Modulating of Bi2MoO6-based photocatalyst through manipulation of reactant ratios for enhanced visible light photocatalytic activity

In this work, a novel photocatalyst, comprising of Bi 2 MoO 6 and Bi 2 O 2 (OH)(NO 3 ), was successfully synthesized by the one-pot hydrothermal method, thereby illuminating an innovative avenue for structure modulation of Bi 2 MoO 6 . The characterizations proved the facile attainability of controllable modifications in the microstructure and morphology of Bi 2 MoO 6 . The comprehensive appraisal of the synergistic adsorption-photocatalytic performances of the composites in the context of ciprofloxacin (CIP) was carried out. The findings presented compelling evidence that the amalgamation of Bi 2 MoO 6 /Bi 2 O 2 (OH)(NO 3 ) exhibited an extraordinary adsorption capacity and photocatalytic activity when compared with the pristine Bi 2 MoO 6 and Bi 2 O 2 (OH)(NO 3 ). By virtue of its high surface area and pore volume, the optimized BMO/BON manifested a CIP adsorption capacity that surpassed that of Bi 2 MoO 6 and Bi 2 O 2 (OH)(NO 3 ) by approximately 2.4 and 11.2 times, respectively. Furthermore, through the concerted effects of adsorption and photocatalytic degradation, BMO/BON demonstrated an impressive CIP removal efficiency of 99.2 % following a mere 30 min of visible light exposure. The reaction rate constant was found to be approximately 0.124 min −1 for BMO/BON, surpassing that of Bi 2 MoO 6 and Bi 2 O 2 (OH)(NO 3 ). The augmentation in the photocatalytic activity of BMO/BON can be ascribed to its diminutive crystalline dimensions, large specific surface area, and narrowed bandgap. Thus, this investigation introduces a practical and ingenious strategy for the tuning of the Bi 2 MoO 6 structure by manipulation of reactant ratios, showcasing significant implications in the realm of catalysis.