Colloidal stability of dextran and dextran/poly ethylene glycol coated TiO2 nanoparticles by hydrothermal assisted sol-gel method

被引：18

作者：

Naghibi, Sanaz ^{[1
]}

Hosseini, Hamid Reza Madaah ^{[2
]}

Sani, Mohammad Ali Faghihi ^{[2
]}

机构：

[1] Islamic Azad Univ, Sci & Res Branch, Dept Mat Engn, Tehran, Iran

[2] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

来源：

CERAMICS INTERNATIONAL | 2013年 / 39卷 / 07期

关键词：

TiO2; nanoparticle; PEG; Dextran; Hydrothermal assisted sol-gel; Colloidal stability; TITANIUM-DIOXIDE; MESOPOROUS TIO2; BIOCOMPATIBILITY; POWDERS;

D O I：

10.1016/j.ceramint.2013.04.018

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：

Colloidal stability of dextran (Dex) and Dex/poly ethylene glycol (PEG) coated TiO2 nanoparticles (NPs) were investigated. The particles were successfully synthesized by a hydrothermal assisted sol-gel technique. The results of Ultraviolet-visible (UV-vis) spectrophotometry showed that Dex and PEG additions during hydrothermal process (HTP) led to the formation of long-term (more than 60 days) stable colloids, while the addition of dispersants after HTP did not have a significant impact on the colloidal stability of NPs. X-ray diffraction (XRD) and selected area electron diffraction (SAED) analyses proved that PEG and/or Dex coated NPs had less crystallinity than the plain TiO2. Fourier transform infrared (FTIR) spectroscopy demonstrated the formation of primary bonds between NPs and polymeric dispersants. High-resolution transmission electron microscopy (HRTEM) displayed stable particles with a core-shell structure resulting from coating of NPs by polymeric materials. Thermo gravimetric analysis (TGA) was also utilized to calculate the proportion of NPs to polymeric dispersant. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：8377 / 8384

页数：8

共 30 条

[1] Agglomeration and sedimentation of TiO2 nanoparticles in cell culture medium
Allouni, Zouhir E.
Cimpan, Mihaela R.
Hol, Paul J.
Skodvin, Tore
Gjerdet, Nils R.
[J]. COLLOIDS AND SURFACES B-BIOINTERFACES, 2009, 68 (01) : 83 - 87
[2] Highly water soluble and recovered dextran coated Fe3O4 magnetic nanoparticles for brackish water desalination
Bai, Hongwei
Liu, Zhaoyang
Sun, Darren Delai
[J]. SEPARATION AND PURIFICATION TECHNOLOGY, 2011, 81 (03) : 392 - 399
[3] Brinker C. J., 2013, SOL GEL SCI PHYS CHE, DOI [DOI 10.1016/B978-0-08-057103-4.50001-5, 10.1016/C2009-0-22386-5]
[4] Photoinduced reactivity of titanium dioxide
Carp, O
Huisman, CL
Reller, A
[J]. PROGRESS IN SOLID STATE CHEMISTRY, 2004, 32 (1-2) : 33 - 177
[5] Nanomedicines and nanotoxicology: some physiological principles
Garnett, M. C.
Kallinteri, P.
[J]. OCCUPATIONAL MEDICINE-OXFORD, 2006, 56 (05): : 307 - 311
[6] In vitro biocompatibility study of nano TiO2 materials
Han, W.
Wang, Y. D.
Zheng, Y. F.
[J]. MULTI-FUNCTIONAL MATERIALS AND STRUCTURES, PTS 1 AND 2, 2008, 47-50 : 1438 - +
[7] In vivo biocompatibility studies of nano TiO2 materials
Han, Wei
Wang, Yuedan
Zheng, Yufeng
[J]. MULTI-FUNCTIONAL MATERIALS AND STRUCTURES II, PTS 1 AND 2, 2009, 79-82 : 389 - +
[8] TiO2 photocatalysis:: A historical overview and future prospects
Hashimoto, K
Irie, H
Fujishima, A
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (12): : 8269 - 8285
[9] Kajihara K, 1998, J AM CERAM SOC, V81, P2670, DOI 10.1111/j.1151-2916.1998.tb02675.x
[10] FTIR spectroscopy of biodegraded historical textiles
Kavkler, Katja
Gunde-Cimerman, Nina
Zalar, Polona
Demsar, Andrej
[J]. POLYMER DEGRADATION AND STABILITY, 2011, 96 (04) : 574 - 580

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