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Table 1

Lattice system of nanosheet and its precursor

Precursor (3D)
Cubic

Nanosheet (2D)
SquareP

RectangularP, F

Triclinic

ObliqueP

Hexagonal

HexagonalP

Tetragonal
Orthorhombic
Monoclinic

Fig. 2Synchrotron radiated X­ray in­plane diraction measure­ment, (a), and polarization dependent XAFS measure­ments, (b) p­polarization and (c) s­polarization.

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ÈãÌS½Ëðpµ½úËõ X üÉæé\¢ðÍ@ÌJ­ÉæÁÄC±êÜÅ\¢És¾È_ª½©Á½_»}KimV[gÌiðO³I\¢Ì_©çðß
ðÂ\Éµ½B±±ÅCÅà\¢ªPÈ_»}KimV[gðÀáÆµÄp¢½ªCæè¡GÈ\¢ðL·é_»`^imV[gÉ¨¢Äà¯lÉ¸xÇ­O³\¢ðè·é±ÆÉà¬÷µÄ¢é3,4) BÁ¦ÄCíXÌ
£imV[gÌñ³üú\¢ðÀÛÉðÍµ½oÜ©
çC£OÌoN»Ì»nÆ£ãÌimV[gÌñ³ux[iqÌÖWÉÂ¢Ä Table 1 ÌÊèÜÆßéFig. 3(a) Geometric relationship between the incident beam andthe MnO2 nanosheet. (b) Structure illustration for thenanosheet projected onto the [010] plane. Blue and red cir­cles represent Mn and O atoms, respectively. (c) Synchro­tron radiated X­ray in­plane diraction pattern and (d)Fourier transforms of k3 weighted Mn K­edge EXAFS spec­
tra2,4) of the nanosheet monolayer.

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Ó`ðLµÄ¢éB±êÉæèimV[gÌ\¢ÉÅ_ð3b Ì\¢fÉ¦·æ¤É Mn_Mn Æ Mn_O ÌoûªÄÄCVµ¢@\«ðTõ·é±ÆªÂ\ÆÈÁ½BêEXAFS U®Éñ^·éÌÉÎµÄCp ÎõÅÍ Mn_MnáÆµÄCäXª©oµ½V[gàÉK¥IÈI[v`ÝìpÍÎõxNgÌ@üÉ½é½ß EXAFS UlðL·éimV[gÅéuimbVv5,6)ð

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éB»±ÅCæÉU®¬ªÌ­ñÜªèÉæéðÍÊð¦µ½B±±ÅêÌwó_»È¢ p Îõ EXAFS U®ððÍµC»Ìp[^[ð^^ÅÍCzXgwàÉ Rb{ ª¶ÝµÄ¢éB±p¢Ä s Îõ EXAFS U®ððÍ·é±ÆÅC¸xÇ­iÌ Rb{ ð£HöÅ H{ Öu··é±ÆÅI[v`

106  úËõ March 2011 Vol.24 No.2

Ì in­planeFig. 4Two­dimensional structure analysis of TaO3 nanomesh: (a)integrated intensity of observed in­plane diractions and (b)calculated intensity5).

Fig. 5In­plane XRD patterns for a monolayer lm of titania
nanosheets before (solid line) and after (dotted line) UV ir­
radiation7).

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Fig. 6(a) In­plane diraction pattern of titania nanosheet
monolayer before and after heating and (b) unusual crystal­
lization behaviors of anatase nanocrystallites from the tita­
nia nanosheet and its stacked forms10).

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