Reinforcement of a BiVO4 anode with an Fe2O3 underlayer for photoelectrochemical water splitting

Ho-Kimura, SocMan; Luo, Wenjun

doi:10.1039/d1se00310k

Cited by 25 publications

(10 citation statements)

References 47 publications

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“…[18][19][20] This explains why most of the semiconductor oxides have poor STH efficiency. [21] For half a century, researchers have focused on developing various PEC materials such as silicon-based materials, [22][23][24][25][26] metal oxide, [27][28][29][30] metal selenide, [31,32] and metal sulfides. [33,34] These materials were improved by doping, [35,36] heterojunction, [37][38][39] defect engineering, [40] surface passivation, [41,42] morphology, [43][44][45][46] and composition control.…”

Section: Introductionmentioning

confidence: 99%

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

et al. 2023

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Photoelectrochemical (PEC) hydrogen production is an emerging technology that uses renewable solar light aimed to establish a sustainable carbon‐neutral society. The barriers to commercialization are low efficiency and high cost. To date, researchers have focused on materials and systems. However, recent studies have been conducted to utilize thermal effects in PEC hydrogen production. This Review provides a fresh perspective to utilize the thermal effects for PEC performance enhancement while delineating the underlying principles and equations associated with efficiency. The fundamentals of the thermal effect on the PEC system are summarized from various perspectives: kinetics, thermodynamics, and empirical equations. Based on this, materials are classified as plasmonic metals, quantum dot‐based semiconductors, and photothermal organic materials, which have an inherent response to photothermal irradiation. Finally, the economic viability and challenges of these strategies for PEC are explained, which can pave the way for the future progress in the field.

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Section: Introductionmentioning

confidence: 99%

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

et al. 2023

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“…16 To solve these problems, metal oxides and metal sulfides have been combined to avoid the rapid recombination of photogenerated electrons and holes. 17 Ferric oxide (Fe 2 O 3 ) is one of the most attractive metal oxide semiconductor due to its simple preparation, nontoxicity, and high chemical stability, 18 as well as photochemical stability and narrow band gap (1.8− 2.2 eV). However, the low separation efficiency, fast recombination performance, and slow electron-transfer rate of Fe 2 O 3 limit its further applications.…”

Section: ■ Introductionmentioning

confidence: 99%

Photoelectrochemical Sensor with a Z-Scheme Fe₂O₃/CdS Heterostructure for Sensitive Detection of Mercury Ions

Ren,

Chen,

Wang

et al. 2023

Anal. Chem.

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Mercury (Hg2+) is a highly toxic element and can seriously affect human health. This work proposed a photoelectrochemical (PEC) sensor with a Z-scheme Fe2O3/CdS heterostructure and two thymine-rich DNA strands (DNA-1 and Au@DNA-2) for sensitive detection of Hg2+. The light excitation of the Fe2O3/CdS composite accelerated the electron transfer among Fe2O3, CdS, and the electrode to produce a stable photocurrent response. Upon the recognition of Hg2+ to thymine bases (T) in two DNA strands to form a stable T-Hg2+-T biomimetic structure, the photocurrent response increased with the increasing concentration of Hg2+ due to the opening of electronic transmission channels from Au nanoparticles to Fe2O3/CdS nanocomposite. Under the optimal conditions screened by the Box–Behnken experiments, the proposed PEC sensor showed excellent analytical performance for Hg2+ detection with high sensitivity, a detection limit of 0.20 pM at a signal-to-noise ratio of 3, high selectivity, a detectable concentration range of 1 pM–100 nM, and acceptable stability. The good recovery and low relative standard deviation for the analysis of Hg2+ in lake and tap water samples demonstrated the potential application of the designed Z-scheme Fe2O3/CdS heterostructure in the PEC detection of heavy metal ions.

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“…Therefore, the use of solar energy to produce hydrogen is promising as a new energy source to replace traditional fossil, and it is considered to be a reliable solution to the above problems. Since Honda and Fujishima discovered that TiO 2 can be used for PEC water splitting in 1972, a large number of semiconductor materials that can be used for solar hydrogen production have been widely studied, such as WO 3 , − TiO 2 , − Fe 2 O 3 , , and BiVO 4 − have become hot spots for research. However, there are many limitations in practical applications, the low carrier separation efficiency and high carrier compounding during migration to the surface are the biggest problems affecting the photocatalytic efficiency .…”

Section: Introductionmentioning

confidence: 99%

Thickness Control of BiOIO₃ Enables Polarization Enhancement To Promote Carrier Separation and Pyro-PEC Performance

Ruan

Guo

et al. 2023

J. Phys. Chem. C

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Pyroelectric polarization is considered to be one of the effective ways to promote carrier separation and improve the capacity of PEC water splitting. In this paper, we prepared a BiOIO 3 catalyst by a one-pot hydrothermal method and investigated the growth process of BiOIO 3 , based on which HNO 3 and NaOH were used to cause BiOIO 3 to grow selectively along the (040) direction, and the regulation mechanism was analyzed so as to improve the pyroelectric polarization intensity of BiOIO 3 . Under the dual excitation of light and cold−hot cycles, the optimal thickness range of BiOIO 3 nanoplate (40−50 nm) exhibits the highest photocurrent density of 0.134 μA/cm 2 at 1.23 V compared with the reversible hydrogen electrode (RHE), which is 1.6 times higher than that of the nanosheet with a thickness of 20−30 nm. A series of experimental results show that the high performance is due to suitable thickness modulation which not only enhances the polarization intensity and thus reduces the chemical reaction barrier but also facilitates the charge separation and transfer. This study provides a different way of thinking for the development of the field of pyro-photo-electric catalysis on the basis of enhanced pyroelectric polarization.

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Reinforcement of a BiVO₄ anode with an Fe₂O₃ underlayer for photoelectrochemical water splitting

Abstract: To understand the consequence of a Fe2O3/BiVO4 heterojunction simply, we fabricated an undoped FTO/Fe2O3/BiVO4 composite photoanode for photoelectrochemical (PEC) water oxidation. We discovered that forming a heterojunction between the Fe2O3...

Cited by 25 publications

References 47 publications

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

Photoelectrochemical Sensor with a Z-Scheme Fe₂O₃/CdS Heterostructure for Sensitive Detection of Mercury Ions

Thickness Control of BiOIO₃ Enables Polarization Enhancement To Promote Carrier Separation and Pyro-PEC Performance

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Reinforcement of a BiVO4 anode with an Fe2O3 underlayer for photoelectrochemical water splitting

Abstract: To understand the consequence of a Fe2O3/BiVO4 heterojunction simply, we fabricated an undoped FTO/Fe2O3/BiVO4 composite photoanode for photoelectrochemical (PEC) water oxidation. We discovered that forming a heterojunction between the Fe2O3...

Cited by 25 publications

References 47 publications

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

Thermal Effect on Photoelectrochemical Water Splitting Toward Highly Solar to Hydrogen Efficiency

Photoelectrochemical Sensor with a Z-Scheme Fe2O3/CdS Heterostructure for Sensitive Detection of Mercury Ions

Thickness Control of BiOIO3 Enables Polarization Enhancement To Promote Carrier Separation and Pyro-PEC Performance

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Product

Resources

About

Reinforcement of a BiVO₄ anode with an Fe₂O₃ underlayer for photoelectrochemical water splitting

Photoelectrochemical Sensor with a Z-Scheme Fe₂O₃/CdS Heterostructure for Sensitive Detection of Mercury Ions

Thickness Control of BiOIO₃ Enables Polarization Enhancement To Promote Carrier Separation and Pyro-PEC Performance