Eco-friendly and facilely prepared silica modified amorphous titania (TiO2–SiO2) electrocatalyst for the O2 and H2 evolution reactions

2015 ◽  
Vol 5 (11) ◽  
pp. 5016-5022 ◽  
Author(s):  
R. Venkatkarthick ◽  
D. J. Davidson ◽  
S. Ravichandran ◽  
S. Vengatesan ◽  
G. Sozhan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Preparation Procedure ◽  
H2 Evolution ◽  
Bifunctional Electrocatalyst ◽  
Amorphous Titania ◽  
Hydrogen Evolution Reactions

A silica modified amorphous titania (TiO2–SiO2) electrocatalyst was prepared by a simple, cheap, and scalable preparation procedure. The catalyst is active in the oxygen and hydrogen evolution reactions, leading to a promising bifunctional electrocatalyst.

Aminophenyl-substituted cobalt(iii) corrole: a bifunctional electrocatalyst for the oxygen and hydrogen evolution reactions

2019 ◽  
Vol 48 (30) ◽  
pp. 11345-11351 ◽  
Author(s):  
Amit Kumar ◽  
Sujesh S ◽  
Prachi Varshney ◽  
Amit Paul ◽  
Sankar Jeyaraman
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Bifunctional Electrocatalyst ◽  
Hydrogen Evolution Reactions

Herein, a bifunctional A2B-type cobalt(iii) corrole having electron withdrawing meso-pentafluorophenyl and basic meso-p-aminophenyl substituents is reported, which exhibits excellent catalytic activity towards both the oxygen and hydrogen evolution reactions.

Tungsten-coated nano-boron carbide as a non-noble metal bifunctional electrocatalyst for oxygen evolution and hydrogen evolution reactions in alkaline media

Nanoscale ◽  
2017 ◽  
Vol 9 (48) ◽  
pp. 19176-19182 ◽  
Author(s):  
Yan Zhang ◽  
Yanhui Wang ◽  
Chan Han ◽  
Shaopei Jia ◽  
Shuyu Zhou ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Hydrogen Evolution ◽  
Oxygen Evolution ◽  
Noble Metal ◽  
Plasma Coating ◽  
Alkaline Media ◽  
Bifunctional Electrocatalyst ◽  
Spark Plasma ◽  
Hydrogen Evolution Reactions

Herein, tungsten-coated nano-boron carbide (W-WB4-WCx/B4C) particles were prepared by heating a mixture of B4C and W powder using a spark plasma coating (SPC) method.

scholarly journals In Situ Formation of Surface-Induced Oxygen Vacancies in Co9S8/CoO/NC as a Bifunctional Electrocatalyst for Improved Oxygen and Hydrogen Evolution Reactions

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2237
Author(s):  
Khalil ur Rehman ◽  
Shaista Airam ◽  
Xiangyun Lin ◽  
Jian Gao ◽  
Qiang Guo ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxygen Vacancies ◽  
Cost Effective ◽  
Bifunctional Electrocatalyst ◽  
Catalytic Activities ◽  
Oxygen Defects ◽  
Hydrogen Evolution Reactions ◽  
Nitrogen Doped Carbon ◽  
Coo Nanoparticles

Creating oxygen vacancies and introducing heterostructures are two widely used strategies in Co-based oxides for their efficient electrocatalytic performance, yet both strategies have rarely been used together to design a bifunctional electrocatalyst for an efficient overall water splitting. Herein, we propose a facile strategy to synthesize oxygen-defect-rich Co9S8/CoO hetero-nanoparticles with a nitrogen-doped carbon shell (ODR-Co9S8/CoO/NC) through the in situ conversion of heterojunction along with surface-induced oxygen vacancies, simply via annealing the precursor Co3S4/Co(OH)2/ZIF-67. The as-prepared ODR-Co9S8/CoO/NC shows excellent bifunctional catalytic activities, featuring a low overpotential of 217 mV at 10 mA cm−2 in the oxygen evolution reaction (OER) and 160 mV at 10 mA cm−2 in the hydrogen evolution reaction (HER). This performance excellency is attributed to unique heterostructure and oxygen defects in Co9S8/CoO nanoparticles, the current work is expected to offer new insights to the design of cost-effective, noble-metal-free electrocatalysts.

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