| Bi掺杂In2TiO5纳米带的制备及其光催化性能 |
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| 引用本文： | 张钦库,姚秉华,张亚宁,张亭. Bi掺杂In2TiO5纳米带的制备及其光催化性能[J]. 环境科学学报, 2016, 36(7): 2436-2442 |
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| 作者姓名： | 张钦库 姚秉华 张亚宁 张亭 |
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| 作者单位： | 1. 西安理工大学应用化学系, 西安 710048;2. 榆林学院建筑工程系, 榆林 719000,1. 西安理工大学应用化学系, 西安 710048;2. 陕西省尾矿资源综合利用重点实验室(商洛学院), 商洛 726000,榆林学院建筑工程系, 榆林 719000,西安理工大学应用化学系, 西安 710048 |
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| 基金项目： | 国家自然科学基金项目（No.21276208），陕西省尾矿资源综合利用重点实验室（商洛学院）开放基金项目（No.2014SKY-WK003），陕西省教育厅专项基金项目（No.15JK1862）和西安理工大学博士学位论文创新基金项目（No.310-252071508） |
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| 摘 要： | 以Bi(NO_3)_3、Ti(OC_4H_9)_4、In(NO_3)_3和聚乙烯吡咯烷酮(PVP-K30)为原料,采用静电纺丝法和沉淀法相结合,成功制备了Bi掺杂In_2TiO_5(Bi-In_2TiO_5)纳米带.利用X射线衍射(XRD)、扫描电子显微镜(SEM)、X射线能量色散谱(EDS)、紫外-可见漫反射光谱(UV-vis DRS)和氮气吸附-脱附等温线(BET)等技术对样品进行表征.结果表明,Bi的掺杂未引入新的杂相,样品均为正交晶系结构,掺杂前后样品的形貌未发生明显变化.适量的Bi掺杂,在In2Ti O5晶格中形成杂质能级,降低了In_2TiO_5的带隙能.当掺杂量为2%时,制备的Bi-In_2TiO_5纳米带的光催化活性最高.在氙灯(150 W)辐照下,150 min,对罗丹明B的降解率达95.8%,且该催化剂对氟喹诺酮类抗生素左氧氟沙星(LEV)也表现出优良的光催化降解性能.
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| 关 键 词： | Bi掺杂 In2TiO5纳米带 光催化 降解 |
| 收稿时间： | 2015-10-12 |
| 修稿时间： | 2015-11-23 |
Preparation of Bi-doped In2TiO5 nanobelt and its photocatalytic activity |
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| ZHANG Qinku,YAO Binghu,ZHANG Yaning and ZHANG Ting. Preparation of Bi-doped In2TiO5 nanobelt and its photocatalytic activity[J]. Acta Scientiae Circumstantiae, 2016, 36(7): 2436-2442 |
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| Authors: | ZHANG Qinku YAO Binghu ZHANG Yaning ZHANG Ting |
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| Affiliation: | 1. Department of Applied Chemistry, Xi''an University of Technology, Xi''an 710048;2. Department of Building Engineering, Yulin University, Yulin 719000,1. Department of Applied Chemistry, Xi''an University of Technology, Xi''an 710048;2. Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources (Shangluo University), Shangluo 726000,Department of Building Engineering, Yulin University, Yulin 719000 and Department of Applied Chemistry, Xi''an University of Technology, Xi''an 710048 |
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| Abstract: | Bi-In2TiO5 nanobelts were successfully synthesized by using electrospinning and precipitation method with Bi(NO3)3, Ti(OC4H9)4, In(NO3)3 and PVP-K30 as the raw materials. The obtained samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), UV-visible diffuse reflectance spectroscopy (UV-vis DRS) and N2 adsorption-desorption isotherms (BET). The results show that the samples possess the orthorhombic structure without any secondary phases, and Bi dopant does not change the crystal structure of In2TiO5. SEM result reveals a nanobelt-like morphology of the prepared In2TiO5.With the increase of Bi content, the light adsorption onset of Bi-In2TiO5 shifts from 356 nm to 377 nm, revealing significant narrowing of the band gap. When Bi-doped content was up to 2%, the Bi-In2TiO5 nanobelts exhibited the highest photocatalytic activity and the degradation rate of RhB reached 95.8% under Xenon lamp (150 W) irradiation for 150 min. compared to pure In2TiO5, Bi-In2TiO5 also exhibited excellent photocatalytic activity for the degradation of fluoroquinolone antibiotic Levofloxacin (LEV). |
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| Keywords: | Bi-doped In2TiO5 nanobelts photocatalysis degradation |
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