One-Step Synthesis of Hybrid Nanocrystals with Rational Tuning of the Morphology

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• 作者：Wei Sang ; Tingting Zheng ; Youcheng Wang ; Xu Li ; Xu Zhao ; Jie Zeng ; J. G. Hou
• 刊名：Nano Letters
• 出版年：2014
• 出版时间：November 12, 2014
• 年：2014
• 卷：14
• 期：11
• 页码：6666-6671
• 全文大小：356K
• ISSN：1530-6992

文摘

Metal鈥搒ulfide hybrid nanocrystals (HNCs) have been of great interest for their distinguished interfacial effect, which gives rise to unique catalytic properties. However, most of the reported metal鈥搒ulfide HNCs were synthesized via two-step approaches and few were fabricated based on the one-step strategies. Herein, we report a facile one-pot synthesis of CuPt鈥揅u₂S, Pt鈥揅u₂S HNCs, and CuPt nanocubes by simply changing the Pt precursor types. 1-Hexadecanethiol (HDT) was employed in this system to mediate the reduction of metal precursors and also as capping agent and sulfur source. Moreover, CuPd鈥揅u₂S and Au鈥揅u₂S HNCs were successfully prepared by using this one-step method. The catalytic properties of the obtained three nanocrystals were investigated in hydrogenation of cinnamaldehyde. Results show that CuPt鈥揅u₂S HNCs exhibited the highest conversion rate and the highest selectivity toward hydrocinnamaldehyde while 3-phenyl-1-propanol was the only product over Pt鈥揅u₂S HNCs.

Keywords:

one-step synthesis; metal鈭抯ulfide HNCs; structure control; hydrogenation of cinnamaldehyde; synergistic effect; interfacial function