Synthesis, Characterization and Gas Sensing Performance of PbMnO3, PbMnO3 : SiO2 and PbMnO3 : Al2O3

Abstract

The present study reports ecofriendly mechanochemical synthesis of PbMnO3, PbMnO3:SiO2 and PbMnO3:Al2O3 composite metal oxides for the first time. The polycrystalline product obtained was analyzed by various physical investigative techniques including FTIR, XRD, SEM, TEM and BET surface area. Screen printed thick films of PbMnO3 and modified PbMnO3 oxides were prepared to check the potential application for gas sensing properties for most toxic, combustible and hazardous gases CO, CO2, H2, Cl2, NH3 and H2S at different operating temperatures ranging from 500C to 400 0C. Among the synthesized sensor PbMnO3:SiO2 shows highest sensitivity (1740) towards NH3 at 50 0C as compared toPbMnO3 (71.42) to NH3 at 200 0C andPbMnO3:Al2O3 (315.8) toH2S at 2500C.This study signifies that sensor was observed to be highly sensitive and selective to NH3 and H2S gas.

Effectiveness of Diethanolamine (DEA) Addition on Band Gap Value of SnO2 by Using Sol-Gel Methods

“…The sample is stored in a desiccator, after cooling the sample is crushed using a mortar and pestle so that the sample can be characterized (Kasuma et al, 2020). UV-DRS functions to determine optical properties (Mugundan et al, 2015) at wavelengths of 200-800 nm (Borhade et al, 2019). The band gap energy and wavelength can be identified from the UV-DRS spectrum (Mugundan et al, 2015).…”

“…Several methods in the synthesis of SnO2 materials, such as magnetron sputtering method (Ning et al, 2009), chemical coprecipitation method (Liu et al, 2012), function theory (Isherwood et al, 2015), hydrothermal method (Borhade et al, 2019) and sol-gel method (Kim et al, 2018). The sol-gel process is the conversion of monomers into colloidal solutions (sols) that serve as precursors for integrated networks (gels) of either discrete particles or network polymers (Ansari et al, 2018).…”

Pengaruh DEA dan Waktu Dipping terhadap Nilai Band Gap Lapisan Tipis CuSnO3

“…Kemudian lapisan tipis dipanaskan pada suhu 100 o C selama 15 menit (Kuriah & Sugihartono, 2018). Lalu, dikalsinasi pada suhu 550 o C selama 2 jam (Kim et al, 2018) λ : Panjang gelombang (nm) (Borhade et al, 2019).…”

Efek Penambahan Diethanolamine dan Suhu Kalsinasi terhadap Energi Gap Lapisan Tipis CuSnO3

“…Dalam CuSnO3, terdapat ikatan Cu-O dan Sn-O ketika diuji menggunakan FTIR. Borhade, dkk., menemukan bahwa CuSnO3 memiliki struktur kristal kubik di alam dan memiliki band gap 3,1625 eV ketika disintesis menggunakan metode hidrotermal (Borhade et al, 2019). Dalam penelitian lain, CuSnO3 ditemukan mengalami perubahan warna ketika dikalsinasi dalam suhu yang berbeda saat disintesis menggunakan metode sol-gel spin coating.…”

“…Sintesis Copper stannate (CuSnO3) ini telah dilakukan dengan berbagai prekursor di antaranya, SnCl4.5H2O dan Cu(NO3)2.3H2O (Kim, et al, 2018) (Liu, Du, & Kong, 2012), CuO dan SnO2 (Ning, et al, 2009), serta CuCl2 dan SnCl4 (Borhade, Tope, & Sangle, 2019).…”