%0 Online Multimedia
%A Liu, Wenjuan
%A Ge, Hongbin
%A Chen, Xiao
%A Lu, Xiaolong
%A Gu, Zhongwei
%A Li, Jinxing
%A Wang, Joseph
%D 2019
%T Fish-Scale-Like
Intercalated Metal Oxide-Based Micromotors
as Efficient Water Remediation Agents
%U https://acs.figshare.com/articles/media/Fish-Scale-Like_Intercalated_Metal_Oxide-Based_Micromotors_as_Efficient_Water_Remediation_Agents/8010845
%R 10.1021/acsami.9b01095.s003
%2 https://acs.figshare.com/ndownloader/files/14924354
%K surface area
%K Fish-Scale-Like Intercalated Metal Oxide-Based Micromotors
%K azo-dye waste solution
%K MnO 2 surface structure
%K Fe-related Fenton reaction
%K FSI micromotor treatment
%K 5 nm nanoparticles
%K ramsdellite MnO 2
%K Fe 2 O 3
%K water remediation applications
%K Mn 2 O 3
%K Efficient Water Remediation Agents
%K nanomaterial
%X With
compelling virtues of a large specific surface area, abundant
active sites, and fast interfacial transport, nanomaterials have been
demonstrated to be indispensable tools for water remediation applications.
Accordingly, micro/nanomotors made by nanomaterials would also benefit
from these properties. Though tuning the surface architecture on demand
becomes a hot topic in the field of nanomaterials, there are still
limited reports on the design of active surface architectures in chemically
driven tubular micro/nanomachines. Here, a unique architecture composed
of a fish-scale-like intercalated (FSI) surface structure and an active
layer with 5 nm nanoparticles is constructed, which composes of Fe2O3 and ramsdellite MnO2, Mn2O3, in the tubular micromotor using a versatile electrodeposition
protocol. Tailoring the electrodeposition parameters enables us to
modulate the active MnO2 surface structure on demand, giving
rise to a pronounced propulsion performance and catalytic activity.
Upon exposure to the azo-dye waste solution, the degradation efficacy
greatly raises by around 22.5% with FSI micromotor treatment when
compared to the normal compact motors, owing to the synergistic effect
between the Fe-related Fenton reaction and a large catalytic area
offered by the hierarchically rough inner surface. Such unique micromachines
with a large active surface area have great potential for environmental
and biomedical applications.
%I ACS Publications