能源化学(英文) ›› 2015, Vol. 21 ›› Issue (2): 127-137.DOI: 10.1016/S2095-4956(15)60293-5

• ARTICLES •    下一篇

Synthesis of layered double hydroxides/graphene oxide nanocomposite as a novel high-temperature CO2 adsorbent

Junya Wanga, Xueyi Meia, Liang Huanga, Qianwen Zhenga, Yaqian Qiaoa, Ketao Zangb, Shengcheng Maob, Ruoyan Yanga, Zhang Zhanga, Yanshan Gaoa, Zhanhu Guoc, Zhanggen Huangd, Qiang Wanga,d   

  1. a. College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;
    b. Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China;
    c. Integrated Composites Laboratory, Dan F Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;
    d. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China
  • 收稿日期:2014-10-17 修回日期:2014-11-23 出版日期:2015-03-23 发布日期:2015-03-23
  • 通讯作者: Qiang Wang
  • 基金资助:

    This work was supported by the Fundamental Research Funds for the Central Universities (BLYJ201509), the Fundamental Research Funds for the Central Universities (TD-JC-2013-3), the Program for New Century Excellent Talents in University (NCET-12-0787), Beijing Nova Programme (Z131109000413013), the National Natural Science Foundation of China (51308045), and the Foundation of State Key Laboratory of Coal Conversion (Grant No. J14-15-309), Institute of Coal Chemistry, Chinese Academy of Sciences.

Synthesis of layered double hydroxides/graphene oxide nanocomposite as a novel high-temperature CO2 adsorbent

Junya Wanga, Xueyi Meia, Liang Huanga, Qianwen Zhenga, Yaqian Qiaoa, Ketao Zangb, Shengcheng Maob, Ruoyan Yanga, Zhang Zhanga, Yanshan Gaoa, Zhanhu Guoc, Zhanggen Huangd, Qiang Wanga,d   

  1. a. College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China;
    b. Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China;
    c. Integrated Composites Laboratory, Dan F Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710, USA;
    d. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China
  • Received:2014-10-17 Revised:2014-11-23 Online:2015-03-23 Published:2015-03-23
  • Contact: Qiang Wang
  • Supported by:

    This work was supported by the Fundamental Research Funds for the Central Universities (BLYJ201509), the Fundamental Research Funds for the Central Universities (TD-JC-2013-3), the Program for New Century Excellent Talents in University (NCET-12-0787), Beijing Nova Programme (Z131109000413013), the National Natural Science Foundation of China (51308045), and the Foundation of State Key Laboratory of Coal Conversion (Grant No. J14-15-309), Institute of Coal Chemistry, Chinese Academy of Sciences.

摘要: In this contribution, a novel high-temperature CO2 adsorbent consisting of Mg-Al layered double hydroxide (LDH) and graphene oxide (GO) nanosheets was prepared and evaluated. The nanocomposite-type adsorbent was synthesized based on the electrostatically driven self-assembly between positively charged Mg-Al LDH single sheet and negatively charged GO monolayer. The characteristics of this novel adsorbent were investigated using XRD, FE-SEM, HRTEM, FT-IR, BET and TGA. The results showed that both the CO2 adsorption capacity and the multi-cycle stability of LDH were increased with the addition of GO owing to the enhanced particle dispersion and stabilization. In particular, the absolute CO2 capture capacity of LDH was increased by more than twice by adding 6.54 wt% GO as support. GO appeared to be especially effective for supporting LDH sheets. Moreover, the CO2 capture capacity of the adsorbent could be further increased by doping with 15 wt% K2CO3. This work demonstrated a new approach for the preparation of LDH-based hybrid-type adsorbents for CO2 capture.

关键词: CO2 capture, global warming, graphene oxide, hybrid materials, recycling

Abstract: In this contribution, a novel high-temperature CO2 adsorbent consisting of Mg-Al layered double hydroxide (LDH) and graphene oxide (GO) nanosheets was prepared and evaluated. The nanocomposite-type adsorbent was synthesized based on the electrostatically driven self-assembly between positively charged Mg-Al LDH single sheet and negatively charged GO monolayer. The characteristics of this novel adsorbent were investigated using XRD, FE-SEM, HRTEM, FT-IR, BET and TGA. The results showed that both the CO2 adsorption capacity and the multi-cycle stability of LDH were increased with the addition of GO owing to the enhanced particle dispersion and stabilization. In particular, the absolute CO2 capture capacity of LDH was increased by more than twice by adding 6.54 wt% GO as support. GO appeared to be especially effective for supporting LDH sheets. Moreover, the CO2 capture capacity of the adsorbent could be further increased by doping with 15 wt% K2CO3. This work demonstrated a new approach for the preparation of LDH-based hybrid-type adsorbents for CO2 capture.

Key words: CO2 capture, global warming, graphene oxide, hybrid materials, recycling