Synergism of spray-pyrolyzed aliovalent Ga (iii) ions and ZnO nanostructures for selective sensing of hazardous CO gas towards low ppm levels

Ani, Aninamol; Poornesh, P.; Antony, Albin; Chattopadhyay, Saikat

doi:10.1016/j.snb.2023.134827

Cited by 3 publications

(3 citation statements)

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“…Metal doping by replacing Zn 2+ and O 2in the crystal network of zinc oxide can adjust the natural band gap and its conduction behavior [79]. Recently, the successful doping of gallium on zinc oxide has been done by Ani and colleagues [80] to measure small amounts of carbon monoxide gas. The preparation procedure is shown in Fig.…”

Section: Spray Pyrolysis Techniquementioning

confidence: 99%

Recent advances in the synthesis of ZnO-based electrochemical sensors

Akhoondi,

Ahmad,

Nawaz Sharif

et al. 2023

Synth. Sinter.

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Until now, various composites based on zinc oxide (ZnO) have been investigated in electrochemical sensors. The physical and electrochemical properties of ZnO and its structure can improve the selectivity, sensitivity, and adaptability of nanocomposites. Therefore, the focus on the fabrication of cheap ZnO-based electrodes with affordable and easy transportability has increased. In addition, the electrochemical behavior is affected by the structure and morphology of the ZnO-based composite in detecting pollutants such as volatile organic compounds, heavy metals, and toxins. Furthermore, ZnO-based nanostructures are efficient in the fabrication of electrochemical sensors in the food industry, pharmaceutical analysis, and medical diagnostics. In this review, various techniques in the synthesis of ZnO-based electrodes and their effect on the particle size, shape, and morphology of compounds have been collected. Since the performance of chemical sensors has a direct relationship with the structure of the composite used in its electrode, it is necessary to discuss the new production methods, new concepts, strategies, and challenges. Additionally, new gains highlight recent developments and sensing of various analytes in the monitoring systems. These sensors have demonstrated a strong growth acceleration which could lead to the development of recent technologies. At last, an optimistic outlook is provided on the future of ZnO-based sensors and their challenges.

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Section: Spray Pyrolysis Techniquementioning

confidence: 99%

Recent advances in the synthesis of ZnO-based electrochemical sensors

Akhoondi,

Ahmad,

Nawaz Sharif

et al. 2023

Synth. Sinter.

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“…Infrared CO sensors have a large volume and high price. Compared with their counterpart like an electrochemical CO sensor, semiconductor CO sensors have several advantages such as low cost, high robustness, and a long lifetime, thus are widely applied in CO monitoring [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. Many semiconductors such as carbon nanotubes, metal oxides, and organic compounds have been studied for use in CO sensors [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Many semiconductors such as carbon nanotubes, metal oxides, and organic compounds have been studied for use in CO sensors [23][24][25][26]. Among all the semiconductor sensing materials, metal oxides are the cheapest and most stable ones [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. It is a trend to incorporate MOS CO sensors into mobile phones or other portable devices to facilitate CO measurement [27].…”

Section: Introductionmentioning

confidence: 99%

A Mini-Review on Metal Oxide Semiconductor Gas Sensors for Carbon Monoxide Detection at Room Temperature

He,

Jiao

2024

Chemosensors

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Carbon monoxide can cause severe harm to humans even at low concentrations. Metal Oxide Semiconductor (MOS) carbon monoxide gas sensors have excellent sensing performance regarding sensitivity, selectivity, response speed, and stability, making them very desirable candidates for carbon monoxide monitoring. However, MOS gas sensors generally work at temperatures higher than room temperature, and need a heating source that causes high power consumption. High power consumption is a great problem for long-term portable monitoring devices for point-of-care or wireless sensor nodes for IoT application. Room-temperature MOS carbon monoxide gas sensors can function well without a heater, making them rather suitable for IoT or portable applications. This review first introduces the primary working mechanism of MOS carbon monoxide sensors and then gives a detailed introduction to and analysis of room-temperature MOS carbon monoxide sensing materials, such as ZnO, SnO2, and TiO2. Lastly, several mechanisms for room-temperature carbon monoxide sensors based on MOSs are discussed. The review will be interesting to engineers and researchers working on MOS gas sensors.

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