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Photo- and Photoelectro-Chemical Processes for Energy Applications

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: closed (29 February 2020) | Viewed by 4755

Special Issue Editor


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Guest Editor
Chemical and Biomolecular Department, Universidad de Cantabria, Santander, Spain
Interests: electro-and-photocatalytic reduction of CO2; membrane separation processes; ionic liquids; environmental sustainability assessment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues

The conversion of sunlight into chemical energy—i.e. to drive thermodynamically uphill reactions such as the conversion of CO2 (also known as artificial photosynthesis) and the splitting of water to produce H2 by photocatalytic and photoelectrocatalytic reactions—can provide a package solution for the current negative impacts of global warming and growing energy demand using an inexhaustible energy source. Despite the longstanding interest in these processes and the extensive research efforts so far, challenges remain in improving the activity and selectivity for both reactions in energy applications and existing demonstrations are limited to small setups. 

In line with the increasing attention that photo-activated processes have received in the last year, the Special Issue "Photo- and photoelectro-chemical processes for energy applications", will report on the latest and most important fundamental and technological advances in water splitting and CO2 valorization, mainly focused on (but not limited to) two aspects: (i) Innovative photoactive materials, including improved synthesis and characterization methods, and (ii) efficient photoreactor geometries to enhance light harvesting and mass transfer. Authors are invited to submit their latest results; original papers, communications and reviews are welcomed.

Dr. Jonathan Albo
Guest Editor

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Keywords

  • photocatalysis
  • photoelectrocatalysis
  • photoactive materials
  • photoreactors
  • chemical energy

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Published Papers (1 paper)

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Research

11 pages, 4010 KiB  
Article
Interfacial Charge Transfer in MoS2/TiO2 Heterostructured Photocatalysts: The Impact of Crystal Facets and Defects
by Tingcha Wei, Woon Ming Lau, Xiaoqiang An and Xuelian Yu
Molecules 2019, 24(9), 1769; https://doi.org/10.3390/molecules24091769 - 7 May 2019
Cited by 19 | Viewed by 4378
Abstract
One of the most challenging issues in photocatalytic hydrogen evolution is to efficiently separate photocharge carriers. Although MoS2 loading could effectively improve the photoactivity of TiO2, a fundamental understanding of the charge transfer process between TiO2 and MoS2 [...] Read more.
One of the most challenging issues in photocatalytic hydrogen evolution is to efficiently separate photocharge carriers. Although MoS2 loading could effectively improve the photoactivity of TiO2, a fundamental understanding of the charge transfer process between TiO2 and MoS2 is still lacking. Herein, TiO2 photocatalysts with different exposed facets were used to construct MoS2/TiO2 heterostructures. XPS, ESR, together with PL measurements evidenced the Type II electron transfer from MoS2 to {001}-TiO2. Differently, electron-rich characteristic of {101}-faceted TiO2 were beneficial for the direct Z-scheme recombination of electrons in TiO2 with holes in MoS2. This synergetic effect between facet engineering and oxygen vacancies resulted in more than one order of magnitude enhanced hydrogen evolution rate. This finding revealed the elevating mechanism of constructing high-performance MoS2/TiO2 heterojunction based on facet and defect engineering. Full article
(This article belongs to the Special Issue Photo- and Photoelectro-Chemical Processes for Energy Applications)
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