In situ topotactic fabrication of direct Z-scheme 2D/2D ZnO/ZnxCd1−xS single crystal nanosheet heterojunction for efficient photocatalytic water splitting

2018 ◽  
Vol 8 (24) ◽  
pp. 6458-6467 ◽  
Author(s):  
Jingjing Shi ◽  
Shuangde Li ◽  
Fengming Wang ◽  
Yanmei Li ◽  
Lina Gao ◽  
...  

The 2D/2D ZnO/ZnxCd1−xS single crystal nanosheet heterojunction exhibited high-performance hydrogen production activity.

2017 ◽  
Vol 5 (21) ◽  
pp. 10591-10598 ◽  
Author(s):  
Xinzheng Yue ◽  
Shasha Yi ◽  
Runwei Wang ◽  
Zongtao Zhang ◽  
Shilun Qiu

The well-designed Mo2C/TiO2 hierarchical configuration exhibits extremely high photocatalytic H2 production activity from water splitting.


2019 ◽  
Vol 43 (17) ◽  
pp. 6753-6764 ◽  
Author(s):  
Qiannan Li ◽  
Yuguo Xia ◽  
Kangliang Wei ◽  
Xiaotong Ding ◽  
Shun Dong ◽  
...  

Surface polarization promotes the charge separation efficiency of PCN/PANI/BTO ternary heterojunction, resulting in an enhanced visible-light photocatalytic hydrogen production activity.


2014 ◽  
Vol 2 (45) ◽  
pp. 19260-19267 ◽  
Author(s):  
Sujuan Hu ◽  
Bo Chi ◽  
Jian Pu ◽  
Li Jian

Novel In2O3/La2Ti2O7 nanostructured heterojunction photocatalysts can promote the fast separation of photogenerated carriers and improve photocatalytic water splitting H2 production.


2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Fuying Li ◽  
Yin Huang ◽  
Hongling Peng ◽  
Yu Cao ◽  
Yu Niu

Improving the efficiency of photocatalytic water splitting to produce hydrogen is currently a hot topic in research. TiO2 nanosheets are a good carrier of photocatalytic materials and have become attractive materials in the new century because of their high active surface exposure characteristics and special morphology. Considering the advantages and disadvantages of conventional chemical and physical methods that are used for preparing TiO2 nanosheets, an optimized scheme for the preparation of TiO2 nanosheets via hydrothermal calcination was proposed. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and UV-visible diffuse reflection absorption spectra (DRS) were used to characterize the structure and morphology of the TiO2 nanosheets, and differences in the photocatalytic water splitting hydrogen production activity of the different calcination temperatures were compared. The suitable calcination temperature of the TiO2 nanosheets was 400°C, and the hydrogen production rate was 270 μmol/h, which indicated that the sheet structure was beneficial for improving the photocatalytic water splitting hydrogen production performance of the material. It is hoped that this work will support the regulation of the surface morphology and surface modification of nanomaterials.


2015 ◽  
Vol 3 (18) ◽  
pp. 10060-10068 ◽  
Author(s):  
Yijun Yang ◽  
Ye Yao ◽  
Liu He ◽  
Yeteng Zhong ◽  
Ying Ma ◽  
...  

Enhanced and stable photocatalytic activity upon water splitting was demonstrated in a series of TiO2–carbon hybrid nanomaterials, which were derived from oleylamine wrapped ultrathin TiO2 nanosheets.


2020 ◽  
Vol 10 (2) ◽  
pp. 304-310 ◽  
Author(s):  
Hicham Idriss

For many decades hydrogen production from water by photocatalytic methods has been pursued over a variety of semiconductor powder catalysts featuring many structures and compositions. The stoichiometric formation of molecular hydrogen and oxygen has stayed largely elusive.


2020 ◽  
Author(s):  
Pushkal Sharma ◽  
Cheng-Ting Lee ◽  
Jeffrey Chi-Sheng Wu

<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>


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