scholarly journals Luminescence Properties of ZnS Nanoparticles and Porous Nanospheres Synthesized via Co-Precipitation and Hydrothermal Route

2011 ◽  
Vol 9 ◽  
pp. 521-525 ◽  
Author(s):  
Nguyen Tri Tuan ◽  
Nguyen-Duc Trung-Kien ◽  
Pham Thanh Huy ◽  
Nguyen Huyen Tung
Keyword(s):  
Luminescence Properties ◽  
Zns Nanoparticles ◽  
Hydrothermal Route ◽  
Co Precipitation

Iron Nanoparticles Coated with Nanostructured Carbon: Synthesis and Application in Glucose Biosensors

2017 ◽  
Vol 899 ◽  
pp. 216-220
Author(s):  
R.L. Roman ◽  
J.P.Z. Gonçalves ◽  
S.C. Fernandes ◽  
Lucinao Luiz Silva ◽  
J. Dal Magro ◽  
...  
Keyword(s):  
Glucose Biosensor ◽  
Performance Evaluations ◽  
Carbon Paste ◽  
Hydrothermal Route ◽  
Sensor Performance ◽  
Carbon Coated ◽  
New Type ◽  
Co Precipitation ◽  
Paste Electrode ◽  
Oxidation Of Glucose

Nanowires of carbon coated ferric oxide (Fe2O3/C) have been studied to be applied at an electrochemical glucose biosensor as a new type of carbon paste electrode (CPE) modifier. The Fe2O3/C was synthesized by adapting co-precipitation hydrothermal route. Firstly, amperometric sensor based on a modified CPE doped with Fe2O3 has been developed and compared with CPE doped with Fe2O3/C for hydrogen peroxide (H2O2) determination. The performance evaluations for the modified materials and sensors were studied in detail through cyclic voltammetry (CV) method. After, the electrochemical sensor performance was also evaluated for glucose oxidase (GOx) response biosensor due to considerable interest in the blood sugar control. The results demonstrate that the GOx retains its biocatalytic activity toward the oxidation of glucose and that the bioelectrode modified by the Fe2O3/C matrix has potential for use in biosensors and other bioelectronics devices.

Fabrication and Luminescence Properties of CaMoO4:Eu3+ Red Phosphors for White LED

2010 ◽  
Vol 663-665 ◽  
pp. 441-444
Author(s):  
Zhen Hua Liang ◽  
Yu Zhi Feng ◽  
Xiao Xia Liu ◽  
Gui Hua Peng
Keyword(s):  
Luminescent Properties ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
White Led ◽  
Doping Amount ◽  
Red Phosphors ◽  
Co Precipitation ◽  
The Relationship

CaMoO4: Eu3+ red phosphors were synthesized by co-precipitation method with H3BO3 as an additive and the relationship between H3BO3 doping amount and luminescent properties were studied. The brightness increased with increasing H3BO3 amount, the brightness of the CaMoO4: Eu3+ powder with 10 mol％ H3BO3 was 3.2 times higher than that of the phosphor without H3BO3.

Electromagnetic interference shielding study in microwave and NIR regions by highly efficient Ag/ZnS and polyaniline-Ag/ZnS particles

2021 ◽  
pp. 089270572110649
Author(s):  
Muhammad Zahid ◽  
HM Fayzan Shakir ◽  
Zulfiqar Ahmad Rehan
Keyword(s):  
Electromagnetic Interference ◽  
Near Infrared ◽  
Oxidative Polymerization ◽  
Composite Films ◽  
Nir Spectroscopy ◽  
Infrared Region ◽  
Nanocomposite Films ◽  
Emi Shielding ◽  
Zns Nanoparticles ◽  
Co Precipitation

The chemical oxidative polymerization and co-precipitation methods were employed for the preparations of polyaniline (PANI) and silver-doped zinc sulfide (ZnS) nanoparticles to be used for electromagnetic interference (EMI) shielding. PVC-based composite films were fabricated by the incorporation of Ag/ZnS and PANI-Ag/ZnS nanoparticles. These nanoparticles were first analyzed by X-ray diffraction and zetasizer for their crystal structure and particle size. Prepared nanocomposite films were then analyzed for various properties like electrical conductivity, transmission in the near-infrared region (700 nm to 2500 nm), and EMI shielding efficiency in the microwave region (0.1 GHz to 20 GHz). These parameters were characterized by DC Conductivity, NIR spectroscopy, and vector network analyzer. It was found that with the addition of the concentration of nanoparticles, both values of conductivity and shielding efficiency improved. The highest attenuation value in 0.1 to 20 GHz reached 52.5 dB in 0.1 to 20 GHz frequency for 20 wt% PANI-Ag/ZnS and < 0.5% transmission was evaluated in the NIR region.

Co-precipitation Synthesis and Luminescence Properties of Na2TiF6∶Mn4+Red Phosphors for Warm White Light Emitting Diodes

2015 ◽  
Vol 36 (12) ◽  
pp. 1402-1408 ◽  
Author(s):  
罗 洋 LUO Yang ◽  
江建青 JIANG Jian-qing ◽  
侯得健 HOU De-jian ◽  
游维雄 YOU Wei-xiong ◽  
叶信宇 YE Xin-yu
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Red Phosphors ◽  
Warm White Light ◽  
Precipitation Synthesis ◽  
Co Precipitation ◽  
White Light Emitting Diodes

Optimized luminescence properties of Mn doped ZnS nanoparticles for photovoltaic applications

2013 ◽  
Vol 113 (1) ◽  
pp. 014903 ◽  
Author(s):  
Alessia Le Donne ◽  
Sourav Kanti Jana ◽  
Sangam Banerjee ◽  
Sukumar Basu ◽  
Simona Binetti
Keyword(s):  
Luminescence Properties ◽  
Zns Nanoparticles ◽  
Photovoltaic Applications ◽  
Mn Doped

scholarly journals Post annealing induced manipulation of phase and upconversion luminescence of Cr3+ doped NaYF4:Yb,Er crystals

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9364-9372 ◽  
Author(s):  
Shivanand H. Nannuri ◽  
Suresh D. Kulkarni ◽  
Subash C. K. ◽  
Santhosh Chidangil ◽  
Sajan D. George
Keyword(s):  
Upconversion Luminescence ◽  
Ion Concentration ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
Post Annealing ◽  
Co Precipitation

Co-dopant (Cr3+ ion) concentration as well as post annealing found to change the structural as well as luminescence properties of Cr3+ ion doped NaY80%F4:Yb17%,Er3% prepared via a co-precipitation method.

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