Inorganic Chemist Highlights the Science and Beauty of Metals in Inaugural Lecture

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UKZN Professor Stephen Ojwach, an expert in Inorganic Chemistry, delivered his inaugural lecture titled: “Transforming Gases into Treasures: The Science and Beauty of Metals”.

The lecture offered a captivating exploration into the role of metals in advancing modern science and industry.

Metals have long been central to technological and scientific progress, impacting everything from everyday technology to ground-breaking medical innovations. Ojwach’s lecture shed light on the fascinating world of transition metals and their pivotal role in designing valuable materials through understanding their coordination chemistry.

Coordination chemistry, a specialised branch of the Discipline, examines the interactions between metal ions and surrounding molecules (ligands). The field has become instrumental in developing metal-based catalysts that convert hazardous gases such as ethylene, hydrogen and carbon monoxide into vital products including plastics, fuels, surfactants, fragrances and food additives.

Ojwach spoke to his research and underscored the remarkable potential of these catalysts not only in generating valuable materials but also in promoting sustainable practices. He said traditional industrial processes often involved significant environmental and economic challenges, highlighting his innovative approach to designing affordable, abundant and available recyclable catalysts that align with the circular economy principles, and emphasised the importance of creating materials that are environmentally friendly, thus contributing to waste reduction and resource conservation.

Ojwach’s inter- and multi-disciplinary approach stands out for its integration of chemistry, biology and materials science. His research team is exploring metal complexes with potential applications in medicine, particularly as anti-cancer agents with this broader impact of his work highlighting the versatility and significance of his research beyond conventional industrial uses.

Ojwach’s career is a testament to his dedication and expertise in chemistry. Coming from a humble background to obtaining a BSc Hons (First class) in Chemistry from the University of Nairobi, an MSc from the University of the Western Cape, and a PhD from the University of Johannesburg, he has built a distinguished academic career and risen from senior lecturer to full professor at UKZN within a short period of time.

His contributions to the field are notable, with over 150 scientific papers published in the fields of Inorganic Chemistry, Organometallic Chemistry, Catalysis and Bioinorganic Chemistry. He has also mentored several postgraduate students and postdoctoral fellows.

He has received numerous awards and fellowships and is a member of a number of scientific organisations, including a fellow of the Royal Society Chemistry. His academic scholarship and standing in the discipline of Inorganic Chemistry are affirmed by his C2 rating from the National Research Foundation of South Africa.

Words: Sally Frost

Photograph: Sethu Dlamini