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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 academic appointed as team doctor for SA Olympic Team
2012-03-22

 

Dr Holtzhausen’s appointment reflects well on the quality of exercise and sports medicine presented at the university.
20 March 2012

Dr Louis Holtzhausen, Head of the university’s Department of Sports and Exercise Medicine, has been selected by the South African Sports Confederation and Olympic Committee (Sascoc) as team doctor for the more than 300 athletes that will represent South Africa at this year’s Olympic Games in London.

“This is definitely one of the most important highlights of my career, in which I’ve worked with professional athletes and top sporting people,” says Dr Holtzhausen, a recognised South African academic in Sports Medicine.

“It is not only an honour to be appointed as team doctor for the South African Olympic Team. It is also a privilege to represent the UFS. The fact that Sascoc approached me reflects well on the quality of exercise and sports medicine that we present here at the university,” says Dr Holtzhausen.

Dr Holtzhausen says he has already worked with some of the athletes in the Olympic Team. These include members of the South African boxing team, the hockey team, as well as track and field athletes that have been preparing for the Olympic Games at the university’s High Performance Unit.

There is, however, hard work ahead for Dr Holtzhausen. His work will start before the team leaves for London in July. “I have to ensure that all the athletes are healthy and that everyone’s immunisation programmes are up to date. We also have to ensure that no athlete takes banned substances,” he says.

During the Games, Dr Holtzhausen will keep an eye on the optimal functioning of every athlete. “Anything that could hamper them medically will be sorted – whether it’s a broken ankle or a cold,” he says.

He will also see to it that medical services are available during the competition. Immediate medical assistance will be available, especially at high contact sports like boxing.

Dr Holtzhausen has also been team doctor for Team South Africa at the All Africa Games, the biggest sporting event in Africa. He was recently appointed as a member of the International Committee and Coordinator for Africa of the worldwide Exercise is Medicine project. This project proposes that exercise be used in the prevention of chronic disease in the general population, as well as in the treatment of people with existing chronic diseases. Dr Holtzhausen is also an honorary member of the South African Sports Medicine Association (SASMA). This membership is awarded to members of the medical and scientific community who make significant contributions to the advancement of sports medicine.

Dr Holtzhausen is a member of the Vice-Chancellor’s Prestige Scholars Programme.
The goal with the Prestige Scholars Programme is to select no more than 100 of the most promising young scholars (typically holding lecturer status) and to make substantial investments in their development towards the professoriate. A tailored, intensive programme of support has been designed which combines international placement working alongside leading scholars in the discipline of the prestige scholar, with intensive mentorship and support from within the university.

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