Persulfate activated by non-thermal plasma for organic pollutants degradation: A review

•Non-thermal plasma used to PS activation for organic pollutants degradation was reviewed.•Factors influencing the degradation of organic compounds by plasma/PS were elaborated.•Plasma-combination for enhanced persulfate activation was summarized.•The mechanism of organic compounds degradation by plasma/PS were cleared.•The conclusion and future prospect of plasma/PS were put forward.