title: Synthesis of Co-based bimetallic nanocrystals with one-dimensional structure for selective control on syngas conversion.
abstract: Co-based bimetallic nanocrystals with one-dimensional (1D) branches were synthesized by the heterogeneous nucleation of Co atoms onto prenucleated seeds, such as Pd or Cu, through a facile wet-chemical route. The peripheral branches (rod-like) of the Co-Pd and Co-Cu nanocrystals were outspread along the (001) direction and were enclosed by (101) facets. By switching the prenucleated metals to form robust Co-Pd or Co-Cu bimetallic nanocatalysts, the selectivity of CO hydrogenation could be adjusted purposely towards heavy paraffins, light olefins or oxygenates. The Anderson-Schulz-Flory chain-lengthening probabilities for products were up to 0.9 over Co-Pd nanocrystals, showing that long-chain hydrocarbons can be formed with high selectivity using the targeted design of Co-Pd nanocrystal catalysts. These Co-based bimetallic nanocrystals with a 1D structure exhibited superior catalytic activities over the corresponding Co-based nanoparticles for synthesis gas conversion.
authors.affiliation: CAS key laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China. zhuy@sari.ac.cn sunyh@sari.ac.cn.
authors.forename: Rongbin
authors.initials: R
authors.lastname: Ba
authors.forename: Yonghui
authors.initials: Y
authors.lastname: Zhao
authors.forename: Lujing
authors.initials: L
authors.lastname: Yu
authors.forename: Jianjun
authors.initials: J
authors.lastname: Song
authors.forename: Shuangshuang
authors.initials: S
authors.lastname: Huang
authors.forename: Liangshu
authors.initials: L
authors.lastname: Zhong
authors.forename: Yuhan
authors.initials: Y
authors.lastname: Sun
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhu