been widely used in environmental remediation. However, the biochar has a saturated
adsorption capacity when it is used as a pollutant adsorbent. Recent efforts have been made
to prepare biochar and biochar-based catalysts with enhanced catalytic properties to
expand their potential applications. The environmental persistent free radicals (EPFRs) of
biochar could react with O 2 to induce hydroxyl radicals (• OH) without the addition of …