SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 36 ›› Issue (8): 86-100.DOI: 10.1016/j.cjche.2020.08.010

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

Photocatalytic activity of metal nanoparticle-decorated titanium dioxide for simultaneous H2 production and biodiesel wastewater remediation

Patsakol Prayoonpunratn1, Trin Jedsukontorn1, Mali Hunsom1,2,3   

  1. 1 Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;
    2 Current address:Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand;
    3 Associate Fellow of Royal Society of Thailand(AFRST), Bangkok 10300, Thailand
  • 收稿日期:2020-07-20 修回日期:2020-08-04 出版日期:2021-08-28 发布日期:2021-09-30
  • 通讯作者: Mali Hunsom
  • 基金资助:
    The authors thank the TRF-CHE Research Career Development Grant (RSA5980015), the CU Graduate School Thesis Grant, Chulalongkorn University and the Center of Excellence on Petrochemical and Materials Technology (PETRO-MAT), Chulalongkorn University, Bangkok 10330, Thailand.

Photocatalytic activity of metal nanoparticle-decorated titanium dioxide for simultaneous H2 production and biodiesel wastewater remediation

Patsakol Prayoonpunratn1, Trin Jedsukontorn1, Mali Hunsom1,2,3   

  1. 1 Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand;
    2 Current address:Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakorn Pathom 73170, Thailand;
    3 Associate Fellow of Royal Society of Thailand(AFRST), Bangkok 10300, Thailand
  • Received:2020-07-20 Revised:2020-08-04 Online:2021-08-28 Published:2021-09-30
  • Contact: Mali Hunsom
  • Supported by:
    The authors thank the TRF-CHE Research Career Development Grant (RSA5980015), the CU Graduate School Thesis Grant, Chulalongkorn University and the Center of Excellence on Petrochemical and Materials Technology (PETRO-MAT), Chulalongkorn University, Bangkok 10330, Thailand.

摘要: A set of metal nanoparticle-decorated titanium dioxide (Mx/TiO2; where x is the percent by mass,%) photocatalysts was prepared via the sol-immobilization in order to enhance the simultaneous hydrogen (H2) production and pollutant reduction from real biodiesel wastewater. Effect of the metal nanoparticle (NP) type (M = Ni, Au, Pt or Pd) and, for Pd, the amount (1 %-4 %) decorated on the surface of thermal treated commercial TiO2 (T400) was evaluated. The obtained results demonstrated that both the type and amount of decorated metal NPs did not significantly affect the pollutant reduction, measured in terms of the reduction of chemical oxygen demand (COD), biological oxygen demand (BOD) and oil & grease levels, but they affected the H2 production rate from both deionized water and biodiesel wastewater, which can be ranked in the order of Pt1/T400 > Pd1/T400 > Au1/T400 > Ni1/T400. This was attributed to the high difference in work function between Pt and the parent T400. However, the difference between Pt1/T400 and Pd1/T400 was not great and so from an economic consideration, Pd/TiO2 was selected as appropriate for further evaluation. Among the four different Pdx/TiO2 photocatalysts, the Pd3/TiO2 demonstrated the highest activity and gave a high rate of H2 production (up to 135 mmol·h-1) with a COD, BOD and oil & grease reduction of 30.3%, 73.7% and 58.0%, respectively.

关键词: Hydrogen production, Wastewater, Remediation, Photochemistry, Metal nanoparticle-decorated titanium dioxide

Abstract: A set of metal nanoparticle-decorated titanium dioxide (Mx/TiO2; where x is the percent by mass,%) photocatalysts was prepared via the sol-immobilization in order to enhance the simultaneous hydrogen (H2) production and pollutant reduction from real biodiesel wastewater. Effect of the metal nanoparticle (NP) type (M = Ni, Au, Pt or Pd) and, for Pd, the amount (1 %-4 %) decorated on the surface of thermal treated commercial TiO2 (T400) was evaluated. The obtained results demonstrated that both the type and amount of decorated metal NPs did not significantly affect the pollutant reduction, measured in terms of the reduction of chemical oxygen demand (COD), biological oxygen demand (BOD) and oil & grease levels, but they affected the H2 production rate from both deionized water and biodiesel wastewater, which can be ranked in the order of Pt1/T400 > Pd1/T400 > Au1/T400 > Ni1/T400. This was attributed to the high difference in work function between Pt and the parent T400. However, the difference between Pt1/T400 and Pd1/T400 was not great and so from an economic consideration, Pd/TiO2 was selected as appropriate for further evaluation. Among the four different Pdx/TiO2 photocatalysts, the Pd3/TiO2 demonstrated the highest activity and gave a high rate of H2 production (up to 135 mmol·h-1) with a COD, BOD and oil & grease reduction of 30.3%, 73.7% and 58.0%, respectively.

Key words: Hydrogen production, Wastewater, Remediation, Photochemistry, Metal nanoparticle-decorated titanium dioxide