• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Fabrication of TiO2 nanorod assembly grafted rGO (rGO@TiO2-NR) hybridized flake-like photocatalyst
【24h】

Fabrication of TiO2 nanorod assembly grafted rGO (rGO@TiO2-NR) hybridized flake-like photocatalyst

机译：TiO2纳米棒组装接枝rGO（rGO @ TiO2-NR）混杂片状光催化剂的制备

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

To efficiently separate the photo-generated electron-hole pairs of TiO2 hybrid, anatase TiO2 nanorod assembly grafted reduced graphene oxides (rGO@TiO2-NR) hybrid was successfully fabricated using potassium titanium oxalate (PTO) and graphene oxides (GO) as starting materials and diethylene glycol (DEG) as reductant. The effect of GO content on the structure and photocatalytic activity of rGO@TiO2-NR composite was systematically studied. Results show that, in the absence of GO, only TiO2 microsphere assembly is obtained from TiO2 nanorods. The presence of GO results in the formation of a flake-like TiO(2-)nanorod-assembled grafted rGO hybrid. The photocatalytic activity of rGO@TiO2-NR composite increases first and then decreases with increase in the amount of GO from 0 wt.% to 10 wt.%. The hybridized S4 sample prepared with 4 wt.% GO possesses the highest photocatalytic activity with a constant rate of 0.039 min(-1) in the photocataytic degradation of Brilliant X-3B dye (X3B); this sample was enhanced more than three times when compared with pure TiO2 sample (0.012min(-1)). The enhanced photocatalytic activity of the rGO@TiO2-NR hybrid was attributed to the strong interaction between TiO2 nanorods and rGO. The unique hierarchical structure of 1D nanorod assembly TiO2-rGO flakes facilitates the injection and transfer of photo-generated electrons from TiO2 to graphene, thus retarding the recombination of electron-hole pairs and enhancing the photocatalytic activity. The enlarged BET surface areas, not only increasing the number of active sites, but also facilitating the adsorption of the dye, and improved light-harvesting ability also contribute to the enhanced photoreactivity of rGO@TiO2-NR hybrid. (C) 2016 Elsevier B.V. All rights reserved.
机译：为了有效分离TiO2杂化材料的光生电子-空穴对，以草酸钾钛酸酯（PTO）和氧化石墨烯（GO）为原料成功制备了锐钛矿型TiO2纳米棒组装接枝的还原氧化石墨烯（rGO @ TiO2-NR）杂化材料。和二甘醇（DEG）作为还原剂。系统研究了GO含量对rGO @ TiO2-NR复合材料结构和光催化活性的影响。结果表明，在没有GO的情况下，仅从TiO2纳米棒获得TiO2微球组件。 GO的存在导致形成片状TiO（2-）纳米棒组装的接枝rGO杂种。 rGO @ TiO2-NR复合材料的光催化活性随着GO含量从0 wt。％到10 wt。％的增加先增加，然后降低。用4 wt。％GO制备的杂交S4样品在Brilliant X-3B染料（X3B）的光催化降解中具有最高的光催化活性，恒定速率为0.039 min（-1）。与纯TiO2样品相比（0.012min（-1）），该样品的增强作用超过三倍。 rGO @ TiO2-NR杂化物的增强的光催化活性归因于TiO2纳米棒与rGO之间的强相互作用。一维纳米棒组件TiO2-rGO薄片的独特分层结构有助于将光生电子从TiO2注入和转移到石墨烯，从而阻碍电子-空穴对的重组并增强光催化活性。增大的BET表面积，不仅增加了活性位点的数量，而且还促进了染料的吸附，改善的光收集能力也有助于rGO @ TiO2-NR杂化物的光反应性增强。 （C）2016 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Applied Surface Science》 |2017年第ptab期|218-227|共10页
  • 作者

    Lv Kangle; Fang Shun; Si Lingling; Xia Yang; Ho Wingkei; Li Mei;

  • 作者单位

    Hong Kong Inst Educ, Dept Sci & Environm Studies, Tai Po, Hong Kong, Peoples R China|South Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China|South Cent Univ Nationalities, Minist Educ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China;

    South Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China|South Cent Univ Nationalities, Minist Educ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China;

    South Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China|South Cent Univ Nationalities, Minist Educ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China;

    South Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China|South Cent Univ Nationalities, Minist Educ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China;

    Hong Kong Inst Educ, Dept Sci & Environm Studies, Tai Po, Hong Kong, Peoples R China;

    South Cent Univ Nationalities, State Ethn Affairs Commiss, Key Lab Catalysis & Mat Sci, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China|South Cent Univ Nationalities, Minist Educ, Coll Resources & Environm Sci, Wuhan 430074, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    TiO2; Graphene oxide; Photocatalytic degradation; Hybrid;

    机译：TiO2;氧化石墨烯;光催化降解;杂化;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号