Waste printed circuit boards (PCBs) contain high-grade precious metals and are an important part of the electronic waste value chain. However, our country lacks key technologies for environmentally friendly extraction of precious metals. For a long time, outdated processes such as open-air incineration and acid leaching have been used to extract metals, resulting in serious … Read more
Recycling Market Value The price of waste circuit boards mainly depends on the content of precious metals inside. For example, the price of a ton of waste circuit boards from TV circuit boards is around 30,000 to 40,000 yuan. A ton of computer boards typically contains about: 300-500g of gold, 130kg of copper, 10kg of … Read more
To achieve large-scale hydrogen production through water electrolysis, it is crucial to develop non-precious metal catalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Here, we prepared a tin, iron, and cobalt-based sulfide/oxide heterostructure catalyst (FeSnCo0.2SxOy/NF) on nickel foam using a solvothermal method. FeSnCo0.2SxOy/NF outperforms IrO2||Pt/C electrolyzers at a current density of … Read more