Copper oxide nanoparticle made by flame spray pyrolysis for photoelectrochemical water splitting – Part I. CuO nanoparticle preparation

2012 ◽  
Vol 37 (6) ◽  
pp. 4871-4879 ◽  
Author(s):  
Chia-Ying Chiang ◽  
Kosi Aroh ◽  
Sheryl H. Ehrman
Keyword(s):  
Copper Oxide ◽  
Spray Pyrolysis ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Flame Spray Pyrolysis ◽  
Flame Spray ◽  
Copper Oxide Nanoparticle ◽  
Nanoparticle Preparation ◽  
Oxide Nanoparticle ◽  
Cuo Nanoparticle

Optoelectronics properties of tungsten oxide nanoparticle networks deposited by flame spray pyrolysis

MRS Advances ◽  
2018 ◽  
Vol 3 (57-58) ◽  
pp. 3391-3396
Author(s):  
Domenico Caputo ◽  
Shaul Ajò ◽  
Giampiero de Cesare ◽  
Alessio Buzzin ◽  
Renheng Bo ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Spray Pyrolysis ◽  
Conduction Band ◽  
Applied Voltage ◽  
Energy Gap ◽  
Flame Spray Pyrolysis ◽  
Flame Spray ◽  
Current Voltage ◽  
Oxide Nanoparticle

AbstractIn this work, we present the optoelectronic characterization of pure tungsten oxide nanoparticle networks synthesized and self-assembled by flame spray pyrolysis. Current-voltage measurements performed in dark conditions indicate the presence of trapping and de-trapping phenomena from defects inside the energy gap. The presence of defects is confirmed by the time evolution of the photocurrent, measured under monochromatic radiation at 420 nm. After illuminating the WO3 films with light, the current increases exponentially with a time constant independent on the applied voltage. This behavior is ascribed to the presence of defects lying at 1.1 eV below the conduction band of WO3 (bandgap of ca. 2.9 eV). When the illumination is terminated, the photocurrent shows an exponential decrease, once again independently on the applied voltage. The defect level corresponding to this relaxation process corresponds to 0.92eV below the conduction band.

CuAl2O4–CuO–Al2O3 catalysts prepared by flame-spray pyrolysis for glycerol hydrogenolysis

2021 ◽  
pp. 111426
Author(s):  
Naphaphan Kunthakudee ◽  
Pongtanawat Khemthong ◽  
Chuleeporn Luadthong ◽  
Joongjai Panpranot ◽  
Okorn Mekasuwandumrong ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Flame Spray Pyrolysis ◽  
Flame Spray ◽  
Glycerol Hydrogenolysis

Ultrafast Synthesis of High Entropy Oxide Nanoparticles by Flame Spray Pyrolysis

Langmuir ◽  
2021 ◽  
Author(s):  
Abhijit H. Phakatkar ◽  
Mahmoud Tamadoni Saray ◽  
Md Golam Rasul ◽  
Lioudmila V. Sorokina ◽  
Timothy G. Ritter ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Flame Spray Pyrolysis ◽  
Oxide Nanoparticles ◽  
Flame Spray ◽  
High Entropy

scholarly journals Double-Nozzle Flame Spray Pyrolysis as a Potent Technology to Engineer Noble Metal-TiO2 Nanophotocatalysts for Efficient H2 Production

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 817
Author(s):  
Maria Solakidou ◽  
Yiannis Georgiou ◽  
Yiannis Deligiannakis
Keyword(s):  
Spray Pyrolysis ◽  
Noble Metal ◽  
H2 Production ◽  
Flame Spray Pyrolysis ◽  
Flame Spray ◽  
Scale Production ◽  
Efficient Technology ◽  
Tio2 Photocatalysts ◽  
Surface Dispersion ◽  
Tio2 Matrix

Noble metal-TiO2 nanohybrids, NM0-TiO2, (NM0 = Pt0, Pd0, Au0, Ag0) have been engineered by One-Nozzle Flame Spray Pyrolysis (ON-FSP) and Double-Nozzle Flame Spray Pyrolysis (DN-FSP), by controlling the method of noble metal deposition to the TiO2 matrix. A comparative screening of the two FSP methods was realized, using the NM0-TiO2 photocatalysts for H2 production from H2O/methanol. The results show that the DN-FSP process allows engineering of more efficient NM0-TiO2 nanophotocatalysts. This is attributed to the better surface-dispersion and narrower size-distribution of the noble metal onto the TiO2 matrix. In addition, DN-FSP process promoted the formation of intraband states in NM0-TiO2, lowering the band-gap of the nanophotocatalysts. Thus, the present study demonstrates that DN-FSP process is a highly efficient technology for fine engineering of photocatalysts, which adds up to the inherent scalability of Flame Spray Pyrolysis towards industrial-scale production of nanophotocatalysts.

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