<i>In situ</i>reduced graphene oxide interlayer for improving electrode performance in ZnO nanorods

Venkatesan, A.; Ramesha, C. K.; Kannan, E. S.

doi:10.1088/0022-3727/49/24/245301

Cited by 6 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With a further increase in rGO concentration up to 1.5 wt %, a sudden increase in sensor current is observed. The main cause behind current conduction may be the formation of conduction path between two IDEs because of loading of large rGO concentration on Ni-doped ZnO nanostructures . Therefore, the sensor shows enhanced current conduction, as shown in Figure b.…”

Section: Resultsmentioning

confidence: 99%

Improved Sensitivity with Low Limit of Detection of a Hydrogen Gas Sensor Based on rGO-Loaded Ni-Doped ZnO Nanostructures

Bhati

Ranwa

Rajamani

et al. 2018

ACS Appl. Mater. Interfaces

160

View full text Add to dashboard Cite

We report enhanced hydrogen-gas-sensing performance of a Ni-doped ZnO sensor decorated with the optimum concentration of reduced graphene oxide (rGO). Ni-doped ZnO nanoplates were grown by radio frequency sputtering, rGO was synthesized by Hummer's method and decorated by the drop cast method of various concentration of rGO (0-1.5 wt %). The current-voltage characteristics of the rGO-loaded sensor are highly influenced by the loading concentration of rGO, where current conduction decreases and sensor resistance increases as the rGO concentration is increased up to 0.75 wt % because of the formation of various Schottky heterojunctions at rGO/ZnO interfaces. With the combined effect of more active site availability and formation of various p-n heterojunctions due to the optimum loading concentration of rGO (0.75 wt %), the sensor shows the maximum sensing response of ∼63.8% for 100 ppm hydrogen at moderate operating temperature (150 °C). The rGO-loaded sensors were able to detect a minimum of 1 ppm hydrogen concentration and showed high selectivity. However, a further increase in the rGO concentration (1.5 wt %) leads to the reduction of the relative response of hydrogen gas, ascribed to the formation of interconnections of rGO between electrodes. Therefore, it reduces the total resistance of the sensor and minimizes the effect of p-n heterojunction on sensor response.

show abstract

Section: Resultsmentioning

confidence: 99%

Improved Sensitivity with Low Limit of Detection of a Hydrogen Gas Sensor Based on rGO-Loaded Ni-Doped ZnO Nanostructures

Bhati

Ranwa

Rajamani

et al. 2018

ACS Appl. Mater. Interfaces

160

View full text Add to dashboard Cite

show abstract

“…In addition to providing extra surface area for the adsorption sites and for the reaction with the analytes, the RGO platelets also may play a critical role in the electrical transport. RGO platelets reduce the height of the potential barrier for electron tunneling acting as a highly conductive electrical path for the transport of electrons through the nanostructure [34]. Therefore, RGO improves the sensing performance of ZnO.…”

Section: Resultsmentioning

confidence: 99%

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

Galstyan¹,

Comini²,

Kholmanov³

et al. 2016

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

SummaryA hybrid nanostructure based on reduced graphene oxide and ZnO has been obtained for the detection of volatile organic compounds. The sensing properties of the hybrid structure have been studied for different concentrations of ethanol and acetone. The response of the hybrid material is significantly higher compared to pristine ZnO nanostructures. The obtained results have shown that the nanohybrid is a promising structure for the monitoring of environmental pollutants and for the application of breath tests in assessment of exposure to volatile organic compounds.

show abstract

Fabrication of Graphene-Supported Palladium Nanoparticles-Decorated Zinc Oxide Nanorods for Potential Application

Shukla

2018

J Supercond Nov Magn

View full text Add to dashboard Cite

In situreduced graphene oxide interlayer for improving electrode performance in ZnO nanorods

Cited by 6 publications

References 37 publications

Improved Sensitivity with Low Limit of Detection of a Hydrogen Gas Sensor Based on rGO-Loaded Ni-Doped ZnO Nanostructures

Improved Sensitivity with Low Limit of Detection of a Hydrogen Gas Sensor Based on rGO-Loaded Ni-Doped ZnO Nanostructures

A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors

Fabrication of Graphene-Supported Palladium Nanoparticles-Decorated Zinc Oxide Nanorods for Potential Application

Contact Info

Product

Resources

About