Hydrochloric Acid Treatment: An Effective Method to Enhance the Catalytic Performance of TiO<sub>2</sub> Stellerite Composite Photocatalyst on Methyl Orange

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  • Chen Hua
    Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology Zhejiang Yongtai Paper Co. Ltd
  • Han Wenjia
    Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China, Qilu University of Technology
  • Lang Xiaoli
    Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology
  • Zhao Huifang
    Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology
  • Wang Haiwen
    Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology
  • Yang Fei
    State Key Lab of Pulp and Paper Engineering, South China University of Technology
  • Shi Dali
    Zhejiang Provincial Key Lab for Chem & Bio Processing Technology of Farm Product, Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Zhejiang University of Science and Technology
  • Wang Jianhua
    Zhejiang Yongtai Paper Co. Ltd
  • Wang Huajun
    Zhejiang Yongtai Paper Co. Ltd

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  • Hydrochloric Acid Treatment : An Effective Method to Enhance the Catalytic Performance of TiO₂ Stellerite Composite Photocatalyst on Methyl Orange

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<p>Stellerite (a natural zeolite) was used as substrate for titanium dioxide deposition. Stellerite was treated at 363 K with hydrochloric acid solutions of different concentrations (0.2–1.0 mol L−1) for 4 hours. The resulting composite samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), Fourier transform infrared spectroscopy (FT-IR), BET surface area analysis and X-ray diffraction (XRD). The hydrochloric acid treatment caused the creation of micropores with ～1 nm diameter. The result illustrates that stellerite possesses strongly acid-resistant property in hydrochloric acid solutions with a concentration no higher than 0.4 mol L−1. The photocatalytic degradation activity of TiO2/stellerite changed remarkably when stellerite supports treated with different concentrations of hydrochloric acid were used, giving the optimum hydrochloric acid concentration of 0.4 mol L−1. The recycling of the TiO2/stellerite photocatalyst was also investigated, and the methyl orange degradation rate was 75.0% of the initial rate after four cycles.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 57 (8), 1378-1383, 2016

    The Japan Institute of Metals and Materials

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