red and Quinoline yellow with Polyaniline/TiO2 nanocomposite[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,20091/2(1/2):59-66. |
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