Au@Pd core–shell nanoclusters growing on nitrogen-doped mildly reduced graphene oxide with enhanced catalytic performance for hydrogen generation from formic acid
Au@Pd core–shell nanoclusters growing on nitrogen-doped mildly reduced graphene oxide with enhanced catalytic performance for hydrogen generation from formic acid
复制标题
DOI：
10.1039/c3ta12531a
复制
发表时间：
2013-10
影响因子：
--
通讯作者：
Zhi-li Wang;Jun-min Yan;Hong-li Wang;Yun Ping;Q. Jiang
中科院分区：
文献类型：
--
作者：
Zhi-li Wang;Jun-min Yan;Hong-li Wang;Yun Ping;Q. Jiang
在这里，我们报告了一种绿色和简单的策略，用于在氮掺杂的轻度还原氧化石墨烯（Au@Pd/ N-mrGO）上直接成核和生长超细（1.8 nm）和分散良好的Au@Pd核壳纳米团簇，无需任何表面活性剂和额外的还原剂。在合成过程中，N-mrGO同时作为还原剂和载体，具有适度的还原能力和较高的分散能力。出乎意料的是，在室温下，制备的Au@Pd/ N-mrGO杂化物比其合金或单金属对应物在不使用任何添加剂的情况下从甲酸水溶液中生成氢的活性要大得多。
Here we report a green and facile strategy for the direct nucleation and growth of ultrafine (1.8 nm) and well dispersed Au@Pd core–shell nanoclusters on nitrogen-doped mildly reduced graphene oxide (Au@Pd/N–mrGO) without any surfactant and additional reducing agent. During the synthesis, N–mrGO acts as both the reducing agent and support by taking advantage of its moderate reducing and high dispersing capacities. Unexpectedly, the as-prepared Au@Pd/N–mrGO hybrid exhibits much greater activity than its alloy or monometallic counterparts toward hydrogen generation from formic acid aqueous solution without using any additive at room temperature.