Stability of the photocatalyst, maximum solar energy harvesting and effective photogenerated charge carrier separation are yet demanding key features of the photocatalysis for pollutant abetment and photo-electrochemical applications. Herein, we report the in situ solvothermal synthesis of CdS–Bi₂MoO₆ core-shell heterostructures (CdS–Bi₂MoO₆ CSHs) for the photocatalytic elimination of methyl orange (MO) under visible light. The as-synthesized CdS–Bi₂MoO₆ CSHs exhibited highest photocatalytic performance of 98.5%, which is approximately 10 and 4 folds higher than pristine Bi₂MoO₆ nanosheets (NSs) and CdS nanorods (NRs), respectively. This significantly enhanced photocatalytic performance is attributed to the core-shell heterostructure that improves the visible-light harvesting ability, facilitates efficient separation and transfer of the photogenerated charge carriers, as well as synergistic band alignment of both CdS NRs and Bi₂MoO₆ NSs. The CdS–Bi₂MoO₆ CSHs also showed efficient photocatalytic performance toward methylene blue (MB) as colored dye and tetracycline hydrochloride (TCH) as a colorless emerging contaminant. Additionally, the outcomes of transient photocurrent, electrochemical impedance, and photoluminescence study further corroborate that the construction of core-shell heterostructures with tight contact, leading to effective charge carrier separation. The hole (h⁺) and superoxide radical anion (^•O₂⁻) were determined to be the predominant active species accountable for the MO dye degradation. Furthermore, the CdS–Bi₂MoO₆ CSHs exhibited a satisfactory recycling efficiency over five cycles (reduced by approximately 6%), owing to the protective Bi₂MoO₆ NSs shell over the CdS NRs core, demonstrating their applicability in wastewater purification and photo-electrochemical applications.

光催化剂的稳定性，最大​​程度的太阳能收集和有效的光生载流子分离仍是光催化用于污染物诱导和光电化学应用的关键特征。在这里，我们报告原位溶剂热合成的CdS–Bi ₂ MoO ₆核壳异质结构（CdS–Bi ₂ MoO ₆ CSHs）在可见光下光催化消除甲基橙（MO）。合成后的CdS–Bi ₂ MoO ₆ CSHs表现出最高的光催化性能，为98.5％，比原始Bi ₂ MoO ₆高约10倍和4倍。纳米片（NSs）和CdS纳米棒（NRs）。这种显着增强的光催化性能归因于核-壳异质结构，该结构改善了可见光收集能力，促进了光生电荷载流子的有效分离和转移，以及CdS NR和Bi ₂ MoO ₆ NS的协同能带对准。CdS–Bi ₂ MoO ₆CSH还显示出对作为有色染料的亚甲基蓝（MB）和作为无色正在出现的污染物的四环素盐酸盐（TCH）的有效光催化性能。此外，瞬态光电流，电化学阻抗和光致发光研究的结果进一步证实了紧密接触的核-壳异质结构的构建，从而导致有效的载流子分离。的孔（H ⁺）和超氧阴离子自由基（^• ö ₂ ^- ）被确定为用于MO染料降解负责主要的活性物质。此外，CdS–Bi ₂ MoO ₆由于在CdS NRs核心上具有保护性的Bi ₂ MoO ₆ NSs外壳，CSH在五个循环中表现出令人满意的回收效率（降低了约6％），证明了它们在废水净化和光电化学应用中的适用性。