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TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能

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任学昌, 马学琴, 任晓亮, 王拯, 刘鹏宇, 常青. TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能[J]. 环境化学, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
引用本文: 任学昌, 马学琴, 任晓亮, 王拯, 刘鹏宇, 常青. TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能[J]. 环境化学, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
shu
REN Xuechang, MA Xueqin, REN Xiaoliang, WANG Zheng, LIU Pengyu, CHANG Qing. Preparation of TiO2/PANI/Fe3O4 by low temperature hydrothermal method and its photocatalytic activity and magnetic recovery characteristic[J]. Environmental Chemistry, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
Citation: REN Xuechang, MA Xueqin, REN Xiaoliang, WANG Zheng, LIU Pengyu, CHANG Qing. Preparation of TiO2/PANI/Fe3O4 by low temperature hydrothermal method and its photocatalytic activity and magnetic recovery characteristic[J]. Environmental Chemistry, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
shu

TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能

  • 1.

    兰州交通大学环境与市政工程学院, 寒旱地区水资源综合利用教育部工程研究中心, 兰州, 730070

  • 基金项目:

    国家自然科学基金项目(51068016)资助；中国博士后科学基金第五十批面上项目(2011M501493)资助；国家自然科学基金项目(51268026)资助。

Preparation of TiO2/PANI/Fe3O4 by low temperature hydrothermal method and its photocatalytic activity and magnetic recovery characteristic

  • 1.

    School of Environmental & Municipal Engineering, Lanzhou Jiaotong University, Engineering Research Center for Cold and Arid Regions Water Resource Comperehensive Utilization of the Ministry of Education, Lanzhou, 730070, China

  • Fund Project:

  • 摘要: 以原位化学氧化法在Fe3O4粒子表面负载了聚苯胺(PANI)，制得了磁性微球PF(PANI/Fe3O4)，并以PF为载体用低温水热法(170℃)在其表面负载了TiO2，最终得到壳/壳/核结构的复合光催化剂TPF[(nTiO2∶nPANI∶nFe3O4)=77∶6∶1].用X射线衍射仪(XRD)、透射电子显微镜(TEM)、傅里叶红外分光光度计(FT-IR)、振动样品磁强计(VSM)对样品物相组成、形貌、表面性质、磁学性质进行了表征和分析.以25 mg·L-1的苯酚为模拟污染物考察其催化活性，以自制的磁回收装置考察磁回收率.结果表明，TiO2粒径在5—8 nm之间，具有锐钛矿和金红石混晶结构;PANI负载在磁核Fe3O4表面可降低磁粒子的团聚作用，使TiO2能更均匀地负载在PANI/Fe3O4表面;复合催化剂TPF具有良好的壳/壳/核结构和超顺磁性，其磁感应强度为4.93 emu·g-1;TPF对苯酚的光催化降解符合伪一级反应动力学，其中纯TiO2、P25和TPF反应速率常数K值分别为0.04381、0.04196、0.02292，TPF循环使用5次和10次之后K值为0.01978、0.01896，活性略有降低，循环使用平均回收率可达92.03%.该法制备的磁载光催化剂TPF具有优良的催化活性和磁回收性能，具有良好的应用前景.
    Abstract: Magnetic photocatalytic composite particles—titania (photoactive shell)/polyaniline (intermediate layer)/ferroferric oxide (magnetic core) (TiO2/PANI/Fe3O4, TPF) were prepared by hydrothermal methods. The prepared composite particles were characterized X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM) and Zetasizer. The photocatalytic activity of the catalysts was evaluated by photocatlytic degradation of phenol (25 mg·L-1), and their magnetic recovery rate was measured by a magnetic recycling equipment. The results indicated that the samples were mix-crystal TiO2 with anatase phase and rutile phase,and its particle size was 5—8 nm. Polyaniline kept the magnetic Fe3O4 dispersed to ensure uniform TiO2 coating on PF during the process of tetrabutyl titanate hydrolysis. The composite photocatalyst TPF(nTiO2∶nPANI∶nFe3O4=77∶6∶1) exhibited excellent shell/shell/core structure and superparamagnetism, and its magnetic induction was 4.93 emu·g-1. The photocatalytic degradation reation of phenol obeyed pseudo-first order reaction kinetics, and the reaction constants K of the TiO2, P25 and TPF were 0.04381,0.04196 and 0.02292. After 5 and 10 times repeated use, the reaction constant K of TPF decreased slighty to 0.01978, 0.01896. The magnetic recycling rate was 92.03%. Therefore, the magnetic composite photocatalyst had high activity and magnetic recyclability.
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  • [1] O'Regan B, Gratzel M. A low-cost high-efficiency solar cell based on dye-sensitized colloidal TiO2 films[J].Nature, 1991, 353:737-740
    [2] Barbe C J, Arendse F, Comte P, et al. Nanocrystalline titanium oxide electrodes for photovoltaic applications[J].American Ceramic Society,1997,80(12):3157-3171
    [3] Jingjing Xue, Yanhui Aoa, Degang Fua, et al. Low-temperature preparation of anatase titania-coated magnetite[J].Physics and Chemistry of Solids, 2008,69,1980-1984
    [4] Kim T K, Lee M N, Lee S H, et al. Development of surface coating technology of TiO2 powder and improvement of photocatalytic activity by surface modification[J]. Thin Solid Films, 2005, 47(5): 171-177
    [5] Carp O, Huisman C L, Reller A. Photoinduced reactivity of titanium dioxide [J].Progress Solid State Chemistry,2004,(32):33-38
    [6] Zoppi R A, Trasferetti B C, Davanzo C V. Sol-gel titanium dioxide thin films on platinum substrates preparation and charcaterization [J].Electroanalytical Chemistry,2003,544: 47
    [7] 李炜罡,霍冀川,刘树信,等.负载型TiO2光催化剂研究进展[J].陶瓷学报,2004,25(2):133-138
    [8] Myacetictov A.D,LevO.Photocatalytic oxidation of 2,4-dichlorophenoxyacetic acid with titania photocatalyst: Comparison of supported and suspended TiO2[J].Photobiology A:Chemistry,1998,112:261-270
    [9] Martra G, Coluccia S, Marchese L,et al. The role of H2O in the photocatalytic oxidation of toluene in vapour phase on anatase TiO2 Catalyst A FTIR study[J]. Catalysis Today, 1999, (53):695-699
    [10] Rachel A, Subrahmanyam M, Boule P. Comparison of photocatalytic efficiencies of TiO2 in suspended and immoblised form for the photocatalytic degradation of nitrobenzene sulfonic acids[J].Applied Catalysis B:Environmental,2002,37(4):301-305
    [11] Yanhui Ao, JingJing Xu, Degang Fu, et al. Low temperature preparation of anatase TiO2 coated activated carbon [J].Colloids and Surfaces A,2008,312:125-130
    [12] 李鸿,朱宝林,郑修成.包覆型磁性二氧化钛的制备及其光催化性能的研究[J].分子催化,2006, 34(10): 429-433
    [13] Rana S, Rawat J, Misra R D K. Anti-microbial active corn-posite nanoparticles with magnetic core and photocatalytic shell: TiO2/NiFe2O4 bio-material system[J].Acta Biomater,2005,1(6): 691
    [14] Fu Wuyou, Yang Haibin, Li Minghua. Preparation and photocatalytic characteristics of core-shell structure TiO2/BaFe12O19 nanoparticles[J].Materials Letters,2006,60: 27-23
    [15] 任学昌,于学华,刘宏飞,等.低温种子聚合法制备磁载纳米TiO2光催化剂及其对苯酚的光催化降解[J].环境化学,2011,30(3):609-615
    [16] 侯林瑞,原长洲,彭秧.磁载光催化Ag-TiO2/ZnO/γ-Fe2O3的制备及其光催化性能[J].应用学报,2006,23(11):1278-1281
    [17] Watson S, Beydoun D, Amal R. Synthesis of a novel magnetic photocatalyst by direct deposition of nanosized TiO2crystals onto a magnetic core[J].Photochemistry and Photobiology A: Chemistry, 2002, 148: 303-313
    [18] 包淑娟,张校刚,刘献明.磁载光催化TiO2/SiO2/Ni5Fe2O4的制备及其催化氧化性能[J].无机化学学报,2003,19(9): 925-928
    [19] 景遐斌,王利祥,王献红,等.导电聚苯胺的合成、结构、性能和应用[J].高分子学报,2005,5(5):601-605
    [20] Wenyan Xue, Kun Fang, Hong Qiu, et al. Electrical and magnetic properties of the Fe3O4-polyaniline nanocomposite pellets containing DBSA-doped polyaniline and HCl-doped polyaniline with Fe3O4 nanoparticles[J].Synthetic Metals,2006,156:506-509
    [21] Sanjeev Kumar, Vaishali Singh, Saroj Aggarwal, et al. Bimodal Co0.5Zn0.5Fe2O4/PANI nanocomposites: Synthesis, formation mechanism and magnetic properties[J].Composites Science and Technology, 2010,70: 249-254
    [22] Javed Alam, Ufana Riaz, Sharif Ahmad. Effect of ferrofluid concentration on electrical and magnetic properties of the Fe3O4/PANI nanocomposites[J]. Magnetism and Magnetic Materials, 2007,314:93 - 99
    [23] Quan-rong Geng, Rong-li Jiang. Preparation and research of Fe3O4 water-based magnetic fluid[J].Experiment Science and technology,2006,(4):11-14
    [24] Hongfan Guo, Hong Zhu, Haiyan Lin, et al. Polyaniline/Fe3O4 nanocomposites synthesized under the direction of cationic surfactant[J].Materials Letters,2008,62:2196-2199
    [25] 国家环境保护总局水和废水监测分析方法编委会编.《水和废水监测分析方法》[M].(第四版).北京:中国环境科学出版社,2002: 460-462
    [26]
    [27] 张彩红,盛毅,田红,等.全谱拟合法研究聚丙烯腈基碳纤维形成过程中晶态结构演变[J].物理学报.2011,3(0360101):1-9
    [28] Grutiner C, Tellerj, Schutt W,et al. Scientific and Clinical Applications of Magnetic Carriers [M].New York: Plenum Press,1997
    [29] Sobn B H, Cohen R E, Papaefthymiou G C. Magnetic properties of iron oxide nanoclusters within microdomains of block copolymers [J].Magnetic Materials,1998,182:216-224
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  • 收稿日期:  2013-02-27
任学昌, 马学琴, 任晓亮, 王拯, 刘鹏宇, 常青. TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能[J]. 环境化学, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
引用本文: 任学昌, 马学琴, 任晓亮, 王拯, 刘鹏宇, 常青. TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能[J]. 环境化学, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
shu
REN Xuechang, MA Xueqin, REN Xiaoliang, WANG Zheng, LIU Pengyu, CHANG Qing. Preparation of TiO2/PANI/Fe3O4 by low temperature hydrothermal method and its photocatalytic activity and magnetic recovery characteristic[J]. Environmental Chemistry, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
Citation: REN Xuechang, MA Xueqin, REN Xiaoliang, WANG Zheng, LIU Pengyu, CHANG Qing. Preparation of TiO2/PANI/Fe3O4 by low temperature hydrothermal method and its photocatalytic activity and magnetic recovery characteristic[J]. Environmental Chemistry, 2013, 32(11): 2149-2155. doi: 10.7524/j.issn.0254-6108.2013.11.019
shu

TiO2/PANI/Fe3O4的低温水热法制备及其光催化活性与磁回收性能

  • 1. 兰州交通大学环境与市政工程学院, 寒旱地区水资源综合利用教育部工程研究中心, 兰州, 730070
  • 收稿日期:  2013-02-27
基金项目:

国家自然科学基金项目(51068016)资助；中国博士后科学基金第五十批面上项目(2011M501493)资助；国家自然科学基金项目(51268026)资助。

摘要: 以原位化学氧化法在Fe3O4粒子表面负载了聚苯胺(PANI)，制得了磁性微球PF(PANI/Fe3O4)，并以PF为载体用低温水热法(170℃)在其表面负载了TiO2，最终得到壳/壳/核结构的复合光催化剂TPF[(nTiO2∶nPANI∶nFe3O4)=77∶6∶1].用X射线衍射仪(XRD)、透射电子显微镜(TEM)、傅里叶红外分光光度计(FT-IR)、振动样品磁强计(VSM)对样品物相组成、形貌、表面性质、磁学性质进行了表征和分析.以25 mg·L-1的苯酚为模拟污染物考察其催化活性，以自制的磁回收装置考察磁回收率.结果表明，TiO2粒径在5—8 nm之间，具有锐钛矿和金红石混晶结构;PANI负载在磁核Fe3O4表面可降低磁粒子的团聚作用，使TiO2能更均匀地负载在PANI/Fe3O4表面;复合催化剂TPF具有良好的壳/壳/核结构和超顺磁性，其磁感应强度为4.93 emu·g-1;TPF对苯酚的光催化降解符合伪一级反应动力学，其中纯TiO2、P25和TPF反应速率常数K值分别为0.04381、0.04196、0.02292，TPF循环使用5次和10次之后K值为0.01978、0.01896，活性略有降低，循环使用平均回收率可达92.03%.该法制备的磁载光催化剂TPF具有优良的催化活性和磁回收性能，具有良好的应用前景.

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