نتایج جستجو برای: modified zno nanopowder

تعداد نتایج: 270424  

Journal: :Oriental journal of chemistry 2023

This work aims to investigate the optical and electrical features of light-emitting diodes based on conjugated oligomer various quantities ZnO nanoparticles. Thermionic emission Cheung’s methods have been employed analyze results. Furthermore, analytical findings concerning Photoluminescence (PL) are modeled using sum Franck-Condon (FC) analysis Gaussians Fits. The p-n junction has formed betwe...

Journal: :Nanotechnology 2009
C Y Lee J Y Wang Y Chou C L Cheng C H Chao S C Shiu S C Hung J J Chao M Y Liu W F Su Y F Chen C F Lin

We report bright white-light electroluminescence (EL) from a diode structure consisting of a ZnO nanorod (NR) and a p-type conducting polymer of poly(fluorine) (PF) fabricated using a hydrothermal method. ZnO NRs are successfully grown on an organic layer of PF using a modified seeding layer. The EL spectrum shows a broad emission band covering the entire visible range from 400 to 800 nm. White...

2016
Qian Xu Wen Fan Shui-Fen Ye Yi-Bo Cong Wei Qin Shi-Ya Chen Jing Cai

Parkinson's disease (PD) is a neurodegenerative disease with the pathological hallmark of reduced nigrostriatal dopamine. In traditional Chinese medicine (TCM) clinical practice, the nanopowder of Cistanche tubulosa has therapeutic effects on PD. To identify the therapeutic mechanism, this study tested the protective effect of different doses of MPP+-induced toxicity in MES23.5 cells using the ...

2017
Hui Yang Qiangqiang Ye Ruixue Zeng Junkai Zhang Lei Yue Ming Xu Zhi-Jun Qiu Dongping Wu

In this paper, capacitive-type humidity sensors were prepared by sequentially drop-coating the aqueous suspensions of zinc oxide (ZnO) nanopowders and polyvinyl pyrrolidone-reduced graphene oxide (PVP-RGO) nanocomposites onto interdigitated electrodes. Significant improvements in both sensitivity and linearity were achieved for the ZnO/PVP-RGO sensors compared with the PVP-RGO/ZnO, PVP-RGO, and...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2015
Min Wu Wen Ding Junli Meng Henmei Ni Ying Li Quanhong Ma

A novel biosensor was developed by immobilizing hemoglobin (Hb) on a glassy carbon electrode (GCE) modified with a composite of ZnO nano-rods and carbon nanofiber (CNF), a strong reducer, hydrazine, was firstly used to evaluate the electrochemical behavior of Hb on Hb/ZnO/CNF/GCE. UV-vis and circular dichroism (CD) spectra indicated the conformational structure of Hb interaction with ZnO/CNF wa...

2010
Zhifu Pei Xingfa Ma Pengfei Ding Wuming Zhang Zhiyuan Luo Guang Li

Sensitive, selective and fast detection of chemical warfare agents is necessary for anti-terrorism purposes. In our search for functional materials sensitive to dimethyl methylphosphonate (DMMP), a simulant of sarin and other toxic organophosphorus compounds, we found that zinc oxide (ZnO) modification potentially enhances the absorption of DMMP on a manganese dioxide (MnO(2)) surface. The adso...

2017
Rosalynn Quiñones Deben Shoup Grayce Behnke Cynthia Peck Sushant Agarwal Rakesh K Gupta Jonathan W Fagan Karl T Mueller Robbie J Iuliucci Qiang Wang

In this study, perfluorinated phosphonic acid modifications were utilized to modify zinc oxide (ZnO) nanoparticles because they create a more stable surface due to the electronegativity of the perfluoro head group. Specifically, 12-pentafluorophenoxydodecylphosphonic acid, 2,3,4,5,6-pentafluorobenzylphosphonic acid, and (1H,1H,2H,2H-perfluorododecyl)phosphonic acid have been used to form thin f...

2013
Munusamy Thirumavalavan Kai-Lin Huang Jiunn-Fwu Lee

Nano zinc oxide (ZnO) with moderate surface area and high pore volume were prepared using a facile preparation method. Chitosan was utilized as both chelating and structure directing agent. The application of chitosans in this study suggested that even biowastes can be served in a productive manner economically. The surface modification of chitosan was carried out in order to increase the inter...

2015
Ya-Hui Duan Yu Duan Ping Chen Ye Tao Yong-Qiang Yang Yi Zhao

As material for flexible transparent electrodes for organic photoelectric devices, the silver nanowires (AgNWs) have been widely studied. In this work, we propose a hybrid flexible anode with photopolymer substrate, which is composed of spin-coating-processed AgNW meshes and of zinc oxide (ZnO) prepared by low-temperature (60°C) atomic layer deposition. ZnO effectively fills in the voids of the...

2014
Valentina Cauda Paolo Motto Denis Perrone Gianluca Piccinini Danilo Demarchi

The electrical conductance response of single ZnO microwire functionalized with amine-groups was tested upon an acid pH variation of a solution environment after integration on a customized gold electrode array chip. ZnO microwires were easily synthesized by hydrothermal route and chemically functionalized with aminopropyl groups. Single wires were deposited from the solution and then oriented ...

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