Construction of hollow mesoporous silica nanoreactors for enhanced photo-oxidations over Au-Pt catalysts | Zendy

Hao Tian | Zendy; Jinhui Zhao | Zendy; Xinyao Wang | Zendy; Lizhuo Wang | Zendy; Hao Liu | Zendy; Guoxiu Wang | Zendy; Jun Huang | Zendy; Jian Liu | Zendy; Gao Qing Lu | Zendy

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Construction of hollow mesoporous silica nanoreactors for enhanced photo-oxidations over Au-Pt catalysts

Author(s) -

Hao Tian,

Jinhui Zhao,

Xinyao Wang,

Lizhuo Wang,

Hao Liu,

Guoxiu Wang,

Jun Huang,

Jian Liu,

Gao Qing Lu

Publication year - 2020

Publication title -

national science review

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.433

H-Index - 54

eISSN - 2095-5138

pISSN - 2053-714X

DOI - 10.1093/nsr/nwaa080

Subject(s) - nanoreactor , bimetallic strip , catalysis , materials science , chemical engineering , mesoporous material , mesoporous silica , adsorption , hydrothermal circulation , nanotechnology , nanoparticle , chemistry , organic chemistry , engineering

It is highly desirable to design hollow structures with multi-scale functions by mimicking cells for the construction of micro/nanoreactors. Herein, we report the construction of hollow-structured submicrometer-photoreactors with bimetallic catalysts loaded within mesoporous silicas. The synthesis parameters are optimized to study the evolution of hollow structure through hydrothermal treatment and an 'adhesive-contraction' formation mechanism is proposed. AuPt@HMZS catalysts exhibited a broader absorbance region under visible light and the adsorption edge displayed a red-shift, indicating the strong metal-metal interactions at the alloy interface. The reaction performance of the coupled Au-Pt catalysts can be tuned to achieve excellent catalytic activity in cinnamyl alcohol oxidation to cinnamic acid for 3.1 mmol g -1 with 99% selectivity. The proposed strategy to build hollow structures as multifunctional micro/nanoreactors is promising for the design of high-performance and sustainable catalysts for chemical synthesis.

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