化工进展 ›› 2021, Vol. 40 ›› Issue (5): 2695-2702.DOI: 10.16085/j.issn.1000-6613.2020-1081

• 材料科学与技术 • 上一篇    下一篇

MoS2/Y分子筛微生物电解池阴极材料制备及其电化学性能

赵煜(), 李佳, 杨冬花, 王改, 张杰, 王玉雪   

  1. 太原理工大学化学化工学院,山西 太原 030024
  • 收稿日期:2020-06-15 出版日期:2021-05-06 发布日期:2021-05-24
  • 通讯作者: 赵煜
  • 作者简介:赵煜(1969—),女,讲师,研究方向为微生物电解池阴极材料。E-mail:zhaoyu@tyut.edu.cn
  • 基金资助:
    国家自然科学基金(U1261103);山西省自然科学基金(2014011014-6)

Preparation of MoS2/Y zeolite microbial electrolysis cell cathode material and its electrochemical properties

ZHAO Yu(), LI Jia, YANG Donghua, WANG Gai, ZHANG Jie, WANG Yuxue   

  1. School of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
  • Received:2020-06-15 Online:2021-05-06 Published:2021-05-24
  • Contact: ZHAO Yu

摘要:

采用水热法合成了一系列不同比例的MoS2/Y分子筛复合物,并将其制成碳基复合电解池阴极。线性扫描伏安法(LSV)测试表明,当MoS2和Y分子筛质量比为5∶2、碳纸负载量为1.5mg/cm2时,阴极催化析氢性能最佳。通过SEM、TEM、XRD、XPS和BET对复合材料进行表征,SEM测试表明MoS2/Y分子筛为片状和八面体相互交织叠加的云状形貌。BET测试表明其具有排列规整的微孔-介孔多级孔道结构,利于加速H+还原和H2扩散。本文还考察了以MoS2/Y分子筛作为微生物电解池(MEC)阴极的析氢性能。在MEC运行5个周期的产氢实验中,MoS2/Y分子筛所产生的平均最大电流密度、氢气产率和产氢量等都高于Pt电极,且具有长期稳定性。因此,MoS2/Y分子筛是一种适于实际应用的析氢催化剂。

关键词: MoS2/Y分子筛, 析氢性能, 微生物电解池

Abstract:

A series of MoS2/Y zeolite composites with different ratios were synthesized by hydrothermal method and made into the carbon-based composite electrolytic cell cathode. The LSV test showed that when the mass ratio of MoS2 and Y zeolite was 5∶2 and the carbon paper loading was 1.5mg/cm2, the cathodic hydrogen evolution performance was the best. The composites were characterized by SEM, TEM, XRD, XPS and BET. SEM testing indicated that the MoS2/Y zeolite was a cloud-like morphology in which sheets and octahedrons were interwoven and superimposed. BET testing showed that it had a well-arranged micropore-mesoporous multi-level channel structure, which was beneficial to accelerate H+ reduction and H2 diffusion. The hydrogen evolution performance of MoS2/Y zeolite as the cathode of microbial electrolysis cell (MEC) was investigated. In the five-cycle hydrogen production experiment of MEC, the average maximum current density, hydrogen production rate and hydrogen production of MoS2/Y zeolite were higher than that of Pt electrode, and had long-term stability. Therefore, MoS2/Y zeolite was a suitable hydrogen evolution catalyst.

Key words: MoS2/Y zeolite, hydrogen evolution performance, microbial electrolysis cell

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