scholarly journals Ordered Mesoporous TiO2 Gyroids: Effects of Pore Architecture and Nb-Doping on Photocatalytic Hydrogen Evolution under UV and Visible Irradiation

2018 ◽  
Vol 8 (36) ◽  
pp. 1802566 ◽  
Author(s):  
Tobias Sebastian Dörr ◽  
Leonie Deilmann ◽  
Greta Haselmann ◽  
Alexey Cherevan ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution ◽  
Pore Architecture ◽  
Ordered Mesoporous ◽  
Visible Irradiation ◽  
Nb Doping

An Efficient Visible Photocatalytic System Containing Eosin Y, Multiwalled Carbon Nanotubes and CuO for H2 Evolution from Water

2011 ◽  
Vol 239-242 ◽  
pp. 1686-1689 ◽  
Author(s):  
Jing Zhang ◽  
Xue Ling Zhao ◽  
Shi Zhao Kang ◽  
Ping Ping Yao ◽  
Xiang Qing Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Multiwalled Carbon Nanotubes ◽  
Average Rate ◽  
Eosin Y ◽  
Multiwalled Carbon ◽  
Photocatalytic Hydrogen Evolution ◽  
Photocatalytic System ◽  
Visible Irradiation

In this work, a visible photocatalytic system containing Eosin Y, multiwalled carbon nanotubes and CuO was prepared. The photocatalytic hydrogen evolution from water over this system was studied using triethanolamine (TEA) as a sacrificial reagent. The results indicated that it was an efficient photocatalyst with an average rate of H2 evolution of 373 mmol·h-1·g-1 during first three hours under visible irradiation.

Photocatalytic hydrogen evolution over mesoporous TiO2/metal nanocomposites

2008 ◽  
Vol 198 (2-3) ◽  
pp. 126-134 ◽  
Author(s):  
Anna V. Korzhak ◽  
Natalia I. Ermokhina ◽  
Alexander L. Stroyuk ◽  
Viktor K. Bukhtiyarov ◽  
Alexandra E. Raevskaya ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Nanocomposites

Ordered Mesoporous ZnGa2O4 for Photocatalytic Hydrogen Evolution

2021 ◽  
Author(s):  
Xiaomei Yang ◽  
Jinmiao Ma ◽  
Ru Guo ◽  
Xiaochen Fan ◽  
Ping Xue ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Mixed Oxide ◽  
Considerable Effort ◽  
Photocatalytic Hydrogen Evolution ◽  
Zinc Gallate ◽  
Ordered Mesoporous ◽  
Wide Range

Zinc gallate (ZnGa2O4) materials as a mixed oxide of d10 metal zinc and gallium have a wide range of applications because of their intriguing properties. Considerable effort have been devoted...

Atomic defects in ultra-thin mesoporous TiO2 enhance photocatalytic hydrogen evolution from water splitting

2020 ◽  
Vol 513 ◽  
pp. 145723 ◽  
Author(s):  
Hongjin Li ◽  
Sujuan Wu ◽  
Zachary D. Hood ◽  
Jianguo Sun ◽  
Biao Hu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Mesoporous Tio2 ◽  
Photocatalytic Hydrogen Evolution

scholarly journals PEG-stabilized coaxial stacking of two-dimensional covalent organic frameworks for enhanced photocatalytic hydrogen evolution

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ting Zhou ◽  
Lei Wang ◽  
Xingye Huang ◽  
Junjuda Unruangsri ◽  
Hualei Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Unique Feature ◽  
Layer By Layer ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Innovative Strategy ◽  
Photocatalytic Hydrogen Evolution ◽  
Visible Irradiation ◽  
Periodic Frameworks ◽  
Post Functionalization

AbstractTwo-dimensional covalent organic frameworks (2D COFs) featuring periodic frameworks, extended π-conjugation and layered stacking structures, have emerged as a promising class of materials for photocatalytic hydrogen evolution. Nevertheless, the layer-by-layer assembly in 2D COFs is not stable during the photocatalytic cycling in water, causing disordered stacking and declined activity. Here, we report an innovative strategy to stabilize the ordered arrangement of layered structures in 2D COFs for hydrogen evolution. Polyethylene glycol is filled up in the mesopore channels of a β-ketoenamine-linked COF containing benzothiadiazole moiety. This unique feature suppresses the dislocation of neighbouring layers and retains the columnar π-orbital arrays to facilitate free charge transport. The hydrogen evolution rate is therefore remarkably promoted under visible irradiation compared with that of the pristine COF. This study provides a general post-functionalization strategy for 2D COFs to enhance photocatalytic performances.

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