Recycling and Sustainable Utilization of Precious and Specialty Metals

Inter-Sectoral Economic Linkages in the Mining Industries of Botswana and Tanzania: Analysis Using Partial Hypothetical Extraction Method

“…While there are no data or mechanism to discern the sources of metal scraps, Tanzania is said to possess large surpluses of scrap, which the foundries and steel mills have not been able to utilize fully [60]. The development of a sustainable and innovative recycling practice has many advantages, including the recovery of valuable resources, especially through the "decoupling of technology metal from major metal sources"; the continued supply of metals; employment potential, especially in collection and pre-processing; and the reduction in the environmental impacts via minimizing toxic metals that enter the environment and, thus, reducing the burden that the mining sector imposes on the environment, alternative use of water and land, and the emission of carbon dioxide [61].…”

(Invited) Interplay between Chemical Composition, Synthetic Parameters and ORR Performance of Pt-Free Electrocatalysts for the ORR Including Graphene-Based Cores and a Carbon Nitride Shell

“…The performance of low-temperature fuel cells is bottlenecked by the sluggish kinetics of the oxygen reduction reaction (ORR) (5); hence, the development of high-performing and durable ORR electrocatalysts (ECs) is a major goal of both fundamental and applied research (7,8). In particular, the highest-performing electrocatalysts (ECs) for the ORR include a considerable loading of platinum-group metals (PGMs) (9), whose abundance in Earth's crust is extremely limited (10,11). This is a major shortcoming towards the widespread rollout of low-temperature fuel cells, due to the high costs and the risk to incur in supply bottlenecks (12).…”