Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles:: A biomaterial system
Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles:: A biomaterial system
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DOI：
10.1016/j.actbio.2006.03.005
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发表时间：
2006-07-01
影响因子：
9.7
通讯作者：
Misra, R. D. K.
中科院分区：
文献类型：
--
作者：
Rana, S.;Rawat, J.;Misra, R. D. K.
本研究描述了未掺杂和钕掺杂的二氧化钛包覆的镍铁氧体复合纳米粒子的抗菌功能，并进行了相对比较，通过独特的反胶束和化学水解方法相结合的处理。这种方法有利于形成未掺杂和掺杂的光催化二氧化钛壳和磁性铁氧体芯。需要铁氧体磁芯来帮助使用小磁场从喷涂表面去除颗粒。钕掺杂的二氧化钛壳显着增强的核-壳复合纳米粒子的光催化和抗微生物功能，而不影响镍铁氧体核的磁特性。提高的性能被认为与抑制电子-空穴复合和降低二氧化钛的带隙能量有关。磁场强度的保持确保了复合纳米颗粒通过磁场的受控运动，促进了它们作为可去除的抗微生物光催化剂纳米颗粒的应用。复合纳米颗粒的一致行为表明了所采用的合成方法的可行性。(c)2006 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
The present study describes and makes a relative comparison of the antimicrobial function of undoped and neodymium-doped titania coated-nickel ferrite composite nanoparticles processed by uniquely combining the reverse micelle and chemical hydrolysis approaches. This methodology facilitates the formation of undoped and doped photocatalytic titania shells and a magnetic ferrite core. The ferrite core is needed to help in the removal of particles from the sprayed surface using a small magnetic field. Doping of the titania shell with neodymium significantly enhances the photocatalytic and anti-microbial function of the core-shell composite nanoparticles without influencing the magnetic characteristics of the nickel ferrite core. The increased performance is believed to be related to the inhibition of electron-hole recombination and a decrease in the band gap energy of titania. The retention of magnetic strength ensures controlled movement of the composite nanoparticles by the magnetic field, facilitating their application as removable anti-microbial photocatalyst nanoparticles. The consistent behavior of the composite nanoparticles points to the viability of the synthesis process adopted. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.