Facile Ion-Exchange Synthesis and Visible Light Photocatalytic Studies of Cu2+, Sn2+, and Ag+-Substituted LiMg0.5Ti0.5O2

被引：25

作者：

Veldurthi, Naveen Kumar ^{[1
]}

Ravi, Gundeboina ^{[1
]}

Reddy, Jitta Raju ^{[1
]}

Palla, Suresh ^{[1
]}

Muniratnam, Nagegownivari R. ^{[2
]}

Prasad, Guduru ^{[3
]}

Vithal, Muga ^{[1
]}

机构：

[1] Osmania Univ, Dept Chem, Hyderabad 500007, Andhra Pradesh, India

[2] Ctr Mat Elect Technol, Hyderabad 500051, Andhra Pradesh, India

[3] Osmania Univ, Dept Phys, Hyderabad 500007, Andhra Pradesh, India

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2014年 / 97卷 / 06期

关键词：

ELECTRONIC-STRUCTURE; CATHODE MATERIAL; METHYLENE-BLUE; ROCK-SALT; X-RAY; LINI0.5MN0.5O2; DEGRADATION; BEHAVIOR; OXIDES;

D O I：

10.1111/jace.12826

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel series of visible light-sensitive Cu2+, Sn2+, and Ag+-substituted LiMg0.5Ti0.5O2 photocatalysts were synthesized by a facile ion-exchange method and characterized by XRD, UV-Vis diffuse reflectance spectra, scanning electron microscopy equipped with an X-ray energy-dispersive spectroscopy, Brunauer-Emmett-Teller surface area, inductively coupled plasma mass spectrometry, and thermal gravimetric analysis. The characterization results showed that morphology, crystallite size, and surface areas of the ion-exchange products were almost similar to the parent compound. Absorption edges of Ag+-doped (AMT), Cu2+-doped (CMT), and Sn2+-doped (SMT) samples were red shifted remarkably into the visible light region while parent LiMg0.5Ti0.5O2 (LMT) was UV active. Photocatalytic activity of these samples was evaluated by studying the degradation of methylene blue and nitro benzene under visible light irradiation and the stability of all samples during photocatalytic experiment was also investigated. The activity of all photocatalysts was ranked accordingly as SMT AMT > CMT > LMT. The correlation between photocatalytic properties, band gap energy, rate of recombination of the charge carriers, and amount of .OH radicals generated during photocatalysis and the underlying reasons were discussed.

引用

页码：1829 / 1836

页数：8

共 39 条

[11] Valence and spin states in delafossite AgNiO2 and the frustrated Jahn-Teller system ANiO2 (A=Li,Na) [J].

Kang, J. -S. ;

Lee, S. S. ;

Kim, G. ;

Lee, H. J. ;

Song, H. K. ;

Shin, Y. J. ;

Han, S. W. ;

Hwang, C. ;

Jung, M. C. ;

Shin, H. J. ;

Kim, B. H. ;

Kwon, S. K. ;

Min, B. I. .

PHYSICAL REVIEW B, 2007, 76 (19)

[12] Synthesis and electrochemical properties of layered Li0.9Ni0.45Ti0.55O2 [J].

Kang, K ;

Carlier, D ;

John, J ;

Arroyo, EM ;

Ceder, G ;

Croguennec, L ;

Delmas, C .

CHEMISTRY OF MATERIALS, 2003, 15 (23) :4503-4507

[13] Dependence of property, cathode characteristics, thermodynamic stability, and average and local structures on heat-treatment condition for LiNi0.5Mn0.5O2 as a cathode active material for Li-ion battery [J].

Kitamura, Naoto ;

Hasegawa, Takuya ;

Uchimoto, Yoshiharu ;

Amezawa, Koji ;

Idemoto, Yasushi .

ELECTROCHIMICA ACTA, 2011, 56 (25) :9453-9458

[14] Synthesis, Characterization, Electronic Structure, and Photocatalytic Behavior of CuGaO2 and CuGa1-xFexO2 (x=0.05, 0.10, 0.15, 0.20) Delafossites [J].

Lekse, Jonathan W. ;

Underwood, M. Kylee ;

Lewis, James P. ;

Matranga, Christopher .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (02) :1865-1872

[15] Synthesis of nanoarchitectured LiNi0.5Mn0.5O2 spheres for high-performance rechargeable lithium-ion batteries via an in situ conversion route [J].

Liu, Yumin ;

Chen, Bolei ;

Cao, Feng ;

Zhao, Xingzhong ;

Yuan, Jikang .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (28) :10437-10441

[16] Solution combustion synthesis of layered LiNi0.5Mn0.5O2 and its characterization as cathode material for lithium-ion cells [J].

Manikandan, P. ;

Ananth, M. V. ;

Kumar, T. Prem ;

Raju, M. ;

Periasamy, P. ;

Manimaran, K. .

JOURNAL OF POWER SOURCES, 2011, 196 (23) :10148-10155

[17] Enhanced photocatalytic hydrogen generation from barium tantalate composites [J].

Marschall, Roland ;

Soldat, Julia ;

Wark, Michael .

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2013, 12 (04) :671-677

[18] Visible light sensitive photocatalyst, delafossite structured α-AgGaO2 [J].

Maruyama, Yoshihiko ;

Irie, Hiroshi ;

Hashimoto, Kazuhito .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (46) :23274-23278

[19] Silver delafossite nitride, AgTaN2? [J].

Miura, Akira ;

Lowe, Michael ;

Leonard, Brian M. ;

Subban, Chinmayee V. ;

Masubuchi, Yuji ;

Kikkawa, Shinichi ;

Dronskowski, Richard ;

Hennig, Richard G. ;

Abruna, Hector D. ;

DiSalvo, Francis J. .

JOURNAL OF SOLID STATE CHEMISTRY, 2011, 184 (01) :7-11

[20] Synthesis of LiNi0.5Mn0.5-xTixO2 by an emulsion drying method and effect of Ti on structure and electrochemical properties [J].

Myung, ST ;

Komaba, S ;

Hosoya, K ;

Hirosaki, N ;

Miura, Y ;

Kumagai, N .

CHEMISTRY OF MATERIALS, 2005, 17 (09) :2427-2435

← 1 2 3 4 →