Enhanced photocatalytic performance by polarizing ferroelectric KNbO3 for degradation of plastic wastes under mild conditions

Liu, Fei; Zhuang, Xiangjie; Du, Zoufei; Dan, Yi; Huang, Yun; Jiang, Long

doi:10.1016/j.apcatb.2022.121897

Cited by 23 publications

(12 citation statements)

References 49 publications

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“…However, the development of semiconductor science gives us other choices. Though rarely reported, it is worth noting that semiconductors like MnO, [ 41 ] MoO 3 , [ 42 ] CeO 2 , [ 43 ] KNbO 3 , [ 44 ] and BiOBr [ 45 ] are also capable of cleaving C–C and C–H bonds and therefore holds potential for plastic conversion. However, the wide bandgaps of Class‐I semiconductors make themselves only useful under UV illumination, limiting their large‐scale industrial application.…”

Section: Photocatalyst Design: Active Centersmentioning

confidence: 99%

“…[ 79 ] For instance, the magnetic field can prepolarize the electron structures of catalysts like KNbO 3 (Figure 5c). [ 44 ] The enhanced ability to produce free radicals explains the differences in plastic decomposition ability after polarization. The polarized KNbO 3 showed an even higher mineralization rate for PE and PP than Bi 2 WO 6 , g‐C 3 N 4 , TiO 2, and WO 3 .…”

Section: Photocatalyst Design: Active Centersmentioning

confidence: 99%

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Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

et al. 2023

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Microplastics (MPs) are regarded as a pervasive contaminant that poses threats to the environment and human safety. However, the high energy storage potential of the C–C and C–H bonds in MPs has led to increased attention toward technological methods for upgrading plastic waste to high‐value‐added fuels. Aqueous photocatalysis has emerged as a promising approach for upgrading MPs due to its solar‐driven properties and ability to generate various radicals. While extensive investigations and reviews have been conducted on photocatalysts and the resulting products within this system, there is an emerging need to comprehensively understand the entire process to enhance efficiency and selectivity further. In this review, significant advancements in the overall system are summarized, including reactants, pretreatments, photocatalysts, additives, and reactors, to enable efficient and selective reactions based upon the principles of state‐of‐the‐art photocatalytic microplastic upgrading. Furthermore, the shortcomings are clarified with proposed possible breakthrough points in each research direction. Ultimately, the significance of developments in pretreatments is highlighted, paving the way for future research possibilities.

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Section: Photocatalyst Design: Active Centersmentioning

confidence: 99%

Section: Photocatalyst Design: Active Centersmentioning

confidence: 99%

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

et al. 2023

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“…148,149 The combination of piezoelectricphotocatalysts has demonstrated the ability to inhibit the rapid recombination of photogenerated charges, exhibiting unique advantages in plastic waste treatment. 150 The integration of biocatalysis and photocatalysis holds great promise for achieving complete degradation of waste plastics, transforming large molecules into smaller ones and ultimately achieving complete mineralization. Ye et al developed a bio-photocatalyst system by assembling Methanosarcina barkeri (M.…”

Section: Photo-thermal/electro/biocatalytic Synergymentioning

confidence: 99%

“…148,149 The combination of piezoelectric-photocatalysts has demonstrated the ability to inhibit the rapid recombination of photogenerated charges, exhibiting unique advantages in plastic waste treatment. 150…”

Section: Photochemical Strategies For the Resourcefulness Of Waste Pl...mentioning

confidence: 99%

Advancements in catalysis for plastic resource utilization

Chen,

Bai,

Peng

et al. 2023

Environ. Sci.: Adv.

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“…The photoluminescence (PL) spectrum was used to study the behaviour of photo-generated electrons and hole migration and separation on the surface or bulk of photocatalyst. [58,59] The intensity of PL peak can reflect the capture, recombination, and migration of photo-generated electrons and holes directly. As the peak intensity of PL decreases, the recombination of photogenerated electrons and holes also decreases, thereby benefiting the better photocatalytic performance of the photocatalyst.…”

Section: Transient Photocurrent Response and Photoluminescence (Pl) S...mentioning

confidence: 99%

Enhanced Piezo‐photocatalytic Performances of AgNbO₃ Materials for Dye Decomposition Via Polarization Engineering

Yang,

Liu,

Cai

et al. 2023

ChemPhotoChem

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The limitation to enhancing photocatalytic performance in photocatalysts lies in the rapid recombination of photo‐induced electrons and holes. Herein, AgNbO3 photocatalysts were synthesized by the hydrothermal method. The effects of hydrothermal temperature on the microstructure and photocatalytic/piezo‐photocatalytic performances of AgNbO3 have been systematically investigated. The AgNbO3 cubes synthesized at 180 °C for 24 h exhibited the best photocatalytic/piezo‐photocatalytic performances among all samples. The corona poling as an important method of polarization engineering is applied to promote further the separation and migration of charge carriers in AgNbO3. The polarized AgNbO3 synthesized at 170 °C exhibited outstanding piezo‐photocatalytic performance, and a degradation rate of 95 % for RhB within 90 min and a high apparent rate constant of 0.02978 min−1 were achieved. On the one hand, the alternating piezoelectric field caused by ultrasonic‐assisted illumination destroyed the shielding effect and enhanced the separation of electron‐hole pairs. On the other hand, polarization engineering induced by corona poling promoted the separation and migration of photo‐induced carriers, thereby realizing more efficient utilization of these charges during the photocatalytic decomposition process. This work presents a facile way to achieve superior piezo‐photocatalytic performances of AgNbO3‐based photocatalyst via polarization engineering.

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Enhanced photocatalytic performance by polarizing ferroelectric KNbO3 for degradation of plastic wastes under mild conditions

Cited by 23 publications

References 49 publications

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

Advancements in catalysis for plastic resource utilization

Enhanced Piezo‐photocatalytic Performances of AgNbO₃ Materials for Dye Decomposition Via Polarization Engineering

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Enhanced photocatalytic performance by polarizing ferroelectric KNbO3 for degradation of plastic wastes under mild conditions

Cited by 23 publications

References 49 publications

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

Systemically Understanding Aqueous Photocatalytic Upgrading of Microplastic to Fuels

Advancements in catalysis for plastic resource utilization

Enhanced Piezo‐photocatalytic Performances of AgNbO3 Materials for Dye Decomposition Via Polarization Engineering

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Product

Resources

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Enhanced Piezo‐photocatalytic Performances of AgNbO₃ Materials for Dye Decomposition Via Polarization Engineering