نتایج جستجو برای: nanosheets

تعداد نتایج: 5216  

Journal: :Nanoscale 2014
Takeshi Fujita Yoshikazu Ito Yongwen Tan Hisato Yamaguchi Daisuke Hojo Akihiko Hirata Damien Voiry Manish Chhowalla Mingwei Chen

The production of two-dimensional rhenium disulfide (ReS2) nanosheets by exfoliation using lithium intercalation is demonstrated. The vibrational and photoluminescence properties of the exfoliated nanosheets are investigated, and the local atomic structure is studied by scanning and transmission electron microscopy. The catalytic activity of the nanosheets in a hydrogen evolution reaction (HER)...

2014
Si Qin Weiwei Lei Dan Liu Ying Chen

Molybdenum disulfide (MoS2) nanosheets have unique physical and chemical properties, which make it a perfect candidate for next generation electronic and energy storage applications. Herein, we show the successful synthesis of nitrogen-doped MoS2 nanosheets by a simple, effective and large-scale approach. MoS2 nanosheets synthesised by this method show a porous structure formed by curled and ov...

Journal: :Nanoscale 2009
Haibing Li Yuling Li

Highly luminescent and water-soluble cobalt(ii)-bis(8-hydroxyquinoline) (CoQ(2)) nanosheets have been successfully synthesized via a simple, rapid sonochemical method. The water-soluble CoQ(2) nanosheets were characterized by luminescence spectroscopy, UV-vis spectroscopy, FT-IR spectroscopy and transmission electron microscopy (TEM). The CoQ(2) nanosheets allow highly sensitive and selective d...

Journal: :Chemical communications 2013
Yeteng Zhong Yijun Yang Ying Ma Jiannian Yao

By using 1,5-pentanediol as a capping and structure directing agent, ultrathin Eu2O3 nanosheets (<1 nm) have been synthesized and assembled into a layered structure. The lateral dimensions of the nanosheets can be tuned by simply controlling the reaction time. These layered structures exhibit a strong quantum size effect due to the extremely small thickness of the assembled nanosheets.

Journal: :ACS applied materials & interfaces 2010
Qing Tang Yafei Li Zhen Zhou Yongsheng Chen Zhongfang Chen

Through density functional theory computations, we systematically investigated the structural, electronic, and magnetic properties as well as the relative stabilities of fully and partially hydrogenated ZnO nanosheets. Unlike bare ZnO nanosheets terminating with polar {0001} surfaces, their hydrogenated counterparts preserve the initial wurtzite configuration. Full hydrogenation is more favorab...

Journal: :Nanoscale 2016
Parthiban Ramasamy Miri Kim Hyun-Soo Ra Jinkwon Kim Jong-Soo Lee

Copper based ternary and quaternary semiconductor nanostructures are of great interest for the fabrication of low cost photovoltaics. Although well-developed syntheses are available for zero dimensional (0D) nanoparticles, colloidal synthesis of two dimensional (2D) nanosheets remains a big challenge. Here we report, for the first time, a simple and reproducible cation exchange approach for 2D ...

Journal: :Dalton transactions 2014
B Schneiderová J Demel J Pleštil H Tarábková J Bohuslav K Lang

We report the preparation of monometallic Co(2+)/Co(3+) layered double hydroxide, intercalated with lactate anions (LCoH-Lactate), and its spontaneous delamination in water to form cobalt hydroxide nanosheets. These hydroxide nanosheets formed stable aqueous dispersions. The thickness of a nanosheet was estimated to be approximately 1 nm by atomic force microscopy and small angle X-ray scatteri...

Journal: :Nanoscale 2013
Bing Yu Xuesong Jiang Jie Yin

We here demonstrated a novel square silica/titania mesoporous nanosheet which was prepared with hyperbranched poly(ether amine) nanosheets (hPEA-NSs) as a template. TEM and SEM images reveal that the obtained nanosheets possess a large aspect ratio with the average edge length of 1-2 μm and thickness of ~40 nm, respectively. Various metal nanoparticles such as gold, silver, and platinum can be ...

2015
Yosuke Okamura Yu Nagase Shinji Takeoka

We have proposed free-standing centimeter-sized ultra-thin films (nanosheets) for biomedical applications. Such nanosheets exhibit unique properties such as transparency, flexibility, and good adhesiveness. However, they are only easily adhered to broad and flat surfaces due to their dimensions. To this end, we recently proposed an innovative nanomaterial: the nanosheets fragmented into submill...

2013
Daqiang Gao Mingsu Si Jinyun Li Jing Zhang Zhipeng Zhang Zhaolong Yang Desheng Xue

Freestanding MoS2 nanosheets with different sizes were prepared through a simple exfoliated method by tuning the ultrasonic time in the organic solvent. Magnetic measurement results reveal the clear room-temperature ferromagnetism for all the MoS2 nanosheets, in contrast to the pristine MoS2 in its bulk form which shows diamagnetism only. Furthermore, results indicate that the saturation magnet...

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