Hierarchical layered nanostructure of MoS2/boron doped reduced graphene oxide composites under visible light irradiation for effective antibiotic degradation and hexavalent chromium reduction

•Hierarchical MoS2/B-dopedrGO photocatalysts was prepared via hydrothermal route.•The MoS2/B-dopedrGO photocatalysts was used for Tetracycline hydrochloride (TC) degradation and Cr (VI) reduction.•The strong interaction between B-Mo-S led to extended light absorption up to 730 nm.•The TC degradation and Cr (VI) reduction efficiency of ~85.3% and ~80.1% was achieved, respectively. Hierarchical layered structures of dichalcogenides have assumed significant part in the feasible removal of harmful metals and antibiotic degradation. In this paper, the hierarchical MoS2 was fabricated with B-rGO sheets using facile and low-cost hydrothermal approach and characterized through XRD, HRSEM, HRTEM, Raman, and UV-DRS. The MoS2/B-rGO nanocomposites exhibit higher photo-responsive region than the visible window. From the UV-DRS studies, the optimized band gap level calculated as 1.7 eV for MoS2/B-rGO this is due to a direct connection between the B-rGO layers would strongly suppress the electron-hole pair recombination. The maximum photocatalytic degradation efficiency of ~85.3% towards Tetracycline hydrochloride (TC) and Cr (VI) to Cr (III) of ~80.1% was achieved. This investigation was likely to be new open window for the development of environmental and energy applications for future generations.