Synthesis of Na-, Fe-, and Co-promoted TiO2/multiwalled carbon nanotube composites and their use as a photocatalyst

Alp YÜRÜM; Gürkan KARAKAŞ

Makale detayları

Synthesis of Na-, Fe-, and Co-promoted TiO2/multiwalled carbon nanotube composites and their use as a photocatalyst

Yazarlar:

Alp YÜRÜM | Gürkan KARAKAŞ

Yayıncı:

TUBITAK

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Turkish Journal of Chemistry 2017 Vol.41 Issue 3, pp.440-454

Belge Tipi:

Makale

Yayın Tarihi:

5/2017

Belge Dili:

İngilizce

Document ID (Org No.):

2000726415

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

The use of multiwalled carbon nanotubes (CNTs) in sol-gel synthesized   titanium dioxide (TiO2)2)_{2}) photocatalysts as templates was systematically   studied. CNTs have high oxidative thermal stability and the controlled   removal of CNTs can be achieved at lower temperatures under air flow by the   use of Na, Fe, and Co as a catalyst. These catalysts helped to reduce the   oxidation temperature of CNTs; thus anatase phase was achieved without   significant sintering. The use of a promoter, heat treatment, and various   heat treatment atmospheres was effective in specific surface area,   crystallinity, and photocatalytic activity against methylene blue (MB)   degradation. While the specific surface area of bare TiO22_{2} was 22   m22^{2}/g, after templating surface areas as high as 191 m22^{2}/g were   obtained. For the photocatalytic characterization, with bare TiO22_{2}, the   rate constant for MB decomposition was 0.81 h−1−1^{-1}, and for CNT-TiO22_{2}   it was 1.31 h−1−1^{-1}. Moreover, after Na promotion, the rate constant   increased to 1.85 h−1−1^{-1}. The results showed that CNTs can be used as a   template to tailor and improve the textural properties. Moreover, as a novel   material, the Na promotion in CNT-TiO22_{2} samples showed the best   photocatalytic activity by enhancing the interaction between TiO22_{2} and   CNT surfaces.

Makale detayları

Synthesis of Na-, Fe-, and Co-promoted TiO2/multiwalled carbon nanotube composites and their use as a photocatalyst

Yazarlar: Alp YÜRÜM | Gürkan KARAKAŞ

Yayıncı: TUBITAK

Ana Başlıklar: Uygulamalı fizik

Dergi: Turkish Journal of Chemistry 2017 Vol.41 Issue 3, pp.440-454

Belge Tipi: Makale

Yayın Tarihi: 5/2017

Belge Dili: İngilizce

Document ID (Org No.): 2000726415

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Alp YÜRÜM | Gürkan KARAKAŞ

Yayıncı:

TUBITAK

Ana Başlıklar:

Uygulamalı fizik

Dergi:

Turkish Journal of Chemistry 2017 Vol.41 Issue 3, pp.440-454

Belge Tipi:

Makale

Yayın Tarihi:

5/2017

Belge Dili:

İngilizce

Document ID (Org No.):

2000726415

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527