Sensor Calibration through accurate gas flow control

High sensitive reduced graphene oxide-based room temperature ionic liquid electrochemical gas sensor with carbon-gold nanocomposites amplification

Gas sensors have received extensive attractions due to their critical roles in environmental monitoring, industrial manufacture, and human safety. This paper for the first time introduces carbon-gold nanocomposites on a reduced graphene oxide-based electrochemical gas sensor for highly sensitive gas detection. Carbon-gold nanocomposites (CGNs) were synthesized by glucose carbonization and gold nanoparticles deposition using the hydrothermal method. Reduced graphene oxide (RGO) was electrochemically deposited on a screen-printed gold electrode with subsequent modification of CGNs. To achieve a long lifetime and good stability, thin-film room temperature ionic liquid (RTIL) was utilized as the electrolyte featuring negligible evaporation and large potential window, thus implementing the high sensitive RTIL-based electrochemical gas sensor. The amplification effect of RGO and CGNs modification was investigated using cyclic voltammetry, chronoamperometry and transient double potential amperometry (DPA), which reveals the significant enhancement of sensor performance by synergic application of RGO and CGNs. The sensor was calibrated for oxygen detection from 0.42% to 21% with good sensitivity and linearity. The reproducibility of the sensor using chronoamperometry and transient DPA was also studied with excellent reproducibility. The study paves a new way of implementing high sensitive electrochemical gas sensors for rapid monitoring of gas exposure.

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GAS MIXER VS MASS FLOW CONTROLLER

The GAS MIXER channels it’s more compact than typical flow controller meters and can be specifically calibrated on the mixture to be used.

SUCCESSFUL ACHIEVEMENT

We helped the Zhejiang University to get highly precise and stable microflows of gas to calibrate sensors in an easy way thanks to our instrument and software.

TIME SAVINGS

Easier setup management of the hardware. Easier setup management of the software

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MICRO FLOWS. No Cut-Off

MCQ GB100 Series allows you to control the flow in all the calibration range, from 0,1 ml/min to 500 ml/min with NO cut-off

FLOW STABILITY

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