ゲル-ゾル法

(1)

100 ˚C 24 h

・ Ti(OPr

ⁱ

)

₄

140 ˚C

・形態制御剤

(Amine, Amino Acid)

・ pH 制御剤

・錯形成剤 (N(CH

₂

CH

₂

OH)

₃

)

ゲルゾル

T. Sugimoto, X. Zhou, and A. Muramatsu, J. Colloid Interface Sci., 259, 53 (2003).

K. Kanie and T. Sugimoto, Chem. Commun., 2004, 1584.

“ゲル－ゾル法”

ゲル－ゾル法

“ゲル－ゾル法”

ED

Init pH: 10.5

Succinic Acid Init pH: 10.5

Oleic Acid Init pH: 11.5

Oleic Acid Init pH: 9.9 Glycine

Init pH: 10.5

Gluconic Acid Init pH: 9.5

4-Aminobutylic Acid Init pH: 11.5

none

Init pH: 10.5

Amines

Seeds: 0 mol%

ED: 0.20 M

Seeds: 0.83 mol%

ED: 0.80 M

Seeds: 2.5 mol%

ED: 0.80 M

Seeds: 2.5 mol%

ED: 1.0 M

Seeds: 5.0 mol%

ED: 1.0 M

Seeds: 6.7 mol%

ED: 1.0 M c-axis

ED: Ethylenediamine

Kimijima, Kanie, Muramatsu et al, Chem. Lett., 39, 1080 (2010).

H

₂

O/solvent = 43/57 (v/v)

光触媒活性評価

T. Kimijima, K. Kanie, M. Nakaya, A. Muramatsu, Applied Catalysis B: Environmental, 144, 462-467 (2014).

Materials Transactions, 55, 147-153 (2014); CrystEngComm, 16, 5591-5597 (2014).

0 10 20 30 40 50 60 70 80

T1 T2 T3 T4

0 20 40 80

Pt/TS1 Pt/TS2 Pt/TS3 Pt/TS4 60

0 2 4 6 8 10 12

T1 T2 T3 T4

0 4 8 12

TS1 TS2 TS3 TS4

T. Kimijima, K. Kanie, M. Nakaya, A. Muramatsu, Applied Catalysis B: Environmental, 144, 462-467 (2014).

Materials Transactions, 55, 147-153 (2014); CrystEngComm, 16, 5591-5597 (2014).

K. Kanie, Y. Seino, M. Matsubara, M. Nakaya, A.

Muramatsu, New J. Chem., 38, 3548-3555 (2014).

NaOH = 0-2.0 M, Ba/Zr = 2.0 (mol/mol), [Zr

⁴⁺

] = 0.25 M

4.6 µ m 3.3 µ m 2.2 µ m

5.6 µ m

[Ba

²⁺

] = 0.10-0.50 M, [Zr

⁴⁺

] = 0.050-0.25 M, Ba/Zr = 2.0 (mol/mol)

(a)

K. Kanie et al, Materials Transactions, 48, 2174 (2007); Materials Transactions, 52, 1396 (2011).

1/2 1/4

歪

電圧を加えると歪みが発生

- ＋

力

力を加えると電荷が発生

圧電効果

pH = 7.0 pH = 8.5 pH = 13.0 pH = 14.0

(a) BNT particle and the growth direction. (b) ED pattern of BNT shown in (a). (c) the HRTEM image. (d) EDX profile of the BNT.

液相系における BNTi ナノ粒子直接合成および形態制御

BNT/BKT セラミックスとすることで圧電定数 d₃₃ = 150 pC/N 以上

Nb

⁵⁺

: NbCl

₅

in 0.1 M HCl

Na

⁺

, K

⁺

: 6 M NaOH, 12 M KOH Nb

⁵⁺

Conc.: 0.25 M; 200 ˚C, 3 h

Na および K イオンは粒子内部に均一に分布

K. Kanie, et al, Materials Transactions, 48, 2174 (2007);

Materials Transactions, 52, 1396 (2011); Mater. Trans., 52, 2119 (2011); Jpn. J. Appl. Phys., 50, 09ND09-1 (2011).

Hierarchical Structure

No.

KN-1 KN-2 KN-3

Sintered Temp. (˚C)

1,020 1,040 1,060

Density ρ (g/cm³)

4.05 4.07 3.76

tanδ (%) 8.7 6.8 8.7

d₃₃ (pC/N)

133.4 120.0 83.7

(2)

問題点：低い導電性 (10

^-1

~ 10

⁰

Ω cm)

a

b

a

b

(200) (400)

(400) (200)-

- (020)

(040)

(040) (020)-

-

Chem. Lett., 37, 1278 (2008); Mater. Trans., 50, 2808 (2009);

J. Mater. Chem., 20, 8153 (2010); Chem. Lett., 42, 738 (2013).

IJ ヘッド ITO インク

吐出方向

Ra: 1.1 nm

5.9 x 10

^-3

Ω ･ cm at 500

^o

C

K. Kanie and T. Sugimoto, J. Am. Chem. Soc., 125, 10518 (2003).

COOH

K. Kanie et al., J. Am. Chem. Soc., 134, 808 (2012).

＋

COOH

≡

: C₁₂H₂₅-SH

: HOOC-C₁₅H₃₀-SH

Low High

H

₂

O/L1a (wt/wt) H

₂

O/L2b (wt/wt)

K. Kanie et al., Chem. Commun., 47, 6885 (2011).

K. Kanie and A. Muramatsu, J. Am. Chem. Soc., 127, 11578-11579 (2005).

Fe-MFI Al-MFI (Fe, Al)-MFI