K3MB5O10 (M = Zn and Cd) with d10 configuration: Efficient and reusable catalysts for dehalogenation of halophenols

Fan, Xiaoyun; Liu, Jing; Lai, Kangrong; Wang, Chuanyi

doi:10.1016/j.apcatb.2017.01.016

Cited by 27 publications

(13 citation statements)

References 44 publications

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“…The directional accumulation of microcosmic polarization by polar unites for large macroscopic polarization to promote the charge separation and photocatalysis was also reported for other borate materials, such as Na 3 VO 2 B 6 O 11 [ 124 ] and K 3 MB 5 O 10 (M = Zn and Cd). [ 125 ]…”

Section: Atomic‐level Bulk Charge Separation Strategiesmentioning

confidence: 99%

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

et al. 2021

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Semiconductor‐based photocatalysis as a productive technology furnishes a prospective solution to environmental and renewable energy issues, but its efficiency greatly relies on the effective bulk and surface separation of photoexcited charge carriers. Exploitation of atomic‐level strategies allows in‐depth understanding on the related mechanisms and enables bottom‐up precise design of photocatalysts, significantly enhancing photocatalytic activity. Herein, the advances on atomic‐level charge separation strategies toward developing robust photocatalysts are highlighted, elucidating the fundamentals of charge separation and transfer processes and advanced probing techniques. The atomic‐level bulk charge separation strategies, embodied by regulation of charge movement pathway and migration dynamic, boil down to shortening the charge diffusion distance to the atomic‐scale, establishing atomic‐level charge transfer channels, and enhancing the charge separation driving force. Meanwhile, regulating the in‐plane surface structure and spatial surface structure are summarized as atomic‐level surface charge separation strategies. Moreover, collaborative strategies for simultaneous manipulation of bulk and surface photocharges are also introduced. Finally, the existing challenges and future prospects for fabrication of state‐of‐the‐art photocatalysts are discussed on the basis of a thorough comprehension of atomic‐level charge separation strategies.

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Section: Atomic‐level Bulk Charge Separation Strategiesmentioning

confidence: 99%

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

et al. 2021

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“…37−40 Specifically, transition metal ions with a fully occupied d 10 configuration (Zn 2+ or Cd 2+ ) would offer potential for construction of local polar units based on the Jahn−Teller distortion. 35,41 Thus, we hope that combining the above effects might lead us to borate compounds with excellent photocatalytic performance. One promising candidate is Zn 4 B 6 O 13 .…”

Section: ■ Introductionmentioning

confidence: 99%

“…Thus, metal borates represent an attractive potential target for achieving high-performance photocatalysts. Recently, metal borates have been applied as photocatalysts in water splitting, − organic synthesis, − and decomposition of halo phenols. − …”

Section: Introductionmentioning

confidence: 99%

Zn₄B₆O₁₃: Efficient Borate Photocatalyst with Fast Carrier Separation for Photodegradation of Tetracycline

Diao

Wang

et al. 2020

Inorg. Chem.

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There is a need for photocatalysts with efficient photocarrier separation to address issues with environmental pollution. Photocarrier separation is largely determined by the orbital composition near the band edge. Here, we investigate Zn 4 B 6 O 13 as an efficient photocatalyst for photodegradation of tetracycline. Theoretical calculations of Zn 4 B 6 O 13 show that the valence band near the Fermi level is composed of d and p orbitals whereas the bottom of the conduction band is composed of s and p orbitals; thus, a large value of m h */m e * is derived from the band dispersion. The characteristics of this orbital composition promote separation of photoexcited carriers, leading to a high transfer efficiency of the catalyst. Moreover, photodegradation experiments demonstrate that the photocatalytic activity of Zn 4 B 6 O 13 is approximately 5.2 times as high as that of SnO 2 . This study provides insights that might aid the development of novel boratebased environmental photocatalysts with superior performance.

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“…In this aspect, many strategies have been developed for improving photocatalytic efficiency. Among them, reducing the high recombination rate of photogenerated carriers is one of effective approaches, which could be realized by constructing internal electric fields, such as forming heterojunction or homojunction, spontaneous polarization of ferroelectrics, polarization on crystal surface, etc . Although with some successes, these static internal electric fields, including those generated by ferroelectrics, are usually liable to be saturated by charge carriers, crystal defects in semiconductor (inner shield effect), and the absorbed ions from electrolytic solution (outer shield effect) .…”

Section: Introductionmentioning

confidence: 99%

Construction of Self‐Healing Internal Electric Field for Sustainably Enhanced Photocatalysis

Dai

Chen

et al. 2019

Adv Funct Materials

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The construction of internal electric field is generally considered an effective strategy to enhance photocatalytic performance due to its significant role in charge separation. However, static internal electric field is prone to be saturated either by inner or outer shield effect, and thus its effect on the improvement of photocatalysis can easily vanish. Here, the self-healing internal electric field is proposed and successfully endowed to a designed helical structural composite microfiber polyvinylidene fluoride/g-C 3 N 4 (PVDF/g-C 3 N 4 ) based on the bioinspired simple harmonic vibration. Importantly, the saturation and recovery of internal electric field are characterized by transient photovoltage and photoluminescence. The results indicate that the internal electric field could be saturated within about 10 min and refreshed with the assistance of rebuilt piezoelectric potential. The lifetime of photogenerated carriers is about 10 −4 s and the number of effective carriers is greatly increased in the presence of self-healing internal electric field. The results provide direct experimental evidence on the role of self-healing internal electric field in charge transfer behavior. This work represents a new design strategy of photocatalysts, and it may open up new horizons for solving energy shortage and environmental issues.

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K3MB5O10 (M = Zn and Cd) with d10 configuration: Efficient and reusable catalysts for dehalogenation of halophenols

Cited by 27 publications

References 44 publications

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

Zn₄B₆O₁₃: Efficient Borate Photocatalyst with Fast Carrier Separation for Photodegradation of Tetracycline

Construction of Self‐Healing Internal Electric Field for Sustainably Enhanced Photocatalysis

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K3MB5O10 (M = Zn and Cd) with d10 configuration: Efficient and reusable catalysts for dehalogenation of halophenols

Cited by 27 publications

References 44 publications

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

Atomic‐Level Charge Separation Strategies in Semiconductor‐Based Photocatalysts

Zn4B6O13: Efficient Borate Photocatalyst with Fast Carrier Separation for Photodegradation of Tetracycline

Construction of Self‐Healing Internal Electric Field for Sustainably Enhanced Photocatalysis

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Zn₄B₆O₁₃: Efficient Borate Photocatalyst with Fast Carrier Separation for Photodegradation of Tetracycline