Synthesis of magnetically separable core@shell structured NiFe2O4@TiO2 nanomaterial and its use for photocatalytic hydrogen production by methanol/water splitting

被引：142

作者：

Kim, Hyun Soo ^{[1
]}

Kim, Dongjin ^{[1
]}

Kwak, Byeong Sub ^{[1
]}

Han, Gi Bo ^{[2
]}

Um, Myeong-Heon ^{[3
]}

Kang, Misook ^{[1
]}

机构：

[1] Yeungnam Univ, Dept Chem, Coll Sci, Gyongsan 712749, Gyeongbuk, South Korea

[2] Inst Adv Engn, Plant Engn Ctr, Yongin 449863, Gyeonggi, South Korea

[3] Kongju Natl Univ, Dept Chem Engn, Chungnam 330717, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2014年 / 243卷

基金：

新加坡国家研究基金会;

关键词：

Core@shell structure; NiFe2O4@TiO2; Photocatalysis; Magnetic property; Methanol/water splitting; Hydrogen production; THIN-FILMS; NICKEL FERRITE; BAND-GAP; NANOPARTICLES; ANATASE; TIO2; NI; DECOMPOSITION; NANOCRYSTALS; DEGRADATION;

D O I：

10.1016/j.cej.2013.12.046

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, an attempt was made to modify the magnetic and photocatalytic properties of a semiconductor material to enhance the efficiency of hydrogen production and to enable photocatalyst separation. A core@shell structured NiFe2O4@TiO2 magnetic nanoparticle was prepared and characterized using various analytical tools, and its UV induced photocatalytic activity was assessed. The significant enhancement in photoactivity was attributed to synergism between NiFe2O4 and TiO2, that is, to effective charge transfer from TiO2 to NiFe2O4 and the suppression of electron/hole pair recombination. Hydrogen production from the photo-splitting methanol/water solution was greater than 10 times after 8 h for the core@shell structured NiFe2O4@TiO2 nanocatalyst than for either pure TiO2 or NiFe2O4. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：272 / 279

页数：8

共 38 条

[1] Photoelectrochemical hydrogen production from water/methanol decomposition using Ag/TiO2 nanocomposite thin films [J].

Alenzi, Naser ;

Liao, Wei-Ssu ;

Cremer, Paul S. ;

Sanchez-Torres, Viviana ;

Wood, Thomas K. ;

Ehlig-Economides, Christine ;

Cheng, Zhengdong .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (21) :11768-11775

[2] Preparation of magnetic nanoparticles encapsulated by an ultrathin silica shell via transformation of magnetic Fe-MCM-41 [J].

Arruebo, Manuel ;

Ho, Wing Yan ;

Lam, Koon Fung ;

Chen, Xinqin G. ;

Arbiol, Jordi ;

Santamaria, Jesus ;

Yeung, King Lun .

CHEMISTRY OF MATERIALS, 2008, 20 (02) :486-493

[3]

Chae J, 2009, B KOREAN CHEM SOC, V30, P302

[4] Flow-synthesis of mesoporous silicas and their use in the preparation of magnetic catalysts for Knoevenagel condensation reactions [J].

Chen, Xinqing ;

Arruebo, Manuel ;

Yeung, King Lun .

CATALYSIS TODAY, 2013, 204 :140-147

[5] Synthesis of NiAu colloidal nanocrystals with kinetically tunable properties [J].

Chiang, I-Chen ;

Chen, Yi-Tsang ;

Chen, Dong-Hwang .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 468 (1-2) :237-245

[6] Magnetically separable titania-coated nickel ferrite photocatalyst [J].

Chung, YS ;

Park, SB ;

Kang, DW .

MATERIALS CHEMISTRY AND PHYSICS, 2004, 86 (2-3) :375-381

[7] Efficient indium tin oxide/Cr-doped-TiO2 multilayer thin films for H2 production by photocatalytic water-splitting [J].

Dholam, R. ;

Patel, N. ;

Santini, A. ;

Miotello, A. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (18) :9581-9590

[8] Hydrogen production by photocatalytic water-splitting using Cr- or Fe-doped TiO2 composite thin films photocatalyst [J].

Dholam, R. ;

Patel, N. ;

Adami, M. ;

Miotello, A. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (13) :5337-5346

[9] Physically and chemically synthesized TiO2 composite thin films for hydrogen production by photocatalytic water splitting [J].

Dholam, R. ;

Patel, N. ;

Adami, M. ;

Miotello, A. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (23) :6896-6903

[10] Nanowire structural evolution from Fe3O4 to ε-Fe2O3 [J].

Ding, Yong ;

Morber, Jenny Ruth ;

Snyder, Robert L. ;

Wang, Zhong Lin .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (07) :1172-1178

← 1 2 3 4 →