We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
The Fabrication and Property Characterization of a Ho2YSbO7/Bi2MoO6 Heterojunction Photocatalyst and the Application of the Photodegradation of Diuron under Visible Light Irradiation
Summary
Researchers created a new photocatalytic material by combining two metal oxide compounds and tested its ability to break down diuron, a widely used herbicide and water pollutant, under visible light. The composite material showed significantly better pollutant degradation performance than either component alone. The study presents a potential approach for using sunlight-driven catalysts to remove persistent chemical contaminants from water.
A novel photocatalytic nanomaterial, Ho2YSbO7, was successfully synthesized for the first time using the solvothermal synthesis technique. In addition, a Ho2YSbO7/Bi2MoO6 heterojunction photocatalyst (HBHP) was prepared via the hydrothermal fabrication technique. Extensive characterizations of the synthesized samples were conducted using various instruments, such as an X-ray diffractometer, a Fourier transform infrared spectrometer, a Raman spectrometer, a UV-visible spectrophotometer, an X-ray photoelectron spectrometer, and a transmission electron microscope, as well as X-ray energy dispersive spectroscopy, photoluminescence spectroscopy, a photocurrent test, electrochemical impedance spectroscopy, ultraviolet photoelectron spectroscopy, and electron paramagnetic resonance. The photocatalytic activity of the HBHP was evaluated for the degradation of diuron (DRN) and the mineralization of total organic carbon (TOC) under visible light exposure for 152 min. Remarkable removal efficiencies were achieved, with 99.78% for DRN and 97.19% for TOC. Comparative analysis demonstrated that the HBHP exhibited markedly higher removal efficiencies for DRN compared to Ho2YSbO7, Bi2MoO6, or N-doped TiO2 photocatalyst, with removal efficiencies 1.13 times, 1.21 times, or 2.95 times higher, respectively. Similarly, the HBHP demonstrated significantly higher removal efficiencies for TOC compared to Ho2YSbO7, Bi2MoO6, or N-doped TiO2 photocatalyst, with removal efficiencies 1.17 times, 1.25 times, or 3.39 times higher, respectively. Furthermore, the HBHP demonstrated excellent stability and reusability. The mechanisms which could enhance the photocatalytic activity remarkably and the involvement of the major active species were comprehensively discussed, with superoxide radicals identified as the primary active species, followed by hydroxyl radicals and holes. The results of this study contribute to the advancement of efficient heterostructural materials and offer valuable insights into the development of sustainable remediation strategies for addressing DRN contamination.
Sign in to start a discussion.
More Papers Like This
G-C3N4 Dots Decorated with Hetaerolite: Visible-Light Photocatalyst for Degradation of Organic Contaminants
Researchers developed a graphitic carbon nitride and hetaerolite composite photocatalyst that degrades organic contaminants under visible light, offering a cost-effective approach to removing emerging pollutants from water using solar energy.
Synthesis, Characterization of the Novel Heterojunction Photocatalyst Sm2NdSbO7/BiDyO3 for Efficient Photodegradation of Methyl Parathion
Researchers synthesised and characterised a novel Sm2NdSbO7/BiDyO3 heterojunction photocatalyst for the first time, using X-ray diffraction and transmission electron microscopy to evaluate its efficiency in photodegradation of the pesticide methyl parathion.
Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation
Researchers developed a metal-free, visible-light-activated photocatalyst called TpTt-COF that, when combined with a chemical oxidant (peroxymonosulfate), degrades organic dye pollutants 13.9 times faster than a comparable carbon-based material. The catalyst remained 83% effective after five reuse cycles, making it a promising candidate for treating chemical contaminants in water.
Visible-light photocatalysts: Prospects and challenges
This research update reviews the state of visible-light photocatalysis, discussing material types including metal oxides, organic semiconductors, and composites, their applications for environmental remediation and solar fuel generation, and the major challenge of scaling up photocatalytic processes to industrial viability. The authors identify cost-competitiveness with existing technologies as the primary barrier to practical deployment.
Rhombohedral/Cubic In2O3 Phase Junction Hybridized with Polymeric Carbon Nitride for Photodegradation of Organic Pollutants
Researchers developed a phase junction photocatalyst combining two forms of indium oxide with carbon nitride, achieving effective degradation of organic water pollutants under visible light without requiring precious metals.