scholarly journals Facile synthesis of AgNPs on reduced graphene oxide for highly sensitive simultaneous detection of heavy metal ions

RSC Advances ◽  
2017 ◽  
Vol 7 (35) ◽  
pp. 21618-21624 ◽  
Author(s):  
Shengbo Sang ◽  
Dan Li ◽  
Hui Zhang ◽  
Youyi Sun ◽  
Aoqun Jian ◽  
...  

Silver nanoparticles grown on reduced graphene oxide (AgNPs/RGO) were successfully synthesized via a facile in situ method.

Author(s):  
Xiaoyun Xu ◽  
Xiaoyi Lv ◽  
Fei Tan ◽  
Yanping Li ◽  
Chao Geng ◽  
...  

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.


2021 ◽  
Author(s):  
Chérif DRIDI ◽  
Zina Fredj ◽  
Maroua Moslah

Electrochemical detectionof serotonin (5-hydroxytryptamine 5-HT) is proposed for the first time using a cost effective and eco-friendly nanocomposite of AgNPs and rGO which is synthesized through in situ green reduction...


The Analyst ◽  
2015 ◽  
Vol 140 (9) ◽  
pp. 3183-3192 ◽  
Author(s):  
Li-Xian Chen ◽  
Jie-Ning Zheng ◽  
Ai-Jun Wang ◽  
Lan-Ju Wu ◽  
Jian-Rong Chen ◽  
...  

A simple, in situ reduction method was developed for synthesis of PdAg NFs/rGO nanocomposite, which displayed improved electrocatalytic performances for simultaneous detection of AA, DA, and UA.


2017 ◽  
Vol 46 (40) ◽  
pp. 13845-13853 ◽  
Author(s):  
Congying Song ◽  
Xianzhi Yin ◽  
Biaopeng Li ◽  
Ke Ye ◽  
Kai Zhu ◽  
...  

A three-dimensional (3D) catalyst electrode of Co3O4nanosheetsin situformed on reduced graphene oxide modified Ni foam (Co3O4/rGO@Ni foam) for H2O2electroreduction is prepared by a two-step hydrothermal method.


RSC Advances ◽  
2020 ◽  
Vol 10 (68) ◽  
pp. 41600-41611
Author(s):  
A. Farouk ◽  
S. El-Sayed Saeed ◽  
S. Sharaf ◽  
M. M. Abd El-Hady

Silver nanoparticles were in situ prepared on the surface of linen fabric coated by graphene oxide (GO).


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