Scheelite (CaWO4)-type microphosphors: Facile synthesis, structural characterization and photoluminescence properties

2016 ◽  
Vol 30 (32n33) ◽  
pp. 1650400 ◽  
Author(s):  
Yuanyuan Han ◽  
Dan Wang ◽  
Danyang Liang ◽  
Shiqi Wang ◽  
Guoxin Lu ◽  
...  
Keyword(s):  
Luminescence Decay ◽  
Precipitation Method ◽  
Ammonium Bromide ◽  
Photoluminescence Properties ◽  
Facile Synthesis ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Broad Emission ◽  
Transition Formula ◽  
Cetyltrimethyl Ammonium ◽  
Uv Excitation

Scheelite (CaWO4)-type microphosphors were synthesized by the precipitation method assisted with cetyltrimethyl ammonium bromide (CTAB). All compounds crystallized in the tetragonal structure with space group [Formula: see text] (No. 88). FE-SEM micrographs illustrate the spherical-like morphologies and rough surface. PL spectra indicate the broad emission peak maximum at 613 nm under UV excitation. Luminescence decay curves monitored by [Formula: see text] transition ([Formula: see text] nm) of Eu[Formula: see text] in doped CaWO4 are presented, the curves exhibit a single-exponential feature and the lifetime for doped CaWO4 is 0.61 ms.

Surfactant assisted synthesis of SrFe10Al2O19: Magnetic and Supercapacitor ferrite

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3099-3106 ◽  
Author(s):  
D. Neupane ◽  
H. Adhikari ◽  
B. Sapkota ◽  
J. Candler ◽  
R. Gupta ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Precipitation Method ◽  
Ammonium Bromide ◽  
Concomitant Increase ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Structure Morphology ◽  
Powder Particles ◽  
Cetyltrimethyl Ammonium ◽  
Co Precipitation ◽  
Surfactant Assisted

ABSTRACTThe aluminum doped SrFe12O19 hexaferrite samples were prepared via co-precipitation method using cetyltrimethyl ammonium bromide (CTAB) as a surfactant. The effects of CTAB content (x = 0, 1, 3, 6 and 9 wt. %) on the structure, morphology, and electrocapacitive behavior of the SrFe10Al2O19 nanoparticles were investigated. The use of CTAB was observed to be effective in eliminating α-Fe2O3 phase from samples. Morphological changes including grain and crystallite size was noticed with the increase in the CTAB content. With the increase in CTAB, powder particles grew in size and thickness. A concomitant increase in magnetization due to crystal growth was observed. Electrochemical performance of supercapacitors was evaluated by cyclic voltammetry (CV). Highest power density of 368.09 WKg-1 and energy density of 0.916 WhKg-1 was observed for 3% and 1% CTAB samples, respectively.

Fe(iii) induced structural, optical, and dielectric behavior of cetyltrimethyl ammonium bromide stabilized strontium stannate nanoparticles synthesized by a facile wet chemistry route

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17202-17209 ◽  
Author(s):  
Astakala Anil Kumar ◽  
Ashok Kumar ◽  
J. K. Quamara ◽  
G. R. Dillip ◽  
Sang Woo Joo ◽  
...  
Keyword(s):  
Dielectric Behavior ◽  
Ammonium Bromide ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Wet Chemistry ◽  
Strontium Stannate ◽  
Cetyltrimethyl Ammonium

Correlation between the structural, optical and dielectric behavior of Fe doped perovskite strontium stannate nanoparticles synthesized by a facile wet chemistry route.

A Novel Method to Determinate Nonylphenol Contents in Water Samples Based on Laccases Cetyltrimethyl Ammonium Bromide-Carbon Paste Electrode

2012 ◽  
Vol 550-553 ◽  
pp. 2009-2013
Author(s):  
Yan Qun Liu ◽  
Jian Jun Ding ◽  
Yong Liang ◽  
Wen Hong Qiu ◽  
Feng Luo ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Food Processing ◽  
Ammonium Bromide ◽  
Carbon Paste ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Minimum Detectable Limit ◽  
Novel Method ◽  
Cetyltrimethyl Ammonium ◽  
Optimized Conditions ◽  
Paste Electrode

The eznyme biosensor(EB) as a sort of biosensors are widely used analyse target substances from samples of medicine, environment and food processing in recent years. During the EB preparation, effective immobilization of enzyme is a key step related with the activity of enzyme and the lifetime of EB. In current research, a method to determine nonylphenol(NP) contents in the water samlples has been developed on the base of laccases cetyltrimethyl ammonium bromide -carbon paste electrode. The experimental results showed that the EB developed in this optimized conditions, its minimum detectable limit could reach 0.2µg／L, and the recovery was in the range from 91% to 109% at the concentrations form 3.0×10-4 mol.L-1 to 5.0×10-6 mol.L-1. The sensor is perfect which is convenient, effective, and cheap and really can be used practice.

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