Synthesis
of Methyl-Capped TiO2–SiO2 Janus Pickering
Emulsifiers for Selective Photodegradation
of Water-Soluble Dyes
Posted on 2020-06-16 - 18:35
Recently, Pickering
emulsion stabilized by Janus particles has
received considerable attention for interfacial reactions and droplet
manipulation. However, its potential interests have been rarely explored
because of the difficulties in designing and fabricating Janus particles
for Pickering emulsion with suitable applications. Also, photocatalytic
materials are scarcely applied as emulsifiers in Pickering emulsions
because of their photogenerated hydrophilicity. This work reports
the synthesis of methyl-capped Janus TiO2–SiO2 particles (MJTSs), which can be used as a novel emulsifier
and photocatalyst simultaneously. The MJTSs, composed of an anatase
TiO2 sphere and silica rod, are prepared by inverse emulsion-based
step-by-step growth. We demonstrate that the Pickering emulsion stabilized
by MJTSs represents extraordinary ability of emulsification, excellent
stability, and tunable emulsion type (water in oil or oil in water).
In addition, the MJTSs exhibit photocatalytic activity in decomposition
of pollutants in the water phase while maintaining the stability of
the Pickering emulsion.
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Zhou, Yingyu; Shen, Fei; Zhang, Shengdi; Zhao, Qingqing; Xu, Zhuang; Chen, Hongling (2020). Synthesis
of Methyl-Capped TiO2–SiO2 Janus Pickering
Emulsifiers for Selective Photodegradation
of Water-Soluble Dyes. ACS Publications. Collection. https://doi.org/10.1021/acsami.0c01064
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AUTHORS (6)
YZ
Yingyu Zhou
FS
Fei Shen
SZ
Shengdi Zhang
QZ
Qingqing Zhao
ZX
Zhuang Xu
HC
Hongling Chen