Self-standing MWCNTs based gas sensor for detection of environmental limit of CO2

Ahmad, Zohauddin; Naseem, N.; Manzoor, Samrah; Talib, Mohammad; Islam, S. S.; Mishra, Prabhash

doi:10.1016/j.mseb.2020.114528

Cited by 37 publications

(10 citation statements)

References 38 publications

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“…Variations in the barrier potential of CNTs-metal contact or CNTs-CNTs junctions cause changes in CNT resistance in defect free CNTs. The gases released during the combustion of fossil fuels, such as CO 2 [ 131 , 132 , 133 ], CO [ 134 , 135 , 136 , 137 ], SO 2 [ 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 ], NO 2 [ 136 , 148 , 149 , 150 , 151 , 152 , 153 , 154 , 155 ], and NO [ 156 , 157 ], adsorb on the CNT surface either physically or chemically. Figure 6 shows the bonding behaviour and charge transfer between CNTs and the molecules of C–O.…”

Section: Potential Applications Of Cntsmentioning

confidence: 99%

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

et al. 2021

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Developments in the synthesis and scalable manufacturing of carbon nanomaterials like carbon nanotubes (CNTs) have been widely used in the polymer material industry over the last few decades, resulting in a series of fascinating multifunctional composites used in fields ranging from portable electronic devices, entertainment and sports to the military, aerospace, and automotive sectors. CNTs offer good thermal and electrical properties, as well as a low density and a high Young’s modulus, making them suitable nanofillers for polymer composites. As mechanical reinforcements for structural applications CNTs are unique due to their nano-dimensions and size, as well as their incredible strength. Although a large number of studies have been conducted on these novel materials, there have only been a few reviews published on their mechanical performance in polymer composites. As a result, in this review we have covered some of the key application factors as well as the mechanical properties of CNTs-reinforced polymer composites. Finally, the potential uses of CNTs hybridised with polymer composites reinforced with natural fibres such as kenaf fibre, oil palm empty fruit bunch (OPEFB) fibre, bamboo fibre, and sugar palm fibre have been highlighted.

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Section: Potential Applications Of Cntsmentioning

confidence: 99%

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

et al. 2021

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“…The MWCNTs grown on Co nanoparticles exhibited high sensitivity of 2.1 at 5000 ppm, towards CO 2 gas, with fast response and recovery time as 30.21 s and 49.62 s, respectively, at room temperature, while CNT composite-based film sensors with different concentrations of alumina (Al 2 O 3 ) show excellent changes in conductance when exposed to CO 2 ranging from 50 to 450 ppm. The speed and stability of CNT based sensors are found to be favourable for CO 2 sensing [ 95 , 105 ]. SnO 2 -based CO 2 sensors have attracted favourable attention of the research community for the detection of different gases owing to effective enhancement in sensitivity.…”

Section: Greenhosue Gas Sensorsmentioning

confidence: 99%

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

Gautam¹,

Sharma²,

Tyagi³

et al. 2021

R. Soc. open sci.

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Climate change and global warming have been two massive concerns for the scientific community during the last few decades. Anthropogenic emissions of greenhouse gases (GHGs) have greatly amplified the level of greenhouse gases in the Earth's atmosphere which results in the gradual heating of the atmosphere. The precise measurement and reliable quantification of GHGs emission in the environment are of the utmost priority for the study of climate change. The detection of GHGs such as carbon dioxide, methane, nitrous oxide and ozone is the first and foremost step in finding the solution to manage and reduce the concentration of these gases in the Earth's atmosphere. The nanostructured metal oxide semiconductor (NMOS) based technologies for sensing GHGs emission have been found most reliable and accurate. Owing to their fascinating structural and morphological properties metal oxide semiconductors become an important class of materials for GHGs emission sensing technology. In this review article, the current concentration of GHGs in the Earth's environment, dominant sources of anthropogenic emissions of these gases and consequently their possible impacts on human life have been described briefly. Further, the different available technologies for GHG sensors along with their principle of operation have been largely discussed. The advantages and disadvantages of each sensor technology have also been highlighted. In particular, this article presents a comprehensive study on the development of various NMOS-based GHGs sensors and their performance analysis in order to establish a strong detection technology for the anthropogenic GHGs. In the last, the scope for improved sensitivity, selectivity and response time for these sensors, their future trends and outlook for researchers are suggested in the conclusion of this article.

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“…where R a is the resistance measured for the sensor when exposed to air, and R g is resistance of the sensor when exposed to target gas. A gas sensor for the detection CO 2 was developed employing a multiwall carbon nanotube/Al 2 O 3 composite [73]. The aim of the research was to assemble a sensor capable of monitoring CO 2 concentrations variations in air, since the impact of CO 2 on the global warming is one of the biggest concerns today.…”

Section: Conductivity-based Transductionmentioning

confidence: 99%

High-Tech and Nature-Made Nanocomposites and Their Applications in the Field of Sensors and Biosensors for Gas Detection

et al. 2020

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Gas sensors have been object of increasing attention by the scientific community in recent years. For the development of the sensing element, two major trends seem to have appeared. On one hand, the possibility of creating complex structures at the nanoscale level has given rise to ever more sensitive sensors based on metal oxides and metal–polymer combinations. On the other hand, gas biosensors have started to be developed, thanks to their intrinsic ability to be selective for the target analyte. In this review, we analyze the recent progress in both areas and underline their strength, current problems, and future perspectives.

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Self-standing MWCNTs based gas sensor for detection of environmental limit of CO2

Cited by 37 publications

References 38 publications

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

Nanostructured metal oxide semiconductor-based sensors for greenhouse gas detection: progress and challenges

High-Tech and Nature-Made Nanocomposites and Their Applications in the Field of Sensors and Biosensors for Gas Detection

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