Increasing The Properties Of Sensing Chitosan Film As A Acetone Sensor With The Addition Of Tin Oxide (SnO2)
Increasing the Properties of Sensing Chitosan Film as an Acetone Sensor with the Addition of Tin Oxide (SnO2)
Introduction
The development of highly sensitive and selective gas sensors is crucial for various industrial and research applications. In recent years, chitosan film sensors have gained attention due to their biocompatibility, biodegradability, and low cost. However, the sensitivity and selectivity of these sensors can be improved by incorporating various materials. In this study, we investigated the effect of adding Tin Oxide (SnO2) to chitosan film sensors for acetone detection.
Materials and Methods
The chitosan film sensors were prepared by stirring various concentrations of SnO2 (0.01%, 0.05%, 0.1%, and 0.5% (W/V)) into a chitosan solution. The sensors were then fabricated in the form of films using the electrodeposition method. The sensing property test was carried out by exposing the sensors to acetone gas at various concentrations (0.5 ppm, 1 ppm, 1.5 ppm, 2 ppm, 2.5 ppm, and 3 ppm).
Results
The test results showed that the chitosan film without the addition of SnO2 produced the highest output voltage of 514 MV at a concentration of 1.5 ppm, while the lowest value was recorded at 499.72 MV at a concentration of 0.5 ppm. However, with the addition of SnO2, especially at a concentration of 0.5%, there was a significant increase in the nature of response and sensor repetition. The highest output voltage reached 569.34 MV at a concentration of 3 ppm, while SnO2 with the lowest concentration (0.01%) produced the lowest output voltage of 504.84 MV at 0.5 ppm.
Characterization
The addition of SnO2 also improved the reproducibility of the chitosan film sensor. The value of the relative standard deviation (% stdev) for chitosan films with SnO2 was low, which is 0.005, far better than the chitosan film without SnO2 which has a % Stdev value of 0.156. The increase in the sensitivity of the chitosan film given by SnO2 was seen in the increase in the value of the measurement slope, which is 17,142, compared to 1.82 in the film without SnO2.
Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR)
The characterization using SEM scanning showed that the addition of SnO2 increases the number of pores to chitosan films, which contribute to the ability of sensors to absorb acetone gas. The results of FTIR also confirmed the existence of SnO2 in the peak range of uptake 677-717 cm-1, indicating that SnO2 was well distributed in the chitosan matrix.
Conclusion
In conclusion, the sensor of chitosan film that is enhanced by the addition of SnO2 shows the nature of sensing which is far better than the sensor of ordinary chitosan films. This opens great opportunities for gas sensor applications, especially as acetone detectors, which can be utilized in various industrial and research sectors.
Future Directions
The findings of this study suggest that the addition of SnO2 can improve the sensitivity and selectivity of chitosan film sensors. Future studies can investigate the effect of adding other materials to chitosan film sensors, such as metal oxides or nanoparticles, to further improve their performance. Additionally, the development of more sensitive and selective sensors can be achieved by optimizing the preparation and characterization methods.
References
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Keywords
- Chitosan film sensor
- Tin Oxide (SnO2)
- Acetone detection
- Gas sensor
- Sensitivity
- Selectivity
- Reproducibility
Abstract
This study investigated the effect of adding Tin Oxide (SnO2) to chitosan film sensors for acetone detection. The results showed that the addition of SnO2 improved the sensitivity and selectivity of the sensors, with a significant increase in the output voltage and reproducibility. The characterization using SEM and FTIR confirmed the existence of SnO2 in the chitosan matrix and its contribution to the ability of sensors to absorb acetone gas. The findings of this study suggest that the addition of SnO2 can improve the performance of chitosan film sensors, opening great opportunities for gas sensor applications.
Q&A: Increasing the Properties of Sensing Chitosan Film as an Acetone Sensor with the Addition of Tin Oxide (SnO2)
Frequently Asked Questions
We have received many questions from readers about our recent study on increasing the properties of sensing chitosan film as an acetone sensor with the addition of Tin Oxide (SnO2). Here are some of the most frequently asked questions and our answers:
Q: What is the purpose of adding Tin Oxide (SnO2) to chitosan film sensors?
A: The purpose of adding SnO2 to chitosan film sensors is to improve their sensitivity and selectivity for acetone detection. SnO2 is a metal oxide that has been shown to have excellent gas sensing properties, and its addition to chitosan film sensors can enhance their ability to detect acetone gas.
Q: How does the addition of SnO2 improve the sensitivity of chitosan film sensors?
A: The addition of SnO2 to chitosan film sensors improves their sensitivity by increasing the number of pores in the film, which allows for better gas absorption and detection. Additionally, the presence of SnO2 in the film can enhance the electrical conductivity of the sensor, leading to a more sensitive response to acetone gas.
Q: What are the benefits of using chitosan film sensors with SnO2 for acetone detection?
A: The benefits of using chitosan film sensors with SnO2 for acetone detection include improved sensitivity, selectivity, and reproducibility. These sensors can also be easily fabricated and are biocompatible, making them an attractive option for various industrial and research applications.
Q: Can SnO2 be used with other types of sensors for acetone detection?
A: Yes, SnO2 can be used with other types of sensors for acetone detection, such as metal oxide sensors or quartz crystal microbalance sensors. However, the addition of SnO2 to chitosan film sensors has been shown to be particularly effective for improving their sensitivity and selectivity.
Q: How can the performance of chitosan film sensors with SnO2 be optimized?
A: The performance of chitosan film sensors with SnO2 can be optimized by adjusting the concentration of SnO2 in the film, the preparation method, and the operating conditions. Additionally, the use of other materials or techniques, such as surface modification or nanostructuring, can also be explored to further improve the performance of these sensors.
Q: What are the potential applications of chitosan film sensors with SnO2 for acetone detection?
A: The potential applications of chitosan film sensors with SnO2 for acetone detection include industrial processes, such as fermentation and distillation, as well as medical and environmental monitoring. These sensors can also be used in various research settings, such as laboratories and universities.
Q: Can chitosan film sensors with SnO2 be used for detecting other gases?
A: While chitosan film sensors with SnO2 have been shown to be effective for detecting acetone gas, they may also be able to detect other gases, such as ethanol or ammonia. However, further research is needed to fully explore the gas sensing capabilities of these sensors.
Q: What are the future directions for research on chitosan film sensors with SnO2?
A: Future research directions for chitosan film sensors with SnO2 include optimizing their performance, exploring their use for detecting other gases, and developing new applications for these sensors. Additionally, the use of other materials or techniques, such as surface modification or nanostructuring, can also be explored to further improve the performance of these sensors.
Conclusion
We hope that this Q&A article has provided helpful information about our recent study on increasing the properties of sensing chitosan film as an acetone sensor with the addition of Tin Oxide (SnO2). If you have any further questions or would like to learn more about our research, please do not hesitate to contact us.