Highly controlled synthesis of symmetrically branched tripod and pentapod nanocrystals with enhanced photocatalytic performance

Luoshan，Meng Dai1,2; Yang，Yang1,2; Dou，Zhen Long1; Zhang，Feng Yuan2; Yan，Hang Yu2; Zhou，Li1; Wang，Qu Quan3

2024-09-01

10.1016/j.jcis.2024.04.225

Journal of Colloid and Interface Science   影响因子和分区

0021-9797

1095-7103

Anisotropic nanostructures with tunable optical properties induced by controllable size and symmetry have attracted much attention in many applications. Herein, we report a controlled synthesis of symmetrically branched AuCu alloyed nanocrystals. By varying Au:Cu atom ratio in precursor, Y-shaped tripods with three-fold symmetry and star-shaped pentapods with five-fold symmetry are synthesized, respectively. The growth mechanism of AuCu tripods from icosahedral seeds and AuCu pentapods from decahedral seeds is revealed. Aiming to excellent photocatalytic performance, CdS nanocrystals are controlled grown onto the sharp tips of AuCu tripods and pentapods. In addition, a carrier-selective blocking layer of AgS is introduced between AuCu and CdS, for achieving effective charge separation in AuCu-AgS-CdS nanohybrids. Through evaluating the photocatalytic performance by hydrogen generation experiments, the AuCu-AgS-CdS tripod nanocrystals exhibit an optimized hydrogen evolution rate of 2182 μmol·g·h. These findings will contribute greatly to the understanding of complex nanoparticle growth mechanism and provide a strategy for the design of anisotropic nanoalloys for widely photocatalytic applications.

Branched nanoalloys Charge separation Decahedrons Icosahedrons Photocatalytic hydrogen generation

SCI ; EI

英语

其他

20242016077965

Anisotropy ; Binary alloys ; Hydrogen production ; II-VI semiconductors ; Nanocrystals ; Optical properties ; Photocatalytic activity

Gas Fuels:522 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystalline Solids:933.1

CHEMISTRY

2-s2.0-85192526114

Scopus

1.Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan,430072,China
2.School of Science,Hubei University of Technology,Wuhan,430068,China
3.Department of Physics,College of Science,Southern University of Science and Technology,Shenzhen,518055,China

Luoshan，Meng Dai,Yang，Yang,Dou，Zhen Long,et al. Highly controlled synthesis of symmetrically branched tripod and pentapod nanocrystals with enhanced photocatalytic performance[J]. Journal of Colloid and Interface Science,2024,669:1022-1030.

Luoshan，Meng Dai.,Yang，Yang.,Dou，Zhen Long.,Zhang，Feng Yuan.,Yan，Hang Yu.,...&Wang，Qu Quan.(2024).Highly controlled synthesis of symmetrically branched tripod and pentapod nanocrystals with enhanced photocatalytic performance.Journal of Colloid and Interface Science,669,1022-1030.

Luoshan，Meng Dai,et al."Highly controlled synthesis of symmetrically branched tripod and pentapod nanocrystals with enhanced photocatalytic performance".Journal of Colloid and Interface Science 669(2024):1022-1030.