scholarly journals Thermoelectric Properties of Reduced Graphene Oxide/Bi2Te3 Nanocomposites

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2430 ◽  
Author(s):  
Yong Du ◽  
Jia Li ◽  
Jiayue Xu ◽  
Per Eklund

Reduced graphene oxide (rGO)/Bi2Te3 nanocomposite powders with different contents of rGO have been synthesized by a one-step in-situ reductive method. Then, rGO/Bi2Te3 nanocomposite bulk materials were fabricated by a hot-pressing process. The effect of rGO contents on the composition, microstructure, TE properties, and carrier transportation of the nanocomposite bulk materials has been investigated. All the composite bulk materials show negative Seebeck coefficient, indicating n-type conduction. The electrical conductivity for all the rGO/Bi2Te3 nanocomposite bulk materials decreased with increasing measurement temperature from 25 °C to 300 °C, while the absolute value of Seebeck coefficient first increased and then decreased. As a result, the power factor of the bulk materials first increased and then decreased, and a power factor of 1340 μWm−1K−2 was achieved for the nanocomposite bulk materials with 0.25 wt% rGO at 150 °C.

2016 ◽  
Vol 18 (16) ◽  
pp. 11157-11167 ◽  
Author(s):  
Sachin Kumar ◽  
Animesh K. Ojha ◽  
Donfack Patrice ◽  
Brajesh S. Yadav ◽  
Arnulf Materny

The rGO–CeO2nanocomposite exhibited excellent photocatalytic activity under sunlight irradiation.


2016 ◽  
Vol 18 (18) ◽  
pp. 13126-13127 ◽  
Author(s):  
Sachin Kumar ◽  
Animesh K. Ojha ◽  
Donfack Patrice ◽  
Brajesh S. Yadav ◽  
Arnulf Materny

Correction for ‘One step in situ synthesis of CeO2 nanoparticles grown on reduced graphene oxide as an excellent fluorescent and photocatalyst material under sunlight irradiation’ by Animesh Kumar Ojha et al., Phys. Chem. Chem. Phys., 2015, DOI: 10.1039/c5cp04457j.


2016 ◽  
Vol 40 (6) ◽  
pp. 5473-5482 ◽  
Author(s):  
Qi Wang ◽  
Qian Wang ◽  
Musen Li ◽  
Sabine Szunerits ◽  
Rabah Boukherroub

The in situ synthesis of a reduced graphene oxide/Au nanoparticle composite for nonenzymatic H2O2 detection and nitrophenol reduction.


2015 ◽  
Vol 3 (38) ◽  
pp. 19461-19468 ◽  
Author(s):  
Sanjit Saha ◽  
Milan Jana ◽  
Pranab Samanta ◽  
Naresh Chandra Murmu ◽  
Tapas Kuila

In situ electro-deposition, reduction and functionalization of graphene oxide (GO) with sulfanilic acid azocromotrop (SAC) were carried out through a facile one-step electrochemical method.


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