Bismuth Vanadate Encapsulated with Reduced Graphene Oxide: A Nanocomposite for Optimized Photocatalytic Hydrogen Peroxide Generation

2021 ◽  
Author(s):  
Nikhil Dhabarde ◽  
Orlando Carrillo-Ceja ◽  
Siyu Tian ◽  
Guoping Xiong ◽  
Krishnan Raja ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Bismuth Vanadate ◽  
Reduced Graphene ◽  
Hydrogen Peroxide Generation

Bismuth Vanadate Encapsulated with Reduced Graphene Oxide for Hydrogen Peroxide Generation

2020 ◽  
Vol MA2020-02 (61) ◽  
pp. 3080-3080
Author(s):  
Nikhil Dhabarde ◽  
Siyu Tian ◽  
Guoping Xiong ◽  
Mano Misra ◽  
Vaidyanathan Subramanian
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Bismuth Vanadate ◽  
Reduced Graphene ◽  
Hydrogen Peroxide Generation

scholarly journals Efficient hydrogen peroxide generation using reduced graphene oxide-based oxygen reduction electrocatalysts

2018 ◽  
Vol 1 (4) ◽  
pp. 282-290 ◽  
Author(s):  
Hyo Won Kim ◽  
Michael B. Ross ◽  
Nikolay Kornienko ◽  
Liang Zhang ◽  
Jinghua Guo ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Hydrogen Peroxide Generation

Bismuth Vanadate Encapsulated with Reduced Graphene Oxide for Hydrogen Peroxide Generation

2020 ◽  
Author(s):  
Nikhil Dhabarde ◽  
Siyu Tian ◽  
Guoping Xiong ◽  
Mano Misra ◽  
Vaidyanathan Subramanian
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Value Added ◽  
Photogenerated Electron ◽  
Band Gap Energy ◽  
Bismuth Vanadate ◽  
Composite Catalyst ◽  
H2o2 Production ◽  
Reduced Graphene

Hydrogen peroxide (H2O2), a strong oxidant, is considered as a highly value-added chemical due to its diverse applications. The conventional process for H2O2 production currently pursued is energy intensive, using reactants of explosive nature, and involves using expensive catalysts. However, a photocatalytic H2O2 production is a sustainable and eco-friendly process, requiring mostly water, oxygen, and sunlight. The role of the photocatalyst is to provide electrons for the reduction of O2 and holes for the release of hydrogen ion in water. Bismuth vanadate (BVO), a semiconductor with a low band gap energy (~2.4 eV), is known to be a promising photocatalyst. Moreover, reduced graphene oxide is well-known for its role in promoting the separation and transport of charges, preventing the recombination of photogenerated electron−hole pairs. This study proposes a method of synthesizing a composite catalyst by functionalizing BVO, via the encapsulation with RGO and utilizing the composite for production of H2O2.

scholarly journals Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1372
Author(s):  
Mir Ghasem Hosseini ◽  
Vahid Daneshvari-Esfahlan ◽  
Hossein Aghajani ◽  
Sigrid Wolf ◽  
Viktor Hacker
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Fuel Cells ◽  
Reduced Graphene Oxide ◽  
Bimetallic Catalyst ◽  
Catalyst Activity ◽  
Open Circuit ◽  
Nitrogen Doped ◽  
Hydrazine Oxidation ◽  
Reduced Graphene

In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm−2 is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.

Cobalt Vanadium Oxide Supported on Reduced Graphene Oxide for the Oxidation of Styrene Derivatives to Aldehydes with Hydrogen Peroxide as Oxidant

Synlett ◽  
2018 ◽  
Vol 29 (16) ◽  
pp. 2181-2184 ◽  
Author(s):  
Xinhua Peng ◽  
Hui Zou ◽  
Chuanfeng Hu ◽  
Kaihao Chen ◽  
Guansheng Xiao
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Vanadium Oxide ◽  
Reduced Graphene Oxide ◽  
Excellent Performance ◽  
Environmental Friendliness ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Reduced Graphene ◽  
Styrene Derivatives

Cobalt vanadium oxide supported on reduced graphene oxide showed excellent performance in the oxidation of styrene derivatives to the corresponding aldehydes with hydrogen peroxide as oxidant. An electron-donating group at the para-position of the aromatic ring facilitates the formation of the corresponding aldehyde. Compared with conventional methods, the newly designed heterogeneous catalytic system offers a promising prospect because of its economic applicability and environmental friendliness.

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