نتایج جستجو برای: hydroxyapatite encapsulated γ fe2o3

تعداد نتایج: 104864  

Journal: :Journal of the American Chemical Society 2005

Journal: :Journal of materials research and technology 2022

This paper reports on the in-situ synthesis, optimization, characterization and cytotoxicity tests of multi-layer graphene (MLG) encapsulated Fe/Fe2O3 nanoparticles (Fe/Fe2O3@C core–shell nanostructures) by spray drying-assisted chemical vapor deposition (CVD) using iron-nitrate/silica-based precursors. The influences CVD reaction temperature, holding time, CH4/H2 gas flows pressure synthesis M...

Journal: :Nanoscale 2015
Andreas Erlebach Heinz-Dieter Kurland Janet Grabow Frank A Müller Marek Sierka

The atomic structure and properties of nanoparticulate Fe2O3 are characterized starting from its smallest Fe2O3 building unit through (Fe2O3)n clusters to nanometer-sized Fe2O3 particles. This is achieved by combining global structure optimizations at the density functional theory level, molecular dynamics simulations by employing tailored, ab initio parameterized interatomic potential function...

Journal: :Advanced Materials Letters 2023

The noble metal nanoparticles sandwiched between the stable inorganic core and thin polymer shell could not only enhance their stability, but also cut short diffusion route of outside reactants through toward encapsulated nanoparticles, which has drawn great attention. However, weak compatibility among core, shell, makes preparation metal-confined hybrid catalysts complicated, limits popular ap...

Journal: :Nanotechnology 2012
Wei Song David C Markel Sunxi Wang Tong Shi Guangzhao Mao Weiping Ren

The failure of prosthesis after total joint replacement is due to the lack of early implant osseointegration. In this study polyvinyl alcohol-collagen-hydroxyapatite (PVA-Col-HA) electrospun nanofibrous meshes were fabricated as a biomimetic bone-like extracellular matrix for the modification of orthopedic prosthetic surfaces. In order to reinforce the PVA nanofibers, HA nanorods and Type I col...

2016
Minmin Chen Enyue Zhao Qingbo Yan Zhongbo Hu Xiaoling Xiao Dongfeng Chen

Fe2O3 nanorods exposing (001) and (010) plane as well as Fe2O3 nanosheets exposing (001) plane have been successfully synthesized. Fe2O3 nanosheets exhibit better cycle performance and rate capabilities than that of Fe2O3 nanorods. The discharge capacity of Fe2O3 nanosheets can stabilize at 865 mAh/g at the rate of 0.2 C (1C = 1000 mA/g) and 570 mAh/g at the rate of 1.2 C after 80 cycles, which...

2013
Eul Noh Kyung-Jong Noh Kang-Seop Yun Bo-Ra Kim Hee-June Jeong Hyo-Jin Oh Sang-Chul Jung Woo-Seung Kang Sun-Jae Kim

The effect of TiO2 layer applied to the conventional Fe2O3/FTO photoanode to improve the photoelectrochemical performance was assessed from the viewpoint of the microstructure and energy band structure. Regardless of the location of the TiO2 layer in the photoanodes, that is, Fe2O3/TiO2/FTO or TiO2/Fe2O3/FTO, high performance was obtained when α-Fe2O3 and H-TiNT/anatase-TiO2 phases existed in t...

Journal: :Chemosphere 2022

Iron-based catalysts were developed to achieve the hydrodechlorination (HDC)/oxidation of polychlorinated biphenyls (PCBs) from thermal desorption off-gas, and Fe3O4/γ-Al2O3 showed higher dechlorination efficiency than Fe2O3/γ-Al2O3. The optimal Fe loading resulted in 95.5% degradation 76.9% toxicity reduction gaseous PCBs, exhibited excellent stability during a 60-h test. gas chromatography–ma...

Journal: :Minerals 2021

Because of the diversification industries in developing cities, phenomenon simultaneous contamination various kinds pollutants is becoming common, and environmental process multi-contaminated mediums has attracted attention recent years. In this study, p-arsanilic acid (ASA), a kind organic arsenic feed additive that contains group chemical structure, used as typical contaminant to investigate ...

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