Seed layer-assisted growth of branched Bi2S3 nanostructure on α-Fe2O3 thin film for improved photoelectrochemical performance

Xiang, Jie; Li, Xianglin; Mo, Rong; Liu, Yu; Yin, Meisong; Li, Hongxing

doi:10.1007/s10854-021-05700-4

Cited by 5 publications

(5 citation statements)

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“…225.2, 293.0, 409.5, and 498.6 cm −1 attributed to the E g and A 1g modes of α-Fe 2 O 3 . 40 A pronounced peak caused by the double-magnet scattering mode of α-Fe 2 O 3 was simultaneously observed at 1317 cm −1 . 31 Two additional characteristic peaks located at ca.…”

Section: Resultsmentioning

confidence: 90%

“…Four characteristic peaks were observed at ca. 225.2, 293.0, 409.5, and 498.6 cm –1 attributed to the E g and A 1g modes of α-Fe 2 O 3 . A pronounced peak caused by the double-magnet scattering mode of α-Fe 2 O 3 was simultaneously observed at 1317 cm –1 .…”

Section: Resultsmentioning

confidence: 94%

“…Additionally, the negative impact of short hole diffusion lengths could be also reduced. 33,40 Along with the reduction of grain boundary resistance of the sample, the increased electrical conductivity of the improved photoanode would positively allow faster migration of photogenerated carriers to the surface of the photoanode material and participation in chemical reactions. 41 Energy dispersive X-ray spectroscopy (EDX) elemental mapping analysis confirmed the presence and homogeneous distribution of Fe, Sb, and O elements in the resulting Sb 2 O 3 / Fe 2 O 3 sample (Figure 2e).…”

Section: Resultsmentioning

confidence: 99%

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Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Chen

Pan

et al. 2022

ACS Appl. Energy Mater.

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Optimization of photogenerated carrier transport by heterojunction engineering has been realized as an effective strategy to improve the electrode performance in photoelectrochemical (PEC) systems. We report for the first time a type II heterostructure consisting of Sb2O3 and Fe2O3 for significantly enhanced PEC water oxidation. The as-fabricated photoanode exhibits prominent performance with a photocurrent density as high as 1.31 mA cm–2 at 1.23 V (vs. reversible hydrogen electrode), 14.5 times that of bare Fe2O3, as well as remarkable applied bias photon-to-current efficiency (10.7 times that of Fe2O3) and long-term stability (over 20 h). Notably, it outperforms all the Sb2O3-based photoanodes reported to date. The excellent PEC performance is ascribed to the rational integration of the matched merits of different components, i.e., interleaved step energy bands and complementary band gaps of Sb2O3 and Fe2O3. Along with the enhanced electrical conductivity, the photogenerated carriers are capable of flowing to the desired direction at a fast migration rate for participating in redox reactions on the electrode surface, and the electron–hole recombination is simultaneously efficiently inhibited.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Chen

Pan

et al. 2022

ACS Appl. Energy Mater.

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“…Solar driven photoelectric catalysis hydrogen production and degradation technology has attracted more and more attention in alleviating environmental pollution and energy shortage. [1,2] Since Fujijima and Honda first discovers that TiO 2 photocatalyst can be used to produce hydrogen using solar energy in 1972, [3] a large number of semiconductor photoelectrodes (such as WO 3 , [4] CuO, [5] Fe 2 O 3 , [6] and ZnO, [7] etc) have been developed for the field of photocatalysis. However, the low internal and interfacial separation efficiency of carriers limit the improvement of catalytic efficiency, [8,9] so how to solve these problems become the key to the development of photoelectric catalytic technology.…”

Section: Introductionmentioning

confidence: 99%

Doping Sr and Introducing Oxygen Vacancies in Ba_0.7Sr_0.3TiO_3‐X Synergistically Promote the Pyro‐Photo‐Electric Catalysis Performance

et al. 2022

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The low utilization of light and the severe recombination of charge carriers have always restricted the development of photoelectric catalysis. In this work, the photoelectric catalytic performance is tuned by doping Sr in BaTiO 3 pyroelectric material and simultaneously introducing oxygen vacancies to form double-type defects, combined with pyroelectric polarization. Under the light and 20-50 °C cold-heat cycle, the current density of Ba 0.7 Sr 0.3 TiO 3-X reaches the maximum of 0.92 mA • cm À 2 , which is higher than the current density of Ba 0.7 Sr 0.3 TiO 3-X under only light (0.69 mA • cm À 2 ). Under light alone, the current density of Ba 0.7 Sr 0.3 TiO 3-X is higher than that of BaTiO 3 (0.19 mA • cm À 2 ) and Ba 0.7 Sr 0.3 TiO 3 (0.44 mA • cm À 2 ). This is because the incorporation of Sr can introduce the Fermi level, improve the utilization rate of solar energy, and improve the pyroelectric polarization effect with volume shrinkage, and promote the separation and transfer of carriers. Oxygen vacancies can be used as reactive centers for excited electrons to suppress the recombination of excited electron-hole pairs. Furthermore, the generation of photogenerated and pyrogenerated carriers increases the overall carrier concentration. This provides ideas for the modification of traditional photoelectrodes for photoelectric catalysis water splitting.

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“…The slow OER kinetics restricts the overall water splitting reaction. Metal oxides, including TiO 2 , ZnO, WO 3 , and Fe 2 O 3 , are frequently investigated as photoanode layers due to their low cost and high chemical stability. − Apart from binary metal oxides, ternary metal oxides have also been investigated to overcome the existing challenges in binary metal oxides. Zinc tin oxide (Zn 2 SnO 4 ) is one of the promising materials for solar energy conversion.…”

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confidence: 99%

Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn₂SnO₄ Nanorods in Photoelectrochemical Water Splitting

Mohapatra,

Kushwaha

2024

J. Phys. Chem. Lett.

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The growth of Zn 2 SnO 4 nanorods on two differently prepared ZnO seed layers is demonstrated using a hydrothermal approach. The ZnO seed layers are prepared using dip-coating and electrodeposition techniques. The grown Zn 2 SnO 4 nanorods are in the cubic phase. However, the different seed layers result in alternation in the diameter of grown Zn 2 SnO 4 nanorods. The photocurrent of Zn 2 SnO 4 nanorods grown on an electrodeposited ZnO seed layer is ∼4.5 times larger than that of Zn 2 SnO 4 grown on a dip-coated ZnO seed layer. The Nyquist plots of Zn 2 SnO 4 nanorods on the electrodeposited ZnO seed layer result in a lower charge transfer resistance (R ct = 37.7 Ω) and a lower bulk resistance (R bulk = 64 kΩ), improving the charge transport properties. The change in diameter of Zn 2 SnO 4 nanorods significantly alters the charge transfer behavior. The calculated charge injection efficiency did not exhibit a significant change. However, there was a 1.6-fold enhancement observed in the charge separation efficiency for Zn 2 SnO 4 when grown on an electrodeposited seed layer.

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Seed layer-assisted growth of branched Bi2S3 nanostructure on α-Fe2O3 thin film for improved photoelectrochemical performance

Cited by 5 publications

References 50 publications

Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Doping Sr and Introducing Oxygen Vacancies in Ba_0.7Sr_0.3TiO_3‐X Synergistically Promote the Pyro‐Photo‐Electric Catalysis Performance

Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn₂SnO₄ Nanorods in Photoelectrochemical Water Splitting

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Seed layer-assisted growth of branched Bi2S3 nanostructure on α-Fe2O3 thin film for improved photoelectrochemical performance

Cited by 5 publications

References 50 publications

Modulation of Photogenerated Carrier Transport by Integration of Sb2O3 with Fe2O3 for Improved Photoelectrochemical Water Oxidation

Modulation of Photogenerated Carrier Transport by Integration of Sb2O3 with Fe2O3 for Improved Photoelectrochemical Water Oxidation

Doping Sr and Introducing Oxygen Vacancies in Ba0.7Sr0.3TiO3‐X Synergistically Promote the Pyro‐Photo‐Electric Catalysis Performance

Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn2SnO4 Nanorods in Photoelectrochemical Water Splitting

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Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Modulation of Photogenerated Carrier Transport by Integration of Sb₂O₃ with Fe₂O₃ for Improved Photoelectrochemical Water Oxidation

Doping Sr and Introducing Oxygen Vacancies in Ba_0.7Sr_0.3TiO_3‐X Synergistically Promote the Pyro‐Photo‐Electric Catalysis Performance

Effect of the Seed Layer on the Growth and Charge Transfer Behavior of Zn₂SnO₄ Nanorods in Photoelectrochemical Water Splitting