Preparation of polyoxometalate stabilized gold nanoparticles and composite assembly with graphene oxide: enhanced electrocatalytic performance

2016 ◽  
Vol 40 (2) ◽  
pp. 985-993 ◽  
Author(s):  
Lin Suo ◽  
Wenmei Gao ◽  
Yu Du ◽  
Ruiqiang Wang ◽  
Lixin Wu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Composite Films ◽  
Electrocatalytic Performance ◽  
Good Electrocatalytic Activity

P5W30 stabilized Au nanoparticles and graphene oxide were fabricated to form composite films exhibiting good electrocatalytic activity for H2O2 reduction.

scholarly journals Electrodeposition–Assisted Assembled Multilayer Films of Gold Nanoparticles and Glucose Oxidase onto Polypyrrole-Reduced Graphene Oxide Matrix and Their Electrocatalytic Activity toward Glucose

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 993 ◽  
Author(s):  
Baoyan Wu ◽  
Shihua Hou ◽  
Yongyong Xue ◽  
Zhan Chen
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Glucose Oxidase ◽  
Reduced Graphene Oxide ◽  
Self Assembly ◽  
Electrocatalytic Activity ◽  
Multilayer Films ◽  
Glucose Biosensor ◽  
Future Design ◽  
Reduced Graphene

The study reports a facile and eco-friendly approach for nanomaterial synthesis and enzyme immobilization. A corresponding glucose biosensor was fabricated by immobilizing the gold nanoparticles (AuNPs) and glucose oxidase (GOD) multilayer films onto the polypyrrole (PPy)/reduced graphene oxide (RGO) modified glassy carbon electrode (GCE) via the electrodeposition and self-assembly. PPy and graphene oxide were first coated on the surface of a bare GCE by the electrodeposition. Then, AuNPs and GOD were alternately immobilized onto PPy-RGO/GCE electrode using the electrodeposition of AuNPs and self-assembly of GOD to obtain AuNPs-GOD multilayer films. The resulting PPy-RGO-(AuNPs-GOD)n/GCE biosensors were used to characterize and assess their electrocatalytic activity toward glucose using cyclic voltammetry and amperometry. The response current increased with the increased number of AuNPs-GOD layers, and the biosensor based on four layers of AuNPs-GOD showed the best performance. The PPy-RGO-(AuNPs-GOD)4/GCE electrode can detect glucose in a linear range from 0.2 mM to 8 mM with a good sensitivity of 0.89 μA/mM, and a detection limit of 5.6 μM (S/N = 3). This study presents a promising eco-friendly biosensor platform with advantages of electrodeposition and self-assembly, and would be helpful for the future design of more complex electrochemical detection systems.

Enhanced electrocatalytic activity of gold nanoparticles on hydroxyapatite nanorods for sensitive hydrazine sensors

2016 ◽  
Vol 4 (17) ◽  
pp. 6385-6394 ◽  
Author(s):  
G. Bharath ◽  
Alberto Naldoni ◽  
K. Hasini Ramsait ◽  
Ahmed Abdel-Wahab ◽  
Rajesh Madhu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Hydrazine Oxidation ◽  
Catalytic Sites

With the synthesized Au/hydroxyapatite (HAp) nanocomposites, the HAp nanorods favored adsorption of hydrazine, thus bringing hydrazine closer to the catalytic sites of Au nanoparticles and increasing the efficiency of hydrazine oxidation.

scholarly journals Comparison of electrocatalytic activity for glucose electrooxidation of gold nanoparticles fabricated by different methods

Chemija ◽  
2019 ◽  
Vol 30 (1) ◽  
Author(s):  
Daina Upskuvienė ◽  
Aldona Balčiūnaitė ◽  
Jūratė Vaičiūnienė ◽  
Algirdas Selskis ◽  
Rimantas Vaitkus ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Carbon Support ◽  
Alkaline Media ◽  
Carbon Powder ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Glucose Electrooxidation

In this study, the gold nanoparticles (AuNPs) without carbon support were prepared using the well-known citrate reduction method. The carbon supported AuNPs nanocomposites were fabricated by two different approaches: chemical adsorption of AuNPs from the prepared citrate stabilized AuNP colloidal solution on the carbon powder surface and one-pot microwave-assisted synthesis. The nanocomposites were characterized using scanning electron microscopy (SEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The electrocatalytic activity of the prepared catalysts was evaluated for the electrooxidation of glucose in an alkaline media using cyclic voltammetry. The highest electrocatalytic activity was observed for the catalyst of carbon supported Au nanoparticles prepared by microwave-assisted synthesis, followed by the catalyst of carbon supported Au nanoparticles prepared by means of the adsorption method, whereas the pure Au nanoparticles without carbon support exhibited the lowest electrocatalytic properties for glucose electrooxidation.

Facile growth of Cu2O hollow cubes on reduced graphene oxide with remarkable electrocatalytic performance for non-enzymatic glucose detection

2017 ◽  
Vol 41 (17) ◽  
pp. 9223-9229 ◽  
Author(s):  
Yuqin Wang ◽  
Zhenyuan Ji ◽  
Xiaoping Shen ◽  
Guoxing Zhu ◽  
Jiheng Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Electrocatalytic Activity ◽  
Glucose Oxidation ◽  
Glucose Detection ◽  
Electrocatalytic Performance ◽  
Reduced Graphene ◽  
Highly Dispersed

A facile and eco-friendly strategy was developed to grow highly dispersed Cu2O hollow nanocubes on RGO sheets, which exhibit excellent electrocatalytic activity for glucose oxidation.

An electrochemical sensor for dopamine based on polydopamine modified reduced graphene oxide anchored with tin dioxide and gold nanoparticles

2017 ◽  
Vol 9 (36) ◽  
pp. 5322-5332 ◽  
Author(s):  
Xiaoqing Cui ◽  
Xian Fang ◽  
Hong Zhao ◽  
Zengxi Li ◽  
Hongxuan Ren
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Reduced Graphene Oxide ◽  
Tin Dioxide ◽  
Au Nanoparticles ◽  
Reduced Graphene

In the present work, polydopamine (PDA) modified reduced graphene oxide (pRGO)/SnO2/Au nanoparticles (NPs) were synthesized.

scholarly journals The interaction effect of bacterial cellulose with gold nanoparticles obtained by metal-vapor synthesis

2019 ◽  
Vol 488 (4) ◽  
pp. 391-396
Author(s):  
M. S. Rubina ◽  
M. A. Pigaleva ◽  
I. E. Butenko ◽  
A. V. Budnikov ◽  
A. V. Naumkin ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ir Spectroscopy ◽  
Bacterial Cellulose ◽  
Interaction Effect ◽  
Au Nanoparticles ◽  
Cellulose Nanofibrils ◽  
Composite Films ◽  
Metal Vapor ◽  
Nanocomposite Materials ◽  
Metal Core

In the present work, a promising method was proposed for the formation of new functional nanocomposite materials based on bacterial cellulose and Au nanoparticles obtained by a biocompatible and environmentally friendly metal vapor synthesis. The structure and composition of the composite films surface were studied by XPS, SEM, and IR spectroscopy. It was determined that Au nanoparticles effectively chemisorb the bacterial cellulose nanofibrils forming nanoparticles with a size of about 25 nm with a metal core-hydrocarbon shell structure.

Solution-processed MoS2nanotubes/reduced graphene oxide nanocomposite as an active electrocatalyst toward the hydrogen evolution reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 70740-70746 ◽  
Author(s):  
Long Song ◽  
Mengjia Zhao ◽  
Xiaoxue Li ◽  
Zhipan Zhang ◽  
Liangti Qu
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Solution Processed ◽  
Good Electrocatalytic Activity ◽  
Reduced Graphene ◽  
Surfactant Assisted ◽  
3D Nanostructure

A hierarchical 3D nanostructure of MoS2nanotubes supported on a reduced graphene oxide network is prepared through a surfactant-assisted lyophilization process and it exhibits good electrocatalytic activity in the hydrogen evolution reaction.

Sputtering deposition of gold nanoparticles onto graphene oxide functionalized with ionic liquids: biosensor materials for cholesterol detection

2017 ◽  
Vol 5 (48) ◽  
pp. 9482-9486 ◽  
Author(s):  
Nathália M. Galdino ◽  
Gabriele S. Brehm ◽  
Roberta Bussamara ◽  
Wellington D. G. Gonçalves ◽  
Gabriel Abarca ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Ionic Liquid ◽  
Graphene Oxide ◽  
Ionic Liquids ◽  
Au Nanoparticles ◽  
Cholesterol Oxidase ◽  
Sputtering Deposition ◽  
Cholesterol Detection

The sputtering deposition of Au nanoparticles onto ionic liquid-graphene oxide combined with cholesterol oxidase affords an efficient biosensor for cholesterol detection.

Sign in / Sign up

Export Citation Format

Share Document