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Abstract <p>In this paper, we present a novel and straightforward solid-phase reaction method that employs anhydrous SnCl<sub>2</sub> and H<sub>2</sub>O<sub>2</sub> disinfectant powders to rapidly synthesize efficient SnO<sub>2</sub> photocatalysts enriched with oxygen vacancies. A systematic structural characterization of SnO<sub>2</sub> catalysts was performed using various analytical techniques, including XRD, XPS, DRS, and Raman spectroscopy. These results indicated that SnCl<sub>2</sub> and H<sub>2</sub>O<sub>2</sub> can react vigorously, leading to the rapid formation of SnO<sub>2</sub> after brief stirring. XRD results confirmed that amorphous SnO<sub>2</sub> was formed after reaction. SEM images revealed that the sample comprised numerous nanoparticles with a size of about 45 nm. Both XPS and Raman characterization validated the existence of oxygen vacancy defects, while trace Cl ions were found to be doped into the lattice of SnO<sub>2</sub>. DRS analysis demonstrated that, in comparison to high-purity SnO<sub>2</sub> reagents, the synthesized SnO<sub>2</sub> sample exhibited strong light absorption capabilities across both ultraviolet and visible light regions. Photocatalytic experiments established that the prepared SnO<sub>2</sub> catalyst displayed excellent photocatalytic degradation performance. Under simulated sunlight irradiation conditions, samples containing lower concentrations of H<sub>2</sub>O<sub>2</sub> disinfectant in their raw materials were able to completely degrade methyl orange within just 5 min. Finally, one photocatalytic degradation mechanism of methyl orange was proposed based on our findings.</p>

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Rapid Synthesis of SnO2 as a Highly Efficient Sunlight Photocatalyst

  • 期刊论文

  • 发表日期：

    2025年10月12日

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  • H. Zhao,
  • B. C. Meng,
  • L. Zhang,
  • S. K. Zhao

摘要

Abstract

In this paper, we present a novel and straightforward solid-phase reaction method that employs anhydrous SnCl2 and H2O2 disinfectant powders to rapidly synthesize efficient SnO2 photocatalysts enriched with oxygen vacancies. A systematic structural characterization of SnO2 catalysts was performed using various analytical techniques, including XRD, XPS, DRS, and Raman spectroscopy. These results indicated that SnCl2 and H2O2 can react vigorously, leading to the rapid formation of SnO2 after brief stirring. XRD results confirmed that amorphous SnO2 was formed after reaction. SEM images revealed that the sample comprised numerous nanoparticles with a size of about 45 nm. Both XPS and Raman characterization validated the existence of oxygen vacancy defects, while trace Cl ions were found to be doped into the lattice of SnO2. DRS analysis demonstrated that, in comparison to high-purity SnO2 reagents, the synthesized SnO2 sample exhibited strong light absorption capabilities across both ultraviolet and visible light regions. Photocatalytic experiments established that the prepared SnO2 catalyst displayed excellent photocatalytic degradation performance. Under simulated sunlight irradiation conditions, samples containing lower concentrations of H2O2 disinfectant in their raw materials were able to completely degrade methyl orange within just 5 min. Finally, one photocatalytic degradation mechanism of methyl orange was proposed based on our findings.