| Bi@Bi2Sn2O7/TiO2等离子体复合纤维的制备及增强的光催化产氢活性 |
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| 引用本文： | 李跃军,曹铁平,赵艳辉,孙大伟,王霞.Bi@Bi2Sn2O7/TiO2等离子体复合纤维的制备及增强的光催化产氢活性[J].无机化学学报,2019,35(8):1371-1378. |
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| 作者姓名： | 李跃军 曹铁平 赵艳辉 孙大伟 王霞 |
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| 作者单位： | 白城师范学院化学学院;吉林师范大学化学学院 |
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| 基金项目： | 国家自然科学基金（No.21573003）；国家级大学生创新创业训练计划项目（No.201810206003）资助。 |
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| 摘 要： | 以电纺TiO_2纳米纤维为基质,采用一步水热法合成了Bi@Bi_2Sn_2O_7/TiO_2等离子体复合纤维光催化剂。利用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、高分辨透射电镜(HRTEM)、紫外-可见漫反射(UV-Vis DRS)和光致发光光谱(PL)等分析测试手段对样品的物相、形貌和光电性能等进行表征。以三乙醇胺为电子给体,研究了Bi@Bi_2Sn_2O_7/TiO_2复合纤维光催化裂解水制氢的反应过程。结果表明:在水热过程中,Bi_2Sn_2O_7构筑在TiO_2纳米纤维表面形成p-n结的同时,部分Bi3+被葡萄糖还原成金属Bi沉积在Bi_2Sn_2O_7上。金属Bi的等离子体共振效应与p-n结的协同作用,有效提高了样品的光催化活性,产氢速率达到7.26 mmol·h~(-1)·g~(-1)。
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| 关 键 词： | 复合纤维 等离子体 光催化 制氢 |
| 收稿时间： | 2019/3/16 0:00:00 |
| 修稿时间： | 2019/6/8 0:00:00 |
Preparation of Bi@Bi2Sn2O7/TiO2 Plasmonic Composite Fibers with Enhanced Photocatalytic Hydrogen Generation Activity |
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| LI Yue-Jun,CAO Tie-Ping,ZHAO Yan-Hui,SUN Da-Wei and WANG Xia.Preparation of Bi@Bi2Sn2O7/TiO2 Plasmonic Composite Fibers with Enhanced Photocatalytic Hydrogen Generation Activity[J].Chinese Journal of Inorganic Chemistry,2019,35(8):1371-1378. |
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| Authors: | LI Yue-Jun CAO Tie-Ping ZHAO Yan-Hui SUN Da-Wei and WANG Xia |
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| Institution: | College of Chemistry, Baicheng Normal University, Baicheng, Jilin 137000, China,College of Chemistry, Baicheng Normal University, Baicheng, Jilin 137000, China,College of Chemistry, Baicheng Normal University, Baicheng, Jilin 137000, China,College of Chemistry, Baicheng Normal University, Baicheng, Jilin 137000, China;College of Chemistry, Jilin Normal University, Siping, Jilin 136000, China and College of Chemistry, Baicheng Normal University, Baicheng, Jilin 137000, China |
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| Abstract: | By employing electrospun TiO2 nanofiber as substrate, Bi@Bi2Sn2O7/TiO2 plasmonic composite fibers were prepared via one-step hydrothermal method. The composition, morphology and optical properties were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), high-resolution transmission electron microscope (HRTEM), ultraviolet-visible diffuse reflection spectra (UV-Vis DRS) and photoluminescence spectroscopy (PL) analysis. The photocatalytic water splitting for hydrogen evolution was investigated over Bi@Bi2Sn2O7/TiO2 plasmonic composite fibers with triethanolamine as the donor residue. The results showed that the Bi nanoparticles were generated onto Bi2Sn2O7 nanoparticle via the in situ reduction of Bi3+ by glucose, meanwhile grew on the TiO2 nanofibers surface. The enhanced photocatalytic activity of the Bi@Bi2Sn2O7/TiO2 plasmonic composites fibers can be further improved mainly attributed to the formation of high-quality p-n heterojunctions between Bi2Sn2O7 and titanium dioxide, the plasma resonance effect of metal bismuth, and the synergistic effect of plasma resonance effect and p-n heterojunction. The corresponding H2 production rate was 7.26 mmol·h-1·g-1. |
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| Keywords: | composite fibers plasma photocatalysis hydrogen generation |
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