Promising pyro-photo-electric catalysis in NaNbO3 via integrating solar and cold-hot alternation energy in pyroelectric-assisted photoelectrochemical system

Zhang, Shaoce; Zhang, Bo; Chen, Dong; Guo, Zhengang; Ruan, Mengnan; Liu, Zhifeng

doi:10.1016/j.nanoen.2020.105485

Cited by 93 publications

(53 citation statements)

References 45 publications

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“…For this reason, the reason of pyro‐photo‐electric catalysis of BaTiO 3 and BaTiO 3 /CdS is further analyzed by linear voltammetry (Figure 7c) and M‐S (Figure 7d). And the flat band potential (V fb ) and the donor density (Nd) are obtained using the following formula (4)(5) [45] . Meanwhile, the data are summarized in Table S1 [Eqs.…”

Section: Resultsmentioning

confidence: 99%

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

et al. 2021

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Efficient charges separation and transfer are considered to be the key factors to achieve high efficiency photoelectric catalysis. Herein, we proposed that the internal potential difference and the macroscopic polarization field of the homotype BaTiO3/CdS pyroelectric heterojunction can adjust the photoelectric catalytic performance to achieve degradation of methylene blue (MB) and rhodamine B (RhB) dyes. Under 20–50 °C hot–cold cycles, light and external bias, the catalytic rate of BaTiO3/CdS for MB is 4.82×10−2 min−1, which is 1.29 times and 1.36 times higher than photoelectric catalytic rates of BaTiO3/CdS (3.74×10−2 min−1) and BaTiO3 (2.15×10−2 min−1) alone, respectively. In addition, the catalytic rate of BaTiO3/CdS for RhB is 3.07×10−2 min−1, which is 1.41 times and 1.28 times higher than photoelectric catalytic rates of BaTiO3/CdS (2.18×10−2 min−1) and BaTiO3 (1.45×10−2 min−1) alone, respectively. The improvement of catalytic efficiency is due to the generation of pyrogenerated and photogenerated carriers, and the macroscopic polarization field and the potential difference at the BaTiO3/CdS heterojunction interface can enhance the separation and transfer of charge. This study confirms that the homotype heterojunction based on the pyroelectric effect can use solar/thermal energy to achieve efficient photoelectric catalysis. This provides a reference for the design and development of new and efficient electrodes in the field of photoelectric catalysis.

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Section: Resultsmentioning

confidence: 99%

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

et al. 2021

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“…Using the equivalent circuit model (inset of Figure 9) to analyze the EIS data, where Rs is the resistance of the electrolyte, CPE is the capacitance phase element, Rct is the charge transfer resistance of the film/electrolyte interface (Equal to the diameter of the semicircle in the Nyquist diagram). [44] Besides, the simulated values and the corresponding error rates are displayed in Table S1 S7 that after 8 h of measurement, the output of hydrogen and oxygen are 116.04 μmol and 57.23 μmol, respectively, the corresponding Faraday efficiencies are 94 % and 95 %. It can be clearly seen from the illustration that the generation rates of hydrogen and oxygen are 14.23 μmol/h and 7.83 μmol/h, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…With the increasing demand for fossil fuels by the world population, the energy crisis and environmental pollution are becoming more and more serious. [1][2] Since Fujishima and Honda conducted groundbreaking PEC research in 1972, [3] PEC water splitting is considered as a promising strategy to convert solar energy into stable, environmentally friendly, renewable and clean chemical energy, H 2 . [4][5] As the basic unit to construct PEC water splitting, photoelectrode materials play a vital role in achieving excellent PEC performance.…”

Section: Introductionmentioning

confidence: 99%

Optimized the Carrier Transport Path and Separation Efficiency of 2D/2D Heterojunction in Photoelectrochemical Water Splitting

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It is a promising strategy that the photoelectrode with high charge transfer rate and separation efficiency is designed in the photoelectrochemical (PEC) water splitting. Herein, the nanoflakes/nanoflakes (2D/2D) MoS 2 /ZnIn 2 S 4 heterojunction is synthesized by two-step hydrothermal methods. The carrier transport path in heterojunction is optimized through the Schottky contact calculated by density functional theory (DFT) and large specific surface area between 2D nanoflakes MoS 2 and ZnIn 2 S 4 . Besides, the bimetallic oxyhydroxide NiFeOOH can be used as co-catalyst to improve the separation of carriers. The results exhibit that MoS 2 /ZnIn 2 S 4 /NiFeOOH photoelectrode with dramatically enhanced photocurrent density of 0.74 mA/cm 2 at 1.23 V versus the reversible hydrogen electrode (V RHE ), which is 2.6 and 5.7 times higher than the bare MoS 2 and ZnIn 2 S 4 , respectively. And it has the largest charge separation efficiency (η bulk ) (22.8 %) and charge transfer efficiency (η surface ) (64.6 %) in the as-prepared samples. This work provides a strategy for design of the photoelectrode with excellent charge transfer efficiency and separation efficiency in PEC water splitting.

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“…For instance, a change of reaction temperature is beneficial to the separation of photogenerated electrons and holes. [ 114 ] Increasing the intensity of the light source can improve the number of incident photons to enhance the reaction rate. [ 115 ] Thus, it is a complicated and difficult process for the comparison of the activity results.…”

Section: Application Of Nb2o5‐based Photocatalystsmentioning

confidence: 99%

Nb₂O₅‐Based Photocatalysts

et al. 2021

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Photocatalysis is one potential solution to the energy and environmental crisis and greatly relies on the development of the catalysts. Niobium pentoxide (Nb 2 O 5 ), a typically nontoxic metal oxide, is eco-friendly and exhibits strong oxidation ability, and has attracted considerable attention from researchers. Furthermore, unique Lewis acid sites (LASs) and Brønsted acid sites (BASs) are observed on Nb 2 O 5 prepared by different methods. Herein, the recent advances in the synthesis and application of Nb 2 O 5 -based photocatalysts, including the pure Nb 2 O 5 , doped Nb 2 O 5 , metal species supported on Nb 2 O 5 , and other composited Nb 2 O 5 catalysts, are summarized. An overview is provided for the role of size and crystalline phase, unsaturated Nb sites and oxygen vacancies, LASs and BASs, dopants and surface metal species, and heterojunction structure on the Nb 2 O 5 -based catalysts in photocatalysis. Finally, the challenges are also presented, which are possibly overcome by integrating the synthetic methodology, developing novel photoelectric characterization techniques, and a profound understanding of the local structure of Nb 2 O 5 .

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Promising pyro-photo-electric catalysis in NaNbO3 via integrating solar and cold-hot alternation energy in pyroelectric-assisted photoelectrochemical system

Cited by 93 publications

References 45 publications

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

Optimized the Carrier Transport Path and Separation Efficiency of 2D/2D Heterojunction in Photoelectrochemical Water Splitting

Nb₂O₅‐Based Photocatalysts

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Promising pyro-photo-electric catalysis in NaNbO3 via integrating solar and cold-hot alternation energy in pyroelectric-assisted photoelectrochemical system

Cited by 93 publications

References 45 publications

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO3/CdS Heterojunction through Integration of Solar and Thermal Energy

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO3/CdS Heterojunction through Integration of Solar and Thermal Energy

Optimized the Carrier Transport Path and Separation Efficiency of 2D/2D Heterojunction in Photoelectrochemical Water Splitting

Nb2O5‐Based Photocatalysts

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Resources

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Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

Thermal Excitation Polarized Field Drives Photoelectric Catalysis for Dye Degradation in a BaTiO₃/CdS Heterojunction through Integration of Solar and Thermal Energy

Nb₂O₅‐Based Photocatalysts