化工进展 ›› 2022, Vol. 41 ›› Issue (5): 2231-2242.DOI: 10.16085/j.issn.1000-6613.2021-1277

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3D打印制备三维石墨烯及其在水处理中的应用

张惠宁1,2(), 石中玉1, 肖彦奎1, 张晓琴3, 尹鑫1, 田丽红1   

  1. 1.兰州理工大学土木工程学院,甘肃 兰州 730050
    2.甘肃省科学院纳米应用技术研究室,甘肃 兰州 730050
    3.中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃 兰州 730000
  • 收稿日期:2021-06-18 修回日期:2021-08-24 出版日期:2022-05-05 发布日期:2022-05-24
  • 通讯作者: 张惠宁
  • 作者简介:张惠宁(1987—),男,博士,副教授,硕士研究生导师,研究方向为水污染控制理论、污水处理的新型(纳米)材料、污染物的光催化降解。E-mail:hn_zhang@whu.edu.cn
  • 基金资助:
    国家自然科学基金(52060015);中国博士后科学基金面上项目(2019M653796);甘肃省自然科学基金(20JR10RA197)

Preparation of 3D graphene by 3D printing and its application in water treatment

ZHANG Huining1,2(), SHI Zhongyu1, XIAO Yankui1, ZHANG Xiaoqin3, YIN Xin1, TIAN Lihong1   

  1. 1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
    2.Nano Application Technology Research Office, Gansu Academy of Sciences, Lanzhou 730050, Gansu, China
    3.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China
  • Received:2021-06-18 Revised:2021-08-24 Online:2022-05-05 Published:2022-05-24
  • Contact: ZHANG Huining

摘要:

石墨烯作为一类新型纳米材料,具有对水中各类污染物良好的吸附去除性能,但石墨烯纳米粉末态的性状使其在使用后难以从溶液中分离出来而造成二次污染。因此构建大体积的三维石墨烯结构,可以有效弥补水处理中纳米材料难以分离的问题。本文介绍了如今常用的三维结构制备方法,如模板法、自组装法等,但这些方法通常步骤烦琐、影响因素及所需条件较多等,在过程中易产生结构缺陷,从而影响制得的三维结构的力学性能。文中指出,3D打印法通过计算机数据调控,具有操作简便、结构设计精准、批量制备的优点,可制备出优良的三维结构体,并可通过对浆料组分的灵活调控进行改性或增加其力学性能。综上所述,配置满足3D打印黏度要求的浆料,并使制得的三维结构具备一定要求的力学性能,充分利用其精密的规模化生产,是使3D打印三维石墨烯适用于水处理的关键所在。

关键词: 石墨烯, 3D打印, 制备, 污水处理

Abstract:

Graphene, as a new type of nano materials, has good adsorption and removal performance for various pollutants in water. However, the final state of graphene nanopowder makes it difficult to separate from the solution after use, resulting in secondary pollution. Therefore, the construction of large volume three-dimensional graphene structure can effectively remedy the problem of difficult separation of nano materials in water treatment. This paper introduced the three-dimensional structure preparation methods commonly used nowadays, such as template method, self-assembly method and so on, but these methods were usually cumbersome steps, many influencing factors and required conditions and other shortcomings, which were easy to produce structural defects in the process, and thus affecting the mechanical properties of the three-dimensional structure. The 3D printing method had the advantages of simple operation, accurate structure design and batch preparation through computer data control. It can prepare excellent three-dimensional structure and modify or increase its mechanical properties through flexible control of slurry components. To sum up, the key to make 3D printing graphene suitable for water treatment was to configure the slurry that met the viscosity requirements of 3D printing and to make the 3D structure havng certain required mechanical.

Key words: graphene, 3D printing, preparation, sewage treatment

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