title: Tunable preparation of ruthenium nanoparticles with superior size-dependent catalytic hydrogenation properties.
abstract: Ruthenium (Ru) featured with an unusual catalytic behavior is of great significance in several heterogeneous and electro-catalytic reactions. The preparation of tractable Ru nanocatalysts and the building of highly active catalytic system at ambient temperature remains a grand challenge. Herein, a facile strategy is developed for the controllable preparation of Ru nanoparticles (NPs) with the sizes ranging from 2.6 to 51.5nm. Ru NPs show superior size-dependent catalytic performance with the best kinetic rate constant as high as -1.52min-1, which could far surpass the other traditional noble metals. Ru NPs exert exceedingly efficient low-temperature catalytic activity and good recyclability in the catalytic reduction of nitroaromatic compounds (NACs) and azo dyes. The developed catalytic system provides a distinguishing insight for the artificial preparation of Ru NPs with desired sizes, and allows for the development of rational design rules for exploring catalysts with superior catalytic performances, potentially broadening the applications of metallic NP-enabled catalytic analysis.
authors.affiliation: The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Jiangsu, Wuxi 214122, China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Jiangsu, Wuxi 214122, China.
authors.forename: Yaodong
authors.initials: Y
authors.lastname: Luo
authors.affiliation: The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Jiangsu, Wuxi 214122, China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Yang
authors.affiliation: The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Jiangsu, Wuxi 214122, China.
authors.forename: Yaxin
authors.initials: Y
authors.lastname: Yang
authors.affiliation: The Key Lab of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Jiangsu, Wuxi 214122, China. Electronic address: qsong@jiangnan.edu.cn.
authors.forename: Qijun
authors.initials: Q
authors.lastname: Song
keywords: Azo dyes; Catalytic performances; NACs; Ru NPs; Size-dependent