• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >One-pot engineering TiO2/graphene interface for enhanced adsorption and photocatalytic degradation of multiple organics
【24h】

One-pot engineering TiO2/graphene interface for enhanced adsorption and photocatalytic degradation of multiple organics

机译：一锅工程TiO2 /石墨烯界面，用于增强多种有机物的吸附和光催化降解

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

It is challenging to design a multifunctional structure or composite for the simultaneous adsorption and photocatalytic degradation of organic pollutants in water. Towards this goal, in this work we innovatively engineered interfacial sites between TiO2 particles and reduced graphene oxide (RGO) sheets by employing an in situ one-pot one-step solvothermal method. The interface was associated with the content of RGO, solvothermal time and solvent ratio of n-pentanol to n-hexane. It was found that with a moderate amount of RGO (25%), TiO2 nanoparticles were well dispersed on the surface of the RGO or wrapped by the RGO, thus leading to full contact and strong interactions to form a Ti-O-C interfacial structure. But with low content of RGO (6%), TiO2 aggregates were a mixture of nanosheets, nanoparticles and nanorods. 25%RGO/TiO2 also had 175% higher surface area (146 m(2) g(-1)), 95% larger volume (0.339 cm(3) g(-1)) and smaller band gap than 6%RGO/TiO2. More importantly, 25%RGO/TiO2 demonstrated higher adsorption efficiency (25%) and four times faster degradation rate than TiO2 (0%). It also exhibited good capability to eliminate multiple organics and stable long-term cycle performance (up to 93% retention after 30 cycles). Its superiority was attributed to the large surface area and unique interface between the TiO2 and RGO, which not only provided more active sites to capture pollutants, but enhanced charge transfer (3 mu A cm(-2), five times higher than TiO2). This work offers a promising way to purify water through engineering new material structure and integrating adsorption and photodegradation technologies.
机译：它是具有挑战性的设计用于同时吸附和水中有机污染物的光催化降解的多官能结构或复合材料。为了实现这一目标，在该工作中，我们创新原位一锅一步法溶剂热法采用的工程化的TiO 2颗粒和还原的石墨烯氧化物（RGO）片材之间的界面部位。接口用RGO，溶剂热时间和正戊醇的正己烷溶剂比的内容相关联。结果发现，与RGO（25％）适量，二氧化钛纳米粒子良好地分散的RGO的表面上或包裹由RGO，从而导致充分接触和强烈的相互作用，以形成的Ti-O-C界面结构。但是，随着RGO（6％）的低含量，二氧化钛聚集体纳米片，纳米颗粒和纳米棒的混合物中。 25％RGO / TiO2的也有较高的175％的表面积（146米（2）克（-1）），较大的95％体积（0.339厘米（3）克（-1））和小的带隙大于6％RGO /二氧化钛。更重要的是，25％RGO / TiO2的表现出较高的吸附效率（25％）和快四倍降解速率比的TiO 2（0％）。它也显示出良好的性能，以消除多个有机物和稳定的长期循环性能（30次循环后高达93％保留）。它的优越性是由于大的表面积的和独特的界面处的TiO 2和RGO之间，它不仅提供了更多的活性位点，以捕获污染物，但增强的电荷转移（3亩甲厘米（-2），比二氧化钛高五倍）。这项工作提供一个有前途的方式，通过设计新材料结构和整合的吸附和光降解技术来净化水质。

著录项

  • 来源
    《Nanotechnology》 |2018年第38期|共12页
  • 作者

    Song Jianhua; Ling Yun; Xie Yu; Liu Lianjun; Zhu Huihua;

  • 作者单位

    Nanchang Hangkong Univ Coll Environm &

    Chem Engn Nanchang 330063 Jiangxi Peoples R China;

    Nanchang Hangkong Univ Coll Environm &

    Chem Engn Nanchang 330063 Jiangxi Peoples R China;

    Nanchang Hangkong Univ Coll Environm &

    Chem Engn Nanchang 330063 Jiangxi Peoples R China;

    Nanchang Hangkong Univ Coll Environm &

    Chem Engn Nanchang 330063 Jiangxi Peoples R China;

    Nanchang Hangkong Univ Coll Environm &

    Chem Engn Nanchang 330063 Jiangxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    TiO2; interface; adsorption; graphene; photodegradation;

    机译：TiO2;界面;吸附;石墨烯;光降解;

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