双金属片
表面等离子共振
材料科学
异质结
红外线的
纳米晶
杰纳斯
催化作用
紫外线
纳米技术
光电子学
化学工程
纳米颗粒
化学
金属
光学
冶金
生物化学
物理
工程类
作者
Jie Chen,Wenhao Xu,Xingjin Li,Libo Sun,Zihan Zhong,Zitao Zhang,Yun Tang
标识
DOI:10.1016/j.jcis.2022.08.115
摘要
The optical properties of cost-effective Ag-Cu bimetallic nanocrystals, with synergistically enhanced catalytic and biological activities, are limited within ultraviolet-visible region due to lack of morphology control. In order to overcome this constraint, two-dimensional (2D) Ag-Cu bimetallic heterostructures were designed and synthesized by a seed-mediated colloidal growth method. The conformal Cu domain was epitaxially deposited on Ag nanoplates with different spatial configuration under retention of their 2D shape. Both of the 2D Ag-Cu core@shell and Janus structures display tunable localized surface plasmon resonance from visible to near infrared regions. The results of catalytic reduction of 4-nitrophenol show that the 2D Ag-Cu core@shell structure has better synergistic catalytic performance than Janus structure and Ag plates. In addition to surface-related synergistically enhanced bactericidal performance, their antibacterial effect can also be significantly enhanced by near infrared light irradiation. These results indicate that 2D Ag-Cu heterostructures can benefit from both synergistically improved surface activity and great optical responsive characteristics.
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