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Influence of oxygen‐functional groups on carbon replicas for hydrogen adsorption
Author(s) -
Lee SeulYi,
Park SooJin
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201127518
Subject(s) - adsorption , carbon fibers , hydrogen , oxygen , nanoporous , hydrogen storage , materials science , chemical engineering , molecule , acceptor , chemistry , inorganic chemistry , nanotechnology , organic chemistry , composite material , composite number , physics , condensed matter physics , engineering
In this work, we prepared the ordered nanoporous carbon replicas (CR) by templating method using organized nanoporous silica SBA‐15 as a template. The prepared CR samples were chemically modified with H 3 PO 4 concentrates in order to investigate the hydrogen storage behaviors. From the results, the H 3 PO 4 treatments were proven to introduce oxygen‐functional groups to carbon surfaces and change the textural properties of the samples. Moreover, the amount of hydrogen adsorption for H 3 PO 4 treated samples was all enhanced except for the excessively treated sample (above 10 M H 3 PO 4 ). Consequently, it could be concluded that hydrogen storage is greatly governed by the acidity of the carbon surfaces, resulting in enhancing electron acceptor–donor interactions at the interfaces (carbon surfaces‐hydrogen molecules) due to the H 3 PO 4 treatments.