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25 August 2025 | Story Martinette Brits | Photo Stephen Collett
Prof Elizabeth Erasmus
Prof Elizabeth Erasmus during her inaugural lecture, Molecules of Change: Chemistry for a Better Tomorrow, on 20 August, highlighting how innovative chemistry can turn waste into value and promote sustainable solutions.

With climate change, resource scarcity, and environmental pollution among the most pressing challenges of our time, Prof Elizabeth (Lizette) Erasmus used her inaugural lecture on Wednesday, 20 August to show how chemistry can provide powerful, practical answers. In her lecture, Molecules of Change: Chemistry for a Better Tomorrow, she traced her journey from fundamental research to pioneering innovations that turn waste into value, protect ecosystems, and improve food security.

During her talk, Prof Erasmus – Researcher in the Department of Chemistry – recalled a moment in 2018 that reshaped her career trajectory. While preparing a Sasol research grant on copper oxide nanoparticles, an entrepreneur assisting with the proposal posed a deceptively simple challenge: “So what?” “Although upsetting at first, those two words completely reshaped my outlook,” she explained. “They inspired my journey from purely academic chemistry towards more applied, impactful research – with the mission of not only advancing science, but of also improving society and the environment.”

 

From fundamental science to global solutions

Prof Erasmus began her career in organometallic chemistry, preparing and characterising complex molecules to understand their reactivity and physical properties. Later, her focus shifted to heterogeneous catalysis, where she explored nanomaterials and surface chemistry.

Her research has since evolved towards developing sustainable technologies that address urgent global challenges. One example is agricultural innovation: using green solvents to extract cellulose from wattle tree bark to create biodegradable superabsorbent polymers. “Unlike the polyacrylates in baby diapers, these SAPs degrade into nutrients for soil microbes and plants,” she explained. “By loading them with fertiliser, we develop slow-release, water-retaining materials that improve agricultural sustainability.”

Other projects include producing biochar to restore degraded soils, creating natural growth enhancers such as wood vinegar, and designing an ‘ultimate fertiliser’ that combines these products for long-term soil health. Her group also works on environmental remediation, developing hydrophobic sponges to absorb oil spills, repurposing building waste to clean polluted water, and using innovative chemistry to convert carbon dioxide into valuable products.

“We are even looking at one of the fastest-growing waste streams: e-waste,” Prof Erasmus noted. “With more gold per ton than natural ore, e-waste represents both a challenge and an opportunity. By developing porous absorbent materials, we can selectively capture and reduce gold ions directly to metallic gold – recovering a precious resource from waste.”

She concluded by crediting her team and collaborators: “This, however, is only the tip of the iceberg. The bulk of the work lies beneath the surface, carried out by dedicated students, collaborators, mentors, colleagues, friends, and family. I owe them my deepest gratitude, for they are the ones who truly sustain this journey of transforming chemistry into solutions for a better world.”

 

About Prof Erasmus

Prof Elizabeth (Lizette) Erasmus obtained all her degrees at the University of the Free State: a BSc (2001), BSc Honours in Chemistry (2002), MSc in Chemistry (2003), and a PhD in Chemistry (2005). She has published more than 80 research papers, holds an H-index of 21, and has extensive experience in supervising MSc and PhD students.

After serving as a senior researcher at the CSIR, she returned to academia at the UFS, where her international collaborations in the Netherlands and at UC Davis broadened her focus from organometallic chemistry to heterogeneous catalysis and nanochemistry. Her expertise spans organometallic chemistry, electrochemistry, surface characterisation, and nanomaterials.

News Archive

UFS Council votes on top appointments
2003-11-24

The Council of the University of the Free State (UFS) today voted on the filling of four senior vacancies, including three posts at Vice-Rector level and one at the level of Dean.

The Council voted as follows:
- Prof Magda Fourie will be offered the post of Vice-Rector: Academic Planning
- Dr Ezekiel Moraka will be offered the post of Vice-Rector: Student Affairs
- Prof Teuns Verschoor will be offered the post of Vice-Rector: Academic Operations
- Prof Letticia Moja will be offered the post of Dean: Faculty of Health Sciences

Two of the candidates, Prof Teuns Verschoor and Prof Magda Fourie, are currently acting Vice-Rectors at the UFS. Prof Verschoor is acting Vice-Rector for Student Affairs and Prof Fourie is acting Vice-Rector for Academic Planning. Dr Moraka is currently Dean of Student Affairs at the University of Pretoria (UP). Prof Moja is currently the acting Dean of the Faculty of Health Sciences at the UFS.

According to the Rector and Vice-Chancellor of the UFS, Prof Frederick Fourie, the filling of these senior vacancies comes after one of the most thorough search and selection processes ever at the UFS.

“It is wonderful that we are able to celebrate the outcome of this process that has brought forward such excellent candidates who reflect our country’s diversity. It shows that we can achieve the goals of quality and diversity at the same time,” Prof Fourie said.

Prof Magda Fourie (49) received her Ph D on Institutional governance of higher education in transition: a South African perspective from the UFS in 1996. She joined the UFS in 1998, later becoming Director of the Centre for Higher Education Studies and Development and Professor in Higher Education Studies. She said in her declaration of intent her aspiration is to contribute to making the UFS the excellent university it foresees in its vision and mission. Academic planning should position the UFS with regard to its core activities strategically as an institution of excellence that will meet the future from a strong basis of academic integrity and credibility.

Dr Moraka (45) received his Ph D in Education Management on Management of change and conflict resolution by student affairs officers at historically white universities in South Africa from the UP in 2002. He is Dean of Students at the UP since 2001. Before that he was Head of Student Support and Student Social Services at the UP for six years. He was also, among others, a lecturer at a college of education and a pastor of the Dutch Reformed Church in Africa. He said in his declaration of intent that diversity can become so greatly emphasised that people can be driven further apart. Focus should be on moulding a student community where everyone can feel at home, a community which lives together and works together without destroying what is unique to each individual.

Prof Verschoor (53) received his LL D in 1980 at the University of Pretoria on The criminal responsibility of psychopaths and similar figures. He was professor in and Head of the Department of Criminal Law and Medical Law at the UFS for 17 years before becoming Dean of Students in 1994. He said in his declaration of intent that he dreams of the realisation of projects that are awaiting the enthusiastic support, bringing together and empowering of persons involved by a Vice-Rector that wants to see the UFS prosper in an era of continuing dynamic development. In this he would like to make a substantial contribution.

Prof Moja (46) received her MB ChB in 1982 from the University of Natal and her M.Med in Obstetrics and Gynecology in 1990 from the Medical University of South Africa (Medunsa). She became a full professor in 2003 at the UFS and has been acting as Dean of the UFS’s Faculty of Health Sciences since February 2003. She said in her declaration of intent that the challenge for her is to manage change with the ultimate aim of both achieving the vision of the UFS and satisfying the needs of the community. Some of the academic challenges include the training of more people from designated groups and rural areas. Careful planning and integration of the curriculum should be done to ensure that all students perform to their best.

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