Fabrication of enhanced sensitive and selective porous indium oxide nanocube sensor for NO2 detection
| Autor: | Sawanta S. Mali, Y. H. Navale, Krishna K. Pawar, Kiran Kumar K. Sharma, Pramod S. Patil, Vikas B. Patil, Chang Kook Hong |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Fabrication Materials science Kirkendall effect Process Chemistry and Technology Nucleation Oxide chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Materials Chemistry Ceramics and Composites 0210 nano-technology Selectivity Porosity Nanoscopic scale Indium |
| Zdroj: | Ceramics International. 47:2430-2440 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2020.09.085 |
| Popis: | Porous nanoarchitectures of metal oxide semiconductors (MOS) are promising advanced materials due to their relatively higher surface area, more active sites and are beneficial for variety of applications. Herein, we report a simple method for making porous Indium oxide nanocubes (PINC) using a novel surfactant based biogenic hydrothermal method followed by a nanoscale Kirkendall effect. The nucleation and growth of PINCs were optimized by controlling amount of Cetyl Trimethylammonium Bromide (CTAB), which helps to control the size of nanocubes. The formation of porosity on the nanocubes through the nanoscale Kirkendall effect was proposed. Furthermore, the PINC based films were employed to fabricate solid-state chemiresistive gas sensor and sensing properties were studied. The PINC based film sensor was found to respond towards Carbon dioxide (CO2), Acetone ((CH3)2CO), Ammonia (NH3), and Nitrogen dioxide (NO2) gases. However, It exhibited highest gas response to NO2 gas (response S = 3450) with a shorter response (Rs = 14s) and recovery time (Rc = 115s) at 100 °C operating temperature. Besides, the sensing properties such as linearity, selectivity and real-time sensing analysis were also studied systematically. Herein, we demonstrated the effect of porosity and size of nanocubes on the sensing properties of PINC based sensor device. |
| Databáze: | OpenAIRE |
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