• 文献标题:   The removal enhancement of organic contaminations and optimization of the photocatalytic efficiency by Box-Behnken design using ZnO-TiO2/porous graphene aerogel
  • 文献类型:   Article, Early Access
  • 作  者:   BUU TT, NGOC BK, QUAN VM, HAI ND, NAM NTH, HIEU NH
  • 作者关键词:   graphene aerogel, photocatalysi, boxbehnken model, crystal violet, paranitrophenol
  • 出版物名称:   ENVIRONMENTAL SCIENCE POLLUTION RESEARCH
  • ISSN:   0944-1344 EI 1614-7499
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1007/s11356-023-28100-z EA JUN 2023
  • 出版年:   2023

▎ 摘  要

In this study, zinc oxide-titanium dioxide/graphene aerogel (ZnO-TiO2/GA) was successfully synthesized through a simple and cost-effective hydrothermal self-assembly process. Besides, the surface response model and the experimental design according to the Box-Behnken model were selected to determine the optimal removal efficiency for crystal violet (CV) dye and para-nitrophenol (p-NP) phenolic compound. According to the obtained results, the highest degradation efficiency for CV dye of 99.6% was obtained under the following conditions: pH 6.7, CV concentration of 23.0 mg/L, and catalyst dose of 0.30 g/L. For p-NP, the degradation efficiency reached 99.1% under the following conditions: H2O2 volume of 1.25 mL, pH 6.8, and catalyst dose of 0.35 g/L. Therewithal, kinetic models of adsorption-photodegradation, thermodynamic adsorption, and free radical scavenging experiments were also investigated to propose the specific mechanisms involving the removal of CV dye and p-NP. According to the aforementioned results, the study provided a resulting ternary nanocomposite with great removal performance for water pollutants via the synergetic effects of adsorption and photodegradation processes.