Zongwen Zhang , Yuge Zhang , Yi Zhang , Yueyue Kong , Xiang Li , Muhammad Tayyab , Shifu Chen , Sugang Meng
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引用次数: 0
Abstract
In this study, we synthesized a two-dimensional-three-dimensional (2D-3D) flower-like Zn2In2S5 (ZIS225) photocatalyst via the hydrothermal method. The photocatalytic performance of ZIS225 was systematically evaluated for the degradation of methyl orange (MO) and hydrogen production under visible light irradiation. ZIS225 achieved a 100 % degradation rate of MO within 60 min, with a reaction rate constant of 6.11 h−1, significantly outperforming commercial anatase TiO2 (degradation rate of 42.7 % and reaction rate constant of 0.54 h−1). Moreover, ZIS225 demonstrated the ability to simultaneously degrade MO and produce hydrogen, with a hydrogen production rate of 4.9 μmol g−1h−1 and a MO degradation rate of 99.7 %. The hydrogen production rate increased to 35.3 μmol g−1h−1 upon in-situ photodeposition of 1 % Pt, maintaining stable performance over three cycles. Photoelectrochemical and electron paramagnetic resonance (EPR) analyses identified superoxide radicals (•O2−) and photogenerated holes (h+) as the primary active species. This research provides valuable insights for the development of efficient photocatalytic materials and offers technical references for dye pollution treatment and clean energy conversion.
期刊介绍:
JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds.
All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor).
The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.