Journal ArticleDOI
Catalysts made of earth-abundant elements (Co, Ni, Fe) for water splitting: Recent progress and future challenges
Pingwu Du,Richard Eisenberg +1 more
TLDR
In this article, the authors focus on catalysts made of cobalt (Co), nickel (Ni), and iron (Fe) elements for water reduction and water oxidation and discuss different series of catalysts that can be applied in electrocatalytic and photocatalytic water spitting.Abstract:
This article reviews recent significant advances in the field of water splitting. Catalysts play very important roles in two half reactions of water splitting - water reduction and water oxidation. Considering potential future applications, catalysts made of cheap and earth abundant element(s) are especially important for economically viable energy conversion. This article focuses only on catalysts made of cobalt (Co), nickel (Ni) and iron (Fe) elements for water reduction and water oxidation. Different series of catalysts that can be applied in electrocatalytic and photocatalytic water spitting are discussed in detail and their catalytic mechanisms are introduced. Finally, the future outlook and perspective of catalysts made of earth abundant elements will be discussed.read more
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A review on g-C3N4-based photocatalysts
TL;DR: In this paper, the fundamental mechanism of heterogeneous photocatalysis, advantages, challenges and the design considerations of g-C3N4-based photocatalysts are summarized, including their crystal structural, surface phisicochemical, stability, optical, adsorption, electrochemical, photoelectrochemical and electronic properties.
Journal ArticleDOI
Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
TL;DR: This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H2- and O2-production half reactions as well as overall water splitting.
Journal ArticleDOI
Hydrogen evolution by a metal-free electrocatalyst
Yao Zheng,Yan Jiao,Yihan Zhu,Lu Hua Li,Yu Han,Ying Chen,Aijun Du,Mietek Jaroniec,Shi-Zhang Qiao +8 more
TL;DR: This work couple graphitic-carbon nitride with nitrogen-doped graphene to produce a metal-free hybrid catalyst, which shows an unexpected hydrogen evolution reaction activity with comparable overpotential and Tafel slope to some of well-developed metallic catalysts.
Journal ArticleDOI
Metal–organic frameworks for artificial photosynthesis and photocatalysis
Teng Zhang,Wenbin Lin +1 more
TL;DR: The fundamental principles of energy transfer and photocatalysis are summarized and an overview of the latest progress in energy transfer, light-harvesting, photocatalytic proton and CO2 reduction, and water oxidation using MOFs is provided.
Journal ArticleDOI
Engineering heterogeneous semiconductors for solar water splitting
TL;DR: In this paper, a critical review highlights some key factors influencing the efficiency of heterogeneous semiconductors for solar water splitting (i.e. improved charge separation and transfer, promoted optical absorption, optimized band gap position, lowered cost and toxicity, and enhanced stability and water splitting kinetics).
References
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Journal Article
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
Powering the planet: Chemical challenges in solar energy utilization
Nathan S. Lewis,Daniel G. Nocera +1 more
TL;DR: Solar energy is by far the largest exploitable resource, providing more energy in 1 hour to the earth than all of the energy consumed by humans in an entire year, and if solar energy is to be a major primary energy source, it must be stored and dispatched on demand to the end user.
Journal ArticleDOI
Co3O4 nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction
TL;DR: The Co₃O₄/N-doped graphene hybrid exhibits similar catalytic activity but superior stability to Pt in alkaline solutions, making it a high-performance non-precious metal-based bi-catalyst for both ORR and OER.
Journal ArticleDOI
In Situ Formation of an Oxygen-Evolving Catalyst in Neutral Water Containing Phosphate and Co2+
TL;DR: A catalyst that forms upon the oxidative polarization of an inert indium tin oxide electrode in phosphate-buffered water containing cobalt (II) ions is reported that not only forms in situ from earth-abundant materials but also operates in neutral water under ambient conditions.
Journal ArticleDOI
Solar energy conversion by dye-sensitized photovoltaic cells
TL;DR: Developing solar cells that are based on the sensitization of mesoscopic oxide films by dyes or quantum dots, and the examples for the first outdoor application of such solar cells will be provided.
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