Role of O and Se defects in the thermoelectric properties of bismuth oxide selenide

2016 ◽  
Vol 120 (19) ◽  
pp. 195105 ◽  
Author(s):  
Tran Van Quang ◽  
Miyoung Kim
Keyword(s):  
Thermoelectric Properties ◽  
Bismuth Oxide

scholarly journals The Role of H2C2O4 and Na2CO3 as Precipitating Agents on The Physichochemical Properties and Photocatalytic Activity of Bismuth Oxide

2020 ◽  
Vol 18 (1) ◽  
pp. 129-137
Author(s):  
Yayuk Astuti ◽  
Rizka Andianingrum ◽  
Abdul Haris ◽  
Adi Darmawan ◽  
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Physicochemical Properties ◽  
Bismuth Oxide ◽  
Rate Constants ◽  
Degradation Rate ◽  
Precipitation Method ◽  
Methyl Orange Degradation ◽  
Methyl Orange Dye

AbstractSynthesis of bismuth oxide synthesis through the precipitation method using H2C2O4 and Na2CO3 precipitating agents, identification of physicochemical properties and its photocatalysis activity for methyl orange degradation were conducted. The bismuth oxide synthesis was undertaken by dissolving Bi(NO3)3.5H2O in HNO3, then added precipitating agents to form precipitate. The results showed that bismuth oxide produced by H2C2O4 precipitating agent was a yellow powder containing a mixture of α-Bi2O3 (monoclinic) and β-Bi2O3 (tetragonal), porous with size of 28-85 μm. Meanwhile, the use of Na2CO3 as precipitating agent resulted in bismuth oxide consisting of α-Bi2O3 and β-Bi2O3 and Bi2O4, irregular shape without pore being 40-115 μm in size. Bismuth oxide synthesized with H2C2O4 precipitating agent showed higher photocatalytic activity compared to bismuth oxide synthesized using Na2CO3 on degrading methyl orange dye with degradation rate constants of 2.35x10-5 s-1 for H2C2O4 and 1.81x10-5 s-1 for Na2CO3.

Role of Bi doping in thermoelectric properties of CaMnO3

2015 ◽  
Vol 628 ◽  
pp. 347-351 ◽  
Author(s):  
Rezaul Kabir ◽  
Ruoming Tian ◽  
Tianshu Zhang ◽  
Richard Donelson ◽  
Thiam Teck Tan ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Bi Doping

Shielding behavior and structural role of bismuth oxide in ternary bismuth lead borate glass

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Noha Kattaya ◽  
Amr Abdelghany ◽  
Mahrous Meikhail ◽  
Osama Hemeda ◽  
Mohamed Ali
Keyword(s):  
Bismuth Oxide ◽  
Borate Glass ◽  
Lead Borate ◽  
Structural Role ◽  
Bismuth Lead

A possible role of chemical reduction in the memory switching process of bismuth oxide glasses

1984 ◽  
Vol 57 (3) ◽  
pp. 333-338 ◽  
Author(s):  
C. A. HOGARTH ◽  
A. B. GLOT ◽  
RAVISHANKAR HARANI
Keyword(s):  
Bismuth Oxide ◽  
Chemical Reduction ◽  
Switching Process ◽  
Oxide Glasses ◽  
Memory Switching

scholarly journals The Role of Ordering on the Thermoelectric Properties of Blends of Regioregular and Regiorandom Poly(3‐hexylthiophene)

2019 ◽  
Vol 5 (11) ◽  
pp. 1800915 ◽  
Author(s):  
Eunhee Lim ◽  
Anne M. Glaudell ◽  
Rachel Miller ◽  
Michael L. Chabinyc
Keyword(s):  
Thermoelectric Properties

Distinct role of Sn and Ge doping on thermoelectric properties in p-type (Bi, Sb)2Te3-alloys

2020 ◽  
Vol 292 ◽  
pp. 121722
Author(s):  
Zhengkai Zhang ◽  
Yu Cao ◽  
Qirui Tao ◽  
Yonggao Yan ◽  
Xianli Su ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
P Type ◽  
Ge Doping ◽  
Distinct Role

scholarly journals Thermoelectric Properties of Sb-S System Compounds from DFT Calculations

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4707
Author(s):  
Hailong Yang ◽  
Pascal Boulet ◽  
Marie-Christine Record
Keyword(s):  
Seebeck Coefficient ◽  
Thermoelectric Properties ◽  
Electronic Structures ◽  
Density Functional ◽  
Lattice Thermal Conductivity ◽  
Dimensional Structure ◽  
Functional Theory ◽  
One Dimensional ◽  
Shed Light

By combining density functional theory, quantum theory of atoms in molecules and transport properties calculations, we evaluated the thermoelectric properties of Sb-S system compounds and shed light on their relationships with electronic structures. The results show that, for Sb2S3, the large density of states (DOS) variation induces a large Seebeck coefficient. Taking into account the long-range weak bonds distribution, Sb2S3 should exhibit low lattice thermal conductivity. Therefore, Sb2S3 is promising for thermoelectric applications. The insertion of Be atoms into the Sb2S3 interstitial sites demonstrates the electrical properties and Seebeck coefficient anisotropy and sheds light on the understanding of the role of quasi-one-dimensional structure in the electron transport. The large interstitial sites existing in SbS2 are at the origin of phonons anharmonicity which counteracts the thermal transport. The introduction of Zn and Ga atoms into these interstitial sites could result in an enhancement of all the thermoelectric properties.

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