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Theoretical Investigation for the Adsorption of Atmospheric Harmful Gases on the Germanene Sheet

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¼­ÇöÀÏ, ±èµ¿Çö, ¹é¼öÁø, ½Åâȣ, ±è½ÂÁØ,
¼Ò¼Ó »ó¼¼Á¤º¸
¼­ÇöÀÏ ( Seo Hyun-Il ) - Hannam University Department of Chemistry
±èµ¿Çö ( Kim Dong-Hyun ) - Hannam University Department of Chemistry
¹é¼öÁø ( Baek Soo-Jin ) - Hannam University Department of Chemistry
½Åâȣ ( Shin Chang-Ho ) - KT&G Central Research Institute
±è½ÂÁØ ( Kim Seung-Joon ) - Hannam University Department of Chemistry

Abstract

º» ¿¬±¸´Â ±×·¡Çɰú À¯»çÇÑ IVÁ· ³ª³ë ½ÃÆ®·Î¼­ ¸»´ÜÀ» ¼ö¼Ò·Î ó¸®ÇÑ °Ô¸£¸¶´Ñ(Germanene) ÀÌÂ÷¿ø(2D) ½ÃÆ®¿¡ ¿©·¯ À¯ ÇØ °¡½º(COx, NOx, SOx)¸¦ ÈíÂø½ÃÄ×À» ¶§ ±¸Á¶Àû º¯È­¿Í ÈíÂø¿¡³ÊÁö¸¦ ÀÌ·ÐÀûÀ¸·Î °è»êÇÏ¿´´Ù. ÀÌ·Ð ¹æ¹ýÀº ¹Ðµµ ¹üÇÔ¼ö ÀÌ·Ð (density functional theory, DFT) °¡¿îµ¥ B3LYP¿Í CAM-B3lYPÀ» »ç¿ëÇÏ¿´À¸¸ç, ¹ÙÅÁÁýÇÕ(basis set)À¸·Î´Â cc-pvDZ¸¦ »ç¿ëÇÏ¿´´Ù. ºÐ ÀÚ ±¸Á¶¸¦ °¢ ÀÌ·Ð ¼öÁØ¿¡¼­ ÃÖÀûÈ­ÇÑ ÈÄ Áøµ¿ Á֯ļö¸¦ °è»êÇÏ¿© ¿­¿ªÇÐÀûÀ¸·Î °¡Àå ¾ÈÁ¤ÇÑ ºÐÀÚ ±¸Á¶¸¦ È®ÀÎÇÏ¿´´Ù. °Ô¸£¸¶´Ñ ½ÃÆ®¿¡ ±âüÀÇ ÈíÂøÀº CO, CO2, NO, SO2 °¡½ºÀÇ °æ¿ì ¹°¸® ÈíÂøÀ» ³ªÅ¸³»¾úÀ¸¸ç, NO2, SO, SO2 µîÀº È­ÇÐ ÈíÂøÀ» ³ªÅ¸³»¾ú´Ù.

The adsorption of various atmospheric harmful gases (COx, NOx, SOx) on graphene-like Germanene 2D sheet was theoretically investigated using density functional theory(DFT) method. The structures were fully optimized at the B3LYP/cc-pvDZ and CAM-B3LYP/cc-pvDZ levels of theory and confirmed to be a local minimum by the calculation of the harmonic vibrational frequencies. The adsorptions of gases on the Germanene sheet were predicted to be a physisorption process for CO, CO2, NO, and SO2 gases but to be a chemisorption process for NO2, SO, and SO2 gases.

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°Ô¸£¸¶´Ñ ½ÃÆ®; ¹Ðµµ¹üÇÔ¼öÀÌ·Ð; ´ë±âÀ¯Çذ¡½º(COx, NOx, SOx)
Germanene sheet; DFT; Atmospheric harmful gases (COx, NOx, SOx)

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