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06 July 2018 Photo Supplied
Five PhDs for Chemistry group at June 2018 graduation
Pictured here are the Department of Chemistry graduates and their promoters/ co-promoters. From the left are: Dr Alebel Belay, Dr Dumisani Kama, Dr Orbett Alexander, Dr Pennie Mokolokolo and Dr Pule Molokoane; back: Prof Andreas Roodt, Dr Marietjie Schutte-Smith, Dr Alice Brink and Dr Johan Venter. Prof Roodt was either promoter or co-promoter to four of the graduates, while Prof Deon Visser (promoter; not present) and Dr Alice Brink (co-promoter) supervised Dr Orbett Alexander.

What is the common factor among metal extraction from mineral reserves, the treatment of cancer, and nanomaterials in cellular phones? The answer is Chemistry. 

For the first time since the Department of Chemistry at the University of the Free State (UFS) was founded some 114 years ago, a single research group in Chemistry delivered five PhD students.  This was achieved in the division of Inorganic Chemistry at the 2018 Winter graduation ceremony by the group under leadership of Prof Andreas Roodt and senior colleagues, Drs Johan Venter, Alice Brink and Marietjie Schutte-Smith. Prof Deon Visser, a former group member, was promoter for one of the students. 

The five graduandi are Drs Alebel Belay, Dumisani Kama, Pennie Mokolokolo, Pule Molokoane and Orbett Alexander. Their research involved the use of special chemical groups which are attached to metals such as platinum, rhodium, niobium, technetium and rhenium to create compounds with special pre-selected properties. 

The combination of these special groups with the metals allow many different potential applications – all adding value. These include metal extraction from South Africa’s rich mineral reserves, the treatment of diseases such as cancer, the diagnosis of heart and brain damages, nanomaterials which are used in cellular phones, catalysts to produce cleaner petrol, special light devices which by themselves ‘glow in the dark’, and more. 

Three of the students completed part of their research in Switzerland.

News Archive

Famous mineralogists visit UFS Geology
2017-04-25

Description: Famous mineralogists visits UFS Geology Tags: Famous mineralogists visits UFS Geology

From the left: Prof Marian Tredoux, Associate
Professor at the UFS Department of Geology;
Prof Giorgio Garuti; from the University of Leoben,
Dr Federica Zaccarini, also from the
University of Leoben and Dr Freddie Roelofse,
Head of the Department of Geology at the UFS.
Photo: Rulanzen Martin


Years of academic friendship and collaboration is what makes Prof Giorgio Garuti and Dr Federica Zaccarini return to the University of the Free State (UFS) every so often.

The world-renowned academic duo from the University of Leoben in Austria were guest lecturers at the UFS Department of Geology. “We are here because we have known Professor Marian Tredoux and the Geology Department, for a long time. We are really happy to be here, and to be given the opportunity to present talks,” said Dr Zaccarini. The two are experts in platinum-group element mineralogy and each has given their surname to minerals namely, the Garutiite and Zaccariniite minerals.

Visit great advantage for research

They are acclaimed experts on very small minerals (smaller than a hundredth of a millimetre) with emphasis on platinum group elements in chrome-rich rocks. “Their visit is a great advantage for us. We also conduct research on these minerals and can learn from them,” said Prof Marian Tredoux, affiliated researcher at the Department of Geology.

Dr Zaccarini gave a lecture on Chromitites, and associated platinum-group elements, in ophiolites on Wednesday 5 April 2017 and Dr Garuti presented a lecture on Uralian-Alaskan complexes: a puzzling source of platinum, on Thursday 6 April 2017. During the talks they examined the association of the platinum-group minerals with chromite, rather than sulphide, and how this association can lead to the formation of unusual platinum-group element ores.

Collaboration on various academic papers

They and Prof Tredoux have collaborated on various research articles over the past four years, which have been published in various important international scientific journals. “These journals play an important role in calculating the H-scale which measures how important a researcher’s work is on an international scale,” said Prof Tredoux.

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