TY - JOUR
T1 - Architectural Cu2O@CuO mesocrystals as superior catalyst for trichlorosilane synthesis
AU - Yang, Zhibin
AU - Kang, Ting
AU - Ji, Yongjun
AU - Li, Jing
AU - Zhu, Yongxia
AU - Liu, Hezhi
AU - Jiang, Xingyu
AU - Zhong, Ziyi
AU - Su, Fabing
N1 - Publisher Copyright:
© 2020 Elsevier Inc.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5
Y1 - 2021/5
N2 - As compared with conventional nanocrystal systems, Cu-based mesocrystals have demonstrated distinct advantages in catalytic applications. Here, we report the preparation of a novel architectural Cu2O@CuO catalyst system integrated with the core/shell and mesocrystal structures (Cu2O@CuO MC) via a facile solvothermal process followed by calcination. The formation mechanism of the Cu2O@CuO MC with hexapod morphology was deciphered based on a series of time-dependent experiments and characterizations. When applied as a Cu-based catalyst to produce trichlorosilane (TCS) via Si hydrochlorination reaction, the Cu2O@CuO MC exhibited a much higher Si conversion, TCS selectivity, and stability than the catalyst-free industrial process and the Cu2O@CuO catalyst with a core-shell nanostructure. The enhanced catalytic efficiency of the former is attributed to the collective effects from its quite rough surface for providing abundant adsorption sites, the ordered nanoparticle arrangement in the core and shell for generating strong synergistic effects, and the micrometer size for the improved structural stability. This work demonstrates a practical route for designing sophisticated architectural structures that combine several structural functions within one catalyst system and their catalysis applications.
AB - As compared with conventional nanocrystal systems, Cu-based mesocrystals have demonstrated distinct advantages in catalytic applications. Here, we report the preparation of a novel architectural Cu2O@CuO catalyst system integrated with the core/shell and mesocrystal structures (Cu2O@CuO MC) via a facile solvothermal process followed by calcination. The formation mechanism of the Cu2O@CuO MC with hexapod morphology was deciphered based on a series of time-dependent experiments and characterizations. When applied as a Cu-based catalyst to produce trichlorosilane (TCS) via Si hydrochlorination reaction, the Cu2O@CuO MC exhibited a much higher Si conversion, TCS selectivity, and stability than the catalyst-free industrial process and the Cu2O@CuO catalyst with a core-shell nanostructure. The enhanced catalytic efficiency of the former is attributed to the collective effects from its quite rough surface for providing abundant adsorption sites, the ordered nanoparticle arrangement in the core and shell for generating strong synergistic effects, and the micrometer size for the improved structural stability. This work demonstrates a practical route for designing sophisticated architectural structures that combine several structural functions within one catalyst system and their catalysis applications.
KW - Catalytic performance
KW - Core/shell structure
KW - CuO@CuO mesocrystal
KW - Formation mechanism
KW - Trichlorosilane synthesis
UR - http://www.scopus.com/inward/record.url?scp=85099368525&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2020.12.069
DO - 10.1016/j.jcis.2020.12.069
M3 - 文章
C2 - 33472146
AN - SCOPUS:85099368525
SN - 0021-9797
VL - 589
SP - 198
EP - 207
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -