Ultrasensitive SERS Detection by Defect Engineering on Single Cu₂O Superstructure Particle

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• 作者：Jie Lin ; Yang Shang ; Xiaoxia Li ; Jian Yu ; Xiaotian Wang and Lin Guo
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 2, 2017
• 年：2017
• 卷：29
• 期：5
• 全文大小：2548K
• ISSN：1521-4095

文摘

A Cu₂O superstructure is constructed through a recrystallization-induced self-assembly strategy. Single Cu₂O superstructure particle exhibits an outstanding surface-enhanced Raman spectroscopy performance with the limit of detection as low as 10⁻⁹ mol L⁻¹ and metal comparable enhancement factor (8 × 10⁵) due to the synergetic effect of vacancies defect-facilitated charge-transfer process and copper vacancies defect-induced electrostatic adsorption.