Akademik Veri Yönetim Sistemi
Journal of Water Process Engineering, cilt.74, 2025 (SCI-Expanded, Scopus)
Hydrogen is a promising energy source that can solve environmental problems, and photocatalytic hydrogen production from water is a promising renewable energy process. CdxZn1-xS has stood out in recent years due to its tunable optical properties, making it an excellent candidate for photocatalytic hydrogen production. MoS2, due to its large surface area, ability to inhibit charge recombination, low cost, high reactivity for the H2 evolution reaction, and improved visible light sensitivity, is used as an additive in semiconductor photocatalysts. Transition metal carbides like Mo2C are excellent electrocatalysts for H2 production; moreover, they serve as effective cocatalysts for many photocatalysts. In this study, nanorod Cd0.7Zn0.3S (N-CZS) was synthesized by solvothermal method, then MoS2 nanosheet was synthesized on as-prepared N-CZS by hydrothermal method. On the one hand, MoC-Mo2C was synthesized by carburization and added to N-CZS/MoS2 structure. Thus, Cd0.7Zn0.3S nanorod decorated by MoS2/MoC-Mo2C hybrid cocatalyst was prepared with different percentages of MoS2 and MoC-Mo2C. While 37 mmol g-1 h-1 of hydrogen production was observed with bare N-CZS, this rate increased 3.5 times to 132 mmol g-1 h-1 for N-Cd0.7Zn0.3S/1 % MoS2 (N-CZS/1MS) upon the addition of MoS₂. To enhance both the structural stability and hydrogen production efficiency, MoC-Mo2C was incorporated into the photocatalyst structure. The resulting photocatalyst exhibited superior hydrogen production. Furthermore, the N-Cd0.7Zn0.3S/1%MoS2/1%MoC-Mo2C (N-CZS/1MS/1MC) composite, which was consistent with photoelectrochemical measurements, demonstrated a 4.5-fold increase in hydrogen production, reaching 168 mmol g-1 h-1. Additionally, it yielded improved performance in stability tests.