Multicore-shell structured Ce-In2O3 for acetone detection by spray pyrolysis using NaCl as a high temperature auxiliary

Author(s):  
Xu Li ◽  
Yinglin Wang ◽  
Pengfei Cheng ◽  
Yanming Liu ◽  
Zhaohui Lei ◽  
...  

In2O3 doped with Ce element was synthesized by a simple one-step spray pyrolysis method. In this method, NaCl was used as high-temperature auxiliary and template to synthesize multicore-shell structure sample....

2008 ◽  
Vol 116 (1353) ◽  
pp. 600-604 ◽  
Author(s):  
Jung Sang CHO ◽  
Dae Soo JUNG ◽  
Seung Kwon HONG ◽  
Yun Chan KANG

2018 ◽  
Vol 1 (1) ◽  
pp. 57-66
Author(s):  
Fenfen Fenda Florena ◽  
◽  
Dwindra Wilham Maulana ◽  
Ferry Faizal ◽  
Bambang Mukti Wibawa ◽  
...  

Spherical particles of Zn doped MgO were prepared by one-step spray pyrolysis method. The crystalline nature and particle size of the samples were characterized by X-ray diffraction analysis (XRD). The morphology of samples was studied by scanning electron microscope (SEM) and the presence of Zn in the sample was confirmed by energy dispersive X-ray analysis (EDX). The optical properties of the samples were investigated using photoluminescence spectroscopy (PL) analysis to obtain excitation and emission spectra of the samples. Results indicated that the doped MgO particles exhibited a cubic structure without hexagonal wurtzite structure as the Zn concentrations were increased. Spherical shape and porous particles are found with increasing of doping concentration. The optical band gap of MgO altered with the addition of doping concentration. A considerable redshift of about ~0.08 – 0.13 eV in the excitation spectra of 2.22 eV emission band was revealed in Zn doped MgO samples. It was highlighted that Zn doped MgO prepared by the spray pyrolysis generated emission at UV-Vis wavelength required for many applications.


2014 ◽  
Vol 129 ◽  
pp. 101-103 ◽  
Author(s):  
Xiuyun Zhang ◽  
Huarui Xu ◽  
Yunyun Zhao ◽  
Guisheng Zhu ◽  
Aibing Yu

2013 ◽  
Vol 737 ◽  
pp. 20-27 ◽  
Author(s):  
Camellia Panatarani ◽  
Dunden Gilang Muharam ◽  
Bambang Mukti Wibawa ◽  
I Made Joni

A blue luminescent of ZnO:Zn nanocrystal has been successfully prepared by one step spray pyrolysis method without reducing gas atmosphere. Zinc acetate dihydrate aqueous solutions (0.05 M) were atomized by ultrasonic atomizer. The atomizer used an air as carrier gas with 1, 3 and 5 L/min flowrate. The tubular reactor was set at 500, 600 and 700oC. As prepared samples were characterized by means of x-ray diffraction spectroscopy and scanning electron microscope-energy dispersive x-ray spectroscopy (SEM-EDS). The crystal size of as prepared particles calculated by Scherrer’s equation give 10-20 nm. The luminescent properties of as prepared particles were measured using spectrofluorophotometer. The highest photoluminescent intensity of particles irradiated with excited wavelength of 250 nm was obtained from samples prepared using 5 L/min carrier gas with temperature of tubular reactor 700oC. High intensity of blue luminescent was obtained due to oxygen vacancy in ZnO:Zn.


2020 ◽  
Vol 853 ◽  
pp. 56-60
Author(s):  
Alexa Gaona-Esquivel ◽  
Diana S. Hernández-Manzo ◽  
Perla J. Sánchez-Trujillo ◽  
Oscar E. Cigarroa-Mayorga ◽  
Miguel Meléndez-Lira

In this work, the synthesis of manganese oxide nanoparticles was achieved by one-step spray pyrolysis method. The nanoparticles were synthesized just from MnCl2 aqueous solution. The solution was nebulized to a Si substrate placed at 400 °C for 1, 5 10 and 20 min and transported at a 0.1 L /min rate in a Nitrogen flux. The X-ray diffraction confirms tetragonal Mn3O4 as the unique phase in the whole sample. The scanning electron microscopy images proved the achievement of irregular nanoparticles with an average diameter of 280 nm experimentally determined by dynamic light scattering. Energy dispersive X-ray and Raman spectroscopy confirmed that the nanoparticles were obtained with Mn3O4 single-phase and the employed methodology prevented any contamination. The nanoparticles proved to induce temperature enhancement on artificial breast tissue by exposition to microwave radiation by achieving an increase in temperature around 8 %.


RSC Advances ◽  
2019 ◽  
Vol 9 (14) ◽  
pp. 7645-7651 ◽  
Author(s):  
Xin Wang ◽  
Min Xue ◽  
Songbai Liu ◽  
Kuo Jiang ◽  
Zhuli Zhang

Herein, powders composed of La2Zr2O7(LZ) and ZrO2phases were synthesized by anin situreaction using a sol-spray pyrolysis method; moreover, 24 mol% LaO1.5–ZrO2powders were characterized by XRD, Raman, SEM, and TEM.


1988 ◽  
Vol 27 (Part 1, No. 8) ◽  
pp. 1544-1545 ◽  
Author(s):  
Hitoshi Nobumasa ◽  
Kazuharu Shimizu ◽  
Yukishige Kitano ◽  
Masataka Tanaka ◽  
Tomoji Kawai

Author(s):  
Fenfen Fenda Florena ◽  
◽  
Dwindra Wilham Maulana ◽  
Ferry Faizal ◽  
Bambang Mukti Wibawa ◽  
...  

Spherical particles of Zn doped MgO were prepared by one-step spray pyrolysis method. The crystalline nature and particle size of the samples were characterized by X-ray diffraction analysis (XRD). The morphology of samples was studied by scanning electron microscope (SEM) and the presence of Zn in the sample was confirmed by energy dispersive X-ray analysis (EDX). The optical properties of the samples were investigated using photoluminescence spectroscopy (PL) analysis to obtain excitation and emission spectra of the samples. Results indicated that the doped MgO particles exhibited a cubic structure without hexagonal wurtzite structure as the Zn concentrations were increased. Spherical shape and porous particles are found with increasing of doping concentration. The optical band gap of MgO altered with the addition of doping concentration. A considerable redshift of about ~0.08 – 0.13 eV in the excitation spectra of 2.22 eV emission band was revealed in Zn doped MgO samples. It was highlighted that Zn doped MgO prepared by the spray pyrolysis generated emission at UV-Vis wavelength required for many applications.


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