Highly Efficient Photocatalytic Cr(VI) Reduction by Lead Molybdate Wrapped with D-A Conjugated Polymer under Visible Light

Well-designed composite photocatalysts are of increasing concern due to their enhanced catalytic performance compared a single component. Here, photocatalyst composed PbMoO4 (PMO) and poly-benzothiadiazole (BBT, D-A-conjugated polymer) was successfully synthesized by BBT polymerization on the surface PMO. The resultant BBT-PMO with heterojunction structure represented an ability reduce highly toxic heavy metal Cr(VI) from water under visible light irradiation. 16.7% BBT-PMO(N, nanoscale) showed best performance. corresponding kobs over BBT-PMO(N) 26-fold (or 53-fold) that pure pristine PMO(N)), this activity maintained after four cycles. reasons for its good discussed in detail based experimental results. Moreover, synthesis situ PMO also altered morphology component, specific area endowing it adsorb Cr(VI). Additionally, environmentally friendly as such wrapped could sustain high stability without dissociation. This work provides strategy efficient photocatalytic reduction designing organic–inorganic hybrid system redox capacity.