Sunlight induced photodegradation of toxic azo dye by self-doped iron oxide nano-carbon from waste printer ink

A simpler and sustainable approach for the isolation of self-doped iron-oxide nano-carbons from the waste black toner ink as a “freely available waste carbon black precursor is presented here.” The residual waste printer ink is usually known as the black toner ink and generally discarded as waste. In the simpler process, the waste black toner ink has been carbonized in a muffle furnace at ~600 °C and on further oxidation converted to its...