Open AccessEnhancing Hydrogen Adsorption Capacity of Metal Organic Frameworks M(BDC)TED0.5 through Constructing a Bimetallic Structure
Author(s) -
Renjie Li,
Xin Han,
Qiaona Liu,
An Qian,
Fang Zhu,
Jiawen Hu,
Jun Fan,
Haitao Shen,
Jichang Liu,
Xin Pu,
Heng Xu,
Bin Mu
Publication year - 2022
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.2c01914
Subject(s) - bimetallic strip , metal organic framework , adsorption , metal , materials science , hydrogen storage , hydrogen , inorganic chemistry , chemical engineering , chemistry , metallurgy , organic chemistry , engineering
Metal organic frameworks (MOFs) have promising application prospects in the field of hydrogen storage. However, the successful application of MOFs in the field is still limited by their hydrogen storage capacity. Herein, a series of M x M 1- x ( BDC )TED 0.5 (M = Zn, Cu, Co, or Ni) with a bimetallic structure was constructed by introducing two metal ions in the synthesis process. The results of X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, and inductively coupled plasma showed that the bimetallic structure with different content ratios can be stably constructed by a hydrothermal method. Among them, the Cu-based bimetal MOFs Cu 0.625 Ni 0.375 (BDC)TED 0.5 exhibited the best hydrogen storage capacity of 2.04 wt% at 77 K and 1 bar, which was 22% higher than that of monometallic Ni( BDC )TED 0.5 . The enhanced hydrogen storage capacity can be attributed to the improved specific surface area and micropore volume of bimetal MOFs by introducing an appropriate amount of bimetallic atoms.