H2020Индивидуална стипендия2019–2021

H2O-SPLIT · Carbon-Oxynitride Coupled Artificial Photosynthesis System For Solar Water Splitting Beyond 600 nm

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2019-05-01 → 2021-04-30
Финансиране от ЕС: 171 461 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Нови фотокатализатори от въглерод и оксинитрид се тестват за разцепване на вода до водород и кислород чрез слънчева светлина. Това помага за по-ефективното използване на видимата светлина, вместо само на малката част от слънчевия спектър, която е ултравиолетова.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Carbon-Oxynitride Coupled Artificial Photosynthesis System For Solar Water Splitting Beyond 600 nm

The depletion of fossil fuels and serious environmental problems have urged modern society to search for renewable energy by utilizing abundant solar energy. Although hydrogen is considered as a zero-emission energy carrier, its current worldwide production heavily relies on fossil fuels (95%). In nature, oxygenic photosynthesis splits water into oxygen, protons and electrons, which reduce carbon dioxide and generate carbohydrates. In analogy, artificial photosynthesis, pioneered by Fujishima and Honda in early 70’s, targets the splitting of water into oxygen and hydrogen on a semiconductor in the photoelectrochemical cell by applying an external bias. Although metal oxide-based photocatalysts have shown high photocatalytic activity and excellent chemical stability for water splitting for green hydrogen generation, they can only function under UV light due to their large optical band gap energy. It is well known that UV light makes up only a small portion (5%) of the total solar energy, making an insufficient use of solar energy. On the other hand, visible light makes up about 52% of the total solar energy. Therefore, it is necessary to develop visible-light-active photocatalysts to efficiently utilize solar energy. In this project, we aimed at developing novel carbon-oxynitride coupled artificial photosynthesis system for solar water splitting beyond 600 nm. This aim was met by setting four scientific objectives: (i) to engineer the band structure of BaTaO2N by doping; (ii) to study the dimensional effect of carbon allotrope on water splitting of BaTaO2N; (iii) to evaluate solar water splitting efficiency, photo-stability, and scalability of the carbon-BaTaO2N; and (iv) to design a monolithically integrated photocatalyst.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The main goal of this project, through which the Experienced Researcher will develop new scientific, entrepreneurial and transferable skills by advanced training, is to develop novel carbon-oxynitride coupled artificial photosynthesis system for solar water splitting beyond 600 nm. As a member of the 600 nm-class photocatalysts family, BaTaO2N has recently demonstrated the solar-to-hydrogen conversion efficiency of 0.7% at 1.0 VRHE. To further enhance the conversion efficiency and photostability of BaTaO2N for future application, the present project challenges the modern scientific-engineering concepts for coupling BaTaO2N with universal, inexpensive, and unique carbon allotropes. Can all carbon allotropes be integrated to form efficient, inexpensive, photostable, and scalable artificial photosynthesis system for solar water splitting beyond 600 nm? To give an answer, the this project has four scientific objectives: (i) to engineer the band structure of BaTaO2N by p-type doping for overall water splitting; (ii) to study the dimensional effect of carbon allotrope (0D-fullerene, 1D-nanotubes, 2D-graphene, and 3D-nanohorns) on solar water splitting of BaTaO2N; (iii) to evaluate solar water splitting efficiency, photo-stability, and scalability of the carbon-BaTaO2N composite; and (iv) to design a monolithically integrated photocatalyst module (device) based on the most suitable carbon allotrope and doped BaTaO2N. Having strong fundamental, applied, and multidisciplinary nature, this project has a potential capacity to raise the competitiveness and excellence of the European Photocatalysis Science and Technology. As today Europe continues to lead the world on climate action with its roadmap to moving to a competitive low-carbon economy by 2050, this project focusing on efficient, inexpensive and sustainable production of renewable hydrogen energy by solar water splitting is in line with EU’s climate action and will contribute to the knowledge-based economy of Europe.

Оригинален текст от CORDIS (на английски).

Участници

TECHNISCHE UNIVERSITAT BERLIN · BerlinКоординаторГермания