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Synthesis of Mesoporous CuO_x Using Inverse Micelle Sol–gel Process for NO₂ Gas Sensing

Sung Gue Heo, Sangwoo Kim, Seok-Jun Seo, Jae Jin Sim, Jiyeon Shin, Ali Mirzaei, Myung Sik Choi

Korean J. Met. Mater. 2000;62(8):631-638. Published online 2024 Jul 31
DOI: https://doi.org/10.3365/KJMM.2024.62.8.631

Abstract
Nitrogen dioxide (NO₂) is a highly dangerous gas, mostly emitting emitted from fossil fuels, and a major contributor to air pollution. It has negatively effects affects on the human health as well asand contributes to environmental issues like acid rain. In this study, mesoporous CuO_x nanoparticles (NPs) were successfully synthesized..... More

Gadolinium-Doped CeO₂ Gas Sensor for H₂S Sensing

Changhyun Jin, Sangwoo Kim, Dong Eung Kim, Ali Mirzaei, Jong Wook Roh, Sun-Woo Choi, Myung Sik Choi

Korean J. Met. Mater. 2023;61(6):414-421. Published online 2023 May 18
DOI: https://doi.org/10.3365/KJMM.2023.61.6.414

Abstract
Dihydrogen sulfide (H₂S) gas has a flammable nature and is one of the most toxic and dangerous gases. Even small concentrations can be fatal to humans. Herein, we investigated the H₂S gas-sensing features of commercial pristine cerium oxide (CeO₂ ) and gadolinium (Gd)-doped CeO₂ (GDC) nanoparticles. First, the sensing materials..... More

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