Photon Factory Activity Report 2018 #36 (2019)

BL-12C, AR-NW10A/2018G078

LaFe 2jFTJS= NaTaO gú$8D<Aí~xlgûÅ
X-Ray Absorption of NaTaO Photocatalysts Co-Doped with La and Fe Cations
33Sudrajat Hanggara , U`Z , õÁß¥ÑÜãà, 657-8501 ß¥ÊsiÕzÖuñÜãĐ, 263-8522 uñâ¼sÒÖHanggara SUDRAJAT , Nobuyuki ICHIKUNI and Hiroshi ONISHI
School of Science, Kobe University, Rokko-dai, Nada, Kobe, 657-8501, Japan
School of Engineering, Chiba University, Yayoi-machi, Inage, Chiba, 263-8522, Japan
121,*12121,*1

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H4QS=2¬/>58SA2b ö/BSBRċGEQ6O(NaTaO : NTO)# Sr , La "!
$č:C9S2FTJS=/ ¾éÒ£ąĖĀØ#}VěČpÏ 50%2ÿ/ĘÂ¡×Ð/Û-0/[1]U¯FTJS=
:C9S%MAEë²# WèÍ.ě
oþĒ º$kë{2dć/¢/¤% 2016G057 üĕ# Sr 2FTJS= NaTaO gú$ Sr K-edge XAFS 2Åùµě[$ Sr–O ?7Ręë{Ď 0.20 0.26 nmĚ jB >5EęTa î«Ě A/ ÷Sr>5EęNa î«Ě2w³Ò SrO hēa
SrO ä¯hēa#00[2]
´üĕę2018G078Ěm¹#%ěvf 3d
åPR FT JS=  ā ĉ2 * Fe 2ě La
NaTaO gú$¦·Ć28D<Aí~xlg#,ùµ3 c$Ċáč:C9S La $jF
TJS= NaTaO gú#yøgæ¡2]X/Û-0/[3]FTJS=:C9S$
w³>5E2¿yøgæ¡$þÆ2©/Ù¸/

3 La K-edge $Åë¶
La Fe 2jFTK NaTaO gú$ La K-edge$ k (k)~xAL<ER qlď­2 Fig. 1ęAĚęBĚ#ÝjFTJS=É2 4+4 mol% 20+20 mol%) +* EXAFS ¨q$Î#
r%÷-0" La $¦·Ć%$Éçr"1 /)ějFTJS=gú (a-c)$ EXAFS ¨q% 3–9 Å $Ĕ LaFeO|2 ėNa CO , Ta O , La O ,& Fe O $Ã{Í24RNG/(Y½YË£/ÚÀgú2ýôLa+Fe $FTKÉ2 NaTaO # 1+1, 2+2,4+4, 20+20 mol% Fe K-edge
La L -edge
XAFS 2 PF BL-12C ěLa K-edge XAFS 2 PF AR
NW10A ½YÄÅFTJS=eé$É#ĄĈÀ)% 19 é SSD 2ÓógÀÅ Demeter 2Óùµ

32+33+3+3

33+-1

33+2+32+5++6123+3+3



Fig. 1. (A) k -weighted La K-edge EXAFS oscillations and(B) FT of (A); a: LaFe-NTO (4+4), b: LaFe-NTO (8+8), c:LaFe-NTO (20+20), d: LaFeO , e: La O .
33233+323252323334 Fe K-edge $Åë¶Fe K-edge $ k (k)AL<ER qlď­*FTJS=É#1-|UÎęFig.
2ĚU¯ěFe K-edge $ XANES %FTJS=É2V/*# LaFeO $AL<ER#ÈăęFig. 3Ě^V$ EXAFS ,& XANES $Åë¶#* Fe 2jFTK NaTaOěÚ{£À Lagú% LaFeO -NaTaO Ça2£/ ª /
33+

33+33

Photon Factory Activity Report 2018 #36 (2019)

Research Conference on Chemical Reactions atSurfaces, Instructive Surfaces: From Guiding
Chemical Reactions to Controlling Protein Adhesion,
2019 ] 2 l.
4. Onishi,
H.,
Atom-ScaleandNano-Scale
Architectures of NaTaO Photocatalysts Doped with
Guest Metal Cations (d_x), Gordon Research
Conference on Chemical Reactions at Surfaces,
Instructive Surfaces: From Guiding ChemicalReactions to Controlling Protein Adhesion, 2019 ]2 l.
5. Su, NaTaO <U6\<Ja¦ v` £¤d_x¥, F
SX\X!)¢PC^7¦; w
Xph~e, 2019 ] 1 l.
6. Su, NaTaO <U6\<Ja¦ v` £¤d_x¥, joSX\Xx7, 2018 ] 12 l.
7. Su, NaTaO <Us<B¦[%2(0  V-tW>JbA¤d_x¥, qESXx7, 2018 ] 10 l.
8. Sudrajat, H.; Sasaki, T.; Ichikuni, N.; Onishi, H.,
Double Doping of NaTaO Photocatalyst with La andFe for Visible Light Sensitization,  122 MU
7, 2018 ] 9 l.
9. 3O85; Sudrajat, H.; 9ncm; Su, La Fe %2*NaTaO <U%2*!$ ,  21 M XAFS 7, 2018 ] 9l.
10. Sudrajat, H.; Zhou, Y.; Sasaki, T.; Ichikuni, N.;
Onishi, H., Unravelling Structural Properties ofNaTaO -LaCrO Solid Solution Photocatalysts, 8thTokyo Conference on Advanced Catalytic Scienceand Technology (TOCAT8), 2018 ] 8 l.
11. Onishi, H.,Atom-Scale and Nano-Scale ArchitectureofNaTaO3
Photocatalysts
forArtificial
Photosynthesis ¤ d _  x ¥ , IUVSTA-86ASEVA-28 Workshop, Nanoscale Oxides Systems inPhysics and Chemistry, 2018 ] 7 l.
12. Onishi,
H.,
Atom-ScaleandNano-Scale
Architectures of Metal-Doped NaTaO Photocatalysts
for Artificial Photosynthesis ¤d_x¥, Seminarin Karlsruhe Institute of Technology, 2018 ] 6 l.
13. Su, jo¡X7 23 MX7[DyGk¡HV.+-Z U:| '&2019 ] 5 l.
3Fig. 2. (A) k -weighted Fe K-edge EXAFS oscillations and(B) FT of (A); a: LaFe-NTO (4+4), b: LaFe-NTO (8+8), c:LaFe-NTO (20+20), d: LaFeO .
3333333Fig. 3. Fe K-edge XANES for LaFe-NTO photocatalysts
and LaFeO .
3oXQ¤A¥16H022501N
=K^D¤B¥18KK01611z@LTB
18F18029 Yi4Ig{[1] A. Kudo and H. Kato, Chem. Phys. Lett. 331, 373(2000).
[2] L. An, T. Sasaki, P. Weidler, C. Wöll, N. Ichikuni, H.
Onishi, ACS Catal. 8, 880 (2018).
[3] P. Kanhere, J. Nisar, Y. Tang, B. Pathak, R. Ahuja, J.
Zheng, Z. Chen, J. Phys. Chem. C 116, 116 (2012).
ar1. Su, NaTaO <U6\<Ja¦ v` £¤d_x¥, }¡?VRf7/2",#*, 2019 ] 7 l.
2. Sudrajat, H.; Sasaki, T.; Ichikuni, N.; Onishi, H.,
Enhancing the Population of Photoexcited Electronsin NaTaO Via Codoping with Lanthanum andManganese,  123 MU7, 2019 ] 3 l.
3. Sudrajat, H.; Dhakal, D.; Sasaki, T.; Ozawa, A.;
Babel, S.; Yoshida, T.; Ichikuni, N.; Onishi, H.,
Electron Population and Hydrogen Evolution Rate
Controlled by Concentration Gradient of Strontium
Cations Doped in KTaO Photocatalysts, Gordon
333333* oni@kobe-u.ac.jp