화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.105, 539-548, January, 2022
DOI10.1016/j.jiec.2021.10.012  Export Citation
Carbon nanotubes loaded N,S-codoped TiO2: Heterojunction assembly for enhanced integrated adsorptive-photocatalytic performance
Maira Shabir1, Nasir Shezad1, Iqrash Shafiq1, Ibrahim M. Maafa2, Parveen Akhter3, Kshaf Azam1, Ashfaq Ahmed1, 4, See Hoon Lee5, Young-Kwon Park4, †, and Murid Hussain1, †
  • 1Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
  • 2Department of Chemical Engineering, College of Engineering, Jazan University, Jazan 45142, Saudi Arabia
  • 3Department of Chemistry, The University of Lahore, 1-km Defence Road, Off Raiwind Road, Lahore, Pakistan
  • 4School of Environmental Engineering, University of Seoul, Seoul 02504, Republic of Korea
  • 5Department of Mineral Resource and Energy Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
E-mail:,
A visible-light active N,S-codoped TiO2 incorporated with carbon nanotubes (CNTs) was synthesized by a multicomponent heterojunction scheme. The synthesized photocatalysts was examined by several analysis techniques. The conventional TiO2, N-doped TiO2, TiO2/CNT and N,S-codoped TiO2 were also synthesized, characterized, and integrated adsorptive-photocatalytic degradation rates were subsequently compared and assessed, for comparative purposes as reference photocatalysts. The parametric study was also carried out to investigate the effect of various operational factors, such as solution pH, the photocatalyst loading and initial concentration of dye solution, on the adsorptive-photocatalytic performance. The best activity performance was attained with the N,S-TiO2/CNTs nanocomposite due to the synergistic effect of ternary components caused by the incorporation of dopants and CNTs in TiO2 lattice, providing a high number of adsorption sites and facilitating the effective separation of photogenerated charge carriers and minimal recombination rates. N,S-TiO2/CNTs exhibited around three times higher photocatalytic performance than that of the binary composites, i.e., N-TiO2, TiO2/CNTs, N,S-TiO2, and about four times higher than the conventional TiO2. Furthermore, the superior nanocomposites were also investigated for their recyclability for five consecutive cycles.
Keywords:Adsorption-photocatalysis integration;Ternary nanocomposite;Heterojunction scheme;Carbon nanotubes;Parametric study
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