Photocatalytic hydrogen production from glycerol-water mixture over Pt-N-TiO2nanotube photocatalyst

2012 ◽  
Vol 37 (11) ◽  
pp. 1372-1381 ◽  
Author(s):  
Slamet ◽  
Dewi Tristantini ◽  
Valentina ◽  
Muhammad Ibadurrohman
Keyword(s):  
Hydrogen Production ◽  
Water Mixture ◽  
Glycerol Water ◽  
Photocatalytic Hydrogen Production

scholarly journals Hydrogen Production from Glycerol Photoreforming on TiO2/HKUST-1 Composites: Effect of Preparation Method

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 338 ◽  
Author(s):  
Fabián M. Martínez ◽  
Elim Albiter ◽  
Salvador Alfaro ◽  
Ana L. Luna ◽  
Christophe Colbeau-Justin ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Diffuse Reflectance Spectroscopy ◽  
Synergetic Effect ◽  
Recombination Reaction ◽  
Water Mixture ◽  
Electron Recombination ◽  
Glycerol Water ◽  
Time Resolved ◽  
Inorganic Semiconductors ◽  
Simulated Solar Light

Coupling metal-organic frameworks (MOFs) with inorganic semiconductors has been successfully tested in a variety of photocatalytic reactions. In this work we present the synthesis of TiO2/HKUST-1 composites by grinding, solvothermal, and chemical methods, using different TiO2 loadings. These composites were used as photocatalysts for hydrogen production by the photoreforming of a glycerol-water mixture under simulated solar light. Several characterization techniques were employed, including X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), infrared spectroscopy (FTIR), and time-resolved microwave conductivity (TRMC). A synergetic effect was observed with all TiO2/HKUST-1 composites (mass ratio TiO2/MOF 1:1), which presented higher photocatalytic activity than that of individual components. These results were explained in terms of an inhibition of the charge carrier (hole-electron) recombination reaction after photoexcitation, favoring the electron transfer from TiO2 to the MOF and creating reversible Cu1+/Cu0 entities useful for hydrogen production.

scholarly journals Synthesis of Ni- and N-Doped Titania Nanotube Arrays for Photocatalytic Hydrogen Production from Glycerol–Water Solutions

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1234
Author(s):  
Tiur Elysabeth ◽  
Dwi Annisa Agriyfani ◽  
Muhammad Ibadurrohman ◽  
Muhammad Nurdin ◽  
Slamet
Keyword(s):  
Hydrogen Production ◽  
Diffuse Reflectance Spectroscopy ◽  
Chemical Reduction ◽  
Nanotube Arrays ◽  
Water Mixture ◽  
Glycerol Water ◽  
X Ray ◽  
Titania Nanotube Arrays ◽  
Titania Nanotube ◽  
Doped Titania

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., 500 °C, 550 °C, and 600 °C 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 500 °C and 550 °C, while that of rutile was observable when calcination was done at 600 °C. 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%.

scholarly journals Solar Hydrogen from Glycerol-Water Mixture

2021 ◽  
Vol 8 ◽  
pp. 1-5
Author(s):  
Chong Fai Kait ◽  
Ela Nurlaela
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Glycolic Acid ◽  
Water System ◽  
Light Illumination ◽  
Water Mixture ◽  
Glycerol Water ◽  
Solar Hydrogen ◽  
Visible Light Illumination ◽  
Solar Hydrogen Production

The photocatalytic activity of titania supported bimetallic Cu-Ni photocatalysts were assessed for hydrogen production from water and also a mixture of glycerol-water system under visible light illumination. Addition of 2.0 mL glycerol to 8.0 mL water enhanced the solar hydrogen production from 6.1 mL to 9.5 mL. If metal was not incorporated onto TiO2 , the hydrogen production was minimal, 2.0 mL after 2 hr reaction. The band gap for bimetallic Cu-Ni/TiO2 was 2.78 eV compared to 3.16 eV for TiO2 . Photooxidation of glycerol produced glyceraldehyde, glycolic acid and oxalic acid.

Efficient photocatalytic hydrogen production of ternary composite constituted by cubic CdS, MoS2 and activated carbon

2021 ◽  
Vol 874 ◽  
pp. 159930
Author(s):  
Jiangfan Sun ◽  
Mingcai Yin ◽  
Yixian Li ◽  
Kaiyue Liang ◽  
Yaoting Fan ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Hydrogen Production ◽  
Ternary Composite ◽  
Photocatalytic Hydrogen Production ◽  
Cubic Cds
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