electrocatalytic activity
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Catalysts ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 49
Siraprapa Pitiphattharabun ◽  
Nicha Sato ◽  
Gasidit Panomsuwan ◽  
Oratai Jongprateep

Although barium titanate (BaTiO3) shows prominent dielectric properties for fabricating electronic devices, its utilization in electrochemical applications is limited. Thus, this study examined the potential of a BaTiO3-based composite in the detection of a food additive, i.e., citric acid. First, a submicron-scale BaTiO3 powder was synthesized using the solution combustion method. Then, a BaTiO3/multiwalled carbon nanotube (MWCNT) composite was hydrothermally synthesized at BaTiO3:MWCNT mass ratios of 1:1 and 2:1. This composite was used as a working electrode in a nonenzymatic sensor to evaluate its electrocatalytic activity. Cyclic voltammetric measurements revealed that the BaTiO3/MWCNT composite (2:1) exhibited the highest electrocatalytic activity. Reduction reactions were observed at applied voltages of approximately 0.02 and −0.67 V, whereas oxidation reactions were detected at −0.65 and 0.47 V. With acceptable sensitivity, decent selectivity, and fair stability, the BaTiO3/MWCNT composite (2:1) showed good potential for citric acid detection.

2022 ◽  
Chandrashekar Yellaturu ◽  
Raghavendra P ◽  
Thulasi Ramaiah Gondi ◽  
Sravani Bathinapatla ◽  
Sri Chandana Panchangam ◽  

Stable and efficient electrocatalysts capable of oxidizing formic acid molecule is highly required to realize direct formic acid fuel cells (DFACs) as promising energy conversion sources. Herein, electrocatalytic activity of...

Balasingh Thangadurai Jebaslinhepzybai ◽  
Elavarasan Samaraj ◽  
Thangaian Kesavan ◽  
Manickam Sasidharan ◽  
J. Arockia Selvi

Hybrid polyoxometalate derived in situ carbon encapsulated molybdenum phosphide (HPOM-MoP/C) exhibits excellent HER activity in a wide pH range.

Doyeub Kim ◽  
Imdadullah Thaheem ◽  
Hyeongmin Yu ◽  
Jeong Hwa Park ◽  
Kang Taek Lee

Solid oxide cells (SOCs) allow the eco-friendly and direct conversion between chemical energies (e.g., hydrogen) and electric power, effectively mitigating the environmental issues associated with excessive fossil fuel consumption. Herein,...

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