نتایج جستجو برای: γ fe2o3 nanoparticles 11 diacetate

تعداد نتایج: 567594  

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

iron oxide (fe2o3) nanoparticles were synthesized by a simple approach using sodium borohydride (nabh4) and iron chloride hexahydrate (fecl3.6h2o). their physicochemical properties were characterized by high resolution transmission electron microscopy (hrtem), scanning electron microscopy (sem), x-ray diffraction (xrd) and electron dispersive spectroscopy (eds). xrd pattern showed that the iron...

2003
Larken E. Euliss Stephanie G. Grancharov Stephen O’Brien Timothy J. Deming Galen D. Stucky C. B. Murray G. A. Held

We demonstrate that highly crystalline, monodisperse maghemite (γ-Fe2O3) nanoparticles, synthesized in organic solvents, can be effectively transferred into an aqueous medium using an ammonium salt and stabilized at neutral pH. The nanoparticles remain monodisperse, as characterized by TEM and XRD, as well as superparamagnetic, as determined by SQUID magnetometry. When the aqueous maghemite is ...

Journal: :Chinese Journal of Catalysis 2021

Controlling the interaction between metal nanoparticles and support is a means to tune catalytic activity stability. Herein we investigated influence of morphology hematite on performance gold for CO oxidation. Nanosphere nanorod forms hematite, ?-Fe2O3(S) ?-Fe2O3(R) respectively, were used nanoparticles. The surface was more corrugated than that ?-Fe2O3(S). These defects provide anchoring site...

2014
Huanwen Wang Zijie Xu Huan Yi Huige Wei Zhanhu Guo Xuefeng Wang

0.1016/j.nanoen.2 lsevier Ltd. All rig thors. Tel.: +86 2 : zhanhu.guo@lam Abstract To increase the energy density of supercapacitors to approach that of batteries, the current research is always directed towards the cathode materials, whereas the anode materials are rarely studied. In the present work, single-crystalline Fe2O3 nanoparticles directly grown on graphene hydrogels are investigated...

2013
Gaoyuan Ge Hengfang Wu Fei Xiong Yu Zhang Zhirui Guo Zhiping Bian Jindan Xu Chunrong Gu Ning Gu Xiangjian Chen Di Yang

One major obstacle for successful application of nanoparticles in medicine is its potential nanotoxicity on the environment and human health. In this study, we evaluated the cytotoxicity effect of dimercaptosuccinic acid-coated iron oxide (DMSA-Fe2O3) using cultured human aortic endothelial cells (HAECs). Our results showed that DMSA-Fe2O3 in the culture medium could be absorbed into HAECs, and...

2016
Xijia Yang Haiming Sun Lishu Zhang Lijun Zhao Jianshe Lian Qing Jiang

A novel three-dimensional (3D) α-Fe2O3/MoS2 hierarchical nanoheterostructure is effectively synthesized via a facile hydrothermal method. The zero-dimensional (0D) Fe2O3 nanoparticles guide the growth of two-dimensional (2D) MoS2 nanosheets and formed 3D flower-like structures, while MoS2 facilitates the good dispersion of porous Fe2O3 with abundant oxygen vacancies. This charming 3D-structure ...

2016
Mengmeng Rui Chuanxin Ma Yi Hao Jing Guo Yukui Rui Xinlian Tang Qi Zhao Xing Fan Zetian Zhang Tianqi Hou Siyuan Zhu

Nanomaterials are used in practically every aspect of modern life, including agriculture. The aim of this study was to evaluate the effectiveness of iron oxide nanoparticles (Fe2O3 NPs) as a fertilizer to replace traditional Fe fertilizers, which have various shortcomings. The effects of the Fe2O3 NPs and a chelated-Fe fertilizer (ethylenediaminetetraacetic acid-Fe; EDTA-Fe) fertilizer on the g...

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