Bottom-up precise synthesis of stable platinum dimers on graphene.
Bottom-up precise synthesis of stable platinum dimers on graphene.
复制标题
石墨烯上自下而上精确合成稳定的铂二聚体
DOI:
10.1038/s41467-017-01259-z
复制
发表时间:
2017-10-20
影响因子:
16.6
通讯作者:
Lu J
中科院分区:
文献类型:
--
作者:
Yan H;Lin Y;Wu H;Zhang W;Sun Z;Cheng H;Liu W;Wang C;Li J;Huang X;Yao T;Yang J;Wei S;Lu J
Supported metal clusters containing only a few atoms are of great interest. Progress has been made in synthesis of metal single-atom catalysts. However, precise synthesis of metal dimers on high-surface area support remains a grand challenge. Here, we show that Pt2dimers can be fabricated with a bottom–up approach on graphene using atomic layer deposition, through proper nucleation sites creation, Pt1single-atom deposition and attaching a secondary Pt atom selectively on the preliminary one. Scanning transmission electron microscopy, x-ray absorption spectroscopy, and theoretical calculations suggest that the Pt2dimers are likely in the oxidized form of Pt2Ox. In hydrolytic dehydrogenation of ammonia borane, Pt2dimers exhibit a high specific rate of 2800 molH2molPt−1min−1at room temperature, ~17- and 45-fold higher than graphene supported Pt single atoms and nanoparticles, respectively. These findings open an avenue to bottom–up fabrication of supported atomically precise ultrafine metal clusters for practical applications.
登录
查看更多内容
影响因子:
15
作者:
HUMMERS, WS;OFFEMAN, RE
通讯作者:
OFFEMAN, RE
影响因子:
15
作者:
Abbet, S;Sanchez, A;Rösch, N
通讯作者:
Rösch, N
影响因子:
56.9
作者:
Ding, Kunlun;Gulec, Ahmet;Stair, Peter C.
通讯作者:
Stair, Peter C.
影响因子:
15
作者:
Chen, Wenyao;Ji, Jian;Yuan, Weikang
通讯作者:
Yuan, Weikang
影响因子:
56.9
作者:
Kaden, William E.;Wu, Tianpin;Anderson, Scott L.
通讯作者:
Anderson, Scott L.