Pressure-Induced Phase Engineering of Gold Nanostructures

Li, Qian1; Niu, Wenxin2; Liu, Xingchen3,4; Chen, Ye2; Wu, Xiaotong1; Wen, Xiaodong4; Wang, Zhongwu5; Zhang, Hua2; Quan, Zewei1

2018-11-21

10.1021/jacs.8b08647

Journal of the American Chemical Society   影响因子和分区

0002-7863

Although phase engineering of a noble metal, gold (Au), is of critical importance for both fundamental research and potential application, it still remains a big challenge in wet-chemical syntheses. In this work, we report the irreversible transformation from the hexagonal 4H to face centered cubic (fcc) phase in Au nanoribbons (NRBs) through high pressure treatment, which has not been discovered in metals. The relative percentage of 4H and fcc phases in the recovered Au NRBs depends directly on the peak pressure applied to the original 4H Au NRBs, enabling a phase engineering of Au nanostructures. Interestingly, compared to the pure 4H Au NRBs, the crystal-phase-heterostructured 4H/fcc Au nanorods require less energy to complete the phase transition process with a lower transition pressure and in a narrower range. Finally, the atom-based transformation pathway during the 4H-to-fcc phase transition is revealed experimentally, which is supported by the first-principle calculations. This work not only demonstrates the stability of 4H Au nanostructure and the pressure-induced 4H-to-fcc transition mechanism but also provides a strategy for the phase engineering of noble metal nanostructures.

SCI ; EI

英语

NI期刊

第一 ; 通讯

NTU under Start-Up Grant in Singapore[M4081296.070.500000]

Chemistry

Chemistry, Multidisciplinary

WOS:000451496800036

AMER CHEMICAL SOC

20184806143315

Gold ; Nanorods

Precious Metals:547.1 ; Nanotechnology:761 ; Solid State Physics:933

Web of Science

1.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
2.Nanyang Technol Univ, Sch Mat Sci & Engn, Ctr Programmable Mat, 50 Nanyang Ave, Singapore 639798, Singapore
3.Cornell Univ, Dept Chem & Chem Biol, Baker Lab, Ithaca, NY 14853 USA
4.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
5.Cornell Univ, CHESS, Ithaca, NY 14853 USA

Li, Qian,Niu, Wenxin,Liu, Xingchen,et al. Pressure-Induced Phase Engineering of Gold Nanostructures[J]. Journal of the American Chemical Society,2018,140(46):15783-15790.

Li, Qian.,Niu, Wenxin.,Liu, Xingchen.,Chen, Ye.,Wu, Xiaotong.,...&Quan, Zewei.(2018).Pressure-Induced Phase Engineering of Gold Nanostructures.Journal of the American Chemical Society,140(46),15783-15790.

Li, Qian,et al."Pressure-Induced Phase Engineering of Gold Nanostructures".Journal of the American Chemical Society 140.46(2018):15783-15790.