نتایج جستجو برای: porous structure

تعداد نتایج: 1609162  

B. Natarajan J. Pandiarajan N. Jeyakumaran N. Prithivikumaran,

Porous Silicon (PS) layers have been prepared from p-type silicon wafers of (100) orientation. SEM, XRD, FTIR and PL studies were done to characterize the surface morphological and optical properties of PS. The porosity of the PS samples was determined using the parameters obtained from SEM images by geometric method. The refractive index values of the PS samples as a function of poros...

2014
Jian Zhang Yubao Zhao Xiao Zhao Zhaolin Liu Wei Chen

Developing efficient catalyst for oxygen evolution reaction (OER) is essential for rechargeable Li-O2 battery. In our present work, porous LaNiO3 nanocubes were employed as electrocatalyst in Li-O2 battery cell. The as-prepared battery showed excellent charging performance with significantly reduced overpotential (3.40 V). The synergistic effect of porous structure, large specific surface area ...

2014
Shaoyuan Li Wenhui Ma Yang Zhou Xiuhua Chen Yongyin Xiao Mingyu Ma Wenjie Zhu Feng Wei

In this paper, the moderately and lightly doped porous silicon nanowires (PSiNWs) were fabricated by the 'one-pot procedure' metal-assisted chemical etching (MACE) method in the HF/H2O2/AgNO3 system at room temperature. The effects of H2O2 concentration on the nanostructure of silicon nanowires (SiNWs) were investigated. The experimental results indicate that porous structure can be introduced ...

Journal: :Nano letters 2012
Mingyuan Ge Jiepeng Rong Xin Fang Chongwu Zhou

Porous silicon nanowires have been well studied for various applications; however, there are only very limited reports on porous silicon nanowires used for energy storage. Here, we report both experimental and theoretical studies of porous doped silicon nanowires synthesized by direct etching of boron-doped silicon wafers. When using alginate as a binder, porous silicon nanowires exhibited supe...

Journal: :Journal of biomedical materials research. Part A 2013
Amir Kraitzer David Alperstein Yoel Kloog Meital Zilberman

Restenosis (renarrowing of the blood vessel wall) and cancer are two different pathologies that have drawn extensive research attention over the years. Antiproliferative drugs such as paclitaxel inhibit cell proliferation and are therefore effective in the treatment of cancer as well as neointimal hyperplasia, which is known to be the main cause of restenosis. Antiproliferative drugs are highly...

Journal: :Journal of Applied Physics 1997

Journal: :E3S web of conferences 2021

Radiation safety is an integral part of environmental and includes a set measures to protect people the environment from harmful effects ionizing radiation. Ferrocyanides transition metals are among most highly effective selective collectors for concentrating radionuclides. Under certain conditions synthesis, ferrocyanide compounds can be formed having layered structure, example, 2Co2[Fe(CN)6] ...

2017
Haifa Zhai Hairui Liu Hongjing Li Liuyang Zheng Chunjie Hu Xiang Zhang Qiling Li Jien Yang

Porous- and hollow-structured LiNb3O8 anode material was prepared by a hydrothermal-assisted sintering strategy for the first time. The phase evolution was studied, and the formation mechanism of the porous and hollow structure was proposed. The formation of the unique structure can be attributed to the local existence of liquid phase because of the volatilization of Li element. As the anode ma...

2015
Nasser Abushrenta Xiaochao Wu Junnan Wang Junfeng Liu Xiaoming Sun

Hierarchical nanoarchitecture and porous structure can both provide advantages for improving the electrochemical performance in energy storage electrodes. Here we report a novel strategy to synthesize new electrode materials, hierarchical Co-based porous layered double hydroxide (PLDH) arrays derived via alkali etching from Co(OH)2@CoAl LDH nanoarrays. This structure not only has the benefits o...

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