نتایج جستجو برای: mn zno

تعداد نتایج: 59132  

Journal: :VNU Journal of Science: Mathematics - Physics 2021

ZnO is a promising photocatalyst for photocatalytic oxidation of organic compounds under the influence sunlight that provides clean energy and decomposes sustainable pollutants substances. found to have non-toxic properties, long-term stability, high carrier mobility, low cost biocompatibility. However, some disadvantages limit its use in photocatalysis. Due wide bandgap, can only be activated ...

2016
Hao Zhang Yuan Cen Yu Du Shuangchen Ruan

ZnO/graphene (ZnO-G) hybrid composites are prepared via hydrothermal synthesis with graphite, N-methyl-pyrrolidone (NMP), and Zn(NO₃)₂·6H₂O as the precursors. The characterizations, including X-ray diffraction (XRD), thermogravimetric analyses (TGA), Raman spectroscopy, and transmission electron microscopy (TEM) indicate the formation of ZnO-G. Gas sensors were fabricated with ZnO-G composites ...

2014
Kyu Hwan Shim John Hulme Eun Ho Maeng Meyoung-Kon Kim Seong Soo A An

Nanoparticles (NPs) are currently used in chemical, cosmetic, pharmaceutical, and electronic products. Nevertheless, limited safety information is available for many NPs, especially in terms of their interactions with various binding proteins, leading to potential toxic effects. Zinc oxide (ZnO) NPs are included in the formulation of new products, such as adhesives, batteries, ceramics, cosmeti...

2013
Kimleang Khun Zafar Hussain Ibupoto Mohamad S. AlSalhi Muhammad Atif Anees A. Ansari Magnus Willander

In this study, by taking the advantage of both inorganic ZnO nanoparticles and the organic material chitosan as a composite seed layer, we have fabricated well-aligned ZnO nanorods on a gold-coated glass substrate using the hydrothermal growth method. The ZnO nanoparticles were characterized by the Raman spectroscopic techniques, which showed the nanocrystalline phase of the ZnO nanoparticles. ...

2015
Yuan-Chang Liang Shang-Luen Liu Hao-Yuan Hsia

We successfully prepared one-dimensional ZnO-ZnFe2O4 (ZFO) heterostructures for acetone gas-sensing and photoelectrochemical applications, by using sputter deposition of ZFO crystallites on ZnO nanostructure templates. The nanoscale ZFO crystallites were homogeneously coated on the surfaces of the ZnO nanostructures. Electron microscope images revealed that the ZnO-ZFO heterostructures exhibite...

2014
Seiya Fujita Kazunori Matsuura

A viral β-annulus peptide connected with a zinc oxide (ZnO)-binding sequence (HCVAHR) at its N-terminal was synthesized, and the inclusion behavior of quantum-sized ZnO nanoparticles into the peptide nanocapsules formed by self-assembly of the peptide in water was investigated. Dynamic light scattering (DLS) measurements showed that ZnO nanoparticles (approximately 10 nm) in the presence of the...

Journal: :Nanotechnology 2015
Ravi K Biroju Nikhil Tilak Gone Rajender S Dhara P K Giri

We demonstrate the graphene assisted catalyst free growth of ZnO nanowires (NWs) on chemical vapor deposited (CVD) and chemically processed graphene buffer layers at a relatively low growth temperature (580 °C) in the presence and absence of ZnO seed layers. In the case of CVD graphene covered with rapid thermal annealed ZnO buffer layer, the growth of vertically aligned ZnO NWs takes place, wh...

Journal: :Journal of The Electrochemical Society 2021

The introduction of transition metal dopants such as Fe and Co in zinc oxide enables substantially enhanced reversible capacities greater reversibility the de-/lithiation reactions occurring. Herein, we report a comprehensive analysis electrochemical processes taking place Mn-doped ZnO (Zn 0.9 Mn 0.1 O) carbon-coated Zn O upon de-/lithiation. results shed light on impact dopant chemistry and, e...

Journal: :Physical chemistry chemical physics : PCCP 2016
Ting Gong Lijun Qin Jian Lu Hao Feng

ZnO modified ZSM-5 and Y zeolites are synthesized by performing atomic layer deposition (ALD) of ZnO to HZSM-5 and HY using diethyl zinc and water as the precursors. The surface area and pore volume of ZSM-5 and Y zeolites are progressively reduced with the increasing number of ZnO ALD cycles. XRD and SEM characterization methods show that highly dispersed ZnO species are deposited on the inter...

Journal: :Small 2012
Firat Güder Yang Yang Andreas Menzel Chunyu Wang Julia Danhof Kittitat Subannajui Andreas Hartel Daniel Hiller Rajeevan Kozhummal Niranjan S Ramgir Volker Cimalla Ulrich T Schwarz Margit Zacharias

A new technique is reported for the transformation of smooth nonpolar ZnO nanowire surfaces to zigzagged high-index polar surfaces using polycrystalline ZnO thin films deposited by atomic layer deposition (ALD). The c-axis-oriented ZnO nanowires with smooth nonpolar surfaces are fabricated using vapor deposition method and subsequently coated by ALD with a ZnO particulate thin film. The synthes...

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