Preparation and catalytic evaluation of Au/ γ-Al2O3nanoparticles for the conversion of 4-nitrophenol to 4-aminophenol by spectrophotometric metho

Farhat SAIRA; Naveeda FIRDOUS; Rumana QURESHI; Ayesha IHSAN

doi:https://doi.org/10.3906/kim-1910-21

Makale detayları

Preparation and catalytic evaluation of Au/ γ-Al2O3nanoparticles for the conversion of 4-nitrophenol to 4-aminophenol by spectrophotometric metho

Yazarlar:

Farhat SAIRA | Naveeda FIRDOUS | Rumana QURESHI | Ayesha IHSAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2020 Vol.44 Issue 2, pp.448-460

Belge Tipi:

Makale

Yayın Tarihi:

2/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000725446

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

DOI:

https://doi.org/10.3906/kim-1910-21

Özet:

 

A set of catalysts having gold nanoparticles deposited on γ-Al22_{2}O33_{3}    Au/ γ-Al2O3  with lowest effective amount of gold content were prepared by successive impregnation and hydrogen reduction method. The structural featuresof prepared catalysts were analysed byX-ray diffraction XRD , N2 physisorption, scanning electron microscopy  SEM , and Fourier transform infrared  FTIR . The catalytic activity was evaluated for the reduction of an organic pollutant 4-nitrophenol  4NP  to 4-aminophenol  4AP  by spectrophotometric analysis. Supported catalyst presented excellent catalytic ability to convert 4NP to 4AP in the presence of sodium borohydride  SBH  due to synergistic effect of Au NPs and mesoporous γ-Al22_{2}O33_{3} support. The reduction reaction was also performed at a range of temperatures to calculate kinetic parameters. The development of highly stable Au/γ-Al22_{2}O33_{3} catalysts with lowest noble metal content and recyclability made the process cost effective and may promote their applications in various fields including removal of organic pollutants in industrial waste water and high-temperature gas-phase reactions.

Makale detayları

Preparation and catalytic evaluation of Au/ γ-Al2O3nanoparticles for the conversion of 4-nitrophenol to 4-aminophenol by spectrophotometric metho

Yazarlar: Farhat SAIRA | Naveeda FIRDOUS | Rumana QURESHI | Ayesha IHSAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2020 Vol.44 Issue 2, pp.448-460

Belge Tipi: Makale

Yayın Tarihi: 2/2020

Belge Dili: İngilizce

Document ID (Org No.): 2000725446

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

DOI: https://doi.org/10.3906/kim-1910-21

Sayı

Yazarlar:

Farhat SAIRA | Naveeda FIRDOUS | Rumana QURESHI | Ayesha IHSAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2020 Vol.44 Issue 2, pp.448-460

Belge Tipi:

Makale

Yayın Tarihi:

2/2020

Belge Dili:

İngilizce

Document ID (Org No.):

2000725446

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

DOI:

https://doi.org/10.3906/kim-1910-21