A highly sustainable hydrothermal synthesized MnO2 as cathodic catalyst in solar photocatalytic fuel cell

Chemosphere ◽  
2021 ◽  
Vol 263 ◽  
pp. 128212
Author(s):  
Yong-Por Ong ◽  
Li-Ngee Ho ◽  
Soon-An Ong ◽  
Johar Banjuraizah ◽  
Abdul Haqi Ibrahim ◽  
...  
2021 ◽  
Vol 881 ◽  
pp. 114940
Author(s):  
Izabela Campos Sena ◽  
Davi de Oliveira Sales ◽  
Tatiana Santos Andrade ◽  
Mariandry Rodriguez ◽  
Adilson Cândido da Silva ◽  
...  

2018 ◽  
Vol 25 (35) ◽  
pp. 35164-35175 ◽  
Author(s):  
Wan Fadhilah Khalik ◽  
Li-Ngee Ho ◽  
Soon-An Ong ◽  
Chun-Hong Voon ◽  
Yee-Shian Wong ◽  
...  

2021 ◽  
Vol 65 (1) ◽  
Author(s):  
D. M. López-Rosas ◽  
R.M. Félix-Navarro ◽  
J. R. Flores-Hernández ◽  
C. Silva-Carrillo ◽  
I. L. Albarrán-Sánchez ◽  
...  

Abstract. This work reports the synthesis, characterization, and catalytic activity of Pt-Ni/CNT with a low platinum load to use as cathode electrocatalyst in PEMFC (proton-exchange membrane fuel cells). The synthesis of nickel particles on the carbon nanotubes surface was carried out by chemical reduction of a Ni(ethylenediamine) complex; after that, the galvanic displacement reaction was performed to platinum deposition onto Ni/CNT. The Pt-Ni/CNT was deposited by spray technique on a gas diffuser layer (GDL) and subsequently subjected to several potential cycles to promote Ni atoms migration. Finally, its catalytic activity was evaluated in a fuel cell.   Resumen. En este trabajo, se reporta la síntesis, caracterización y evaluación catalítica del electrocatalizador Pt-Ni/CNT con bajo contenido de platino, empleado como electrocatalizador catódico en una celda de combustible tipo PEMFC (Celda de combustible de membrana de intercambio protónico). La síntesis de las partículas de níquel sobre la superficie de los nanotubos de carbono se llevó a cabo mediante la reducción química del complejo de Ni(etilendiamina) y posteriormente, se depositó platino sobre el material Ni/CNT mediante la reacción de desplazamiento galvánico. Se depositó una película de Pt-Ni/CNT sobre un difusor de gas mediante la técnica de esprayado y posteriormente fue sometido a diversos ciclos de potencial para promover la migración de los átomos de níquel y evaluar su actividad catalítica en una celda de combustible.


Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 210
Author(s):  
Dong Liu ◽  
Chunling Li ◽  
Congyue Zhao ◽  
Er Nie ◽  
Jianqiao Wang ◽  
...  

TiO2 develops a higher efficiency when doping Bi into it by increasing the visible light absorption and inhibiting the recombination of photogenerated charges. Herein, a highly efficient Bi doped TiO2 photoanode was fabricated via a one-step modified sol-gel method and a screen-printing technique for the anode of photocatalytic fuel cell (PFC). A maximum degradation rate of 91.2% of Rhodamine B (RhB) and of 89% after being repeated 5 times with only 2% lost reflected an enhanced PFC performance and demonstrated an excellent stability under visible-light irradiation. The excellent degradation performance was attributed to the enhanced visible-light response and decreased electron-hole recombination rate. Meanwhile, an excellent linear correlation was observed between the efficient photocurrent of PFC and the chemical oxygen demand of solution when RhB is sufficient.


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