Efficient photo-electrochemical water splitting based on hematite nanorods doped with phosphorus

Wang, Xiaoning; Gao, Wenqiang; Zhao, Zhenhuan; Zhao, Lili; Claverie, Jérôme P.; Zhang, Xiaofei; Wang, Jianjun; Liu, Hong; Sang, Yuanhua

doi:10.1016/j.apcatb.2019.02.048

Cited by 62 publications

(26 citation statements)

References 42 publications

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“…In the photoelectrochemical (PEC) electrolysis cell [98,99], the photoanode absorbs the solar energy to generate the photovoltage to effectively drive water splitting, which can effectively decrease the external energy consumption [100][101][102]. To minimized utilization of the external energy consumption and realize unassisted overall light-induced water splitting, a possible way is using a tandem structure to generate a total photovoltage through complementary light absorption between different semiconductor electrodes [103][104][105][106][107][108][109][110][111][112][113]. Mathews et al constructed that a Fe 2 O 3 photoanode in tandem with an organic-inorganic CH 3 NH 3 PbI 3 perovskite solar cell (PSC) ( Fig.…”

Section: Water Splitting Driven By a Photoelectrode Devicementioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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HIGHLIGHTS • Bifunctional electrode and electrolytic cell configuration for electrochemical water splitting are reviewed. • The different green energy systems powered water splitting are summarized and discussed. • An outlook of future research prospects for the development of green energy system powered water splitting in practical application process is proposed. ABSTRACT Hydrogen (H 2) production is a latent feasibility of renewable clean energy. The industrial H 2 production is obtained from reforming of natural gas, which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon dioxide. Electrochemical water splitting is a promising approach for the H 2 production, which is sustainable and pollution-free. Therefore, developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the world. The utilization of green energy systems to reduce overall energy consumption is more important for H 2 production. Harvesting and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption. A variety of green energy systems for efficient producing H 2 , such as two-electrode electrolysis of water, water splitting driven by photoelectrode devices, solar cells, thermoelectric devices, triboelectric nanogenerator, pyroelectric device or electrochemical water-gas shift device, have been developed recently. In this review, some notable progress made in the different green energy cells for water splitting is discussed in detail. We hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H 2 energy, which will realize the whole process of H 2 production with low cost, pollution-free and energy sustainability conversion.

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Section: Water Splitting Driven By a Photoelectrode Devicementioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

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“…2,3 WS can be categorized as photo-electrochemical water splitting and electrochemical water splitting, which share many commonalities in their processes, but their difference lies in their energy sources, as PEC water splitting utilizes abundant solar energy while electrochemical water splitting harnesses electrical energy to produce hydrogen. 4 In water splitting the absorbed photons on the surface of electrodes results in the generation of electrons and holes which are used in hydrogen and oxygen evolution respectively. The water oxidation reaction is normally favorable in an alkaline medium because in an alkaline medium, even cheap materials can be used as coherent electrodes, 5,6 reducing corrosion and bidding for a long lifetime for the anode.…”

Section: Introductionmentioning

confidence: 99%

Phyto-inspired and scalable approach for the synthesis of PdO–2Mn₂O₃: a nano-material for application in water splitting electro-catalysis

et al. 2020

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“…Hence, PEC technology still entails the significant challenge of reducing the cost in comparison to steam reforming . Currently, for PEC water-splitting systems, transition metal semiconductor oxides, mainly represented by Fe 2 O 3 − and BiVO 4 , , are selected as PEC catalysts because of their suitable band gap, long stability, durability, and low cost . Upon application of a bias to the electrode, the photoinduced charge separation has been obviously modified.…”

Section: Fabrication and Characterization Of Ferromagnetic Znfe2o4mentioning

confidence: 99%

Electron Spin Polarization-Enhanced Photoinduced Charge Separation in Ferromagnetic ZnFe₂O₄

et al. 2021

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Investigating a high-efficiency photoelectrochemical (PEC) system is an essential strategy to realize solar energy conversion, and the catalytic activity is mostly regulated by the intrinsic electronic structure. Here, we synthesize a ferromagnetic ZnFe 2 O 4 (ZFO) photoelectrode with an improved ferromagnetic property by introducing cation disorder and oxygen vacancies. Ferromagnetic ZnFe 2 O 4 with an improved ferromagnetic property enables significant enhancement of PEC performance simply by placement of a permanent magnet to provide the photoelectrode with a magnetic field. The improvement is assigned to electron spin polarization of the ferromagnetic ZFO photoelectrode regulated by the magnetic field. Because of the spin state loss of excited electrons, there are many photoinduced electrons in the same spin state as holes, which is unfavorable for their recombination during the light excitation process. The polarization also benefits the charge transfer based on the magnetoresistance effect. This work extends the strategy of enhancing the separation of photoinduced charges.

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Efficient photo-electrochemical water splitting based on hematite nanorods doped with phosphorus

Cited by 62 publications

References 42 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

Phyto-inspired and scalable approach for the synthesis of PdO–2Mn₂O₃: a nano-material for application in water splitting electro-catalysis

Electron Spin Polarization-Enhanced Photoinduced Charge Separation in Ferromagnetic ZnFe₂O₄

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Efficient photo-electrochemical water splitting based on hematite nanorods doped with phosphorus

Cited by 62 publications

References 42 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

Phyto-inspired and scalable approach for the synthesis of PdO–2Mn2O3: a nano-material for application in water splitting electro-catalysis

Electron Spin Polarization-Enhanced Photoinduced Charge Separation in Ferromagnetic ZnFe2O4

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Product

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Phyto-inspired and scalable approach for the synthesis of PdO–2Mn₂O₃: a nano-material for application in water splitting electro-catalysis

Electron Spin Polarization-Enhanced Photoinduced Charge Separation in Ferromagnetic ZnFe₂O₄