Insight into photocatalysis technology as a promising approach to tackle microplastics pollution through degradation and upcycling

•Build-up plastic in environment leading to the microplastics (MPs) pollution.•MPs pollution pose serious damage to marine life, habitats, and human health.•Photocatalytic process is a promising strategy to eliminate MPs pollution.•Photocatalytic degradation – degrading and mineralizing MPs into CO2 and H2O.•Photocatalytic upcycling – converting of MPs into H2 and valuable chemical products.