Reduced graphene oxide-zinc oxide nano-composites for gas sensing applications

2018 ◽  
Vol 3 (4) ◽  
pp. 193-198
Author(s):  
Sitakshi Gupta
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Nano Composites ◽  
Sensing Applications ◽  
Reduced Graphene

Reduced Graphene Oxide–TiO2 Nanotube Composite: Comprehensive Study for Gas-Sensing Applications

2018 ◽  
Vol 1 (12) ◽  
pp. 7098-7105 ◽  
Author(s):  
Vardan Galstyan ◽  
Andrea Ponzoni ◽  
Iskandar Kholmanov ◽  
Marta M. Natile ◽  
Elisabetta Comini ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Tio2 Nanotube ◽  
Sensing Applications ◽  
Reduced Graphene ◽  
Comprehensive Study

Studies on NH3 gas sensing by zinc oxide nanowire-reduced graphene oxide nanocomposites

2017 ◽  
Vol 252 ◽  
pp. 284-294 ◽  
Author(s):  
Tao Wang ◽  
Zhen Sun ◽  
Da Huang ◽  
Zhi Yang ◽  
Qian Ji ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene ◽  
Zinc Oxide Nanowire

scholarly journals Reduced Graphene Oxide (rGO)-Loaded Metal-Oxide Nanofiber Gas Sensors: An Overview

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1352
Author(s):  
Sanjit Manohar Majhi ◽  
Ali Mirzaei ◽  
Hyoun Woo Kim ◽  
Sang Sub Kim
Keyword(s):  
Graphene Oxide ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Reduced Graphene Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Reduced Form ◽  
Sensing Applications ◽  
Reduced Graphene ◽  
Electrospinning Method

Reduced graphene oxide (rGO) is a reduced form of graphene oxide used extensively in gas sensing applications. On the other hand, in its pristine form, graphene has shortages and is generally utilized in combination with other metal oxides to improve gas sensing capabilities. There are different ways of adding rGO to different metal oxides with various morphologies. This study focuses on rGO-loaded metal oxide nanofiber (NF) synthesized using an electrospinning method. Different amounts of rGO were added to the metal oxide precursors, and after electrospinning, the gas response is enhanced through different sensing mechanisms. This review paper discusses rGO-loaded metal oxide NFs gas sensors.

scholarly journals Synthesis of Cu2O-Modified Reduced Graphene Oxide for NO2 Sensors

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1958
Author(s):  
Manman Huang ◽  
Yanyan Wang ◽  
Shuyang Ying ◽  
Zhekun Wu ◽  
Weixiao Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Thermal Reduction ◽  
Oxide Semiconductors ◽  
Research Attention ◽  
Sensing Applications ◽  
Reduced Graphene ◽  
Significant Research ◽  
P Type

Nowadays, metal oxide semiconductors (MOS)-reduced graphene oxide (rGO) nanocomposites have attracted significant research attention for gas sensing applications. Herein, a novel composite material is synthesized by combining two p-type semiconductors, i.e., Cu2O and rGO, and a p-p-type gas sensor is assembled for NO2 detection. Briefly, polypyrrole-coated cuprous oxide nanowires (PPy/Cu2O) are prepared via hydrothermal method and combined with graphene oxide (GO). Then, the nanocomposite (rGO/PPy/Cu2O) is obtained by using high-temperature thermal reduction under Ar atmosphere. The results reveal that the as-prepared rGO/PPy/Cu2O nanocomposite exhibits a maximum NO2 response of 42.5% and is capable of detecting NO2 at a low concentration of 200 ppb. Overall, the as-prepared rGO/PPy/Cu2O nanocomposite demonstrates excellent sensitivity, reversibility, repeatability, and selectivity for NO2 sensing applications.

The ZnFe2O4@mZnO-N/RGO nano-composites as a carrier and an intelligent releaser drug with dually pH- and ultrasound-triggered controlled

2021 ◽  
Author(s):  
Mojtaba Rostami ◽  
Ali Sobhani-Nasab ◽  
Mahdi Fasihi-Ramandi ◽  
Alireza Badiei ◽  
Mehdi Rahimi-Nasrabadi ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zinc Ferrite ◽  
Ph Sensitive ◽  
Nano Composites ◽  
Nitrogen Doped ◽  
Reduced Graphene

In this paper, zinc ferrite@meso-porous (abbreviated as m) zinc oxide-nitrogen doped reduced graphene oxide (ZnFe2O4@mZnO-N/RGO) and zinc ferrite@mZnO-reduced graphene oxide (ZnFe2O4@mZnO-RGO) dual ultrasound (US) and pH-sensitive nano-devices have been prepared...

Reduced graphene oxide anchored with zinc oxide nanoparticles with enhanced photocatalytic activity and gas sensing properties

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60253-60259 ◽  
Author(s):  
Jianjiang He ◽  
Chunge Niu ◽  
Chao Yang ◽  
Jide Wang ◽  
Xintai Su
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zinc Oxide Nanoparticles ◽  
Gas Sensing ◽  
Oxide Nanoparticles ◽  
Reduced Graphene ◽  
Gas Sensing Properties ◽  
Calcination Method

Reduced graphene oxide (rGO)–zinc oxide (ZnO) composites were synthesized by a two-step hydrolysis–calcination method, using GO and Zn(Ac)2 as precursors.

Zinc Oxide/Reduced Graphene Oxide Nanocomposites for Rapid Detection of Toluene Gas at Room Temperature

2020 ◽  
Vol 18 (10) ◽  
pp. 745-749
Author(s):  
Chih-Chia Wang ◽  
Chiu-Hung Liu ◽  
Hsuan-Hua Hsieh ◽  
Chih-Wei Tang ◽  
Chen-Bin Wang
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Fast Response ◽  
Reduced Graphene ◽  
New Strategy ◽  
Recovery Times ◽  
Response And Recovery

In this study, a nanostructured zinc oxide/reduced graphene oxide (ZnO/rGO) composite was deposited on a quartz crystal microbalance (QCM) as a toluene gas sensor at room temperature. A series of ZnO, rGO and ZnO/rGO sensing materials was fabricated and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and Raman spectroscopy. There was significant efficiency of the ZnO/rGO composite on the sensing performance for toluene. For specific gas fluxes, the nanostructured ZnO/rGO offered sufficient paths and region for vapor diffusion and adsorption. The sensing test results illustrated that the nanostructured ZnO/rGO composite showed significant enhancement in the frequency shifts (△f) for toluene comparing to pure ZnO and rGO. Also, the ZnO/rGO-coated QCM sensor displayed a fast response (both the response and recovery times < 30 s) and reproducibility for sensing toluene gas at room temperature. We believe that the novel insights on ambient temperature gas sensing on nanostructured ZnO/rGO composite could provide a new strategy for preparing a highly efficient sensing materials.

Enhanced gas sensing and photocatalytic activity of reduced graphene oxide loaded TiO2 nanoparticles

2021 ◽  
pp. 138897
Author(s):  
Suresh Sagadevan ◽  
J. Anita Lett ◽  
Getu Kassegn Weldegebrieal ◽  
Md Rokon ud Dowla Biswas ◽  
Won Chun Oh ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene
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