Change search
ReferencesLink to record
Permanent link

Direct link
Photocatalytic degradation of indigo carmine using [Zn-Al] LDH supported on PAN nanofibres
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.
Show others and affiliations
2015 (English)In: Clay minerals, ISSN 0009-8558, E-ISSN 1471-8030, Vol. 50, no 2, 185-197 p.Article in journal (Refereed) Published
Abstract [en]

Zn-Al layered double hydroxides (LDH), before and after calcination, were tested for the removal of indigo carmine (IC) dye from solution. These LDH photocatalysts were characterized by powder x-ray diffraction (PXRD), Fourier transform infrared (FTIR) spectroscopy, thermogravimetry/differential thermogravimetry (TG/DTG), nitrogen physisorption at -196 degrees C, scanning electron microscopy (SEM) and diffuse reflectance spectrophotometry (DRS). The different photocatalysts were supported on polyacrylonitrile (PAN) nanofibres, so that filtration was unnecessary. The PXRD and FTIR analyses showed that the IC adsorption on c-Zn-Al-3-500 (LDH calcined at 500 degrees C) was enhanced by construction of the hydrotalcite matrix intercalated with the dye. The intercalation was clearly evidenced by the appearance of a peak at low degrees 2 theta values. All of the materials prepared exhibited photocatalytic activity, which for the c-Zn-Al-3-500 was comparable to that of commercial PAN-supported ZnO nanoparticles (100% degradation after 180 min). Kinetic studies showed that the degradation of the IC followed a pseudo-first order rate. The high activity and the ease of both synthesis and separation processes rendered this photocatalyst a promising candidate for environmental remediation.

Place, publisher, year, edition, pages
[Abderrazek, K.; Srasra, N. Frini; Srasra, E.] Natl Res Ctr Mat Sci, Soliman, Tunisia. [Uheida, A.; Muhammed, M.] Royal Inst Technol KTH, Funct Mat Div, Stockholm, Sweden. [Seffen, M.] 4011 Hammam Sousse Sousse Univ, Lab Energy & Mat LABEM, High Sch Sci & Technol, Sousse, Tunisia. [Abderrazek, K.; Srasra, N. Frini] Tunis El Manar Univ, Fac Sci Tunis, El Manar, Tunisia., 2015. Vol. 50, no 2, 185-197 p.
Keyword [en]
[Zn-Al] LDH, nanofibres, indigo carmine, retention, photocatalysis
National Category
Mineral and Mine Engineering Geotechnical Engineering
URN: urn:nbn:se:kth:diva-176381DOI: 10.1180/claymin.2015.050.2.03ISI: 000362443900003ScopusID: 2-s2.0-84946056613OAI: diva2:867027

QC 20151104

Available from: 2015-11-04 Created: 2015-11-03 Last updated: 2015-11-04Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Uheida, AbdusalamMuhammed, Mamoun
By organisation
Functional Materials, FNM
In the same journal
Clay minerals
Mineral and Mine EngineeringGeotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 103 hits
ReferencesLink to record
Permanent link

Direct link