Bubble template synthesis of CdLa2S4 hollow spheres/reduced graphene oxide nanocomposites as efficient and sustainable visible-light driven photocatalysts

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90321-90334 ◽  
Author(s):  
Lei Zhu ◽  
Won-Chun Oh

A hollow sphere CdLa2S4/reduced graphene oxide composite was successfully synthesized for the first time via a simple microwave assisted hydrothermal approach using bubbles generated from the decomposition of NH3H2O and Na2S2O3 in a domestic microwave within several minutes.

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7129-7138 ◽  
Author(s):  
Guijing Liu ◽  
Bo Wang ◽  
Lei Wang ◽  
Yuhe Yuan ◽  
Dianlong Wang

In this study, a 3D reduced graphene oxide modified CoS2 composite electrode (CoS2/RGO) is synthesized by a facile hydrothermal approach.


2015 ◽  
Vol 1737 ◽  
Author(s):  
Rebecca Isseroff ◽  
Zhenhua Yang ◽  
Jessica Kim ◽  
Andrew Chen ◽  
Miriam Rafailovich

ABSTRACTIn this study, an “inverted” design, phase-separated morphology and gold-functionalized reduced graphene oxide (Au-rGO) were used to address exciton recombination and poor Fermi level alignment. To increase efficiencies, a unique methodology was used to coat Au-rGO on top of the active layer. When 0.05 Au-rGO was blended with the active layer, there were metal-thiolate bonds with P3HT and π-π stacking with PCBM. However, KPFM, measured for the first time for this material, showed that the while 0.05mM Au-rGO reduced the energy gap between P3HT and PBCM, this was offset by recombination. KPFM showed that Au-rGO may be better suited between the active layer and electrode. When 0.5mM Au-rGO was coated on top of the active layer, efficiency increased (p<0.002) nearly 600%, suggesting that Au-rGO is a more effective acceptor than a constituent of the active layer.


2016 ◽  
Vol 09 (03) ◽  
pp. 1650051 ◽  
Author(s):  
Li Wang ◽  
Yantao Sun ◽  
Xiangxin Xue ◽  
Yujing Sun ◽  
Zhuang Li

We demonstrate here a facile and effective strategy to prepare reduced graphene oxide-platinum nanoparticle (RGO-PtNP) nanohybrids by the mediation of graphite-specific peptide (GSP). For the first time, we found that GSP can be used to modify RGO non-covalently in one way, and in another way promote the formation of PtNPs on RGO as a biomolecular bridge. The created RGO-PtNP nanohybrids show enhanced electrocatalytic activity toward H2O2 and can be utilized to fabricate non-enzymatic electrochemical H2O2 sensor.


2018 ◽  
Vol 42 (13) ◽  
pp. 10724-10732 ◽  
Author(s):  
S. Vinod Selvaganesh ◽  
P. Dhanasekaran ◽  
Raghuram Chetty ◽  
Santoshkumar D. Bhat

Schematic representing the formation of PEDOT–GO and further simultaneous deposition of Pt and exfoliation of GO to rGO and possible ORR mechanism.


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