New Method to Synthesize S-Doped TiO2 with Stable and Highly Efficient Photocatalytic Performance under Indoor Sunlight Irradiation

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• 作者：Mingshan Zhu ; Chunyang Zhai ; Liqun Qiu ; Cheng Lu ; Andrew S. Paton ; Yukou Du ; M. Cynthia Goh
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2015
• 出版时间：December 7, 2015
• 年：2015
• 卷：3
• 期：12
• 页码：3123-3129
• 全文大小：498K
• ISSN：2168-0485

文摘

In this paper, we report a new, low-cost, and facile solvothermal approach to synthesize visible-light-active S-doped TiO₂ (S-TiO₂) by using dimethyl sulfoxide (DMSO) as both the S source and the solvent. Energy-dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) solidly confirmed the presence of S element in the final product. The as-prepared S-TiO₂ nanoparticles exhibited excellent and long-term stable photocatalytic performance for the degradation of organic pollutants under visible and indoor sunlight illumination. The catalyst still maintained high photoactivity even after several months of exposure to the indoor sunlight irradiation. This result suggests a new approach to achieve stable and highly efficient solar light driven photocatalysts for water purification.