Chen Chang, Du Shiwen, Wang Yumin, Han Ziwu, Zhang Siyi, Ma Wenmei, Xu Hu, Fang Pengfei
School of Physics and Technology, Key Laboratory of Nuclear Solid State Physics Hubei Province, Wuhan University, Wuhan 430072, China; School of New Energy Materials and Chemistry, Leshan Normal University, Leshan 614000, China.
School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China.
J Colloid Interface Sci. 2026 Jan;701:138758. doi: 10.1016/j.jcis.2025.138758. Epub 2025 Aug 18.
The hollow MoSe/N-doped carbon (NC) composite, which was obtained through Mo-polydopamine as a self-sacrificing template based on the Kirkendall effect, was further utilized to fabricate a novel ternary MoSe/NC/ZIS (MNZ) dual Z-scheme heterojunction by growing ZnInS (ZIS) onto it via a hydrothermal process. The optimized MNZ (12MNZ) heterojunction exhibits exceptional performance in photocatalytic degradation of tetracycline hydrochloride (TCH), hydrogen (H) evolution, hydrogen peroxide (HO) production, and carbon dioxide (CO) reduction under visible light irradiation. The 12MNZ photocatalyst achieves a significant photodegradation efficiency of TCH reaching 98.2 % in 30 min, and the rate constant k of the 12MNZ photocatalyst, which is 0.139 min, is approximately 9.8 times greater than that of ZIS. The optimal photocatalytic H evolution rate of 10,309 μmol g h achieved is 26.9 times greater than that of ZIS, while the superior production rate of HO reaches 735.2 μmol L h. Besides, the 12MNZ composite reveals the CO yield of 78.03 μmol g h with high selectivity of 95 %. The presence of a hollow structure and two built-in electric fields within the MNZ dual Z-scheme heterojunction significantly enhances the absorption efficiency of incident light and promotes the efficient migration of photogenerated carriers. The possible photocatalytic mechanism of the MNZ photocatalyst was presented through experimental measurements and density functional theory calculations. This work provides a promising strategy for developing highly efficient hollow dual Z-scheme heterojunction photocatalysts, aimed at enhancing environmental remediation and generating green energy.
通过以钼 - 聚多巴胺为自牺牲模板，基于柯肯达尔效应制备得到中空的MoSe₂/氮掺杂碳（NC）复合材料，并通过水热法在其上生长ZnIn₂S₄（ZIS）进一步制备了新型三元MoSe₂/NC/ZIS（MNZ）双Z型异质结。优化后的MNZ（12MNZ）异质结在可见光照射下对盐酸四环素（TCH）的光催化降解、析氢（H₂）、过氧化氢（H₂O₂）生成及二氧化碳（CO₂）还原方面表现出优异性能。12MNZ光催化剂在30分钟内实现了TCH高达98.2%的显著光降解效率，其速率常数k为0.139 min⁻¹，约是ZIS的9.8倍。12MNZ光催化剂的最佳光催化析氢速率达到10309 μmol g⁻¹ h⁻¹，是ZIS的26.9倍，同时H₂O₂的优越生成速率达到735.2 μmol L⁻¹ h⁻¹。此外，12MNZ复合材料显示出78.03 μmol g⁻¹ h⁻¹的CO₂产率，选择性高达95%。MNZ双Z型异质结中空心结构和两个内建电场的存在显著提高了入射光的吸收效率，并促进了光生载流子的高效迁移。通过实验测量和密度泛函理论计算揭示了MNZ光催化剂可能的光催化机理。这项工作为开发高效的中空双Z型异质结光催化剂提供了一种有前景的策略，旨在加强环境修复和产生绿色能源。
