Plasmonic photo-assisted electrochemical sensor for detection of trace lead ions based on Au anchored on two-dimensional g-C3N4/graphene nanosheets

• 作者: Jia-Yue Hu Zhi Li Chun-Yang Zhai Jun-Feng Wang Li-Xi Zeng Ming-Shan Zhu
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 1727-1737
• 页数: 11页
• 语种: 英文

摘要

In this paper,a plasmonic photo-assisted elec-trochemical sensor,Au anchored on two-dimensional(2D)graphitic carbon nitride(g-C3N4)/reduced graphene oxide(rGO)nanosheets(Au/g-C3N4/rGO),was facile fabricated.The morphology and structure of the composite are char-acterized by transmission electron microscope,X-ray photoelectron spectroscopy,X-ray diffraction and ultravi-olet-visible spectrophotometer(UV-Vis).Based on the semiconductor of g-C3N4 and optical properties of surface plasmon resonance for Au,the as-prepared Au/g-C3N4/rGO showed high sensitivity for the detection of trace lead ion[Pb(Ⅱ)]by differential pulse anodic stripping voltam-metry in the presence of visible light illumination.Under optimized conditions,the limit of detection(signal-to-noise ratio(S/N)=3)Pb(Ⅱ)detection can be low to 0.1 nmol·L-1.In addition,the interference research and real soil sample detection were measured to confirm the possibility of practical applications.