Synthesis, Optical Properties and Applications of Ternary Oxide Nanoparticles by a Microwave Technique

2021 ◽  
Vol 21 (10) ◽  
pp. 5307-5311
Author(s):  
Mingling Liu ◽  
Meiling Sun ◽  
Zhijia Wang
Keyword(s):  
Optical Properties ◽  
High Efficiency ◽  
Low Cost ◽  
Ternary Oxide ◽  
Structural And Optical Properties ◽  
High Demand ◽  
Microwave Technique ◽  
Binary Oxides ◽  
Nanomaterial Synthesis ◽  
Potential Applications

Nanocrystal preparation is in high demand due to the development of nanodevices. Nanostructures or microstructures of binary oxides such as TiO2, ZnO, and Al2O3 have been extensively prepared and studied. Synthesis of ternary oxide nanomaterials with controlled structures, morphologies, and sizes are of interest due to their potential applications in nanodevices caused by tunable energy level, bandgap, and structure. In this work, a solution-based method is used to prepare CaWO4 and LaPO4 ternary oxide nanomaterials by microwave technique. Controlled sizes and morphologies including nanorods and microspheres are synthesized by the microwave method, which is believed to be a facile and low-cost technique for the synthesis of ternary oxide nanomaterials. Furthermore, the (relatively) quick process enables high efficiency of the production. The structural and optical properties of the prepared nanomaterials are also investigated in this work. This work benefits nanomaterial synthesis for nanomanufacturing and applications in lighting and photodynamic activations as well as optical storage.

Sintering and Hot-Pressing of Ti2AlC Obtained by SHS Process

2010 ◽  
Vol 63 ◽  
pp. 282-286 ◽  
Author(s):  
Leszek Chlubny ◽  
Jerzy Lis ◽  
Mirosław M. Bućko
Keyword(s):  
Hot Pressing ◽  
High Efficiency ◽  
Layer Structure ◽  
Low Cost ◽  
Max Phases ◽  
Fine Powders ◽  
High Temperature Synthesis ◽  
Low Energy Consumption ◽  
Potential Applications ◽  
Xrd Method

Some of ternary materials in the Ti-Al-C system are called MAX-phases and are characterised by heterodesmic layer structure. Their specific structure consisting of covalent and metallic chemical bonds influence its semi-ductile features locating them on the boundary between metals and ceramics, which may lead to many potential applications, for example as a part of a ceramic armour. Ti2AlC is one of this nanolaminate materials. Self-propagating High-temperature Synthesis (SHS) was applied to obtain sinterable powders of Ti2AlC Utilization of heat produced in exothermal reaction in adiabatic conditions to sustain process until all substrates are transformed into product is one of the advantages of the method that result in low energy consumption and low cost combined with high efficiency. Different substrates were used to produce fine powders of ternary material. Phase compositions of obtained powder were examined by XRD method. Than selected powders were used for sintering in various temperature both in a presureless sintering and hot-pressing in argon atmosphere. Properties and phase composition of obtained products were examined.

scholarly journals Fabrication of Novel (Biopolymer Blend-Lead Oxide Nanoparticles) Nanocomposites: Structural and Optical Properties for Low-Cost Nuclear Radiation Shielding

2019 ◽  
Vol 64 (2) ◽  
pp. 157 ◽  
Author(s):  
A. Hashim ◽  
K.H.H. Al-Attiyah ◽  
S. F. Obaid
Keyword(s):  
Optical Properties ◽  
Lead Oxide ◽  
Optical Constants ◽  
Low Cost ◽  
Radiation Shielding ◽  
Nuclear Radiation ◽  
Oxide Nanoparticles ◽  
Energy Band Gap ◽  
Structural And Optical Properties ◽  
Attenuation Coefficients

Low-cost polymer nanocomposites prepared for the nuclear radiation shielding have highly linear attenuation coefficients, light weight, and elastic, good mechanical, optical, and dielectric properties. The carboxymethyl cellulose (CMC)–polyvinyl pyrrolidone (PVP) polymeric blend is prepared with concentrations: 60 wt.% CMC and 40 wt.% PVP. The lead oxide nanoparticles are added to the CMC–PVP blend with different concentrations: 0, 2, 4, 6, and 8 wt.%. The structural and optical properties of (CMC–PVP–PbO2) nanocomposites are studied. The results show that the absorbance of the (CMC–PVP) blend increases and the energy band gap decreases, as the concentration of PbO2 nanoparticles increases. The optical constants of the (CMC–PVP) blend increase with the concentration of lead oxide nanoparticles. The (CMC–PVP–PbO2) nanocomposites have highly linear attenuation coefficients for gamma radiation.

scholarly journals Hydrothermal synthesis of carbon nanodots from wine cork and biocompatible fluorescent probe

2021 ◽  
Author(s):  
Ngo Khoa Quang ◽  
Nguyen Ngoc Hieu ◽  
Vo Van Quoc Bao ◽  
Vo Thi Phuoc ◽  
Le Xuan Diem Ngoc ◽  
...  
Keyword(s):  
Stem Cells ◽  
Hydrothermal Synthesis ◽  
Low Cost ◽  
Average Diameter ◽  
Optical Measurements ◽  
Carbon Nanodots ◽  
Structural And Optical Properties ◽  
Simple Method ◽  
Fluorescent Image ◽  
Potential Applications

We presented a low-cost and simple method to synthesize carbon nanodots (CDs) from waste wine cork using hydrothermal synthesis.  The structural and optical properties of the CDs are characterized by TEM, FTIR, Raman, UV-Vis absorption, and photoluminescence (PL) spectra. The analysis results indicated the average diameter of CDs ⁓ 6.2 ± 2.7 nm. Optical measurements showed the phenomenon of excitation-dependent PL and the formation of functional groups on the surface of the particles. CDs with a quantum yield of 1.54% was calculated using quinine sulfate as reference. Furthermore, a probe of wine cork-derived CDs in bioimaging has been successfully applied in living mesenchymal stem cells (MSCs). After treatment with CDs, MSCs exhibited fluorescence including green, yellow, and red colors under the excitation wavelengths in the range 330–385 nm, 450–480 nm, and 510–550 nm, respectively. The achievement demonstrated potential applications of fluorescent CDs in the field of the fluorescent image.

scholarly journals Synthesis and characterization of high-efficiency low-cost solar cell thin film

2019 ◽  
Vol 37 (1) ◽  
pp. 127-135 ◽  
Author(s):  
W. Christopher Immanuel ◽  
S. Paul Mary Deborrah ◽  
S.S.R. Inbanathan ◽  
D. Nithyaa Sree
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solar Cell ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Uv Spectroscopy ◽  
Low Cost ◽  
Vital Role ◽  
Electrical And Optical Properties ◽  
Group Ii Vi Semiconductors

AbstractPolycrystalline chalcogenide semiconductors play a vital role in solar cell applications due to their outstanding electrical and optical properties. Among the chalcogenide semi-conductors, CdZnS is one kind of such important material for applications in various modern solid state devices such as solar cells, light emitting diode, detector etc. Due to their applications in numerous electro-optic devices, group II-VI semiconductors have been studied extensively. In recent years, major attention has been given to the study of electrical and optical properties of CdZnS thin films. In this work, Cd1−xZnxS thin films were prepared by chemical bath deposition technique. Phase purity and surface morphology properties were analyzed using field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD) studies. Chemical composition was studied using energy dispersive spectrophotometry (EDS). Optical band gap property was investigated using UV-Spectroscopy. Electrical conductivity studies were performed by two probe method and thermoelectric power setup (TEP) to determine the type of the material. This work reports the effect of Zn on structural, electrical, microstructural and optical properties of these films.

Influences of Stirring Speed and Post Annealing Temperature on the Properties of Zinc Oxide Colloid Prepared by Sol-Gel Spin Coating Method

2016 ◽  
Vol 701 ◽  
pp. 159-163 ◽  
Author(s):  
Sheen Jeff Teh ◽  
Yew Keong Sin ◽  
Kah Yoong Chan ◽  
Nisha Kumari Devaraj
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Spin Coating ◽  
Annealing Temperature ◽  
Low Cost ◽  
Sol Gel ◽  
Structural And Optical Properties ◽  
Post Annealing ◽  
Wide Range ◽  
Post Annealing Temperature

Zinc oxide (ZnO) colloid has drawn significant attention recently due to its wide range of potential applications such as photonic crystals, solar cells, sensors, and other optical devices. In this work, low cost sol-gel spin coating technique was employed to synthesis ZnO colloid. The influences of stirring speed and post annealing temperature on the properties of ZnO colloid was investigated. The structural and optical properties of ZnO colloid was characterized using field-emission scanning electron microscopy (FESEM) and ultraviolet-visible (UV-Vis) spectrophotometer, respectively. Subsequently, Tauc method was used to estimate the optical band gap of the ZnO colloid based on the optical transmittance data. The effects of the stirring speed and post annealing temperature on the structural and optical properties of ZnO colloid are revealed and discussed in this paper. It was found that ZnO colloid prepared by the stirring speed of 500rpm and 400°C post annealing temperature demonstrates the best dispersity quality of colloid system.

Computational studies on the structural, electronic and optical properties of graphene-like MXenes (M2CT2, M = Ti, Zr, Hf; T = O, F, OH) and their potential applications as visible-light driven photocatalysts

2016 ◽  
Vol 4 (33) ◽  
pp. 12913-12920 ◽  
Author(s):  
Haijun Zhang ◽  
Guang Yang ◽  
Xueqin Zuo ◽  
Huaibao Tang ◽  
Qun Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
High Efficiency ◽  
Computational Studies ◽  
Computational Results ◽  
Electronic And Optical Properties ◽  
Potential Applications ◽  
Visible Light Driven ◽  
Great Possibility

Our computational results suggest the great possibility of utilizing functionalized MXene materials as high-efficiency visible-light-driven photocatalysts.

Surface effects on optical and electrical properties of ZnO nanostructures

2010 ◽  
Vol 82 (11) ◽  
pp. 2055-2073 ◽  
Author(s):  
Cheng-Ying Chen ◽  
Ming-Wei Chen ◽  
Jr-Jian Ke ◽  
Chin-An Lin ◽  
José R. D. Retamal ◽  
...  
Keyword(s):  
High Efficiency ◽  
Surface Effect ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Surface Effects ◽  
Industrial Applications ◽  
Zno Nanostructures ◽  
New Class ◽  
Potential Applications ◽  
Sensitized Solar Cells

This article presents a comprehensive review of the current research addressing the surface effects on physical properties and potential applications of nanostructured ZnO. Studies illustrating the transport, photoluminescence (PL), and photoconductivity properties of ZnO with ultrahigh surface-to-volume (S/V) ratio are reviewed first. Secondly, we examine recent studies of the applications of nanostructured ZnO employing the surface effect on gas/chemical sensing, relying on a change of conductivity via electron trapping and detrapping process at the surfaces of nanostructures. Finally, we comprehensively review the photovoltaic (PV) application of ZnO nanostructures. The ultrahigh S/V ratios of nanostructured devices suggest that studies on the synthesis and PV properties of various nanostructured ZnO for dye-sensitized solar cells (DSSCs) offer great potential for high efficiency and low-cost solar cell solutions. After surveying the current literature on the surface effects on nano-structured ZnO, we conclude this review with personal perspectives on a few surface-related issues that remain to be addressed before nanostructured ZnO devices can reach their ultimate potential as a new class of industrial applications.

Influence of Support Structure on the Ultraviolet Photoluminescence Enhancement from Graphene/ZnO Hybrid Structures

2017 ◽  
Vol 748 ◽  
pp. 132-136
Author(s):  
Pei Chao Zhang ◽  
Ying Hui Zhou
Keyword(s):  
Optical Properties ◽  
High Efficiency ◽  
Optoelectronic Devices ◽  
Surface Structures ◽  
Hybrid Structures ◽  
Interfacial Coupling ◽  
Structural And Optical Properties ◽  
Light Emitting ◽  
Photoluminescence Enhancement ◽  
Photoluminescence Studies

Novel application of graphene combined with light emitting materials has been proposed recently due to the plasmonic effects of graphene. Here, we report our investigations on the structural and optical properties of two graphene/ZnO hybrid structures that fabricated based on different ZnO supports. Plasmon-enhanced ultraviolet photoluminescence has been observed from both samples. The combined Raman and photoluminescence studies suggest a strong interaction between ZnO and graphene, which is affected by the surface structures of ZnO. Our results develop insights about the influence of ZnO supports on the PL enhancement and interfacial coupling in graphene/ZnO hybrid structures, which provides a reference for the design and fabrication of optoelectronic devices with high efficiency.

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