RT Journal Article A1 Yanyan Liu,Guosheng Han,Xiaoyu Zhang,Congcong Xing,Chenxia Du,Huaqiang Cao,Baojun Li; AD 化学与分子工程学院, 中国 ; 化学与分子工程学院, 中国 ; 化学与分子工程学院, 中国 ; 化学与分子工程学院, 中国 ; 化学与分子工程学院, 中国 ; 化学系, 中国 ; 化学与分子工程学院, 中国 T1 Co-Co3O4@carbon core–shells derived from metal-organic framework nanocrystals as efficient hydrogen evolution catalysts YR 2017 IS 9 vo 10 OP 3035-OP 3048 K1 pyrolysis;core–shell;synergistic effect;Co-metal-organic frameworks (MOFs);NaBH4 hydrolysis AB Controllable pyrolysis of metal-organic frameworks (MOFs) in confined spaces is a promising strategy for the design and development of advanced functional materials. In this study, Co-Co3O4@carbon composites were synthesized via pyrolysis of a Co-MOFs@glucose polymer (Co-MOFs@GP) followed by partial oxidation of Co nanoparticles (NPs). The pyrolysis of Co-MOFs@GP generated a core–shell structure composed of carbon shells and Co NPs. The controlled partial oxidation of Co NPs formed Co-Co3O4 heterojunctions confined in carbon shells. Compared with Co-MOFs@GP and Co@carbon-n (Co@C-n), Co-Co3O4@carbon-n (Co-Co3O4@C-n) exhibited higher catalytic activity during NaBH4 hydrolysis. Co-Co3O4@C-II provided a maximum specific H2 generation rate of 5, 360 mL·min-1·gCo-1 at room temperature due to synergistic interactions between Co and Co3O4 NPs. The Co NPs also endowed Co-Co3O4@C-n with the ferromagnetism needed to complete the magnetic momentum transfer process. This assembly-pyrolysis-oxidation strategy may be an efficient method of preparing novel nanocomposites. SN 1998-0124 LA EN