Highly efficient photocatalytic H2O2 production on core–shell CdS@CdIn2S4 heterojunction in non-sacrificial system

MIL-100(Fe)/g-C3N4 composites with enhanced photocatalytic activity for UO22+ reduction under visible light

As a clean energy source, nuclear energy can gradually replace traditional fossil energy sources, and is an important means to achieve the "double carbon goal". Uranium-containing wastewater is inevitable in the development of nuclear energy. The composites MIL/CNx of MOF material MIL-100(Fe) and carbon nitride (CN) were obtained by a simple solvo-thermal method using iron nitrate, homophthalic acid and CN. The material MIL-100(Fe) with high specific surface area was compounded with CN to increase the in-plane adsorption sites, which could adsorb 30% of uranium in solution during the dark reaction. The close interfacial contact of the two materials effectively inhibited the complexation of photo-generated electrons and holes and promotes electron migration. These two synergistic effects improved their overall photocatalytic reduction capacity, which could reduce 97% of UO₂²⁺ in solution in 20 min. The UO₂²⁺ removal efficiency of MIL/CN_0.1 was 2.3 and 1.6 times higher than that of CN and MIL-100(Fe), respectively. In addition, MIL/CN_0.1 was stable in reducing uranium during the five cycles of the experiment.

One-pot synthesis of Zn-CdS@C nanoarchitecture with improved photocatalytic performance toward antibiotic degradation

In this paper, carbon-coated Zn doped CdS core-shell photocatalyst (Zn-CdS@C) was fabricated via one-pot solvothermal method. The obtained Zn-CdS@C architectures displayed enhanced performance in photocatalytic antibiotic removal process. The Zn doped sites and carbon shell could all contribute to the prolonged lifetime of charge carriers and furthermore, result in the improved photoactivity. Moreover, the carbon shell could effectively improve the corrosion resistance of sulfide photocatalyst. We hope this study could provide novel insights into the fabrication of highly-efficient carbon-coated core-shell nanostructure toward wastewater treatment.