Mixed NaNbxTa1−xO3 perovskites as photocatalysts for H2 production

2015 ◽  
Vol 17 (3) ◽  
pp. 1735-1743 ◽  
Author(s):  
Prabhas Jana ◽  
Victor A. de la Peña O'Shea ◽  
Cristina Mata Montero ◽  
Pilar Gálvez ◽  
Patricia Pizarro ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Hydrogen Production ◽  
Solid State Reaction ◽  
H2 Production ◽  
Methanol System

Mixed perovskites NaNbxTa1−xO3 were prepared by solid state reaction (SSR) as well as by hydrothermal (Hyd) methods, and their photocatalytic activity for hydrogen production was studied using the water–methanol system following Pt photodeposition.

High‐yield synthesis of pure ZnO nanoparticles by one‐step solid‐state reaction approach for enhanced photocatalytic activity

2020 ◽  
Vol 67 (6) ◽  
pp. 1045-1053 ◽  
Author(s):  
Naveed Akhtar Shad ◽  
Muhammad Munir Sajid ◽  
Yasir Javed ◽  
Nasir Amin ◽  
Muhammad Ikram ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Zno Nanoparticles ◽  
Solid State Reaction ◽  
High Yield ◽  
One Step

Photocatalytic Hydrogen Evolution over Tantalate Photocatalysts

2006 ◽  
Vol 974 ◽  
Author(s):  
Jaturong Jitputti ◽  
Sorapong Pavasupree ◽  
Yoshikazu Suzuki ◽  
Susumu Yoshikawa
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Solid State Reaction ◽  
Sem Analysis ◽  
Catalyst Loading ◽  
Distilled Water ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution

ABSTRACTTantalate and titanate photocatalysts were prepared by solid-state reaction at 1273 K using various ratios of SrCO3, Ta2O5, and TiO2 as starting materials. The prepared solid photocatalysts were characterized using XRD and SEM analysis. These prepared tantalate and titanate photocatalysts showed high photocatalytic H2 evolution activity by water splitting without co-catalyst loading. The highest H2 evolution rate of prepared photocatalysts was found to be 138 μmolh−1 with the starting materials ratio of 2/0.5/1.5 (Sr/Ta/Ti; mol). Furthermore, this photocatalyst showed photocatalytic activity for H2 evolution from distilled water.

Photocatalytic activity of BiFeO3 in pellet form synthetized using solid state reaction and modified Pechini method

2018 ◽  
Vol 367 ◽  
pp. 390-396 ◽  
Author(s):  
Francielli Casanova Monteiro ◽  
Paloma de Jesus Cubas ◽  
Vitor Sena Kosera ◽  
João Frederico Haas Leandro Monteiro ◽  
Sérgio Toshio Fujiwara
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Solid State Reaction ◽  
Pechini Method ◽  
Modified Pechini Method ◽  
Pellet Form

Preparation of nanocrystalline Cu2O by a modified solid-state reaction method and its photocatalytic activity

2013 ◽  
Vol 107 ◽  
pp. 123-125 ◽  
Author(s):  
Longfeng Li ◽  
Wenxing Zhang ◽  
Chen Feng ◽  
Xiaowen Luan ◽  
Jian Jiang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Reaction Method

A covalently conjugated MoS2/Fe3O4 magnetic nanocomposite as an efficient & reusable catalyst for H2 production

2018 ◽  
Vol 47 (2) ◽  
pp. 287-291 ◽  
Author(s):  
Manish K. Jaiswal ◽  
Uttam Gupta ◽  
Pratap Vishnoi
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
H2 Production ◽  
Magnetic Nanocomposite ◽  
Reusable Catalyst ◽  
Free Hydrogen

Quick and easy recovery without the loss of the photocatalytic activity of the catalysing agent is an effective way to meet the challenges associated with the high cost of hazard-free hydrogen production.

scholarly journals Fabrication of ILs-Assisted AgTaO3 Nanoparticles for the Water Splitting Reaction: The Effect of ILs on Morphology and Photoactivity

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4055
Author(s):  
Julia Zwara ◽  
Anna Pancielejko ◽  
Marta Paszkiewicz-Gawron ◽  
Justyna Łuczak ◽  
Magdalena Miodyńska ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ionic Liquids ◽  
Solid State ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Sol Gel ◽  
Pt Nanoparticles ◽  
H2 Production ◽  
Solid State Reactions ◽  
Platinum Particles

The design of an active, stable and efficient photocatalyst that is able to be used for hydrogen production is of great interest nowadays. Therefore, four methods of AgTaO3 perovskite synthesis, such as hydrothermal, solvothermal, sol-gel and solid state reactions, were proposed in this study to identify the one with the highest hydrogen generation efficiency by the water splitting reaction. The comprehensive results clearly show that the solid state reaction (SSR) led to the obtainment of a sample with an almost seven times higher photocatalytic activity than the other methods. Furthermore, four ionic liquids, all possessing nitrogen in the form of organic cations (two imidazoliums with different anions, ammonium and tetrazolium), were used for the first time to prepare composites consisting of AgTaO3 modified with IL and Pt, simultaneously. The effect of the ionic liquids (ILs) and Pt nanoparticles’ presence on the structure, morphology, optical properties, elemental composition and the effectiveness of the hydrogen generation was investigated and discussed. The morphology investigation revealed that the AgTaO3 photocatalysts with the application of [OMIM]-cation based ILs created smaller granules (<500 nm), whereas [TBA] [Cl] and [TPTZ] [Cl] ILs caused the formation of larger particles (up to 2 μm). We found that various ILs used for the synthesis did not improve the photocatalytic activity of the obtained samples in comparison with pristine AgTaO3. It was detected that the compound with the highest ability for hydrogen generation under UV-Vis irradiation was the AgTaO3_0.2% Pt (248.5 μmol∙g−1), having an almost 13 times higher efficiency in comparison with the non-modified pristine sample. It is evidenced that the enhanced photocatalytic activity of modified composites originated mainly from the presence of the platinum particles. The mechanism of photocatalytic H2 production under UV-Vis light irradiation in the presence of an AgTaO3_IL_Pt composite in the water splitting reaction was also proposed.

Sign in / Sign up

Export Citation Format

Share Document