Effect of Noble Metals (Ag, Au, Pt, Pd) loading over the Semiconducting p-NiO/ n-MoO3 Nanocomposite for Development of Green-House Gas Sensor

In light of the health risks linked with hazardous gases associated with industrial and car exhausts, global awareness of health and the environment is fast expanding. As a result, gas sensors are required to detect such dangerous chemicals, particularly greenhouse gases, in order to maintain the ecological balance. Semiconducting materials with nanostructured architecture have unique and appealing qualities such as high surface-to-volume ratio, high bandgap, small particle size, and so on, which are helpful for building sensitive and selective gas sensors. The design and production of a novel p-n type semiconducting MoO3: NiO nanocomposite functionalized by several noble metals (Ag, Au, Pt, and Pd) are described in this paper, with Pd integrated MoO3: NiO (MNPd) demonstrating superior efficiency compared to CO2 gas. The MoO3: NiO (MN) sensor had an outstanding sensitivity of S=80%, while the Pd-loaded MoO3: NiO (MNPd) sensor had an excellent sensitivity of S=96% and selectivity towards CO2 in comparison to other interfering gases. The findings clearly demonstrate the efficacy of the MNPd nanocomposite designed for a high-performance CO2 gas sensor.

Author (S) Details

G. Sarala Devi

Polymer and Functional Materials Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Habsiguda, Hyderabad – 500007, India. and 2Academy of Scientific and Innovative Research (AcSIR), Ghaziabad – 201002, India.

M. V. Manasa

Polymer and Functional Materials Division, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Habsiguda, Hyderabad – 500007, India. and 2Academy of Scientific and Innovative Research (AcSIR), Ghaziabad – 201002, India.

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