เอกสารการประชุมวิชาการและเสนอผลงานวิจัย มหาวิทยาลัยทักษิณ ครั้งที่ 19 2552 - page 1386

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¢d ¨r¤µŠÅššµÁœ¸ ¥¤Å—°°„ÅŽ—r (TiO2) Áž} œ¢d¨r¤µŠœ·—®œ¹ÉŠš¸É„ε¨´ŠÅ—o¦´‡ªµ¤œÄ‹°¥nµŠ„ªoµŠ ªµŠÄœ
„µ¦«¹ „¬µª·‹´¥Äœž{‹‹» ´œ ÁœºÉ°Š‹µ„¤¸ ¤´˜·œn µœÄ‹®¨µ¥ž¦³„µ¦ Ánœ ¤¸‡nµ„µ¦n ŠŸnµœÂŠ¼ŠÄœn ªŠš¸É˜µ¤°ŠÁ®Èœ
šœ„µ¦„´ —„¦n°œ °Šµ¦Á‡¤¸ °»–®£¼¤· ¼Š ¨³„µ¦ ´—¸Å—o —¸ (Ritter, 1975 ; Pulker, 1984) ¤¸‡nµ—´œ¸®´ „Á®¼Š
(n = 2.55 Î µ®¦´ °œµÁšÂ¨³ n = 2.7 Î µ®¦´¦¼Åš¨r) Áž}œµ¦„¹É Š˜´ªœÎµš¸É¤¸Â™¡¨´ ŠŠµœ„ªoµŠ (3.18 eV) 宦´
°œµÁšÂ¨³ 3.03 eV 宦´¦¼ Ś¨r) (Li et al., 2000) šÎ µÄ®o¤¸„µ¦œÎµÅžž¦³¥» „˜rčoĜ®¨µ¥—oµœÁn œ čoÁž}œ˜´ªÁ¦nŠ
ž’· „·¦·¥µ (catalysis), â؇³˜³Å¨˜· „ (photocatalytic) ¦ª¤™¹ŠÄo Áž}œnªœž¦³„° °ŠÁŽ¨¨r »¦·¥³ (solar cell)
(Kim et al., 1990; Babelon et al., 1998)
ŚšµÁœ¸ ¥¤Å—°°„ÅŽ—rĜ›¦¦¤µ˜·¤¸ 3 Á¢‡º° °œµÁš (anatase) ¦¼Åš¨r (rutile) ¨³¦¼Å„šr (brookite)
×¥Á¢°œµÁšÂ¨³Á¢¦¼ Ś¨r‹³¤¸Ã‡¦Š¦oµŠŸ¨¹„Áž}œÂÁšš¦³Ã„œ´ ¨ (tetragonal) nªœÁ¢¦¼ ńšr¤¸Ã‡¦Š¦oµŠ
Ÿ¨¹„°°š¦°¦°¤·„ (orthorhombic) ž„˜· ‹³Å¤n¡Á¢¦¼ ńšr‹³¡Á¡¸ ¥Š °œµÁš ¦¼ Ś¨r¨³°´–“µœ
(amorphous) Ášn µœ´Êœ (Löbl et al., 1994) „µ¦Á˜¦¸¥¤¢d ¨r¤ÅššµÁœ¸¥¤Å—°°„ÅŽ—r µ¤µ¦™Á˜¦¸ ¥¤Å—o®¨µ¥ª·›¸ š´ÊŠ‹µ„
„¦³ªœ„µ¦šµŠ¢d · „r (physical vapor deposition) Ánœ ª·›¸ ¦³Á®¥µ¦ (evaporation), °µ¦rÁ°¢ ž{˜Á˜°¦·Š
(RF sputtering), —¸Ž¸ ž{ ˜Á˜°¦·Š (DC sputtering) ¨³ „¦³ªœ„µ¦šµŠÁ‡¤¸ (chemical vapor deposition) ®¦º°
ª·›¸ ΨÁ‹¨ (sol gel) Áž}œ˜oœ °¥nµŠÅ¦„È—¸„µ¦Á˜¦¸¥¤¢d ¨r¤µŠ—o ª¥Áš‡œ·‡ž{˜Á˜°¦· Š ¤¸o°Å—oÁž¦¸¥š¸É µ¤µ¦™‡ª‡»¤
°´˜¦µÁ‡¨º° ¨³¤´ ˜·°Š¢d¨r¤µŠÅ—o Šn µ¥ (Zhao et al., 2005) ¢d¨r¤š¸É ŗo‹¹Š¤¸‡»–£µ¡Â¨³¤¸„µ¦¥¹—Á„µ³—¸
(Wu et al., 2006) š´ÊŠ¥´Šµ¤µ¦™ž¦³¥»„˜r޼n„µ¦Á‡¨º°·ÊœŠµœ œµ—Ä®nĜ¦³—´°»˜µ®„¦¦¤Å—oŠnµ¥°¸„—o ª¥
ŚšµÁœ¸¥¤Å—°°„ÅŽ—r¤¸ ¤´ ˜·š¸É ε‡´°¥nµŠ®œ¹ÉŠ ‡º° ¤´ ˜·Å±Ã—¦¢d¨·„ Ž¹ÉŠ¢¼‹··¤µÂ¨³±°œ—µ Áž}œœ´„ª· ‹´¥
„¨»n¤Â¦„š¸É‡oœ¡¤´˜·œ¸Ê (Fujishima and Honda, 1972) ˜n °¤µ¢¼‹··¤µÂ¨³‡–³ ¡ž¦µ„’„µ¦–r â؇³˜³Å¨˜·„
Á˜°¦· ŦÁŽ´Éœ (photocatalytic sterilization) ¨³Å±Ã—¦¢d¨·„¥·ÉŠ¥ª— (super-hydrophilic) °ŠÅššµÁœ¸ ¥¤Å—°°„ÅŽ—r
Á¤ºÉ °´¤Ÿ´ Š (Fujishima et al., 2000) šÎµÄ®o¤¸„µ¦ª·‹´¥Â¨³¡´•œµÁ¡ºÉ°ž¦³¥»„˜rčoŚšµÁœ¸¥¤Å—°°„ÅŽ—rĜ—o µœ
˜nµŠÇ °¥nµŠ„ªoµŠ ªµŠÃ—¥ÁŒ¡µ³°¥n µŠ¥·ÉŠ „¦³‹„šÎµ‡ªµ¤³°µ—˜´ªÁ°Š (self-cleaning glass)
„¦³‹„šÎµ‡ªµ¤³°µ—˜´ªÁ°Š Áž}œ„¦³‹„š¸É šÎµ‡ªµ¤³°µ—Å—oŠn µ¥‹œÁ„º°Å¤n˜o°ŠšÎµ‡ªµ¤³°µ—„¦³‹„Á¨¥
®¨´ „„µ¦šÎµŠµœ °Š„¦³‹„œ·—œ¸Ê°›·µ¥Å—o —´Šœ¸Ê Á¤ºÉ°Ÿ·ª®œo µ °Š„¦³‹„´¤Ÿ´ Š°µš·˜¥r ¦´Š¸°´¨˜¦µÅªÃ°Á¨˜
°ŠÂŠ°µš·˜¥r ‹³„¦³˜»oœÄ®oäÁ¨„» ¨ °ŠœÊεš¸É°¥¼n¦°„¦³‹„Á„·—ž’· „·¦·¥µ„¨µ¥Áž}œ®¤¼nű—¦°„Ž·¨ (hydroxyl, OH-)
Ž¹É ŠÁž}œ˜´ ª°°„Ž·Å—Žr µ¦°·œš¦¸¥rš¸É—¸ šÎ µÄ®oäÁ¨„»¨ °Š·ÉŠ„ž¦„š¸É Á„µ³œŸ·ª„¦³‹„˜„˜´ ªÁž}œÃ¤Á¨„»¨Á¨È„¨³
¦³Á®¥®¨» —‹µ„Ÿ·ª„¦³‹„ –³Á—¸¥ª„´ œ„È ‹³ž¦´¤´ ˜·Á· ŠŸ·ª °Š„¦³‹„Ä®o ¤¸ £µ¡°œÊÎ µ ®¦º°Å±Ã—¦¢d ¨·„
Á¤ºÉ °ÄoœÊÎ µŒ¸—®¦º°¦µ—Åžœ„¦³‹„ œÊε‹³Å¤n‹´˜´ªÁž}œ®¥—˜n‹³¤¸¨´„¬–³Áž}œ´Ê œ °ŠœÊ坵ŠÇ Îµ¦³·ÉŠ„ž¦„œ
Ÿ·ª®œoµ„¦³‹„Ä®oÅ®¨¨Š¤µ—oª¥Â¦ŠÃœo ¤™nªŠÃ¨„
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¤„œ¸ ˜¦°œ ž{˜Á˜°¦·Š (reactive DC magnetron sputtering ) ×¥Áœoœ„µ¦«¹ „¬µ™¹ŠŸ¨ °Š‡ªµ¤—´œ¦ª¤ –³Á‡¨º°
š¸É ¤¸˜n°Ã‡¦Š¦oµŠŸ¨¹„ ¨´„¬–³¡ºÊœŸ· ª ¨³¤´˜·Ã¢Ã˜‡³˜³Å¨˜·„ °Š¢d¨r¤µŠÅššµÁœ¸¥¤Å—°°„ÅŽ—rš¸É Á‡¨º°Å—o
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