Synthesis and gas-sensing characteristics of x-Fe2O3 hollow balls
http://repository.vnu.edu.vn/handle/VNU_123/58330
Nguyen, D. H., et al. (2016). Synthesis and gas-sensing characteristics of x -Fe2O3 hollow balls. Journal of Science: Advanced Material and Devices, 1, 45 - 50.
The synthesis of porous metal-oxide semiconductors for gas-sensing application is attracting increased interest. In this study, α-Fe2O3 hollow balls were synthesized using an inexpensive, scalable, and template-free hydrothermal method. The gas-sensing characteristics of the semiconductors were sys-tematically investigated. Material characterization by XRD, SEM, HRTEM, and EDS reveals that single-Phase α-Fe2O3 hollow balls with an average diameter of 1.5mm were obtained. The hollow balls were formed by self assembly of α-Fe2O3 nanoparticles with an average diameter of 100 nm. The hollow structure and nanopores between the nanoparticles resulted in the significantly high response of the α-Fe2O3 hollow balls to ethanol at working temperatures ranging from 250℃ to 450℃. The sensor alsoshowed good selectivity over other gases, such as CO and NH3 promising significant application.
Nguyen, D. H., et al. (2016). Synthesis and gas-sensing characteristics of x -Fe2O3 hollow balls. Journal of Science: Advanced Material and Devices, 1, 45 - 50.
The synthesis of porous metal-oxide semiconductors for gas-sensing application is attracting increased interest. In this study, α-Fe2O3 hollow balls were synthesized using an inexpensive, scalable, and template-free hydrothermal method. The gas-sensing characteristics of the semiconductors were sys-tematically investigated. Material characterization by XRD, SEM, HRTEM, and EDS reveals that single-Phase α-Fe2O3 hollow balls with an average diameter of 1.5mm were obtained. The hollow balls were formed by self assembly of α-Fe2O3 nanoparticles with an average diameter of 100 nm. The hollow structure and nanopores between the nanoparticles resulted in the significantly high response of the α-Fe2O3 hollow balls to ethanol at working temperatures ranging from 250℃ to 450℃. The sensor alsoshowed good selectivity over other gases, such as CO and NH3 promising significant application.
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