Synthesis of Ni-and N-doped titania nanotube arrays for photocatalytic hydrogen production from glycerol–water solutions

Slamet, Dwi Annisa Agriyfani, Tiur Elysabeth, Muhammad Ibadurrohman, Muhammad Nurdin

Research output: Contribution to journalArticlepeer-review

Abstract

Synthesis of Ni-and N-doped Titania Nanotube Arrays (Ni-N-TiNTAs) was conducted to produce photocatalysts for hydrogen production from a glycerol–water mixture. Ni-N-TiNTAs were synthesized in two steps, namely anodization and chemical reduction. Ti foil was anodized at 50 V for two h in an electrolyte solution containing 0.2% urea as a source of N atoms. Ni doping (at various content of 5%, 10%, 15%, and 20% wt) was performed by one-hour chemical reduction with sodium borohydride as a reducing agent. The photocatalyst was annealed at different temperatures, i.e., 500C, 550C, and 600C under 60 mL/min N2 gas for two h. On the basis of X-ray Diffraction (XRD) patterns, Ni-N-TiNTAs are mostly of anatase crystallite phase when annealed at 500C and 550C, while that of rutile was observable when calcination was done at 600C. The morphology of the photocatalysts was scrutinized by means of Field Emission Scanning Electron Microscopy (FESEM) imaging, which reveals nanotubular structures, with elemental composition measured by Energy Dispersive X-ray (EDX). The bandgap of the photocatalysts was analyzed using Ultraviolet Diffuse Reflectance Spectroscopy (UV DRS), which showed a lower value for the case of Ni-N-TiNTAs as compared to those of TiNTAs and N-TiNTAs. Photocatalytic tests showed that the highest amount of hydrogen produced (ca. 30973 µmol/m2) was obtained in the case of Ni-N-TiNTAs with a Ni content of 10wt%.

Original languageEnglish
Article number1234
Pages (from-to)1-17
Number of pages17
JournalCatalysts
Volume10
Issue number11
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Glycerol–water
  • Hydrogen production
  • Ni doped
  • Titania nanotube

Fingerprint Dive into the research topics of 'Synthesis of Ni-and N-doped titania nanotube arrays for photocatalytic hydrogen production from glycerol–water solutions'. Together they form a unique fingerprint.

Cite this