Electrodeposition of maghemite (γ-Fe2O3) nanoparticles

被引：68

作者：

Park, Hosik ^{[1
,2
]}

Ayala, Perla ^{[1
]}

Deshusses, Marc A. ^{[1
]}

Mulchandani, Ashok ^{[1
]}

Choi, Heechul ^{[2
]}

Myung, Nosang V. ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Environm Chem & Engn, Riverside, CA 92521 USA

[2] Gwangju Inst Sci & Technol, Dept Environm Sci & Engn, Kwangju 500712, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2008年 / 139卷 / 01期

关键词：

electrodeposition; maghemite; nanoparticles; environmental remediation; As(V); adsorption;

D O I：

10.1016/j.cej.2007.10.025

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Crystalline maghemite (gamma-Fe2O3) nanoparticles were cathodically electrodeposited at room temperature from environmentally benign electrolytes. The shape, size, and production rate of nanoparticles were strongly influenced by electrochemical conditions (e.g. FeCl3 concentration, current density). X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis indicated that randomly oriented polycrystalline maghemite nanoparticles were synthesized with the (3 1 1) and (4 4 0) peaks as the main diffraction peaks. Transmission electron microscopy (TEM) images revealed that average particle size decreased from approximately 23 to 7 nm with increased current density. Magnetic saturation (M-S) of maghemite nanoparticles was determined to be 66 emu g(-1) (66 Am-2 kg(-1)) at 300 K. The present maghemite nanoparticles showed a greater As(V) adsorption compared to iron nanoparticles, which might be attributed to a higher specific surface area. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：208 / 212

页数：5

共 50 条

[1] Surface effects in nanoparticles:: application to maghemite γ-Fe2O3
Kachkachi, H
Ezzir, A
Noguès, M
Tronc, E
[J]. EUROPEAN PHYSICAL JOURNAL B, 2000, 14 (04): : 681 - 689
[2] The synthesis of maghemite and hematite (γ-Fe2O3, α-Fe2O3) nanospheres
Dar, M. A.
Ansari, S. G.
Wahab, R.
Kim, Young-Soon
Shin, Hyung-Shik
[J]. PROGRESS IN POWDER METALLURGY, PTS 1 AND 2, 2007, 534-536 : 157 - +
[3] Synthesis and surfactant size regulation of nanoparticles of maghemite (γ-Fe2O3)
Rather, Mushtaq Ahmad
[J]. EMERGING TRENDS IN ENGINEERING, SCIENCE AND TECHNOLOGY FOR SOCIETY, ENERGY AND ENVIRONMENT, 2018, : 657 - 661
[4] Electrodeposition of Fe2O3 Nanoparticles and Its Supercapacitive Properties
Kadam, S. L.
Padwal, P. M.
Mane, S. M.
Kulkarni, S. B.
[J]. 2ND INTERNATIONAL CONFERENCE ON EMERGING TECHNOLOGIES: MICRO TO NANO 2015 (ETMN-2015), 2016, 1724
[5] Synthesis of maghemite (γ-Fe2O3) nanoparticles by thermal-decomposition of magnetite (Fe3O4) nanoparticles
Aliahmad, M.
Moghaddam, N. Nasiri
[J]. MATERIALS SCIENCE-POLAND, 2013, 31 (02): : 264 - 268
[6] Integrated assessment of toxic effects of maghemite (γ-Fe2O3) nanoparticles in zebrafish
Villacis, Rolando A. R.
Filho, Jose S.
Pina, Benjamin
Azevedo, Ricardo B.
Pic-Taylor, Aline
Mazzeu, Juliana F.
Grisolia, Cesar K.
[J]. AQUATIC TOXICOLOGY, 2017, 191 : 219 - 225
[7] Electrical transport of Mg-doped maghemite (γ-Fe2O3) nanoparticles
Benamara, Majdi
Bouzidi, Souhir
Zahmouli, N.
Soreto Teixeira, S.
Graca, M. P. F.
El Mir, L.
Valente, M. A.
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2022, 128 (07):
[8] Mossbauer study of intermediate superparamagnetic relaxation of maghemite (γ-Fe2O3) nanoparticles
Guivar, J. A. Ramos
Bustamante, A.
Flores, J.
Santillan, M. Mejia
Osorio, A. M.
Martinez, A. I.
Valladares, L. De Los Santos
Barnes, C. H. W.
[J]. HYPERFINE INTERACTIONS, 2014, 224 (1-3): : 89 - 97
[9] Electrical transport of Mg-doped maghemite (γ-Fe2O3) nanoparticles
Majdi Benamara
Souhir Bouzidi
N. Zahmouli
S. Soreto Teixeira
M. P. F. Graça
L. El Mir
M. A. Valente
[J]. Applied Physics A, 2022, 128
[10] Investigation and Characterization of Maghemite (γ-Fe2O3) Nanoparticles and Its Cytotoxicity Studies
Khodabakhshi, Mahdi
Bahari, Ali
[J]. INDIAN JOURNAL OF PHARMACEUTICAL EDUCATION AND RESEARCH, 2017, 51 (02) : 295 - 301

← 1 2 3 4 5 →