Metal Nanoparticles Immobilized on Carbon Nanodots as Highly Active Catalysts for Hydrogen Generation from Hydrazine in Aqueous Solution
Metal Nanoparticles Immobilized on Carbon Nanodots as Highly Active Catalysts for Hydrogen Generation from Hydrazine in Aqueous Solution
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DOI：
10.1002/cctc.201402735
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发表时间：
2015-02-01
期刊：
影响因子：
4.5
通讯作者：
Xu, Qiang
中科院分区：
文献类型：
--
作者：
Sun, Jian-Ke;Xu, Qiang
在碳纳米点（CNDs）上生长的分散良好的PtNi纳米颗粒（NPs）是由金属有机骨架（ZIF-8）衍生的，在CNDs的存在下通过简单还原金属前体来合成的，其中CNDs被证明是一种强大的分散剂和PtNi NPs的独特支持。所制得的PtNi-CND催化剂具有几乎100%的H-2选择性，在室温下对水合肼具有较高的分解活性。这种优异的催化性能可能是CND载体和PtNi NPs协同作用的结果。利用CNDs作为载体来锚定活性组分NPs，从而促进催化反应过程中的电子传递和质量传递动力学，为设计高性能催化剂开辟了新的途径。
Well-dispersed PtNi nanoparticles (NPs) grown on carbon nanodots (CNDs) derived from a metal-organic framework (ZIF-8) are synthesized by a simple reduction of metal precursors in the presence of CNDs, wherein the CNDs prove to be a powerful dispersion agent and distinct support for the PtNi NPs. The resultant PtNi-CND catalyst exerts almost 100% H-2 selectivity and a high activity for the decomposition of hydrous hydrazine at room temperature. This excellent catalytic performance might be a result of the synergistic effect of the CND support and the PtNi NPs. The utilization of CNDs as a support to anchor the active component NPs and thus to facilitate the electron transfer and mass transport kinetics during the catalytic reaction process opens up new avenues to design high-performance catalysts.