Study on the capacity of mesoporous alumina with different
pore sizes absorb silane inhibitors
Dmitry G. Shchukin
College of Materials Science and Technology,
Nanjing University of Aeronautics and
Astronautics, Nanjing, Jiangsu 210016, China
Stephenson Institute for Renewable Energy,
The University of Liverpool, Chadwick
Building, Peach Street, L69 7ZF Liverpool, UK
Li Cheng, College of Materials Science and
Technology, Nanjing University of Aeronautics
and Astronautics, Nanjing, Jiangsu 210016,
By modifying and optimizing the procedures, which were well described and understood for the
synthesis of macroporous alumina, mesoporous alumina–based film has been successfully pre-
pared, In this paper, the orderly mesoporous Al
thin film was prepared by electrochemical
workstation, and via supported N‐octyltriethoxysilane (NOS) coupling agent, corrosion inhibitors
be loaded into the different pore sizes of mesoporous alumina films. The physicochemical proper-
ties of this thin inhibitors carrier film were characterized. Corrosion resistance of mesoporous alu-
mina and honeycomb ceramic macroporous alumina were compared; the conclusion shows that
mesoporous alumina film can be used as good corrosion inhibitors carrier and bring out a high‐effi-
ciency inhibition result. Simultaneously, by compared with corrosion inhibition of different pore
sizes (20‐50 nm) mesoporous alumina who absorbed NOS, and a general relationship between
the different mesoporous alumina pore sizes and the adsorption capacity of NOS was obtained.
mesoporous alumina, adsorption capacity, corrosion inhibition performance
International Union of Pure and Applied Chemistry (ICPAU) defines:
Porous materials with pore sizes between 2 and 50 nm are mesopo-
Mesoporous materials, as a new type of material, have
large specific surface area and regular pore structure, obtained high
activity and greatly adsorbed capacity.
Mesoorous alumina is a very
important engineering material extensively used in catalysis, adsorp-
tion, and separation.
There are large number of reports available
for the synthesis of mesoporous alumina using various anionic, non-
ionic, and cationic surfactants in aqueous or in organic solvents using
(Keggin cation = [AlO
ides. Recently, a review on the state of the art of synthesis and poten-
tial of mesoporous alumina for catalytic applications has been
published by Pariente.
Recently, alumina pregnated mesoporous silica
and mesoporous alumina prepared using an anionic surfac-
were reported to exhibit improved adsorption for several anionic
species over commercial activated alumina. We also confirmed the
effectiveness of mesoporous alumina in adsorptive removal of arse-
nate and orthophosphate anions.
It is meaningful to measure the adsorption performances over dif-
ferent mesoporous alumina samples to draw a correct relationship
between adsorption capacity and textural parameters of an alumina,
since a range of mesoporous alumina materials prepared using
different kinds of surfactant species with different textural properties
have been claimed.
An extensive review on mesoporous alumina
synthesis and characterization was published recently.
In the present
study, many research groups are extensively working on self‐healing
anticorrosion coating who based on nanocontainers containing inhibi-
In the past decade, many studies were appeared in the literature
on using porous and tubular materials to encapsulate the inhibitor mol-
ecules. Mesoporous silica, titanium dioxide, and halloysite nanotubes
were used as potential candidates for loading the inhibitor.
base titration experiments were performed on mesoporous alumina
and alumina particles at various ionic strengths and for a given pH
point of zero charge (PZC) deviating from PZC. The surface charge
per unit mass of mesoporous alumina is 45 times higher than the sur-
face charge on alumina particles. This difference cannot be completely
explained by the difference in surface area between the 2 materials.
The titration data show that the nanoscale blockade has a significant
effect, probably because ions are adsorbed onto the mesoporous sur-
face through overlap of the electric double layer
; therefore, this
study uses the mesoporous alumina membrane instead of particles.
In this work, the ordered mesoporous alumina film was prepared
by electrochemical workstation, evaluating their reproducibility and
their individual merits in terms of physicochemical properties of the
alumina phases obtained.
The corrosion inhibitor loading capacity
of the mesoporous alumina was compared with the honeycomb
Received: 11 October 2017 Revised: 23 November 2017 Accepted: 18 December 2017
688 Copyright © 2018 John Wiley & Sons, Ltd. Surf Interface Anal. 2018;50:688–695.wileyonlinelibrary.com/journal/sia