Green chemistry is a rapidly evolving field that is constantly seeking innovative ways to minimize the environmental impact of chemical processes. Here are several emerging trends that are seeing significant breakthroughs:
- Improving green chemistry predictions/outcomes: One of the biggest challenges in green chemistry is predicting the environmental impact of new chemicals and processes. Researchers are developing new computational tools and models that can help predict these impacts with greater accuracy. This will allow chemists to design safer and more environmentally friendly chemicals.
- Reducing plastics: More than 350 million tons of plastic waste are generated every year. Across the landscape of manufacturers, suppliers, and retailers, reducing the use of single-use plastics and microplastics is critical. New value-driven approaches by innovators like MiTerro that reuse industrial by-products and biomass waste for eco-friendly and cheaper plastic replacements will soon be industry expectations. Lowering costs and plastic footprints will be important throughout the entire supply chain.
- Alternative battery chemistry: In the battery and energy storage space, finding alternatives to scarce “endangered elements” like lithium and cobalt will be critical. While essential components of many batteries, they are becoming scarce and expensive. New investments in lithium iron phosphate (LFP) batteries that do not use nickel and cobalt have expanded, with 45% of the EV market share being projected for LFP in 2029. Continued research is projected for more development in alternative materials like sodium, iron, and magnesium, which are more abundant, less expensive, and more sustainable.
- More sustainable catalysts: Catalysts speed up a chemical reaction or decrease the energy required without getting consumed. Noble metals are excellent catalysts; however, they are expensive and their mining causes environmental damage. Even non-noble metal catalysts can also be toxic due to contamination and challenges with their disposal. Sustainable catalysts are made of earth-abundant elements that are also non-toxic in nature. In recent years, there has been a growing focus on developing sustainable catalysts that are more environmentally friendly and less reliant on precious metals. New developments with catalysts, their roles, and environmental impact will drive meaningful progress in reducing carbon footprints.
- Recycling lithium-ion batteries: Lithium-ion recycling has seen increased investments with more than 800 patents already published in 2023. The use of solid electrolytes or liquid nonflammable electrolytes may improve the safety and durability of LIBs and reduce their material use. Finally, a method to manufacture electrodes without solvents could reduce the use of deprecated solvents such as N-methylpyrrolidinone, which require recycling and careful handling to prevent emissions.