Pharmaceutical pollutant as sacrificial agent for sustainable synergistic water treatment and hydrogen production via novel Z- scheme Bi7O9I3/B4C heterojunction photocatalysts

2021 ◽  
pp. 117652
Author(s):  
Anamika Rana ◽  
Amit Kumar ◽  
Gaurav Sharma ◽  
Mu. Naushad ◽  
Chinna Bathula ◽  
...  
Keyword(s):  
Water Treatment ◽  
Hydrogen Production ◽  
Sacrificial Agent

scholarly journals Sunlight-driven photocatalytic hydrogen production from water using metal-doped strontium titanate perovskite

2020 ◽  
Author(s):  
Pushkal Sharma ◽  
Cheng-Ting Lee ◽  
Jeffrey Chi-Sheng Wu
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Strontium Titanate ◽  
Experimental Studies ◽  
Light Response ◽  
Theoretical Studies ◽  
Photocatalytic Water Splitting ◽  
Visible Light Response ◽  
Sacrificial Agent ◽  
Metal Doped

<div>The effects of various metal dopants on the photocatalytic water splitting activity of SrTiO<sub>3</sub> -based photocatalysts were investigated using experimental studies. The SrTiO<sub>3</sub>:Rh (1%) has been found to give the best efficiency in water splitting out of the various metal-doped samples studied. However, the same host doped with other metal dopants such as Fe, V, Ga, and Sb leads to negligible hydrogen evolution even when at least Fe has a better visible light response. Our results accompanied by previously conducted theoretical studies by our group explain the high photocatalytic water splitting activity of Rh doped SrTiO<sub>3 </sub>. Furthermore, the effects of the amount of catalyst, the proportion of sacrificial agent and pH were studied for the SrTiO<sub>3</sub>:Rh (1 mol%) along with studying its activity with seawater.</div>

scholarly journals Photoelectrocatalytic Hydrogen Production Using a TiO2/WO3 Bilayer Photocatalyst in the Presence of Ethanol as a Fuel

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 976 ◽  
Author(s):  
Panagiotis Marios Adamopoulos ◽  
Ioannis Papagiannis ◽  
Dimitrios Raptis ◽  
Panagiotis Lianos
Keyword(s):  
Hydrogen Production ◽  
Surface Recombination ◽  
Photoelectrochemical Cell ◽  
Photon Absorption ◽  
Bilayer Film ◽  
Carbon Paper ◽  
Faradaic Efficiency ◽  
Charge Densities ◽  
Titania Layer ◽  
Sacrificial Agent

Photoelectrocatalytic hydrogen production was studied by using a photoelectrochemical cell where the photoanode was made by depositing on FTO electrodes either a nanoparticulate WO3 film alone or a bilayer film made of nanoparticulate WO3 at the bottom covered with a nanoparticulate TiO2 film on the top. Both the electric current and the hydrogen produced by the photoelectrocatalysis cell substantially increased by adding the top titania layer. The presence of this layer did not affect the current-voltage characteristics of the cell (besides the increase of the current density). This was an indication that the flow of electrons in the combined semiconductor photoanode was through the WO3 layer. The increase of the current was mainly attributed to the passivation of the surface recombination sites on WO3 contributing to the limitation of charge recombination mechanisms. In addition, the top titania layer may have contributed to photon absorption by back scattering of light and thus by enhancement of light absorption by WO3. Relatively high charge densities were recorded, owing both to the improvement of the photoanode by the combined photocatalyst and to the presence of ethanol as the sacrificial agent (fuel), which affected the recorded current by “current doubling” phenomena. Hydrogen was produced under electric bias using a simple cathode electrode made of carbon paper carrying carbon black as the electrocatalyst. This electrode gave a Faradaic efficiency of 58% for hydrogen production.

Effect of alcohol sacrificial agent on the performance of Cu/TiO2 photocatalysts for UV-driven hydrogen production

2020 ◽  
Vol 602 ◽  
pp. 117703 ◽  
Author(s):  
Wan-Ting Chen ◽  
Yusong Dong ◽  
Pooja Yadav ◽  
Robert D. Aughterson ◽  
Dongxiao Sun-Waterhouse ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Tio2 Photocatalysts ◽  
Sacrificial Agent

scholarly journals Bimetallic zeolite-imidazole framework-based heterostructure with enhanced photocatalytic hydrogen production activity

RSC Advances ◽  
2021 ◽  
Vol 11 (16) ◽  
pp. 9048-9056
Author(s):  
Nayab Arif ◽  
Ye-Zhan Lin ◽  
Kai Wang ◽  
Yi-Chuan Dou ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Charge Carriers ◽  
Utilization Efficiency ◽  
Photocatalytic Hydrogen Production ◽  
Production Activity ◽  
Sacrificial Agent

The g-C3N4-MoS2 could facilitate the separation as well as utilization efficiency of the photo-generated charge carriers in the ZnM-ZIFs, and hence improved the photocatalytic H2 production with and without sacrificial agent.

scholarly journals Sunlight-driven photocatalytic hydrogen production from water using metal-doped strontium titanate perovskite

2020 ◽  
Author(s):  
Pushkal Sharma ◽  
Cheng-Ting Lee ◽  
Jeffrey Chi-Sheng Wu
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Strontium Titanate ◽  
Experimental Studies ◽  
Light Response ◽  
Theoretical Studies ◽  
Photocatalytic Water Splitting ◽  
Visible Light Response ◽  
Sacrificial Agent ◽  
Metal Doped

<div>The effects of various metal dopants on the photocatalytic water splitting activity of SrTiO<sub>3</sub> -based photocatalysts were investigated using experimental studies. The SrTiO<sub>3</sub>:Rh (1%) has been found to give the best efficiency in water splitting out of the various metal-doped samples studied. However, the same host doped with other metal dopants such as Fe, V, Ga, and Sb leads to negligible hydrogen evolution even when at least Fe has a better visible light response. Our results accompanied by previously conducted theoretical studies by our group explain the high photocatalytic water splitting activity of Rh doped SrTiO<sub>3 </sub>. Furthermore, the effects of the amount of catalyst, the proportion of sacrificial agent and pH were studied for the SrTiO<sub>3</sub>:Rh (1 mol%) along with studying its activity with seawater.</div>

scholarly journals Unravelling the pH-dependence of a molecular photocatalytic system for hydrogen production

2015 ◽  
Vol 6 (8) ◽  
pp. 4855-4859 ◽  
Author(s):  
Anna Reynal ◽  
Ernest Pastor ◽  
Manuela A. Gross ◽  
Shababa Selim ◽  
Erwin Reisner ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Ph Dependence ◽  
Photocatalytic System ◽  
Optimum Ph ◽  
Sacrificial Agent

The electron-donating ability of the sacrificial agent and the protonation of the catalyst determine the optimum pH for hydrogen production.

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