A novel photocatalyst LaOF: Facile fabrication and photocatalytic hydrogen production

Xie, Quanhua; Wang, Yu; Pan, Bao; Wang, Hemiao; Su, Wenyue

doi:10.1016/j.catcom.2012.06.019

Cited by 53 publications

(17 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solar energy can be used to convert photonic and or thermal energy that is stored in the sunlight into hydrogen. Thermochemical, photobiological and photocatalytic water splitting are some of the examples of hydrogen production from solar water splitting .…”

Section: Light‐based Hydrogen Production Methodsmentioning

confidence: 99%

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Acar

Dinçer

Naterer

2016

Int. J. Energy Res.

512

241

View full text Add to dashboard Cite

SUMMARYThis paper examines photocatalytic hydrogen production as a clean energy solution to address challenges of climate change and environmental sustainability. Advantages and disadvantages of various hydrogen production methods, with a particular emphasis on photocatalytic hydrogen production, are discussed in this paper. Social, environmental and economic aspects are taken into account while assessing selected production methods and types of photocatalysts. In the first part of this paper, various hydrogen production options are introduced and comparatively assessed. Then, solar-based hydrogen production options are examined in a more detailed manner along with a comparative performance assessment. Next, photocatalytic hydrogen production options are introduced, photocatalysis mechanisms and principles are discussed and the main groups of photocatalysts, namely titanium oxide, cadmium sulfide, zinc oxide/sulfide and other metal oxidebased photocatalyst groups, are introduced. After discussing recycling issues of photocatalysts, a comparative performance assessment is conducted based on hydrogen production processes (both per mass and surface area of photocatalysts), band gaps and quantum yields. The results show that among individual photocatalysts, on average, Au-CdS has the best performance when band gap, quantum yield and hydrogen production rates are considered. From this perspective, TiO 2 -ZnO has the poorest performance. Among the photocatalyst groups, cadmium sulfides have the best average performance, while other metal oxides show the poorest rankings, on average.

show abstract

Section: Light‐based Hydrogen Production Methodsmentioning

confidence: 99%

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Acar

Dinçer

Naterer

2016

Int. J. Energy Res.

512

241

View full text Add to dashboard Cite

show abstract

“…The combination of solar energy with plentiful water resources provides a reasonable platform for hydrogen generation which is called solar water splitting [21,22,23]. There are three approaches to split water using solar energy [24]: (1) thermochemical water splitting; (2) photobiological water splitting; and (3) photocatalytic water splitting.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Water Splitting—The Untamed Dream: A Review of Recent Advances

et al. 2016

View full text Add to dashboard Cite

Photocatalytic water splitting using sunlight is a promising technology capable of providing high energy yield without pollutant byproducts. Herein, we review various aspects of this technology including chemical reactions, physiochemical conditions and photocatalyst types such as metal oxides, sulfides, nitrides, nanocomposites, and doped materials followed by recent advances in computational modeling of photoactive materials. As the best-known catalyst for photocatalytic hydrogen and oxygen evolution, TiO 2 is discussed in a separate section, along with its challenges such as the wide band gap, large overpotential for hydrogen evolution, and rapid recombination of produced electron-hole pairs. Various approaches are addressed to overcome these shortcomings, such as doping with different elements, heterojunction catalysts, noble metal deposition, and surface modification. Development of a photocatalytic corrosion resistant, visible light absorbing, defect-tuned material with small particle size is the key to complete the sunlight to hydrogen cycle efficiently. Computational studies have opened new avenues to understand and predict the electronic density of states and band structure of advanced materials and could pave the way for the rational design of efficient photocatalysts for water splitting. Future directions are focused on developing innovative junction architectures, novel synthesis methods and optimizing the existing active materials to enhance charge transfer, visible light absorption, reducing the gas evolution overpotential and maintaining chemical and physical stability.

show abstract

“…In order for hydrogen to play the role of a future energy carrier, it has to be produced in a sustainable manner using a renewable energy instead of current reforming reactions of fossil fuels ,. Hydrogen production by solar energy‐driven water splitting is most ideal because the technology utilizes the two most abundant natural resources available on earth – sunlight and water ,. The solar water splitting can be categorized into three broad areas as in Figure : thermochemical, photo‐biological, and photo(electro)chemical.…”

Section: Introductionmentioning

confidence: 99%

Key Strategies to Advance the Photoelectrochemical Water Splitting Performance of α‐Fe₂O₃ Photoanode

2018

View full text Add to dashboard Cite

The last few decades’ extensive research on the photoelectrochemical (PEC) water splitting has projected it as a promising approach to meet the steadily growing demand for cleaner and renewable energy in a sustainable and economically viable fashion. Among many potential photocatalysts, hematite (α‐Fe2O3) emerges as a highly promising photoanode material with favorable characteristics including visible light absorption (a suitable band gap energy), earth abundance, chemical stability, and low cost. A pronounced disadvantage of α‐Fe2O3 is its low photovoltage together with an extremely short hole diffusion length and a low electrical conductivity, which limit its PEC water oxidation performance. To make α‐Fe2O3 as a viable photocatalyst for PEC water splitting, one needs to rectify these unfavorable characteristics of α‐Fe2O3 by elaborated multiple modifications. In this review article, we introduce various modification strategies of hematite with emphasis on surface modifications to achieve low onset potential as well as high photocurrent approaching the theoretical value for solar water splitting.

show abstract

A novel photocatalyst LaOF: Facile fabrication and photocatalytic hydrogen production

Cited by 53 publications

References 22 publications

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Photocatalytic Water Splitting—The Untamed Dream: A Review of Recent Advances

Key Strategies to Advance the Photoelectrochemical Water Splitting Performance of α‐Fe₂O₃ Photoanode

Contact Info

Product

Resources

About

A novel photocatalyst LaOF: Facile fabrication and photocatalytic hydrogen production

Cited by 53 publications

References 22 publications

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Review of photocatalytic water-splitting methods for sustainable hydrogen production

Photocatalytic Water Splitting—The Untamed Dream: A Review of Recent Advances

Key Strategies to Advance the Photoelectrochemical Water Splitting Performance of α‐Fe2O3 Photoanode

Contact Info

Product

Resources

About

Key Strategies to Advance the Photoelectrochemical Water Splitting Performance of α‐Fe₂O₃ Photoanode