scholarly journals Corrigendum: Nanoscale Zero‐Valent Iron Particles Supported on Reduced Graphene Oxides Using a Plasma Technique and Their Application for Removal of Heavy‐Metal Ions

2019 ◽  
Vol 14 (23) ◽  
pp. 4429-4429
Author(s):  
Jie Li ◽  
Changlun Chen ◽  
Rui Zhang ◽  
Xiangke Wang
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Zero Valent Iron ◽  
Iron Particles ◽  
Graphene Oxides ◽  
Plasma Technique ◽  
Reduced Graphene ◽  
Nanoscale Zero Valent Iron ◽  
Reduced Graphene Oxides

Application of Graphene-Based Nanocomposites in Electrochemical Detection of Heavy Metal Ions

2020 ◽  
Vol 12 (3) ◽  
pp. 435-440 ◽  
Author(s):  
Xue Chen ◽  
Yongcun Pei
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Electrochemical Detection ◽  
Heavy Metal Ions ◽  
Electrochemical Sensors ◽  
Graphene Oxides ◽  
Experimental Conditions ◽  
Reduced Graphene ◽  
Reduced Graphene Oxides ◽  
Interference Tests

The purpose of this study was to explore the application of graphene-based nanocomposites in electrochemical detection of heavy metal ions. In this study, Graphene oxide (GO) was synthesized with improved Hummers method, and flower-like MoS2/rGO nanocomposite was synthesized with hydrothermal method and used as electrode modification material. In addition, scanning electron microscopy (SEM) and X-ray images were used to observe the characterization of the prepared samples and to detect the sensitivity of four heavy metal ions under optimal experimental conditions. The results showed that the reduced graphene oxides were coated with a large number of flower-like MoS2 and laid on the reduced graphene oxides. And in electrochemical experiments, adsorption experiments and interference tests, MoS2/rGO nanocomposites showed satisfactory performance for Pb(II). Therefore, this study provided a new strategy for the development of new nanocomposites composites as electrochemical sensors to detect the heavy metal ions in the aquatic environment.

Simultaneous Electrochemical Detection of Multiple Heavy-Metal Ions Based on Furfural/Reduced Graphene Oxide Composites

2021 ◽  
Author(s):  
Xiaoyun Xu ◽  
Xiaoyi Lv ◽  
Fei Tan ◽  
Yanping Li ◽  
Chao Geng ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Metal Ions ◽  
Reduced Graphene Oxide ◽  
Heavy Metal Ions ◽  
Simultaneous Detection ◽  
Reduced Graphene ◽  
The Matrix ◽  
One Step ◽  
Oxide Composites

Abstract An efficient and sensitive electrochemical sensor for simultaneous detection of heavy metal ions was developed based on furfural/reduced graphene oxide composites (FF/RGO). The preparation of FF/RGO were performed through a one-step high-pressure assisted hydrothermal treatment, which is recommended as a green, convenient, and efficient way for the reduction of graphene oxide and the production of FF/RGO composites. RGO not only serves as the skeleton for furfural loading but also improves the conductivity of the composites in the matrix. FF/RGO with large specific surface area and abundant oxygen-containing functional groups was used to provide more binding sites for the effificient adsorption of heavy-metal ions due to the interaction between hydrophilic groups (-COOH, -OH, and -CHO) and metal cations. The developed sensor showed identifiable electrochemical response toward the heavy metal ions separately and simultaneously, exhibiting superior stability, outstanding sensitivity, selectivity and excellent analytical performance. Impressively, the sensor developed in this experiment has been successfully applied to the simultaneous determination of various heavy metal ions in actual samples, which has definitely exhibited a promising prospect in practical application.

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