Synthesis of Fe-Fe2B catalysts via solvothermal route for hydrogen generation by hydrolysis of NaBH4

Mustafa BARIŞ; Tuncay ŞİMŞEK; Hatice Taşkaya; Arun K. CHATTOPADHYAY

doi:https://doi.org/10.30728/boron.348291

Makale detayları

Synthesis of Fe-Fe2B catalysts via solvothermal route for hydrogen generation by hydrolysis of NaBH4

Yazarlar:

Mustafa BARIŞ | Tuncay ŞİMŞEK | Hatice Taşkaya | Arun K. CHATTOPADHYAY

Yayıncı:

TENMAK Bor Araştırma Enstitüsü

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Boron 2018 Vol.3 Issue 1, pp.51-62

Belge Tipi:

Makale

Yayın Tarihi:

3/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000705351

Sıklık:

Aylık

eISSN:

2667-8438

pISSN:

2149-9020

DOI:

https://doi.org/10.30728/boron.348291

Özet:

 





In this study, iron sulfate
heptahydrate (FeSO4.7H2O) and sodium borohydride (NaBH4)
were used to synthesize Fe-Fe2B nanocrystals
via the solvothermal route. Synthesis of Fe-Fe2B nanocrystals was
carried out under Argon (Ar) gas atmosphere with aqueous solutions of FeSO4.7H2O
and NaBH4 at various concentrations and reaction time. The phases
and microstructures of nanocrystals thus formed were characterized by X-Ray
diffraction (XRD) spectroscopy and scanning electron microscopy (SEM). Surface
areas of nanocrystals were measured by a surface area and pore-size analyzer using
nitrogen adsorption-desorption method together with Brunauer-Emmett-Teller
(BET) equation. The vacuum dried nanoparticles were calcined under both Ar and
air at 500 ºC. Nano-cylindrical structures Fe-Fe2B were observed
while calcinating under Ar atmosphere; whereas more irregular shaped particles
were obtained by calcination under air. The surface areas of nanocylinders were
determined as 12 m2/g, 5.5 m2/g and 16.5 m2/g,
for vacuum dried, Ar-calcined and O2-calcined products respectively.
The catalytic effect of those nanocrystals for hydrogen generation were studied
by determining reaction rates in aqueous alkaline solutions of NaBH4.
Their catalytic activities were investigated by varying the amount of
catalysts, and the concentrations of NaBH4 and NaOH. The effect of
temperature on the catalytic activity was also studied by varying the temperatures
from 25-70 °C. It was noticed that the catalytic activity of vacuum dried
nanocrystals was the highest, and it decreased with the increase in NaOH
concentration. With 0.01 g of Fe-Fe2B
catalyst in 1 % w/w NaBH4 concentration at 25 °C, the hydrogen
production rate was 570 mL of H2.g-1.m-1,
which reached to 1230 at 50 °C and
2700 mL at 70 °C.  




.

Makale detayları

Synthesis of Fe-Fe2B catalysts via solvothermal route for hydrogen generation by hydrolysis of NaBH4

Yazarlar: Mustafa BARIŞ | Tuncay ŞİMŞEK | Hatice Taşkaya | Arun K. CHATTOPADHYAY

Yayıncı: TENMAK Bor Araştırma Enstitüsü

Ana Başlıklar: Uygulamalı fizik

Dergi: Journal of Boron 2018 Vol.3 Issue 1, pp.51-62

Belge Tipi: Makale

Yayın Tarihi: 3/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000705351

Sıklık: Aylık

eISSN: 2667-8438

pISSN: 2149-9020

DOI: https://doi.org/10.30728/boron.348291

Sayı

Yazarlar:

Mustafa BARIŞ | Tuncay ŞİMŞEK | Hatice Taşkaya | Arun K. CHATTOPADHYAY

Yayıncı:

TENMAK Bor Araştırma Enstitüsü

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Journal of Boron 2018 Vol.3 Issue 1, pp.51-62

Belge Tipi:

Makale

Yayın Tarihi:

3/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000705351

Sıklık:

Aylık

eISSN:

2667-8438

pISSN:

2149-9020

DOI:

https://doi.org/10.30728/boron.348291